Title: Cheap Flights to Sum Sao - 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 Sum Sao [View £50 flight on Thu, 12 Mar 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:BKK,to:UTH,departure:12/03/2026TANYT&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=AQotCisI1I4BEgEyGMFSIPQ8KJuwhwMw3LCHAzhUQABYAWoFRUNPRlhyBVRYT0ZYEgoIARABGAEqAlRHGAEiBAgBEAEoAigDKAQwAQ) - [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 Sum Sao](https://expedia.co.uk/Sum-Sao-Hotels.d3000735569.Travel-Guide-Hotels)[Sum Sao Car Hire](https://expedia.co.uk/Compare-Cheap-Car-Hire-In-Sum-Sao.d3000735569.Car-Hire-Guide)[Sum Sao Holidays](https://expedia.co.uk/Sum-Sao.d3000735569.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:Sum Sao, Phen, Udon Thani Province, Thailand,departure:18/03/2026TANYT&leg2=from:Sum Sao, Phen, Udon Thani Province, Thailand,to:CMH,departure:25/03/2026TANYT&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_TG.svg) Thai Airways International [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sum Sao, Phen, Udon Thani Province, Thailand,departure:18/03/2026TANYT&leg2=from:Sum Sao, Phen, Udon Thani Province, Thailand,to:CMH,departure:25/03/2026TANYT&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_H1.svg) Hahn Air Systems [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sum Sao, Phen, Udon Thani Province, Thailand,departure:18/03/2026TANYT&leg2=from:Sum Sao, Phen, Udon Thani Province, Thailand,to:CMH,departure:25/03/2026TANYT&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_DD.svg) Nok Air [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sum Sao, Phen, Udon Thani Province, Thailand,departure:18/03/2026TANYT&leg2=from:Sum Sao, Phen, Udon Thani Province, Thailand,to:CMH,departure:25/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DD"}}]) - ![](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:Sum Sao, Phen, Udon Thani Province, Thailand,departure:18/03/2026TANYT&leg2=from:Sum Sao, Phen, Udon Thani Province, Thailand,to:CMH,departure:25/03/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TK"}}]) - ![](https://a.travel-assets.com/air/airlines/sl_sq.svg) Thai Lion Mantari [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sum Sao, Phen, Udon Thani Province, Thailand,departure:18/03/2026TANYT&leg2=from:Sum Sao, Phen, Udon Thani Province, Thailand,to:CMH,departure:25/03/2026TANYT&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_MH.svg) Malaysia Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:CMH,to:Sum Sao, Phen, Udon Thani Province, Thailand,departure:18/03/2026TANYT&leg2=from:Sum Sao, Phen, Udon Thani Province, Thailand,to:CMH,departure:25/03/2026TANYT&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 Sum Sao Prices were available within the past 7 days and start at £50 for one-way flights and £66 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, 21 Apr - Tue, 12 May DMK Bangkok UTH Udon Thani £66 Return found 3 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:DMK,to:UTH,departure:21/04/2026TANYT&leg2=from:UTH,to:DMK,departure:12/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:65.30&airProductToken=AQohCh8I05gBEgM2MDQYg1Mg9Dwon_SKAzDb9IoDOE9AAFgBCiEKHwjTmAESAzYwMRj0PCCDUyjg34wDMJzgjAM4T0AAWAESCggBEAEYASoCR1AYASIECAEQASgEMAE) ![Thai Airways International](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TG.gif) Tue, 24 Nov - Thu, 26 Nov BKK Bangkok UTH Udon Thani £97 Return found 4 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BKK,to:UTH,departure:24/11/2026TANYT&leg2=from:UTH,to:BKK,departure:26/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:96.30&airProductToken=AQotCisI1I4BEgEyGMFSIPQ8KLv7nQMw_PudAzhUQABYAWoFRUNPRlhyBVRYUkZYCi0KKwjUjgESATMY9DwgwVIo2pKeAzCbk54DOFRAAFgBagVFQ09GWHIFVFhSRlgSCggBEAEYASoCVEcYASIECAEQASgCKAMoBDAB) ![Hahn Air Systems](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/h1.gif) Thu, 6 Aug - Thu, 27 Aug BKK Bangkok UTH Udon Thani £115 Return found 3 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:BKK,to:UTH,departure:06/08/2026TANYT&leg2=from:UTH,to:BKK,departure:27/08/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:114.10&airProductToken=AQo0CjIIyGISBDQ3MjAYwVIg9Dwo96iUAzC9qZQDOEtAAFgBcgVLT1dWWnoKCNa0ARIENDcyMBIKCAEQARgBKgJIUhgBIgQIARABKAIoAygEMAE) ![Air India](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AI.gif) Mon, 4 May - Fri, 8 May COK Kochi UTH Udon Thani £402 Return found 23 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:COK,to:UTH,departure:04/05/2026TANYT&leg2=from:UTH,to:COK,departure:08/05/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:401.70&airProductToken=AQqcAQozCMGSARIEMjc0NBjCUyDBYyjMhYwDMN2GjAM4VEAAWAFqB0VDT1ZBTFVyCFRQMllYU0JPCjMIwZIBEgQyMzM3GMFjIMFSKKCIjAMwpIqMAzhUQAFYAWoHRUNPVkFMVXIIVFAyWVhTQk8KMAjUjgESATIYwVIg9Dwo4I-MAzCmkIwDOEtAAVgBagdFQ09WQUxVcghUUDJZWFNCTwqcAQowCNSOARIBNRj0PCDBUijftIwDMKW1jAM4S0AAWAFqB0VDT1ZBTFVyCFRMMllYU0RZCjMIwZIBEgQyMzAzGMFSIINZKN24jAMw9bqMAzhUQAFYAWoHRUNPVkFMVXIIVEwyWVhTRFkKMwjBkgESBDI4ODMYg1kgwlMo-byMAzDBvowDOFRAAVgBagdFQ09WQUxVcghUTDJZWFNEWRIKCAEQARgBKgJBSRgBIgQIARABKAIoAygEMAE) ![Malaysia Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/MH.gif) Tue, 17 Mar - Fri, 20 Mar HYD Hyderabad UTH Udon Thani £562 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:HYD,to:UTH,departure:17/03/2026TANYT&leg2=from:UTH,to:HYD,departure:20/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:561.90&airProductToken=AQqgAQovCM2QARIDMTk5GIceIIpdKJTmhwMwouiHAzhOQABYAWoFQkFTSUNyB05CWDFZSVoKLwjNkAESAzc3NBiKXSDBUii07IcDMMDthwM4TkABWAFqBUJBU0lDcgdOQlgxWUlaCjwIzZABEgQ1ODUyGMFSIPQ8KKr2hwMw8PaHAzhOQAFYAWoFQkFTSUNyB05CWDFZSVp6CgjUjgESBDU4NTIKrQEKPAjNkAESBDU4NTgY9DwgwVIo-oqIAzC7i4gDOFFAAFgBagVCQVNJQ3IHUUJYMVlJWnoKCNSOARIENTg1OAo8CM2QARIENTg2MxjBUiCKXSjpjogDMOuPiAM4UUABWAFqBUJBU0lDcgdRQlgxWUlaegoI1I4BEgQ1ODYzCi8IzZABEgMxOTgYil0ghx4oxZCIAzDOkogDOFFAAVgBagVCQVNJQ3IHUUJYMVlJWhIKCAEQARgBKgJNSBgBIgQIARABKAIoBCgGMAE) ![](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_) ## Frequently asked questions ### What is the name of Sum Sao's airport? ### How far is Udon Thani Intl. Airport (UTH) from central Sum Sao? ### What airport is best to fly into Sum Sao? ### How many airlines fly to Sum Sao? ### Which airlines fly to Sum Sao? ### How many nonstop flights are there to Sum Sao? ### Where are the most popular flights to Sum Sao departing from? ### How long is the flight to Sum Sao Airport? ### How to book the cheapest flight to Sum Sao? ### Do you have any tips for my flight to Sum Sao? > - The trick to having a great travel experience is to pack in advance. Start with the essentials: passport, travel docs, cash and daily medications. Next, take on board items that'll help pass the time, like some electronic gadgets or a few magazines. It's also wise to pack your chargers, a neck pillow and a pair of noise-cancelling headphones. Finally, don't forget to toss in toiletries like a toothbrush, deodorant and a clean T-shirt. > > > Do not pack the following items in your hand luggage: > > > - Check carefully that you don't have sharp objects (like a pocket knife) hiding in the bottom of your hand luggage. Other restricted items include explosive or flammable products, like aerosols and matches, and liquids and gels in containers larger than 3.4 ounces (100 millilitres). > > > What to wear on a flight: > > > - Your aim is to feel as comfortable as possible. Pick a pair of slip-on shoes, dress in loose, natural-fibre clothing and remember to take a jacket in case you get chilly in the cabin. > - Deep vein thrombosis (DVT), a blood clot condition caused by extended periods of inactivity, can be a risk on long-haul flights. Make a point of walking around the cabin or do some gentle exercises in your seat to promote better circulation. ### How to get through airport security fast when flying to Sum Sao? > - First things first. Your boarding pass and travel ID will need to be presented to security personnel. Have them easily accessible so you don't hold up the line. > - After that, both you and your carry-on bag must be X-rayed. To speed things up, remove anything that is likely to trigger the alarm. Items like your belt, jacket and headphones need to go through the machine. > - All your electronic gadgets, including your tablet and phone, are also required to be scanned. > - Any gels or liquids, such as shampoo or hairspray, that you want to take on board need to be in containers no larger than 3.4 ounces (100 millilitres). Also, everything must fit inside a quart-size (one litre), clear zip-lock bag. > - There's a possibility that you'll need to remove your shoes for scanning, so wearing slip-on shoes is always a wise idea. > - Take all prohibited items out of your carry-on bag. If you have any sharp objects like a pocket knife or tools, put them in your checked luggage. They won't be allowed on board and will be confiscated. ## Book with confidence # Expedia flights to Sum Sao Searching for cheap flights to Sum Sao? No travel company presents more choices than Expedia if you're looking to compare flights to Sum Sao. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Phen. Expedia provides the cheapest flights to many destinations in Phen and you may find even greater savings if you combine your flight with a hotel stay in Sum Sao. 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 Sum Sao 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 Sum Sao 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 | £65 | ## Trending flights to Sum Sao Prices were available within the past 7 days and start at £50 for one-way flights and £66 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, 10 Mar - Tue, 2 Jun LGW London UTH Udon Thani £643 Return found 8 hours ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:LGW,to:UTH,departure:10/03/2026TANYT&leg2=from:UTH,to:LGW,departure:02/06/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:642.77&airProductToken=AQqAAQoqCNGkARIDMzMwGMuxASDDOyjonYcDMPOghwM4T0AAWAFyCE9MR0JOMVJFCikI0aQBEgM4MzgYwzsgwVIo4aGHAzDspIcDOE9AAVgBcghPTEdCTjFSRQonCNSOARIBNBjBUiD0PCjKp4cDMJCohwM4U0ABWAFyCE9MR0JOMVJFCoABCicI1I4BEgE1GPQ8IMFSKP_NjgMwxc6OAzhTQABYAXIIT0xHQk4xUkUKKQjRpAESAzgzNRjBUiDDOyjY0I4DMOPTjgM4T0ABWAFyCE9MR0JOMVJFCioI0aQBEgMzMjkYwzsgy7EBKKvVjgMw1NiOAzhPQAFYAXIIT0xHQk4xUkUSCggIEAIYASoCUVIYASIECAEQASgHKAMoBDAB) \*Available to Expedia members.