Title: Cheap Flights to Sieo - Expedia.co.uk ![Default HTG hotel image](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £50 Cheap Flights to Sieo [View £50 flight on Mon, 8 Jun 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:BKK,to:UTH,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:49.10&airProductToken=AQotCisI1I4BEgEyGMFSIPQ8KKCOjwMw5o6PAzhUQABYAWoFRUNPRlhyBVRYT0ZYEgoIARABGAEqAlRHGAEiBAgBEAEoAigDKAQwAQ) - [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 [Hotels in Sieo](https://expedia.co.uk/Sieo-Hotels.d3000734988.Travel-Guide-Hotels)[Sieo Car Hire](https://expedia.co.uk/Compare-Cheap-Car-Hire-In-Sieo.d3000734988.Car-Hire-Guide)[Sieo Holidays](https://expedia.co.uk/Sieo.d3000734988.Holidays-City-Breaks) ## Popular airlines - ![](https://a.travel-assets.com/air/airlines/fd_sq.svg) Thai AirAsia [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sieo, Mueang Loei, Loei Province, Thailand,departure:12/03/2026TANYT&leg2=from:Sieo, Mueang Loei, Loei Province, Thailand,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"FD"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_H1.svg) Hahn Air Systems [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sieo, Mueang Loei, Loei Province, Thailand,departure:12/03/2026TANYT&leg2=from:Sieo, Mueang Loei, Loei Province, Thailand,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"H1"}}]) - ![](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:CMH,to:Sieo, Mueang Loei, Loei Province, Thailand,departure:12/03/2026TANYT&leg2=from:Sieo, Mueang Loei, Loei Province, Thailand,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TG"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DD.svg) Nok Air [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sieo, Mueang Loei, Loei Province, Thailand,departure:12/03/2026TANYT&leg2=from:Sieo, Mueang Loei, Loei Province, Thailand,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DD"}}]) - ![](https://a.travel-assets.com/air/airlines/sl_sq.svg) Thai Lion Mantari [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sieo, Mueang Loei, Loei Province, Thailand,departure:12/03/2026TANYT&leg2=from:Sieo, Mueang Loei, Loei Province, Thailand,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_TK.svg) Turkish Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sieo, Mueang Loei, Loei Province, Thailand,departure:12/03/2026TANYT&leg2=from:Sieo, Mueang Loei, Loei Province, Thailand,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TK"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_MH.svg) Malaysia Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sieo, Mueang Loei, Loei Province, Thailand,departure:12/03/2026TANYT&leg2=from:Sieo, Mueang Loei, Loei Province, Thailand,to:CMH,departure:19/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"MH"}}]) - ![](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 round-trip flights to Sieo Prices were available within the past 7 days and start at £50 for one-way flights and £64 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Thai Lion Mantari](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SL.gif) Tue, 10 Mar - Tue, 24 Mar DMK Bangkok UTH Udon Thani £64 Return found 6 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:DMK,to:UTH,departure:10/03/2026TANYT&leg2=from:UTH,to:DMK,departure:24/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:63.90&airProductToken=AQohCh8I05gBEgM2MTYYg1Mg9Dwopp-HAzDnn4cDOE9AAFgBCiEKHwjTmAESAzYxNxj0PCCDUyjPvYgDMJC-iAM4T0AAWAESCggBEAEYASoCR1AYASIECAEQASgEMAE) ![Thai Airways International](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TG.gif) Mon, 16 Mar - Mon, 23 Mar BKK Bangkok UTH Udon Thani £96 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BKK,to:UTH,departure:16/03/2026TANYT&leg2=from:UTH,to:BKK,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:95.30&airProductToken=AQotCisI1I4BEgEyGMFSIPQ8KJvdhwMw3N2HAzhUQABYAWoFRUNPRlhyBVRYUkZYCi0KKwjUjgESATUY9DwgwVIorq-IAzD0r4gDOFRAAFgBagVFQ09GWHIFVFhSRlgSCggBEAEYASoCVEcYASIECAEQASgCKAQoBjAB) ![Hahn Air Systems](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/h1.gif) Wed, 11 Mar - Wed, 18 Mar BKK Bangkok UTH Udon Thani £115 Return just found [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BKK,to:UTH,departure:11/03/2026TANYT&leg2=from:UTH,to:BKK,departure:18/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:114.70&airProductToken=AQo0CjIIyGISBDQ3ODcYwVIg9Dwo2qWHAzCgpocDOEtAAFgBcgVLT1dWWnoKCNa0ARIENDc4Nwo0CjIIyGISBDQ3ODgY9DwgwVIonvWHAzDp9YcDOEtAAFgBcgVLT1dWWnoKCNa0ARIENDc4OBIKCAEQARgBKgJIUhgBIgQIARABKAIoAygEMAE) ![Air India](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AI.gif) Sun, 1 Mar - Sun, 8 Mar DXB Dubai UTH Udon Thani £520 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:DXB,to:UTH,departure:01/03/2026TANYT&leg2=from:UTH,to:DXB,departure:08/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:519.30&airProductToken=AQqbAQoyCMGSARIDOTMwGOMNIINZKKO3hgMw9biGAzhXQABYAWoHRUNPVkFMVXIIV1UyWVhTRFgKMwjBkgESBDIzMzYYg1kgwVIojr6GAzCSwIYDOFdAAVgBagdFQ09WQUxVcghXVTJZWFNEWAowCNSOARIBNBjBUiD0PCiqwoYDMPDChgM4S0ABWAFqB0VDT1ZBTFVyCFdVMllYU0RYCpsBCjAI1I4BEgE5GPQ8IMFSKOOJhwMwqYqHAzhLQABYAWoHRUNPVkFMVXIIVVUyWVhTRFgKMwjBkgESBDIzNTMYwVIgwWMokZKHAzCklIcDOFVAAVgBagdFQ09WQUxVcghVVTJZWFNEWAoyCMGSARIDOTgzGMFjIOMNKKaVhwMw85aHAzhVQAFYAWoHRUNPVkFMVXIIVVUyWVhTRFgSCggBEAEYASoCQUkYASIECAEQASgCKAMoBDAB) ![Qatar Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/QR.gif) Tue, 21 Apr - Tue, 5 May LGW London UTH Udon Thani £656 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LGW,to:UTH,departure:21/04/2026TANYT&leg2=from:UTH,to:LGW,departure:05/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:655.50&airProductToken=AQpiCiAI0aQBEgMzMzAYy7EBIMM7KID2igMwi_mKAzhPQABYAQofCNGkARIDODMwGMM7IMFSKMT6igMwxf2KAzhPQAFYAQodCNSOARIBNBjBUiD0PCj7_4oDMMGAiwM4U0ABWAEKYgodCNSOARIBORj0PCDBUijBlowDMIKXjAM4U0AAWAEKHwjRpAESAzgyNxjBUiDDOyjZmIwDMOSbjAM4T0ABWAEKIAjRpAESAzMyNxjDOyDLsQEowJ2MAzDpoIwDOE9AAVgBEgoIARABGAEqAlFSGAEiBAgBEAEoBDAB) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-uk-fr-de.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Holiday Sale Members save up to 40% on hotels and holiday homes. Plan this year’s big trip and save. [Book now](https://expedia.co.uk/cheap-deals?rfrr=FTG_SPRING_PROMO_) ## Book with confidence # Expedia flights to Sieo Searching for cheap flights to Sieo? No travel company presents more choices than Expedia if you're looking to compare flights to Sieo. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Mueang Loei. Expedia provides the cheapest flights to many destinations in Mueang Loei and you may find even greater savings if you combine your flight with a hotel stay in Sieo. Expedia is the largest online travel agency which means that Expedia have access to cheap flights. So make sure you check Expedia regularly for these bargain flights because the cheapest airline tickets sell out fast. Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to Sieo for that period and let you choose your preferred time and airline. If you need additional assistance, Expedia Customer Service representatives are available from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends. Our capable staff will be able to help you with any questions regarding your Sieo flight, or other booking questions that may arise. When you book flights with Expedia you can rest assured that you have booked the best flight at the lowest price. ## Travel information | Destination airport | Udon Thani Intl. | | ----------------------------- | ---------------- | | Destination airport IATA code | UTH | | Destination city name | Udon Thani | | Return price | £64 | ## Trending flights to Sieo Prices were available within the past 7 days and start at £50 for one-way flights and £64 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Qatar Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/QR.gif) Tue, 21 Apr - Tue, 5 May LGW London UTH Udon Thani £656 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LGW,to:UTH,departure:21/04/2026TANYT&leg2=from:UTH,to:LGW,departure:05/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:655.50&airProductToken=AQpiCiAI0aQBEgMzMzAYy7EBIMM7KID2igMwi_mKAzhPQABYAQofCNGkARIDODMwGMM7IMFSKMT6igMwxf2KAzhPQAFYAQodCNSOARIBNBjBUiD0PCj7_4oDMMGAiwM4U0ABWAEKYgodCNSOARIBORj0PCDBUijBlowDMIKXjAM4U0AAWAEKHwjRpAESAzgyNxjBUiDDOyjZmIwDMOSbjAM4T0ABWAEKIAjRpAESAzMyNxjDOyDLsQEowJ2MAzDpoIwDOE9AAVgBEgoIARABGAEqAlFSGAEiBAgBEAEoBDAB) \*Available to Expedia members.