Cheap Flights from Seattle (SEA) to Kathmandu (KTM) from HK$4,227~

View HK$4,227 flight on Sun, 29 Mar 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$4,227 for one-way flights and HK$8,690 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Wed, 1 Apr - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$8,690 Return, found 5 days ago
HK$8,690
Return
found 5 days ago
Select Cathay Pacific flight, departing Wed, 1 Apr from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$8,690 found 5 days ago
Cathay Pacific
Wed, 1 Apr - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$8,961 Return, found 5 days ago
HK$8,961
Return
found 5 days ago
Select Cathay Pacific flight, departing Wed, 1 Apr from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$8,961 found 5 days ago
Alaska Airlines
Sat, 28 Mar - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$9,080 Return, found 4 days ago
HK$9,080
Return
found 4 days ago
Select Alaska Airlines flight, departing Sat, 28 Mar from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$9,080 found 4 days ago
Alaska Airlines
Sun, 29 Mar - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$9,270 Return, found 4 days ago
HK$9,270
Return
found 4 days ago
Select Alaska Airlines flight, departing Sun, 29 Mar from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$9,270 found 4 days ago
Cathay Pacific
Sun, 29 Mar - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$9,281 Return, found 4 days ago
HK$9,281
Return
found 4 days ago
Select Cathay Pacific flight, departing Sun, 29 Mar from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$9,281 found 4 days ago
Cathay Pacific
Sat, 28 Mar - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$9,325 Return, found 4 days ago
HK$9,325
Return
found 4 days ago
Select Cathay Pacific flight, departing Sat, 28 Mar from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$9,325 found 4 days ago
Alaska Airlines
Sat, 28 Mar - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$9,351 Return, found 4 days ago
HK$9,351
Return
found 4 days ago
Select Alaska Airlines flight, departing Sat, 28 Mar from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$9,351 found 4 days ago
Singapore Airlines
Sat, 28 Mar - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$10,524 Return, found 4 days ago
HK$10,524
Return
found 4 days ago
Select Singapore Airlines flight, departing Sat, 28 Mar from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$10,524 found 4 days ago
Qatar Airways
Sun, 29 Mar - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$11,200 Return, found 4 days ago
HK$11,200
Return
found 4 days ago
Select Qatar Airways flight, departing Sun, 29 Mar from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$11,200 found 4 days ago
Turkish Airlines
Sun, 29 Mar - Tue, 7 Apr
SEA
Seattle
KTM
Kathmandu
HK$11,706 Return, found 4 days ago
HK$11,706
Return
found 4 days ago
Select Turkish Airlines flight, departing Sun, 29 Mar from Seattle to Kathmandu, returning Tue, 7 Apr, priced at HK$11,706 found 4 days ago

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

April is typically the cheapest month to fly

From HK$7,113 - HK$15,002 per traveller.
Seattle to Kathmandu route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Tribhuvan Intl.
Return price
HK$8,690
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$4,227 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$8,690. 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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