Cheap Flights from Seattle (SEA) to Kathmandu (KTM) from HK$3,039~

View HK$3,039 flight on Tue, 3 Feb 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Tribhuvan Intl. Airport (KTM)

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Find Cheap Flights from Seattle (SEA) to Kathmandu (KTM)

Prices were available within the past 7 days and start at HK$3,039 for one-way flights and HK$7,368 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Tue, 3 Mar - Wed, 25 Mar
SEA
Seattle
KTM
Kathmandu
HK$7,368 Return, found 1 day ago
HK$7,368
Return
found 1 day ago
Select Singapore Airlines flight, departing Tue, 3 Mar from Seattle to Kathmandu, returning Wed, 25 Mar, priced at HK$7,368 found 1 day ago
Turkish Airlines
Mon, 8 Dec - Tue, 23 Dec
SEA
Seattle
KTM
Kathmandu
HK$7,986 Return, found 1 day ago
HK$7,986
Return
found 1 day ago
Select Turkish Airlines flight, departing Mon, 8 Dec from Seattle to Kathmandu, returning Tue, 23 Dec, priced at HK$7,986 found 1 day ago
Singapore Airlines
Tue, 3 Mar - Wed, 25 Mar
SEA
Seattle
KTM
Kathmandu
HK$8,035 Return, found 1 day ago
HK$8,035
Return
found 1 day ago
Select Singapore Airlines flight, departing Tue, 3 Mar from Seattle to Kathmandu, returning Wed, 25 Mar, priced at HK$8,035 found 1 day ago
Turkish Airlines
Tue, 3 Mar - Wed, 25 Mar
SEA
Seattle
KTM
Kathmandu
HK$8,426 Return, found 1 day ago
HK$8,426
Return
found 1 day ago
Select Turkish Airlines flight, departing Tue, 3 Mar from Seattle to Kathmandu, returning Wed, 25 Mar, priced at HK$8,426 found 1 day ago
Singapore Airlines
Tue, 24 Mar - Thu, 2 Apr
SEA
Seattle
KTM
Kathmandu
HK$8,472 Return, found 8 hours ago
HK$8,472
Return
found 8 hours ago
Select Singapore Airlines flight, departing Tue, 24 Mar from Seattle to Kathmandu, returning Thu, 2 Apr, priced at HK$8,472 found 8 hours ago
Turkish Airlines
Tue, 24 Mar - Thu, 2 Apr
SEA
Seattle
KTM
Kathmandu
HK$8,509 Return, found 8 hours ago
HK$8,509
Return
found 8 hours ago
Select Turkish Airlines flight, departing Tue, 24 Mar from Seattle to Kathmandu, returning Thu, 2 Apr, priced at HK$8,509 found 8 hours ago
Alaska Airlines
Tue, 3 Mar - Wed, 25 Mar
SEA
Seattle
KTM
Kathmandu
HK$8,660 Return, found 1 day ago
HK$8,660
Return
found 1 day ago
Select Alaska Airlines flight, departing Tue, 3 Mar from Seattle to Kathmandu, returning Wed, 25 Mar, priced at HK$8,660 found 1 day ago
Singapore Airlines
Tue, 24 Mar - Thu, 2 Apr
SEA
Seattle
KTM
Kathmandu
HK$8,749 Return, found 8 hours ago
HK$8,749
Return
found 8 hours ago
Select Singapore Airlines flight, departing Tue, 24 Mar from Seattle to Kathmandu, returning Thu, 2 Apr, priced at HK$8,749 found 8 hours ago
EVA Airways
Tue, 24 Mar - Thu, 2 Apr
SEA
Seattle
KTM
Kathmandu
HK$11,446 Return, found 8 hours ago
HK$11,446
Return
found 8 hours ago
Select EVA Airways flight, departing Tue, 24 Mar from Seattle to Kathmandu, returning Thu, 2 Apr, priced at HK$11,446 found 8 hours ago
Qatar Airways
Tue, 24 Mar - Thu, 2 Apr
SEA
Seattle
KTM
Kathmandu
HK$12,334 Return, found 8 hours ago
HK$12,334
Return
found 8 hours ago
Select Qatar Airways flight, departing Tue, 24 Mar from Seattle to Kathmandu, returning Thu, 2 Apr, priced at HK$12,334 found 8 hours ago

Find the cheapest month to fly from Seattle (SEA) to Kathmandu (KTM)

September is typically the cheapest month to fly

From HK$7,914 - HK$14,060 per traveller.
Seattle to Kathmandu route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Tribhuvan Intl.
Airlines serving
Cathay Pacific, Emirates, Qatar Airways, Singapore Airlines, SriLankan Airlines, Turkish Airlines
Return price
HK$7,368
Distance
11146 km

Flights from Seattle to Kathmandu

Book cheap flights from Seattle (SEA) to Kathmandu (KTM) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Seattle (SEA) to Kathmandu (KTM) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Seattle (SEA) to Kathmandu (KTM) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Kathmandu flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Kathmandu and things to do in Kathmandu for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Kathmandu more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Kathmandu is HK$3,039 now!

 

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 HK$7,368. 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 canceled 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.
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 kilometers 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.

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