Title: £411 Flights from London Heathrow to Ko Samui (LHR to USM) - Expedia.co.uk ![](https://images.trvl-media.com/place/6035013/26cceeb4-7a5f-4132-838c-9d0a557db5d2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6035013/26cceeb4-7a5f-4132-838c-9d0a557db5d2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £411 Cheap Flights from London (LHR) to Samui Intl. Airport (USM) [View £411 flight on Mon, 23 Mar 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:LHR,to:USM,departure:23/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:410.35&airProductToken=AQquAQo1CMyQARIEMjQ3NxjriQEgjBUo6LOIAzDWtIgDOEtAAFgBaghFQ09TQVZFUnIIS1hPSlNZTkMKMwjMkAESAzc3MhiMFSDBUiiAtogDMPa6iAM4S0ABWAFqCEVDT1NBVkVScghLWE9KU1lOQwpACMyQARIENDY0NBjBUiDUZCiWvIgDMNy8iAM4S0ABWAFqCEVDT1NBVkVScghLWE9KU1lOQ3oKCNCOARIENDY0NBIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Heathrow Airport (LHR) to Samui Intl. Airport (USM) - ![Singapore Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_SQ.svg) Singapore Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:USM,departure:26/12/2025TANYT&leg2=from:USM,to:LHR,departure:02/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SQ"}}]) - ![Etihad Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EY.svg) Etihad Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:USM,departure:26/12/2025TANYT&leg2=from:USM,to:LHR,departure:02/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EY"}}]) - ![EVA Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BR.svg) EVA Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:USM,departure:26/12/2025TANYT&leg2=from:USM,to:LHR,departure:02/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BR"}}]) - ![Qatar Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_QR.svg) Qatar Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:USM,departure:26/12/2025TANYT&leg2=from:USM,to:LHR,departure:02/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"QR"}}]) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:USM,departure:26/12/2025TANYT&leg2=from:USM,to:LHR,departure:02/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![KLM](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_KL.svg) KLM [](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:USM,departure:26/12/2025TANYT&leg2=from:USM,to:LHR,departure:02/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) - ![Thai Airways International](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TG.svg) Thai Airways International [](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:USM,departure:26/12/2025TANYT&leg2=from:USM,to:LHR,departure:02/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TG"}}]) - ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* - ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Cheap Flights from London (LHR) to Samui Intl. Airport (USM) Prices were available within the past 7 days and start at £411 for one-way flights and £600 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![China Southern Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/CZ.gif) Mon, 9 Mar - Tue, 31 Mar LHR London USM Koh Samui £600 Return found 5 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:09/03/2026TANYT&leg2=from:USM,to:LHR,departure:31/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:599.29&airProductToken=AQqDAQoqCMO0ARIDMzA0GOuJASCCaCjomIcDMLiehwM4WkAAWAFyCFoyQVpBWVhTCioIw7QBEgQzMDM1GIJoIMFSKOSghwMwnaKHAzhBQAFYAXIIWjJBWkFZWFMKKQjQjgESAzEwMRjBUiDUZCjEpIcDMIqlhwM4R0ABWAFyCFoyQVpBWVhTCoIBCikI0I4BEgMxOTIY1GQgwVIoyIyJAzCijYkDOFFAAFgBcghaMkFaQVlYUwopCMO0ARIDMzYyGMFSIIJoKPCRiQMwpJOJAzhBQAFYAXIIWjJBWkFZWFMKKgjDtAESAzMwMxiCaCDriQEo4JOJAzDYmYkDOFpAAVgBcghaMkFaQVlYUxIKCAEQARgBKgJDWhgBIgQIARABKAIoAygEMAE) ![China Southern Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/CZ.gif) Mon, 11 May - Mon, 8 Jun LHR London USM Koh Samui £612 Return found 3 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:11/05/2026TANYT&leg2=from:USM,to:LHR,departure:08/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:611.29&airProductToken=AQqCAQoqCMO0ARIDMzA0GOuJASCCaCiW3YwDMNLijAM4WkAAWAFyCFoyQVpBWVhTCikIw7QBEgMzNjEYgmggwVIoleSMAzDE5YwDOEFAAVgBcghaMkFaQVlYUwopCNCOARIDMTA3GMFSINRkKOrpjAMwq-qMAzhHQAFYAXIIWjJBWkFZWFMKggEKKQjQjgESAzE5MhjUZCDBUijolI8DMMKVjwM4R0AAWAFyCFoyQVpBWVhTCikIw7QBEgMzNjIYwVIggmgokJqPAzDEm48DOEFAAVgBcghaMkFaQVlYUwoqCMO0ARIDMzAzGIJoIOuJASiAnI8DMPihjwM4WkABWAFyCFoyQVpBWVhTEgoIARABGAEqAkNaGAEiBAgBEAEoAigDKAQwAQ) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Fri, 8 May - Tue, 19 May LHR London USM Koh Samui £623 Return found 3 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:08/05/2026TANYT&leg2=from:USM,to:LHR,departure:19/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:622.75&airProductToken=AQqtAQo0CMywARIDMzE3GOuJASC5PCiRtYwDMIS2jAM4S0AAWAFqCEVDT1NBVkVScghLWDBYU1lOQwozCMywARIDMTgwGLk8IMFSKPu4jAMwhb6MAzhLQAFYAWoIRUNPU0FWRVJyCEtYMFhTWU5DCkAIzLABEgQ0MTcwGMFSINRkKPi-jAMwub-MAzhLQAFYAWoIRUNPU0FWRVJyCEtYMFhTWU5DegoI0I4BEgQ0MTcwCq0BCkAIzLABEgQ0MTgzGNRkIMFSKNmujQMwpK-NAzhLQABYAWoIRUNPU0FWRVJyCEtYMFhTWU5DegoI0I4BEgQ0MTgzCjMIzLABEgMxODEYwVIguTwo_q-NAzC_tY0DOEtAAVgBaghFQ09TQVZFUnIIS1gwWFNZTkMKNAjMsAESAzM0MBi5PCDriQEoj7aNAzD9to0DOEtAAVgBaghFQ09TQVZFUnIIS1gwWFNZTkMSCggCEAEYAioCTFgYASIECAEQASgCKAMoBDAL) ![Austrian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/OS.gif) Fri, 8 May - Tue, 19 May LHR London USM Koh Samui £624 Return found 3 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:08/05/2026TANYT&leg2=from:USM,to:LHR,departure:19/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:623.55&airProductToken=AQqrAQo0CM-mARIDMzM4GOuJASCVIiiWuowDMJi7jAM4S0AAWAFqCEVDT1NBVkVScghLWDBYU1lOQwoxCM-mARIBNxiVIiDBUijPu4wDMLbAjAM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQwpACM-mARIEODY2MxjBUiDUZCikwYwDMOXBjAM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQ3oKCNCOARIEODY2MwqrAQpACM-mARIEODY3NBjUZCDBUijPs40DMJq0jQM4S0AAWAFqCEVDT1NBVkVScghLWDBYU1lOQ3oKCNCOARIEODY3NAoxCM-mARIBOBjBUiCVIiiItY0DMJe6jQM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQwo0CM-mARIDMzMzGJUiIOuJASibvI0DMLG9jQM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQxIKCAIQARgCKgJPUxgBIgQIARABKAIoAygEMAs) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Sun, 10 May - Wed, 20 May LHR London USM Koh Samui £626 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:10/05/2026TANYT&leg2=from:USM,to:LHR,departure:20/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:625.15&airProductToken=AQquAQo1CMyQARIEMjQ3ORjriQEgjBUo8s-MAzDq0IwDOEtAAFgBaghFQ09TQVZFUnIIS1gwWFNZTkMKMwjMkAESAzc3MhiMFSDBUijE0YwDMM7WjAM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQwpACMyQARIENDYyOBjBUiDUZCjk14wDMKXYjAM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQ3oKCNCOARIENDYyOAquAQpACMyQARIENDYyMRjUZCDBUiifvo0DMOq-jQM4S0AAWAFqCEVDT1NBVkVScghLWDBYU1lOQ3oKCNCOARIENDYyMQozCMyQARIDNzczGMFSIIwVKIDAjQMwssWNAzhLQAFYAWoIRUNPU0FWRVJyCEtYMFhTWU5DCjUIzJABEgQyNDcwGIwVIOuJASiWxo0DMJPHjQM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQxIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Sun, 14 Jun - Mon, 22 Jun LHR London USM Koh Samui £626 Return found 18 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:14/06/2026TANYT&leg2=from:USM,to:LHR,departure:22/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:625.75&airProductToken=AQquAQo1CMyQARIEMjQ4NRjriQEgjBUo4dSPAzDU1Y8DOEtAAFgBaghFQ09TQVZFUnIIS1gwWFNZTkMKMwjMkAESAzc3MhiMFSDBUiik248DMK7gjwM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQwpACMyQARIENDYyNhjBUiDUZCic4Y8DMN3hjwM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQ3oKCNCOARIENDYyNgquAQpACMyQARIENDYzNhjUZCCSaiiVsJADMIixkAM4S0AAWAFqCEVDT1NBVkVScghLWDBYU1lOQ3oKCNCOARIENDYzNgozCMyQARIDNzY5GJJqIIwVKP2ykAMw8LiQAzhLQAFYAWoIRUNPU0FWRVJyCEtYMFhTWU5DCjUIzJABEgQyNDcwGIwVIOuJASi2uZADMLO6kAM4S0ABWAFqCEVDT1NBVkVScghLWDBYU1lOQxIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![Etihad Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/EY.GIF) Wed, 29 Apr - Mon, 11 May LHR London USM Koh Samui £702 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:29/04/2026TANYT&leg2=from:USM,to:LHR,departure:11/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:701.65&airProductToken=AQpkCh8IxbIBEgI2OBjriQEggD0o_dWLAzCm2YsDOEVAAFgBCh8IxbIBEgM0MDYYgD0gwVIo4tmLAzDj3IsDOEVAAVgBCiAIxbIBEgQ3NjI0GMFSINRkKNHdiwMwq96LAzhFQAFYAQpkCiAIxbIBEgQ3NjI2GNRkIMFSKN7ZjAMwuNqMAzhFQABYAQofCMWyARIDNDAxGMFSIIA9KMvcjAMw4N-MAzhFQAFYAQofCMWyARICNjUYgD0g64kBKMvhjAMwl-WMAzhFQAFYARIKCAEQARgBKgJFWRgBIgQIARABKAQwAQ) ![KLM](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/KL.gif) Fri, 12 Jun - Sat, 20 Jun LHR London USM Koh Samui £715 Return found 18 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:12/06/2026TANYT&leg2=from:USM,to:LHR,departure:20/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:714.35&airProductToken=AQqnAQozCMuYARIEMTAwNhjriQEggJMBKKXAjwMw9cCPAzhMQABYAWoFTElHSFRyCEdSTDVQSExJCjEIy5gBEgM4NDMYgJMBIMFSKLPCjwMw1sePAzhHQAFYAWoFTElHSFRyCEdSTDVQSExJCj0Iy5gBEgQzNzQ5GMFSINRkKNjIjwMwmcmPAzhHQAFYAWoFTElHSFRyCEdSTDVQSExJegoI0I4BEgQzNzQ5CqcBCj0Iy5gBEgQzNzU1GNRkIMFSKImWkAMw1JaQAzhHQABYAWoFTElHSFRyCEdSTDVQSExJegoI0I4BEgQzNzU1CjEIy5gBEgM4NDQYwVIggJMBKNGXkAMwpp2QAzhHQAFYAWoFTElHSFRyCEdSTDVQSExJCjMIy5gBEgQxMDE3GICTASDriQEogJ6QAzDLnpADOExAAVgBagVMSUdIVHIIR1JMNVBITEkSCggBEAEYASoCS0wYASIECAEQASgCKAMoBDAN) ![Air France](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AF.gif) Fri, 15 May - Wed, 3 Jun LHR London USM Koh Samui £734 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:15/05/2026TANYT&leg2=from:USM,to:LHR,departure:03/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:733.45&airProductToken=AQqlAQoyCMGMARIEMTU4MRjriQEg4jAoloWNAzDmhY0DOExAAFgBagVMSUdIVHIIR1JMNVBITEkKMAjBjAESAzE5OBjiMCDBUiiVh40DMMKMjQM4R0ABWAFqBUxJR0hUcghHUkw1UEhMSQo9CMGMARIENDM4MhjBUiDUZCjYjY0DMJmOjQM4R0ABWAFqBUxJR0hUcghHUkw1UEhMSXoKCNCOARIENDM4MgqlAQo9CMGMARIENDM4MBjUZCCSaii12o4DMKjbjgM4VkAAWAFqBUxJR0hUcghWUkw1UEhMSXoKCNCOARIENDM4MAowCMGMARIDMjU3GJJqIOIwKNzcjgMwi-OOAzhWQAFYAWoFTElHSFRyCFZSTDVQSExJCjIIwYwBEgQxNTgwGOIwIOuJASiA5Y4DMNrljgM4TEABWAFqBUxJR0hUcghWUkw1UEhMSRIKCAEQARgBKgJBRhgBIgQIARABKAIoAygEMA0) ![Singapore Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SQ.gif) Mon, 2 Mar - Mon, 18 May LHR London USM Koh Samui £822 Return found 4 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:USM,departure:02/03/2026TANYT&leg2=from:USM,to:LHR,departure:18/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:821.09&airProductToken=AQp-CjcI06IBEgMzMDUY64kBIJJqKIbEhgMwksqGAzhWQABYAWoMRWNvbm9teSBMaXRlcgdWMjVHQlJMCkMI06IBEgQ4NTg2GJJqINRkKNjPhgMwxtCGAzhWQAFYAWoMRWNvbm9teSBMaXRlcgdWMjVHQlJMegoI1KQBEgQ4NTg2Cn4KQwjTogESBDgzNDEY1GQgkmoo6aKNAzDho40DOFZAAFgBagxFY29ub215IExpdGVyB1YyNUdCUkx6CgjUpAESBDgzNDEKNwjTogESAzMyMhiSaiDriQEohKmNAzDHr40DOFZAAVgBagxFY29ub215IExpdGVyB1YyNUdCUkwSCggBEAEYASoCU1EYASIECAEQASgCKAMoBDAP) ## Alternative airports near Koh Samui Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:USM,departure:26/12/2025TANYT&leg2=from:USM,to:LHR,departure:09/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) USM Samui Intl. Airport CheapestClosest 31 min [Flights from £2,039 ](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:USM,departure:26/12/2025TANYT&leg2=from:USM,to:LHR,departure:09/01/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) __Flight from London to Samui Intl. Airport route information__ | Origin airport | Heathrow | | ------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Destination airport | Samui Intl. Airport | | Airlines serving | Air France, Austrian Airlines, British Airways, Cathay Pacific, EVA Airways, Emirates, Etihad Airways, Finnair, Gulf Air, KLM, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Thai Airways International, Turkish Airlines | | Return price | £599 | | Distance | 9836 km | ## Compare flights from London to Samui Intl. Airport easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Samui Intl. Airport. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Samui Intl. Airport in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Samui Intl. Airport. To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. Grab a great deal on your flight from Heathrow (LHR) to Samui Intl. Airport (USM) The easiest way to view the best deals on flights from London to Samui Intl. Airport today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Samui Intl. Airport start at just £600 and range up to £822\. To find an even better deal, try - being flexible on your dates – midweek flights can be cheaper - looking for other airports near London and Samui Intl. Airport - booking your flight during March, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper Why you should book your London to Samui Intl. Airport flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Samui Intl. Airport for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you. Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight. ## Frequently asked questions ### How much is a flight from Heathrow Airport to USM? ### Do I need to pay a cancellation fee if I cancel my flight from LHR to Ko Samui Airport? ### How do I find cheap flights from Heathrow Airport (LHR) to Ko Samui Airport (USM) that have flexible change policies? ### How far is the flight from London Heathrow to Ko Samui Airport (USM)? ### Which airlines fly direct from Heathrow Airport (LHR) to Ko Samui Airport? ### Are LHR to Ko Samui Airport (USM) flight tickets cheaper when they're purchased at the last minute? ## Explore a world of travel with Expedia - Accommodation - Flights - Packages - Cars - Holiday Homes - Other ### Accommodation - [4 Star Hotels in Koh Samui ](https://www.expedia.co.uk/4Star-Koh-Samui-Hotels.s40-0-d6035013.Travel-Guide-Filter-Hotels) - [5 Star Hotels in Koh Samui ](https://www.expedia.co.uk/5Star-Koh-Samui-Hotels.s50-0-d6035013.Travel-Guide-Filter-Hotels) - 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[Sports Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Adventure-Sport-Hotel.0-0-d6035013-tAdventureSportHotel.Travel-Guide-Filter-Hotels) - [All-Inclusive Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-All-Inclusive-Hotel.0-0-d6035013-tAllInclusiveHotel.Travel-Guide-Filter-Hotels) - [Cheap Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Budget-Hotels.0-0-d6035013-tBudgetHotels.Travel-Guide-Filter-Hotels) - [Family-Friendly Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Family-Friendly-Hotel.0-0-d6035013-tFamilyFriendlyHotel.Travel-Guide-Filter-Hotels) - [Gay-Friendly Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Gay-Friendly-Hotel.0-0-d6035013-tGayFriendlyHotel.Travel-Guide-Filter-Hotels) - [Golf Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Golf-Hotels.0-0-d6035013-tGolfHotels.Travel-Guide-Filter-Hotels) - [Hotels with Babysitting Services in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Hotel-With-Babysitting-Services.0-0-d6035013-thotelwithbabysittingservices.Travel-Guide-Filter-Hotels) - [Hotels with Connecting Rooms in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Hotel-With-Connecting-Rooms.0-0-d6035013-thotelwithconnectingrooms.Travel-Guide-Filter-Hotels) - [Hotels with Entertainment in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Hotel-With-Entertainment.0-0-d6035013-thotelwithentertainment.Travel-Guide-Filter-Hotels) - [Hotels with Gym in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Hotel-With-Gym.0-0-d6035013-thotelwithgym.Travel-Guide-Filter-Hotels) - [Hotels with Hot Tubs in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Hotels-With-Hot-Tubs.0-0-d6035013-tHotelsWithHotTubs.Travel-Guide-Filter-Hotels) - [Hotels with smoking rooms in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Hotels-With-Smoking-Rooms.0-0-d6035013-tHotelswithsmokingrooms.Travel-Guide-Filter-Hotels) - [Hotels with Waterslides in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Hotels-With-Waterslides.0-0-d6035013-tHotelswithWaterslides.Travel-Guide-Filter-Hotels) - [Luxury Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Luxury-Hotel.0-0-d6035013-tLuxuryHotel.Travel-Guide-Filter-Hotels) - [Romantic Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Romantic-Hotel.0-0-d6035013-tRomanticHotel.Travel-Guide-Filter-Hotels) - [Shopping Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Shopping-Hotel.0-0-d6035013-tshoppinghotel.Travel-Guide-Filter-Hotels) - [Spa Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Spa-Hotels.0-0-d6035013-tSpaHotels.Travel-Guide-Filter-Hotels) - [Hotels with Waterpark in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Waterpark-Hotel.0-0-d6035013-twaterparkhotel.Travel-Guide-Filter-Hotels) - [Wedding Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Wedding-Hotel.0-0-d6035013-tWeddingHotel.Travel-Guide-Filter-Hotels) - [Yoga Hotels in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Hotels-Yoga-Hotels.0-0-d6035013-tYogaHotels.Travel-Guide-Filter-Hotels) - [Koh Samui Hotels ](https://www.expedia.co.uk/Koh-Samui-Hotels.d6035013.Travel-Guide-Hotels) - [Koh Samui Islands Hotels ](https://www.expedia.co.uk/Koh-Samui-Islands-Hotels.d3657.Travel-Guide-Hotels) - [Villas in Koh Samui ](https://www.expedia.co.uk/Koh-Samui-Villas.d6035013-aaVillas.Travel-Guide-Accommodation) - [Hotels near Lamai Beach ](https://www.expedia.co.uk/Lamai-Beach-Hotels.0-l6050552-0.Travel-Guide-Filter-Hotels) - [Adults Only Resorts & in Lamai ](https://www.expedia.co.uk/Lamai-Hotels-Adults-Only-Resorts.0-0-d6306954-tAdultsOnlyResorts.Travel-Guide-Filter-Hotels) - [Gay-Friendly Hotels in Lamai ](https://www.expedia.co.uk/Lamai-Hotels-Gay-Friendly-Hotel.0-0-d6306954-tGayFriendlyHotel.Travel-Guide-Filter-Hotels) - [Hotels with Laundry Service in Lamai ](https://www.expedia.co.uk/Lamai-Hotels-Hotel-With-Laundry-Service.0-0-d6306954-thotelwithlaundryservice.Travel-Guide-Filter-Hotels) - [Lamai Hotels ](https://www.expedia.co.uk/Lamai-Hotels.d6306954.Travel-Guide-Hotels) - [Hotels near Silver Beach ](https://www.expedia.co.uk/Silver-Beach-Hotels.0-l6276541-0.Travel-Guide-Filter-Hotels) - [Hotels near Tesco Lotus Koh Samui ](https://www.expedia.co.uk/Tesco-Lotus-Koh-Samui-Hotels.0-l6173618-0.Travel-Guide-Filter-Hotels) ### Flights - [Flights to Koh Samui ](https://www.expedia.co.uk/Cheap-Flights-To-Koh-Samui.d6035013.Travel-Guide-Flights) - [Flights to Lamai ](https://www.expedia.co.uk/Cheap-Flights-To-Lamai.d6306954.Travel-Guide-Flights) - [Flights from Lamai ](https://www.expedia.co.uk/lp/flights/6306954/flights-from-lamai) ### Packages - [Bandon International Hospital ](https://www.expedia.co.uk/Bandon-International-Hospital-Koh-Samui.d6179404.Attraction) - [Bangkok Hospital Samui ](https://www.expedia.co.uk/Bangkok-Hospital-Samui-Koh-Samui.d6179400.Attraction) - [Bangrak Pier ](https://www.expedia.co.uk/Bangrak-Pier-Koh-Samui.d6146122.Attraction) - [Big Buddha Temple ](https://www.expedia.co.uk/Big-Buddha-Temple-Koh-Samui.d6067945.Attraction) - [Big C Supercenter ](https://www.expedia.co.uk/Big-C-Supercenter-Koh-Samui.d6289426.Attraction) - [Bo Phut Beach ](https://www.expedia.co.uk/Bo-Phut-Beach-Koh-Samui.d6050548.Attraction) - [Bo Phut Beach Pier ](https://www.expedia.co.uk/Bo-Phut-Beach-Pier-Koh-Samui.d6146120.Attraction) - [Bophut Holidays ](https://www.expedia.co.uk/Bophut.d6307460.Holidays-City-Breaks) - [Visit Bophut ](https://www.expedia.co.uk/Bophut.dx6307460) - [Central Festival Samui Shopping Center ](https://www.expedia.co.uk/Central-Festival-Samui-Shopping-Center-Koh-Samui.d553248621556406013.Attraction) - [Chaweng Beach ](https://www.expedia.co.uk/Chaweng-Beach-Koh-Samui.d6050549.Attraction) - [Chaweng Noi Beach ](https://www.expedia.co.uk/Chaweng-Noi-Beach-Koh-Samui.d6178914.Attraction) - [Chaweng Walking Street ](https://www.expedia.co.uk/Chaweng-Walking-Street-Chaweng-City-Center.d553248621563234432.Attraction) - [Choeng Mon Beach ](https://www.expedia.co.uk/Choeng-Mon-Beach-Koh-Samui.d6138621.Attraction) - [Fisherman's Village ](https://www.expedia.co.uk/Fishermans-Village-Koh-Samui.d6126504.Attraction) - [Ko Na Thian ](https://www.expedia.co.uk/Ko-Na-Thian-Koh-Samui.d661866024361406464.Attraction) - [Koh Samui Holidays ](https://www.expedia.co.uk/Koh-Samui.d6035013.Holidays-City-Breaks) - [Visit Koh Samui ](https://www.expedia.co.uk/Koh-Samui.dx6035013) - [Lamai Beach ](https://www.expedia.co.uk/Lamai-Beach-Koh-Samui.d6050552.Attraction) - [Lamai Holidays ](https://www.expedia.co.uk/Lamai.d6306954.Holidays-City-Breaks) - [Mae Nam Beach ](https://www.expedia.co.uk/Mae-Nam-Beach-Koh-Samui.d553248633894256007.Attraction) - [Mae Nam Chinatown Market ](https://www.expedia.co.uk/Mae-Nam-Chinatown-Market-Koh-Samui.d553248635975102822.Attraction) - [Phetch Buncha Thai Boxing Stadium ](https://www.expedia.co.uk/Phetch-Buncha-Thai-Boxing-Stadium-Chaweng-City-Center.d6179422.Attraction) - [Samrong Beach ](https://www.expedia.co.uk/Samrong-Beach-Koh-Samui.d553248633851052536.Attraction) - [Samui Karting ](https://www.expedia.co.uk/Samui-Karting-Koh-Samui.d6146096.Attraction) - [Silver Beach ](https://www.expedia.co.uk/Silver-Beach-Koh-Samui.d6276541.Attraction) - [Tesco Lotus Koh Samui ](https://www.expedia.co.uk/Tesco-Lotus-Koh-Samui-Koh-Samui.d6173618.Attraction) - [Wat Lamai ](https://www.expedia.co.uk/Wat-Lamai-Koh-Samui.d6146112.Attraction) - [All inclusive Holiday Packages Koh Samui ](https://www.expedia.co.uk/lp/theme-holidays/all-inclusive-holidays/6035013/Koh-Samui) ### Cars - [Car hire near Bo Phut Beach ](https://www.expedia.co.uk/Compare-Cheap-Car-Hire-In-Bo-Phut-Beach.d6050548.Car-Hire-Guide) - [Car hire Bophut ](https://www.expedia.co.uk/Compare-Cheap-Car-Hire-In-Bophut.d6307460.Car-Hire-Guide) - [Car hire near Choeng Mon Beach ](https://www.expedia.co.uk/Compare-Cheap-Car-Hire-In-Choeng-Mon-Beach.d6138621.Car-Hire-Guide) - [Car hire near Fisherman's Village ](https://www.expedia.co.uk/Compare-Cheap-Car-Hire-In-Fishermans-Village.d6126504.Car-Hire-Guide) - [Car hire Koh Samui ](https://www.expedia.co.uk/Compare-Cheap-Car-Hire-In-Koh-Samui.d6035013.Car-Hire-Guide) - [Car hire near Lamai Beach ](https://www.expedia.co.uk/Compare-Cheap-Car-Hire-In-Lamai-Beach.d6050552.Car-Hire-Guide) - [Convertible Car Hire in Koh Samui ](https://www.expedia.co.uk/Convertible-Car-Rentals-In-Koh-Samui.d6035013-tConvertible.Car-Rental-Guide-Class) - [People Carrier Car Hire in Koh Samui ](https://www.expedia.co.uk/Van-Car-Rentals-In-Koh-Samui.d6035013-tVan.Car-Rental-Guide-Class) - [People Carrier Car Hire near Lamai Beach ](https://www.expedia.co.uk/Van-Car-Rentals-In-Lamai-Beach.d6050552-tVan.Car-Rental-Guide-Class) ### Holiday Homes - [Koh Samui Holiday Rentals ](https://www.expedia.co.uk/Koh-Samui-Holiday-Rentals.d6035013.Travel-Guide-HolidayRentals) - [Lamai Holiday Rentals ](https://www.expedia.co.uk/Lamai-Holiday-Rentals.d6306954.Travel-Guide-HolidayRentals) ### Other - [Things to do in Lamai ](https://www.expedia.co.uk/Things-To-Do-In-Lamai.d6306954.Travel-Guide-Activities) \*Available to Expedia members.