Title: £439 Cheap Flights from Seattle to Kathmandu (SEA to KTM) - Expedia.co.uk ![Golden Temple which includes a city](https://images.trvl-media.com/place/6114526/f9554142-18d4-40a8-a018-3ce60241ed63.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6114526/f9554142-18d4-40a8-a018-3ce60241ed63.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £439 Cheap Flights from Seattle (SEA) to Kathmandu (KTM) [View £439 flight on Fri, 27 Feb 2026](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:SEA,to:KTM,departure:27/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:438.30&airProductToken=AQp1CjgI06IBEgIyNxiSASCSaijtpYYDMOmthgM4S0AAWAFqDEVjb25vbXkgTGl0ZXIKSzE2VVNPQ0FQTwo5CNOiARIDNDQyGJJqIOpkKK-uhgMw5bCGAzhLQAFYAWoMRWNvbm9teSBMaXRlcgpLMTZVU09DQVBPEgoIAhABGAEqAlNRGAEiBAgBEAEoAigDKAQwDw) - [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 Seattle-Tacoma International Airport (SEA) to Tribhuvan Intl. Airport (KTM) - ![Emirates](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EK.svg) Emirates [](https://www.expedia.co.uk/Flights-Search?leg1=from:sea,to:ktm,departure:30/09/2025TANYT&leg2=from:ktm,to:sea,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EK"}}]) - ![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:sea,to:ktm,departure:30/09/2025TANYT&leg2=from:ktm,to:sea,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"QR"}}]) - ![Cathay Pacific](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_CX.svg) Cathay Pacific [](https://www.expedia.co.uk/Flights-Search?leg1=from:sea,to:ktm,departure:30/09/2025TANYT&leg2=from:ktm,to:sea,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"CX"}}]) - ![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:sea,to:ktm,departure:30/09/2025TANYT&leg2=from:ktm,to:sea,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SQ"}}]) - ![Turkish Airlines](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:sea,to:ktm,departure:30/09/2025TANYT&leg2=from:ktm,to:sea,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"TK"}}]) - ![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:sea,to:ktm,departure:30/09/2025TANYT&leg2=from:ktm,to:sea,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"KL"}}]) - ![Malaysia Airlines](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:sea,to:ktm,departure:30/09/2025TANYT&leg2=from:ktm,to:sea,departure:07/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"MH"}}]) ![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 Seattle (SEA) to Kathmandu (KTM) Prices were available within the past 7 days and start at £439 for one-way flights and £790 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Turkish Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TK.gif) Thu, 15 Jan - Wed, 21 Jan SEA Seattle KTM Kathmandu £790 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:15/01/2026TANYT&leg2=from:KTM,to:SEA,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:789.90&airProductToken=AQpUCigI1JYBEgMyMDQYkgEgyJwBKPTGggMwxMyCAzhXQABYAXIGV1YzWFBDCigI1JYBEgM3MjYYyJwBIOpkKPzPggMwpdOCAzhXQAFYAXIGV1YzWFBDClQKKAjUlgESAzcyNxjqZCDInAEo-oCDAzD9hIMDOFdAAFgBcgZXVjNYUEMKKAjUlgESAzIwMxjInAEgkgEo5I6DAzDhlIMDOFdAAVgBcgZXVjNYUEMSCggBEAEYASoCVEsYASIECAEQASgCKAMoBDAB) ![Singapore Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SQ.gif) Thu, 15 Jan - Wed, 21 Jan SEA Seattle KTM Kathmandu £791 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:15/01/2026TANYT&leg2=from:KTM,to:SEA,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:790.40&airProductToken=AQp1CjgI06IBEgIyNxiSASCSaiiNwoIDMInKggM4S0AAWAFqDEVjb25vbXkgTGl0ZXIKSzE2VVNSQ0FQTwo5CNOiARIDNDQyGJJqIOpkKO_VggMwpdiCAzhLQAFYAWoMRWNvbm9teSBMaXRlcgpLMTZVU1JDQVBPCncKOgjTogESAzQ0MRjqZCCSaijrhYMDMJeIgwM4TkAAWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkNNUE8KOQjTogESAjI4GJJqIJIBKLyJgwMwjpCDAzhOQAFYAWoNRWNvbm9teSBWYWx1ZXIKTjE2VVNSQ01QTxIKCAIQARgBKgJTURgBIgQIARABKAIoAygEMA8) ![Singapore Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SQ.gif) Thu, 15 Jan - Wed, 21 Jan SEA Seattle KTM Kathmandu £796 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:15/01/2026TANYT&leg2=from:KTM,to:SEA,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:795.70&airProductToken=AQp3CjkI06IBEgIyNxiSASCSaiiNwoIDMInKggM4TkAAWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkNNUE8KOgjTogESAzQ0MhiSaiDqZCjPyoIDMIXNggM4TkABWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkNNUE8Kdwo6CNOiARIDNDQxGOpkIJJqKOuFgwMwl4iDAzhOQABYAWoNRWNvbm9teSBWYWx1ZXIKTjE2VVNSQ01QTwo5CNOiARICMjgYkmogkgEovImDAzCOkIMDOE5AAVgBag1FY29ub215IFZhbHVlcgpOMTZVU1JDTVBPEgoIAhABGAEqAlNRGAEiBAgBEAEoAigDKAQwDw) ![Singapore Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SQ.gif) Thu, 15 Jan - Wed, 21 Jan SEA Seattle KTM Kathmandu £833 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:15/01/2026TANYT&leg2=from:KTM,to:SEA,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:832.60&airProductToken=AQp3CjkI06IBEgIyNxiSASCSaiiNwoIDMInKggM4TkAAWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkNNUE8KOgjTogESAzQ0MhiSaiDqZCjPyoIDMIXNggM4TkABWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkNNUE8Kdwo6CNOiARIDNDQxGOpkIJJqKOuFgwMwl4iDAzhOQABYAWoNRWNvbm9teSBWYWx1ZXIKTjE2VVNSQ01QTwo5CNOiARICMjgYkmogkgEo3JSDAzCum4MDOE5AAVgBag1FY29ub215IFZhbHVlcgpOMTZVU1JDTVBPEgoIAhABGAEqAlNRGAEiBAgBEAEoAigDKAQwDw) ![Singapore Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SQ.gif) Thu, 15 Jan - Wed, 21 Jan SEA Seattle KTM Kathmandu £856 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:15/01/2026TANYT&leg2=from:KTM,to:SEA,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:855.10&airProductToken=AQp1CjgI06IBEgIyNxiSASCSaiiNwoIDMInKggM4S0AAWAFqDEVjb25vbXkgTGl0ZXIKSzE2VVNSQ0FQTwo5CNOiARIDNDQyGJJqIOpkKO_VggMwpdiCAzhLQAFYAWoMRWNvbm9teSBMaXRlcgpLMTZVU1JDQVBPCncKOgjTogESAzQ0MRjqZCCSaijrhYMDMJeIgwM4TkAAWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkNNUE8KOQjTogESAjI4GJJqIJIBKNyUgwMwrpuDAzhOQAFYAWoNRWNvbm9teSBWYWx1ZXIKTjE2VVNSQ01QTxIKCAIQARgBKgJTURgBIgQIARABKAIoAygEMA8) ![Singapore Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SQ.gif) Thu, 15 Jan - Wed, 21 Jan SEA Seattle KTM Kathmandu £898 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:15/01/2026TANYT&leg2=from:KTM,to:SEA,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:897.10&airProductToken=AQp3CjkI06IBEgIyNxiSASCSaiiNwoIDMInKggM4TkAAWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkNNUE8KOgjTogESAzQ0MhiSaiDqZCjPyoIDMIXNggM4TkABWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkNNUE8KswEKOgjTogESAzQ0MRjqZCCSaijrhYMDMJeIgwM4TkAAWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkJNUE8KOQjTogESAjMyGJJqILJxKMuJgwMwtpCDAzhOQAFYAWoNRWNvbm9teSBWYWx1ZXIKTjE2VVNSQk1QTwo6CMGmARIDNzU4GLJxIJIBKImVgwMwkpaDAzhHQAFYAWoNRWNvbm9teSBWYWx1ZXIKTjE2VVNSQk1QTxIKCAIQARgBKgJTURgBIgQIARABKAIoAygEMA8) ![Singapore Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/SQ.gif) Thu, 15 Jan - Wed, 21 Jan SEA Seattle KTM Kathmandu £920 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:15/01/2026TANYT&leg2=from:KTM,to:SEA,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:919.70&airProductToken=AQp1CjgI06IBEgIyNxiSASCSaiiNwoIDMInKggM4S0AAWAFqDEVjb25vbXkgTGl0ZXIKSzE2VVNSQ0FQTwo5CNOiARIDNDQyGJJqIOpkKO_VggMwpdiCAzhLQAFYAWoMRWNvbm9teSBMaXRlcgpLMTZVU1JDQVBPCrQBCjoI06IBEgM0NDEY6mQgkmoo64WDAzCXiIMDOE5AAFgBag1FY29ub215IFZhbHVlcgpOMTZVU1JCTVBPCjkI06IBEgIzMhiSaiCycSjLiYMDMLaQgwM4TkABWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkJNUE8KOwjBpgESBDEzNDAYsnEgkgEo0JODAzDXlIMDOEdAAVgBag1FY29ub215IFZhbHVlcgpOMTZVU1JCTVBPEgoIAhABGAEqAlNRGAEiBAgBEAEoAigDKAQwDw) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, 15 Jan - Wed, 21 Jan SEA Seattle KTM Kathmandu £923 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:15/01/2026TANYT&leg2=from:KTM,to:SEA,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:922.20&airProductToken=AQq2AQo8CMGmARIEMTMwMBiSASCLuAEow8SCAzDlxYIDOE9AAFgBag1FY29ub215IFZhbHVlcgpOMTZVU1JBTVBPCjoI06IBEgIzNxiLuAEgkmoorciCAzDb0IIDOE5AAVgBag1FY29ub215IFZhbHVlcgpOMTZVU1JBTVBPCjoI06IBEgM0NDIYkmog6mQo79WCAzCl2IIDOE5AAVgBag1FY29ub215IFZhbHVlcgpOMTZVU1JBTVBPCncKOgjTogESAzQ0MRjqZCCSaijrhYMDMJeIgwM4TkAAWAFqDUVjb25vbXkgVmFsdWVyCk4xNlVTUkNNUE8KOQjTogESAjI4GJJqIJIBKLyJgwMwjpCDAzhOQAFYAWoNRWNvbm9teSBWYWx1ZXIKTjE2VVNSQ01QTxIKCAIQARgBKgJTURgBIgQIARABKAIoAygEMA8) ![Cathay Pacific](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/CX.gif) Tue, 4 Nov - Thu, 4 Dec SEA Seattle KTM Kathmandu £1,040 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:04/11/2025TANYT&leg2=from:KTM,to:SEA,departure:04/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1040.00&airProductToken=AQqlAQo2CMOwARIENzk4ORiSASCLuAEompz8AjDDnfwCOE5AAFgBaglFQ09OTElHSFRyCE5LMjFVU0hSCjUIw7ABEgM4ODEYi7gBIMcyKPie_AIwuKb8AjhOQAFYAWoJRUNPTkxJR0hUcghOSzIxVVNIUgo0CMOwARIDNjAzGMcyIOpkKPSr_AIwr678AjhOQAFYAWoJRUNPTkxJR0hUcghOSzIxVVNIUgqlAQo0CMOwARIDNjQwGOpkIMcyKPrp_gIwiOz-AjhOQABYAWoJRUNPTkxJR0hUcghOSzIxVVNIUgo1CMOwARIDODM4GMcyILiNASjC8P4CMPT1_gI4TkABWAFqCUVDT05MSUdIVHIITksyMVVTSFIKNgjBpgESBDIyMjMYuI0BIJIBKP_4_gIwvvn-AjhOQAFYAWoJRUNPTkxJR0hUcghOSzIxVVNIUhIKCAEQARgBKgJDWBgBIgQIARABKAIoAygEMAE) ![EVA Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BR.gif) Thu, 15 Jan - Wed, 21 Jan SEA Seattle KTM Kathmandu £1,054 Return found 2 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SEA,to:KTM,departure:15/01/2026TANYT&leg2=from:KTM,to:SEA,departure:21/01/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1053.20&airProductToken=AQp3CiUIwqQBEgIyMxiSASDzIyiCyYIDMJjPggM4VkAAWAFyBVZMWFVaCiYIwqQBEgM4NjcY8yMgxzIoztGCAzDG0oIDOFZAAVgBcgVWTFhVWgomCMOwARIDNjAzGMcyIOpkKPTVggMwr9iCAzhTQAFYAXIFVkxYVVoKdwomCMOwARIDNjQwGOpkIMcyKPqFgwMwiIiDAzhTQABYAXIFVkxYVVoKJgjCpAESAzg2OBjHMiDzIyjKi4MDMLiMgwM4VkABWAFyBVZMWFVaCiUIwqQBEgIyNBjzIyCSASiEkIMDMISVgwM4VkABWAFyBVZMWFVaEgoIARABGAEqAkJSGAEiBAgBEAEoAigDKAQwAQ) ## Find the cheapest month to fly from Seattle (SEA) to Kathmandu (KTM) ### September is typically the cheapest month to fly From £752 - £1,335 per traveller. ## Frequently asked questions ### How much is a flight from Seattle - Tacoma Intl. Airport (SEA) to KTM? > Round-trip journeys between Sea-Tac Airport and Tribhuvan Intl. Airport start from £790. This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to Tribhuvan Intl. Airport (KTM)? > Most flights can be cancelled online, but whether or not you incur a fee all comes down to your airline. If you do have to cancel your trip, follow the instructions in the [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to Tribhuvan Intl. Airport (KTM) that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SEA to Tribhuvan Intl. Airport flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from SEA to Tribhuvan Intl. Airport (KTM)? > You'll have 11,200 kilometres to cover on the long-haul SeaTac to Kathmandu route. Dress in layers of comfortable clothes and consider taking a neck pillow with you. ### Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Tribhuvan Intl. Airport? > Flying nonstop between Sea-Tac Airport and KTM isn't possible at present. However, you'll still be able to find a flight to Kathmandu with at least one stop. ### Are Seattle - Tacoma Intl. Airport (SEA) to Tribhuvan Intl. Airport flight tickets cheaper when they're purchased at the last minute? > Booking your trip from SEA to Tribhuvan Intl. Airport last minute could save you some cash. However, it could end up costing a great deal more! If you'd rather not take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time. ## Travel information | Origin airport | Seattle - Tacoma Intl. | | --- | --- | | Destination airport | Tribhuvan Intl. | | Airlines serving | Cathay Pacific, Emirates, KLM, Malaysia Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines | | Return price | £790 | | Distance | 11146 km | ## Book with confidence ### Compare flights from Seattle to Kathmandu easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to Kathmandu. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Tribhuvan Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to Tribhuvan Intl..   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 Seattle - Tacoma Intl. (SEA) to Tribhuvan Intl. (KTM) The easiest way to view the best deals on flights from Seattle to Kathmandu 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 Seattle - Tacoma Intl. to Tribhuvan Intl. start at just £790 and range up to £1,054.   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near Seattle and Kathmandu - booking your flight during January, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your Seattle to Kathmandu flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to Tribhuvan Intl. 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.   ## Explore a world of travel with Expedia - Trending Routes - Trending Flights - Top Flights Destinations - Related Airlines - Cheap Flights from Other Airports - Expedia's Latest Trends ### Top Routes from Seattle - [Seattle to Bologna (SEA - BLQ)](https://expedia.co.uk/lp/flights/sea/blq/seattle-to-bologna) - [Seattle to Barcelona (SEA - BCN)](https://expedia.co.uk/lp/flights/sea/bcn/seattle-to-barcelona) - [Seattle to Florence (SEA - FLR)](https://expedia.co.uk/lp/flights/sea/flr/seattle-to-florence) - [Seattle to Dublin (SEA - DUB)](https://expedia.co.uk/lp/flights/sea/dub/seattle-to-dublin) - [Seattle to Nice (SEA - NCE)](https://expedia.co.uk/lp/flights/sea/nce/seattle-to-nice) - [Seattle to Tokyo (SEA - NRT)](https://expedia.co.uk/lp/flights/sea/nrt/seattle-to-tokyo) - [Seattle to London (SEA - LHR)](https://expedia.co.uk/lp/flights/sea/lhr/seattle-to-london) - [Seattle to Lisbon (SEA - LIS)](https://expedia.co.uk/lp/flights/sea/lis/seattle-to-lisbon) - [Seattle to Munich (SEA - MUC)](https://expedia.co.uk/lp/flights/sea/muc/seattle-to-munich) - [Seattle to San Francisco (SEA - SFO)](https://expedia.co.uk/lp/flights/sea/sfo/seattle-to-san-francisco) ### Top Routes to Kathmandu - [Zagreb to Kathmandu (ZAG - KTM)](https://expedia.co.uk/lp/flights/zag/ktm/zagreb-to-kathmandu) - [London to Kathmandu (LCY - KTM)](https://expedia.co.uk/lp/flights/lcy/ktm/london-to-kathmandu) - [Bangkok to Kathmandu (BKK - KTM)](https://expedia.co.uk/lp/flights/bkk/ktm/bangkok-to-kathmandu) - [Dhaka to Kathmandu (DAC - KTM)](https://expedia.co.uk/lp/flights/dac/ktm/dhaka-to-kathmandu) - [Delhi to Kathmandu (DEL - KTM)](https://expedia.co.uk/lp/flights/del/ktm/delhi-to-kathmandu) - [Bucharest to Kathmandu (OTP - KTM)](https://expedia.co.uk/lp/flights/otp/ktm/bucharest-to-kathmandu) - [Edinburgh to Kathmandu (EDI - KTM)](https://expedia.co.uk/lp/flights/edi/ktm/edinburgh-to-kathmandu) - [London to Kathmandu (STN - KTM)](https://expedia.co.uk/lp/flights/stn/ktm/london-to-kathmandu) - [Dubai to Kathmandu (DXB - KTM)](https://expedia.co.uk/lp/flights/dxb/ktm/dubai-to-kathmandu) - [Al-Fujairah to Kathmandu (FJR - KTM)](https://expedia.co.uk/lp/flights/fjr/ktm/al-fujairah-to-kathmandu) - [Birmingham to Kathmandu (BHX - KTM)](https://expedia.co.uk/lp/flights/bhx/ktm/birmingham-to-kathmandu) - [Abu Dhabi to Kathmandu (AUH - KTM)](https://expedia.co.uk/lp/flights/auh/ktm/abu-dhabi-to-kathmandu) ### Top Routes from Seattle - [Virgin Atlantic Seattle to London](https://expedia.co.uk/lp/flight-routes/virgin-atlantic-from-seattle-tacoma-intl-to-heathrow/vs/sea/lhr) ### Top Routes to Kathmandu - [Air India Delhi to Kathmandu](https://expedia.co.uk/lp/flight-routes/air-india-from-indira-gandhi-intl-to-tribhuvan-intl/ai/del/ktm) - [Emirates London to Kathmandu](https://expedia.co.uk/lp/flight-routes/emirates-from-stansted-to-tribhuvan-intl/ek/stn/ktm) - [Air India London to Kathmandu](https://expedia.co.uk/lp/flight-routes/air-india-from-heathrow-to-tribhuvan-intl/ai/lhr/ktm) ### Top Flight Destinations - 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[Alaska Airlines](https://expedia.co.uk/Alaska-Airlines-Flights.cAS.Travel-Guide-Airlines) - [WestJet](https://expedia.co.uk/WestJet-Flights.cWS.Travel-Guide-Airlines) - [JetBlue Airways](https://expedia.co.uk/JetBlue-Airways-Flights.cB6.Travel-Guide-Airlines) ### Nearby Airports - [Boeing Field Airport (BFI)](https://expedia.co.uk/lp/airports/bfi/flights-from-boeing-field-airport) - [Seattle Paine Field Intl. Airport Airport (PAE)](https://expedia.co.uk/lp/airports/pae/flights-from-seattle-paine-field-intl-airport-airport) - [William R. Fairchild Intl. Airport (CLM)](https://expedia.co.uk/lp/airports/clm/flights-from-william-r-fairchild-intl-airport) - [Lopez Island Airport (LPS)](https://expedia.co.uk/lp/airports/lps/flights-from-lopez-island-airport) - [Bowerman Airport (HQM)](https://expedia.co.uk/lp/airports/hqm/flights-from-bowerman-airport) - [Westsound Airport (WSX)](https://expedia.co.uk/lp/airports/wsx/flights-from-westsound-airport) - [Bellingham Intl. Airport (BLI)](https://expedia.co.uk/lp/airports/bli/flights-from-bellingham-intl-airport) - [Pangborn Memorial Airport (EAT)](https://expedia.co.uk/lp/airports/eat/flights-from-pangborn-memorial-airport) ### Expedia's Latest Trends Flights - [Flights from London to Boston](https://expedia.co.uk/lp/flights/lhr/bos/london-to-boston) - [Flights from London to Cincinnati](https://expedia.co.uk/lp/flights/lhr/cvg/london-to-cincinnati) - [Flights from London to Seattle](https://expedia.co.uk/lp/flights/lhr/sea/london-to-seattle) - [Flights from Boston to London](https://expedia.co.uk/lp/flights/bos/lhr/boston-to-london) - [Flights from Las Vegas to London](https://expedia.co.uk/lp/flights/las/lhr/las-vegas-to-london) - [Flights from London to Anchorage](https://expedia.co.uk/lp/flights/lhr/anc/london-to-anchorage) - [Flights from London to Philadelphia](https://expedia.co.uk/lp/flights/lhr/phl/london-to-philadelphia) - [Flights from London to Columbus](https://expedia.co.uk/lp/flights/lhr/cmh/london-to-columbus) - [Flights from Manchester to Boston](https://expedia.co.uk/lp/flights/man/bos/manchester-to-boston) - [Flights from Las Vegas to Los Angeles](https://expedia.co.uk/lp/flights/las/lax/las-vegas-to-los-angeles) - [Flights from London to Fort Lauderdale](https://expedia.co.uk/lp/flights/lhr/fll/london-to-fort-lauderdale) - [Flights from London to New York](https://expedia.co.uk/lp/flights/lon/nyc/london-to-new-york) - [Flights from Las Vegas to San Francisco](https://expedia.co.uk/lp/flights/las/sfo/las-vegas-to-san-francisco) - [Flights from London to Cleveland](https://expedia.co.uk/lp/flights/lhr/cle/london-to-cleveland) - [Flights from London to Pittsburgh](https://expedia.co.uk/lp/flights/lhr/pit/london-to-pittsburgh) - [Flights from Toronto to New York](https://expedia.co.uk/lp/flights/yyz/nyc/toronto-to-new-york) - [Flights from Edinburgh to Boston](https://expedia.co.uk/lp/flights/edi/bos/edinburgh-to-boston) - [Flights from Manchester to Las Vegas](https://expedia.co.uk/lp/flights/man/las/manchester-to-las-vegas) - [Flights from Los Angeles to Las Vegas](https://expedia.co.uk/lp/flights/lax/las/los-angeles-to-las-vegas) - [Flights from Dallas to London](https://expedia.co.uk/lp/flights/dfw/lhr/dallas-to-london) - [Flights from Manchester to Dallas](https://expedia.co.uk/lp/flights/man/dfw/manchester-to-dallas) - [Flights from San Francisco to Las Vegas](https://expedia.co.uk/lp/flights/sfo/las/san-francisco-to-las-vegas) - [Flights from New York to Las Vegas](https://expedia.co.uk/lp/flights/jfk/las/new-york-to-las-vegas) - [Flights from London to New York](https://expedia.co.uk/lp/flights/lhr/nyc/london-to-new-york) - [Flights from London to San Diego](https://expedia.co.uk/lp/flights/lhr/san/london-to-san-diego) - [Flights from Dublin to Las Vegas](https://expedia.co.uk/lp/flights/dub/las/dublin-to-las-vegas) - [Flights from Glasgow to Las Vegas](https://expedia.co.uk/lp/flights/gla/las/glasgow-to-las-vegas) - [Flights from London to Las Vegas](https://expedia.co.uk/lp/flights/lhr/las/london-to-las-vegas) - [Flights from Boston to New York](https://expedia.co.uk/lp/flights/bos/jfk/boston-to-new-york) - [Flights from London to Dallas](https://expedia.co.uk/lp/flights/lhr/dfw/london-to-dallas) \*Available to Expedia members. ![](https://a.travel-assets.com/mad-service/footer/bnaBanners/BEX_Footer.jpg) ## Go further with the Expedia app Save on select hotels when you book in the app. Our app deals help you to save on trips so you can travel more and manage it all on the go. Scan the QR code with your device camera and download our app ![QR code to download the app](data:image/png;base64,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)