S$698 Cheap Flights from Seattle to Kathmandu

View S$698 flight on Wed, 20 Aug, 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 to Kathmandu (SEA-KTM)

Prices were available within the past 7 days and start at S$698 for one-way flights and S$1,429 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Turkish Airlines
Sat, 23 Aug - Fri, 19 Sep
SEA
Seattle
KTM
Kathmandu
S$1,429 Return, found 15 hours ago
S$1,429
Return
found 15 hours ago
Select Turkish Airlines flight, departing Sat, 23 Aug from Seattle to Kathmandu, returning Fri, 19 Sep, priced at S$1,429 found 15 hours ago
Turkish Airlines
Sat, 23 Aug - Mon, 22 Sep
SEA
Seattle
KTM
Kathmandu
S$1,486 Return, found 15 hours ago
S$1,486
Return
found 15 hours ago
Select Turkish Airlines flight, departing Sat, 23 Aug from Seattle to Kathmandu, returning Mon, 22 Sep, priced at S$1,486 found 15 hours ago
Alaska Airlines
Wed, 20 Aug - Thu, 18 Sep
SEA
Seattle
KTM
Kathmandu
S$1,544 Return, found 2 days ago
S$1,544
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 20 Aug from Seattle to Kathmandu, returning Thu, 18 Sep, priced at S$1,544 found 2 days ago
Alaska Airlines
Wed, 20 Aug - Thu, 18 Sep
SEA
Seattle
KTM
Kathmandu
S$1,553 Return, found 2 days ago
S$1,553
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 20 Aug from Seattle to Kathmandu, returning Thu, 18 Sep, priced at S$1,553 found 2 days ago
Turkish Airlines
Wed, 20 Aug - Fri, 19 Sep
SEA
Seattle
KTM
Kathmandu
S$1,569 Return, found 15 hours ago
S$1,569
Return
found 15 hours ago
Select Turkish Airlines flight, departing Wed, 20 Aug from Seattle to Kathmandu, returning Fri, 19 Sep, priced at S$1,569 found 15 hours ago
Turkish Airlines
Thu, 21 Aug - Fri, 19 Sep
SEA
Seattle
KTM
Kathmandu
S$1,577 Return, found 15 hours ago
S$1,577
Return
found 15 hours ago
Select Turkish Airlines flight, departing Thu, 21 Aug from Seattle to Kathmandu, returning Fri, 19 Sep, priced at S$1,577 found 15 hours ago
Air Canada
Wed, 20 Aug - Thu, 18 Sep
SEA
Seattle
KTM
Kathmandu
S$1,619 Return, found 2 days ago
S$1,619
Return
found 2 days ago
Select Air Canada flight, departing Wed, 20 Aug from Seattle to Kathmandu, returning Thu, 18 Sep, priced at S$1,619 found 2 days ago
Turkish Airlines
Fri, 22 Aug - Fri, 19 Sep
SEA
Seattle
KTM
Kathmandu
S$1,621 Return, found 15 hours ago
S$1,621
Return
found 15 hours ago
Select Turkish Airlines flight, departing Fri, 22 Aug from Seattle to Kathmandu, returning Fri, 19 Sep, priced at S$1,621 found 15 hours ago
Cathay Pacific
Wed, 20 Aug - Thu, 18 Sep
SEA
Seattle
KTM
Kathmandu
S$1,643 Return, found 2 days ago
S$1,643
Return
found 2 days ago
Select Cathay Pacific flight, departing Wed, 20 Aug from Seattle to Kathmandu, returning Thu, 18 Sep, priced at S$1,643 found 2 days ago
Singapore Airlines
Wed, 20 Aug - Thu, 18 Sep
SEA
Seattle
KTM
Kathmandu
S$2,317 Return, found 2 days ago
S$2,317
Return
found 2 days ago
Select Singapore Airlines flight, departing Wed, 20 Aug from Seattle to Kathmandu, returning Thu, 18 Sep, priced at S$2,317 found 2 days ago

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

September is typically the cheapest month to fly

From S$1,310 - S$2,199 per traveller.

Graph displaying average flight prices per month

Seattle to Kathmandu route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Tribhuvan Intl.
Return price
S$1,428
Distance
11146 km

Perfect flights from Seattle to Kathmandu

Your Journey from Seattle to Kathmandu

Start your unforgettable journey with Expedia. Our broad selection of flights from Seattle to Kathmandu caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Alaska Airlines, Air Canada, Cathay Pacific, Turkish Airlines, Delta, Singapore Airlines. Our selection of flights from Seattle - Tacoma Intl. to Tribhuvan Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Seattle to Kathmandu Flights

Experience the joy of finding cheap flights from Seattle - Tacoma Intl. to Tribhuvan Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$698 and roundtrip prices from S$1,429*.
 

Pre-Flight Essentials

Ensure a smooth journey from Seattle to Kathmandu with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Kathmandu

Picture yourself stepping off the plane in Kathmandu and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Seattle to Kathmandu Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Seattle to Kathmandu.
 

Beyond the Flight – Exploring Kathmandu

With Expedia, your adventure extends beyond the flight. Explore Kathmandu at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Seattle to Kathmandu with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Seattle to Kathmandu with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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 S$1,429. 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.

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Seattle Airports

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