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

View AU$2,239 flight on Thu, 20 Aug 2026Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,045 Return, found 3 days ago
AU$2,045
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,045 found 3 days ago
Singapore Airlines
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,167 Return, found 3 days ago
AU$2,167
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,167 found 3 days ago
Singapore Airlines
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,210 Return, found 3 days ago
AU$2,210
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,210 found 3 days ago
Singapore Airlines
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,237 Return, found 3 days ago
AU$2,237
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,237 found 3 days ago
Singapore Airlines
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,306 Return, found 3 days ago
AU$2,306
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,306 found 3 days ago
Singapore Airlines
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,359 Return, found 3 days ago
AU$2,359
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,359 found 3 days ago
Singapore Airlines
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,402 Return, found 3 days ago
AU$2,402
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,402 found 3 days ago
Singapore Airlines
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,427 Return, found 3 days ago
AU$2,427
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,427 found 3 days ago
Singapore Airlines
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,470 Return, found 3 days ago
AU$2,470
Return
found 3 days ago
Select Singapore Airlines flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,470 found 3 days ago
Emirates
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,482 Return, found 3 days ago
AU$2,482
Return
found 3 days ago
Select Emirates flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,482 found 3 days ago
Air India
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,516 Return, found 3 days ago
AU$2,516
Return
found 3 days ago
Select Air India flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,516 found 3 days ago
Cathay Pacific
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,631 Return, found 3 days ago
AU$2,631
Return
found 3 days ago
Select Cathay Pacific flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,631 found 3 days ago
Cathay Pacific
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,641 Return, found 3 days ago
AU$2,641
Return
found 3 days ago
Select Cathay Pacific flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,641 found 3 days ago
Qatar Airways
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,665 Return, found 3 days ago
AU$2,665
Return
found 3 days ago
Select Qatar Airways flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,665 found 3 days ago
Qatar Airways
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,680 Return, found 3 days ago
AU$2,680
Return
found 3 days ago
Select Qatar Airways flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,680 found 3 days ago
Qatar Airways
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,716 Return, found 3 days ago
AU$2,716
Return
found 3 days ago
Select Qatar Airways flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,716 found 3 days ago
Cathay Pacific
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,801 Return, found 3 days ago
AU$2,801
Return
found 3 days ago
Select Cathay Pacific flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,801 found 3 days ago
Cathay Pacific
Thu, 20 Aug - Thu, 3 Sept
KTM
Kathmandu
SEA
Seattle
AU$2,811 Return, found 3 days ago
AU$2,811
Return
found 3 days ago
Select Cathay Pacific flight, departing Thu, 20 Aug from Kathmandu to Seattle, returning Thu, 3 Sept, priced at AU$2,811 found 3 days ago

Frequently asked questions

How do I find cheap flights from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 15 connecting flights per day from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Some common connection points include Indira Gandhi Intl. (DEL), Hong Kong Intl. (HKG), and Hamad Intl. (DOH).
What is the earliest flight from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs at approximately 12:20 AM local time, operated by FZ / EK. This is a seasonal service active in September and October. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Monday, with around 16 flights available. This gives you a good selection of options for your journey. Major airlines on this route include FZ, AI, and QR. Flight schedules are fairly consistent throughout the week, with only a slight variation between the busiest and least busy days.
What are the most popular departure times for flights from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the late evening, from 9pm to midnight. Around 52% of passengers reckon this time's best. Heaps of major carriers, including Cathay Pacific, Singapore Airlines and Alaska Airlines, offer flights during this window. This timing works well because it allows you to make the most of your day before your flight and arrive at your destination refreshed.
How long does it take to fly from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flights from KTM to SEA with one stop typically take around 22 hours 20 minutes, covering approximately 6,967 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for KTM to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from Tribhuvan Intl. (KTM)?
If you're planning to travel to Seattle from Tribhuvan Intl. (KTM), you can fly directly into Seattle - Tacoma Intl. (SEA) Some flights may connect through major hubs like Indira Gandhi Intl. (DEL), Hong Kong Intl. (HKG), Hamad Intl. (DOH) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Kathmandu (KTM-Tribhuvan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Tribhuvan Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
AU$2,045
Distance
11146 km

Book with confidence

Your quick guide to flights from Kathmandu to Seattle

Pick up great flights from Kathmandu to Seattle

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Kathmandu to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Kathmandu to Seattle that take around hours.

Find cheap flights from Kathmandu to Seattle

From the great flight deals with prices currently ranging from AU$2,045 to AU$2,811, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Kathmandu to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in August.

Reasons to book your flight from Kathmandu to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Kathmandu to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Kathmandu to Seattle

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