฿28,660 Cheap Flights from Seattle (SEA) to Kathmandu (KTM)

View ฿28,660 flight on Sat, 4 Oct 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at ฿28,660 for one-way flights and ฿34,960 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Turkish Airlines
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿34,960 Return, found 3 days ago
฿34,960
Return
found 3 days ago
Select Turkish Airlines flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿34,960 found 3 days ago
Alaska Airlines
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿44,150 Return, found 3 days ago
฿44,150
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿44,150 found 3 days ago
Cathay Pacific
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿44,785 Return, found 3 days ago
฿44,785
Return
found 3 days ago
Select Cathay Pacific flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿44,785 found 3 days ago
Alaska Airlines
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿47,285 Return, found 3 days ago
฿47,285
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿47,285 found 3 days ago
Cathay Pacific
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿47,920 Return, found 3 days ago
฿47,920
Return
found 3 days ago
Select Cathay Pacific flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿47,920 found 3 days ago
Air Canada
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿54,295 Return, found 3 days ago
฿54,295
Return
found 3 days ago
Select Air Canada flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿54,295 found 3 days ago
Cathay Pacific
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿54,930 Return, found 3 days ago
฿54,930
Return
found 3 days ago
Select Cathay Pacific flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿54,930 found 3 days ago
Alaska Airlines
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿57,425 Return, found 3 days ago
฿57,425
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿57,425 found 3 days ago
Alaska Airlines
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿57,845 Return, found 3 days ago
฿57,845
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿57,845 found 3 days ago
Singapore Airlines
Thu, 27 Nov - Tue, 9 Dec
SEA
Seattle
KTM
Kathmandu
฿60,525 Return, found 3 days ago
฿60,525
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 27 Nov from Seattle to Kathmandu, returning Tue, 9 Dec, priced at ฿60,525 found 3 days ago

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

September is typically the cheapest month to fly

From ฿33,138 - ฿57,933 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Kathmandu route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Tribhuvan Intl.
Return price
฿34,960
Distance
11146 km

Perfect flights from Seattle to Kathmandu

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Kathmandu. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to Tribhuvan Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿28,660 and roundtrip prices from ฿34,960. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Tribhuvan Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Kathmandu.

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 ฿34,960. 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.
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.

Explore a world of travel with Expedia

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