Title: £166 Cheap Flights from London to Mariehamn (LHR to MHQ) - Expedia.co.uk ![Small sailboat sailing against Finland shoreline](https://images.trvl-media.com/place/2294/cca94f34-208c-4ef2-91ec-f719ab7252a2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/2294/cca94f34-208c-4ef2-91ec-f719ab7252a2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £166 Cheap Flights from London (LHR) to Mariehamn (MHQ) [View £166 flight on Sat, 20 Jun 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:LHR,to:MHQ,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:165.15&airProductToken=AQptCjUIwbIBEgQxMzQwGOuJASCHWSimmJADMMuZkAM4UUAAWAFqCEVTTElHSFQxcghRTlkwUzlCWgo0CMGyARIDMjE1GIdZIOyBASjwmpADMKebkAM4UUABWAFqCEVTTElHSFQxcghRTlkwUzlCWhIKCAIQARgBKgJBWRgBIgQIARABKAIoAygEMA8) ## Popular airlines from Heathrow Airport (LHR) to Mariehamn (MHQ) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AY.svg) Finnair [](https://www.expedia.co.uk/Flights-Search?leg1=from:LHR,to:MHQ,departure:13/04/2026TANYT&leg2=from:MHQ,to:LHR,departure:20/04/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AY"}}]) - ![](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\* - ![](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\* - ![](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 Mariehamn (MHQ) Prices were available within the past 7 days and start at £166 for one-way flights and £332 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Wed, 8 Jul - Sun, 12 Jul LHR London MHQ Mariehamn £332 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:08/07/2026TANYT&leg2=from:MHQ,to:LHR,departure:12/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:331.15&airProductToken=AQptCjUIwbIBEgQxMzM4GOuJASCHWSjm55EDMJDpkQM4T0AAWAFqCEVTTElHSFQxcghPTlkwUzlCWgo0CMGyARIDMjEzGIdZIOyBASiE7ZEDMLvtkQM4T0ABWAFqCEVTTElHSFQxcghPTlkwUzlCWgptCjQIwbIBEgMyMTYY7IEBIIdZKNSVkgMwhpaSAzhTQABYAWoIRVNMSUdIVDFyCFNOWTBTOUJaCjUIwbIBEgQxMzMxGIdZIOuJASismpIDMOqbkgM4U0ABWAFqCEVTTElHSFQxcghTTlkwUzlCWhIKCAIQARgBKgJBWRgBIgQIARABKAIoAygEMA8) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Sun, 13 Sept - Fri, 18 Sept LHR London MHQ Mariehamn £347 Return found 12 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:13/09/2026TANYT&leg2=from:MHQ,to:LHR,departure:18/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:346.15&airProductToken=AQptCjUIwbIBEgQxMzM4GOuJASCHWSjG2ZcDMPDalwM4T0AAWAFqCEVDTEFTU0lDcghPTk4wUzlDWgo0CMGyARIDMjE1GIdZIOyBASid5ZcDMNTllwM4T0ABWAFqCEVDTEFTU0lDcghPTk4wUzlDWgptCjQIwbIBEgMyMTYY7IEBIIdZKPKSmAMwpJOYAzhaQABYAWoIRUNMQVNTSUNyCFpOTjBTOUNaCjUIwbIBEgQxMzM3GIdZIOuJASiMm5gDMMWcmAM4WkABWAFqCEVDTEFTU0lDcghaTk4wUzlDWhIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Wed, 8 Jul - Sun, 12 Jul LHR London MHQ Mariehamn £351 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:08/07/2026TANYT&leg2=from:MHQ,to:LHR,departure:12/07/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:350.15&airProductToken=AQptCjUIwbIBEgQxMzQwGOuJASCHWSjm4pEDMIvkkQM4UUAAWAFqCEVTTElHSFQxcghRTlkwUzlCWgo0CMGyARIDMjEzGIdZIOyBASi65ZEDMPHlkQM4UUABWAFqCEVTTElHSFQxcghRTlkwUzlCWgptCjQIwbIBEgMyMTYY7IEBIIdZKNSVkgMwhpaSAzhTQABYAWoIRVNMSUdIVDFyCFNOWTBTOUJaCjUIwbIBEgQxMzMxGIdZIOuJASismpIDMOqbkgM4U0ABWAFqCEVTTElHSFQxcghTTlkwUzlCWhIKCAIQARgBKgJBWRgBIgQIARABKAIoAygEMA8) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Sun, 13 Sept - Fri, 18 Sept LHR London MHQ Mariehamn £356 Return found 12 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:13/09/2026TANYT&leg2=from:MHQ,to:LHR,departure:18/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:355.15&airProductToken=AQptCjUIwbIBEgQxMzM4GOuJASCHWSjG2ZcDMPDalwM4T0AAWAFqCEVDTEFTU0lDcghPTk4wUzlDWgo0CMGyARIDMjE1GIdZIOyBASid5ZcDMNTllwM4T0ABWAFqCEVDTEFTU0lDcghPTk4wUzlDWgptCjQIwbIBEgMyMTYY7IEBIIdZKPKSmAMwpJOYAzhPQABYAWoIRUNMQVNTSUNyCE9OTjBTOUNaCjUIwbIBEgQxMzM1GIdZIOuJASiZmpgDMNKbmAM4T0ABWAFqCEVDTEFTU0lDcghPTk4wUzlDWhIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Fri, 18 Sept - Sun, 20 Sept LHR London MHQ Mariehamn £359 Return found 12 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:18/09/2026TANYT&leg2=from:MHQ,to:LHR,departure:20/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:358.96&airProductToken=AQptCjUIwbIBEgQxMzMyGOuJASCHWSiQjpgDML-PmAM4T0AAWAFqCEVDTEFTU0lDcghPTk4wUzlDWgo0CMGyARIDMjE1GIdZIOyBASiikpgDMNmSmAM4T0ABWAFqCEVDTEFTU0lDcghPTk4wUzlDWgptCjQIwbIBEgMyMTYY7IEBIIdZKJSpmAMwxqmYAzhaQABYAWoIRUNMQVNTSUNyCFpOTjBTOUNaCjUIwbIBEgQxMzM5GIdZIOuJASies5gDMNy0mAM4WkABWAFqCEVDTEFTU0lDcghaTk4wUzlDWhIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Sun, 31 May - Tue, 9 Jun LHR London MHQ Mariehamn £366 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:31/05/2026TANYT&leg2=from:MHQ,to:LHR,departure:09/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:365.05&airProductToken=AQptCjUIwbIBEgQxMzM4GOuJASCHWSimvI4DMNC9jgM4UUAAWAFqCEVDTEFTU0lDcghRTk4wUzlDWgo0CMGyARIDMjE1GIdZIOyBASj9x44DMLTIjgM4UUABWAFqCEVDTEFTU0lDcghRTk4wUzlDWgptCjQIwbIBEgMyMTQY7IEBIIdZKNKijwMwhKOPAzhaQABYAWoIRUNMQVNTSUNyCFpOTjBTOUNaCjUIwbIBEgQxMzMxGIdZIOuJASiMp48DMMqojwM4WkABWAFqCEVDTEFTU0lDcghaTk4wUzlDWhIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Fri, 28 Aug - Mon, 31 Aug LHR London MHQ Mariehamn £372 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:28/08/2026TANYT&leg2=from:MHQ,to:LHR,departure:31/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:371.15&airProductToken=AQptCjUIwbIBEgQxMzQwGOuJASCHWSjGoJYDMOuhlgM4VkAAWAFqCEVTTElHSFQxcghWTlkwUzlCWgo0CMGyARIDMjE1GIdZIOyBASiCppYDMLmmlgM4VkABWAFqCEVTTElHSFQxcghWTlkwUzlCWgptCjQIwbIBEgMyMTYY7IEBIIdZKK3IlgMw38iWAzhRQABYAWoIRVNMSUdIVDFyCFFOWTBTOUJaCjUIwbIBEgQxMzM1GIdZIOuJASjZz5YDMJLRlgM4UUABWAFqCEVTTElHSFQxcghRTlkwUzlCWhIKCAIQARgBKgJBWRgBIgQIARABKAIoAygEMA8) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Mon, 21 Sept - Sun, 27 Sept LHR London MHQ Mariehamn £373 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:21/09/2026TANYT&leg2=from:MHQ,to:LHR,departure:27/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:372.91&airProductToken=AQptCjUIwbIBEgQxMzMyGOuJASCHWSjwr5gDMJ-xmAM4T0AAWAFqCEVDTEFTU0lDcghPTk4wUzlDWgo0CMGyARIDMjE1GIdZIOyBASj9s5gDMLS0mAM4T0ABWAFqCEVDTEFTU0lDcghPTk4wUzlDWgptCjQIwbIBEgMyMTYY7IEBIIdZKPT3mAMwpviYAzhPQABYAWoIRUNMQVNTSUNyCE9OTjBTOUNaCjUIwbIBEgQxMzMxGIdZIOuJASjM_JgDMIr-mAM4T0ABWAFqCEVDTEFTU0lDcghPTk4wUzlDWhIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Sun, 31 May - Fri, 5 Jun LHR London MHQ Mariehamn £375 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:31/05/2026TANYT&leg2=from:MHQ,to:LHR,departure:05/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:374.05&airProductToken=AQptCjUIwbIBEgQxMzM4GOuJASCHWSimvI4DMNC9jgM4UUAAWAFqCEVDTEFTU0lDcghRTk4wUzlDWgo0CMGyARIDMjE1GIdZIOyBASj9x44DMLTIjgM4UUABWAFqCEVDTEFTU0lDcghRTk4wUzlDWgptCjQIwbIBEgMyMTYY7IEBIIdZKNL1jgMwhPaOAzhPQABYAWoIRUNMQVNTSUNyCE9OTjBTOUNaCjUIwbIBEgQxMzMxGIdZIOuJASiM-o4DMMr7jgM4T0ABWAFqCEVDTEFTU0lDcghPTk4wUzlDWhIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) ![Finnair](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AY.gif) Sat, 12 Sept - Fri, 18 Sept LHR London MHQ Mariehamn £383 Return found 12 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LHR,to:MHQ,departure:12/09/2026TANYT&leg2=from:MHQ,to:LHR,departure:18/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:382.15&airProductToken=AQptCjUIwbIBEgQxMzM4GOuJASCHWSimzpcDMNDPlwM4TkAAWAFqCEVDTEFTU0lDcghOTk4wUzlDWgo0CMGyARIDMjE1GIdZIOyBASjk2ZcDMJvalwM4TkABWAFqCEVDTEFTU0lDcghOTk4wUzlDWgptCjQIwbIBEgMyMTYY7IEBIIdZKPKSmAMwpJOYAzhaQABYAWoIRUNMQVNTSUNyCFpOTjBTOUNaCjUIwbIBEgQxMzM3GIdZIOuJASiMm5gDMMWcmAM4WkABWAFqCEVDTEFTU0lDcghaTk4wUzlDWhIKCAEQARgBKgJBWRgBIgQIARABKAIoAygEMAE) ## Travel information | Origin airport | Heathrow | | ------------------- | --------- | | Destination airport | Mariehamn | | Airlines serving | Finnair | | Return price | £331 | | Distance | 1575 km | ## Book with confidence # Compare flights from London to Mariehamn easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Mariehamn. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Mariehamn in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Mariehamn. 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 Mariehamn (MHQ) The easiest way to view the best deals on flights from London to Mariehamn 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 Mariehamn start at just £332 and range up to £383\. To find an even better deal, try - being flexible on your dates – midweek flights can be cheaper - looking for other airports near London and Mariehamn - booking your flight during July, 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 Mariehamn flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Mariehamn 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. 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