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CA $674 Cheap Flights from Seattle (SEA) to Kathmandu (KTM)

View CA $674 flight on Thu, Sep 10, 2026Opens 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 CA $674 for one-way flights and CA $1,550 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Fri, May 7 - Mon, May 17
SEA
Seattle
KTM
Kathmandu
CA $1,550 Roundtrip, found 4 days ago
CA $1,550
Roundtrip
found 4 days ago
Select Singapore Airlines flight, departing Fri, May 7 from Seattle to Kathmandu, returning Mon, May 17, priced at CA $1,550 found 4 days ago
Singapore Airlines
Sat, Feb 6 - Fri, Mar 5
SEA
Seattle
KTM
Kathmandu
CA $1,573 Roundtrip, found 7 hours ago
CA $1,573
Roundtrip
found 7 hours ago
Select Singapore Airlines flight, departing Sat, Feb 6 from Seattle to Kathmandu, returning Fri, Mar 5, priced at CA $1,573 found 7 hours ago
Singapore Airlines
Fri, May 7 - Mon, May 17
SEA
Seattle
KTM
Kathmandu
CA $1,618 Roundtrip, found 4 days ago
CA $1,618
Roundtrip
found 4 days ago
Select Singapore Airlines flight, departing Fri, May 7 from Seattle to Kathmandu, returning Mon, May 17, priced at CA $1,618 found 4 days ago
Qatar Airways
Tue, Sep 1 - Tue, Sep 22
SEA
Seattle
KTM
Kathmandu
CA $1,622 Roundtrip, found 1 day ago
CA $1,622
Roundtrip
found 1 day ago
Select Qatar Airways flight, departing Tue, Sep 1 from Seattle to Kathmandu, returning Tue, Sep 22, priced at CA $1,622 found 1 day ago
Qatar Airways
Mon, Aug 24 - Tue, Sep 8
SEA
Seattle
KTM
Kathmandu
CA $1,626 Roundtrip, found 6 days ago
CA $1,626
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Mon, Aug 24 from Seattle to Kathmandu, returning Tue, Sep 8, priced at CA $1,626 found 6 days ago
Qatar Airways
Mon, Sep 21 - Mon, Oct 26
SEA
Seattle
KTM
Kathmandu
CA $1,626 Roundtrip, found 11 hours ago
CA $1,626
Roundtrip
found 11 hours ago
Select Qatar Airways flight, departing Mon, Sep 21 from Seattle to Kathmandu, returning Mon, Oct 26, priced at CA $1,626 found 11 hours ago
Qatar Airways
Mon, Aug 24 - Tue, Sep 8
SEA
Seattle
KTM
Kathmandu
CA $1,630 Roundtrip, found 6 days ago
CA $1,630
Roundtrip
found 6 days ago
Select Qatar Airways flight, departing Mon, Aug 24 from Seattle to Kathmandu, returning Tue, Sep 8, priced at CA $1,630 found 6 days ago
Turkish Airlines
Sun, Aug 23 - Fri, Sep 11
SEA
Seattle
KTM
Kathmandu
CA $1,732 Roundtrip, found 5 days ago
CA $1,732
Roundtrip
found 5 days ago
Select Turkish Airlines flight, departing Sun, Aug 23 from Seattle to Kathmandu, returning Fri, Sep 11, priced at CA $1,732 found 5 days ago
Cathay Pacific
Mon, Sep 21 - Mon, Oct 26
SEA
Seattle
KTM
Kathmandu
CA $2,109 Roundtrip, found 11 hours ago
CA $2,109
Roundtrip
found 11 hours ago
Select Cathay Pacific flight, departing Mon, Sep 21 from Seattle to Kathmandu, returning Mon, Oct 26, priced at CA $2,109 found 11 hours ago
Korean Air
Thu, Oct 29 - Sat, Nov 14
SEA
Seattle
KTM
Kathmandu
CA $2,672 Roundtrip, found 1 day ago
CA $2,672
Roundtrip
found 1 day ago
Select Korean Air flight, departing Thu, Oct 29 from Seattle to Kathmandu, returning Sat, Nov 14, priced at CA $2,672 found 1 day ago

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

February is typically the cheapest month to fly

From CA $1,469 - CA $1,756 per traveller.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.) cost?
You can find cheap one-way flights from CA $674 and cheap return flights from CA $1,550 SEA to KTM with Expedia. One-way flights typically cost between CA$1421 and CA$6121. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when SEA to KTM ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
The cheapest months to fly from SEA to KTM are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA) to Kathmandu (KTM)?
Enter SEA to KTM and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
Skywest Air is one of the cheapest airlines offering connecting return flights from Seattle - Tacoma Intl. (SEA) to Tribhuvan Intl. (KTM), with prices starting from around CA$1743 for flights that can be booked for departure within the next year. These prices are per adult for economy/coach class and include a layover in Los Angeles Intl. (LAX). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
There are approximately 66 connecting flights per day from Seattle - Tacoma Intl. (SEA) to Tribhuvan Intl. (KTM). Some common connection points include San Francisco Intl. (SFO), Los Angeles Intl. (LAX), and Heathrow (LHR).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Tribhuvan Intl. (KTM) typically departs around 12:05 AM. This flight is operated by Alaska Airlines and Air India. This is a seasonal service, active in May and June. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to Tribhuvan Intl. (KTM) on a Thursday, with around 66 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Alaska Airlines, Qatar Airways, and United. Flight schedules are fairly consistent throughout the week, so you'll have plenty of options regardless of the day you choose to fly.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Tribhuvan Intl. (KTM) are in the afternoon, from 3pm to 6pm. Many major carriers, including Emirates, Qatar Airways and United, offer flights during this window. Many travellers prefer this time as it allows for a full day of activities before heading to the airport, and you'll arrive at your destination refreshed.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
There are no nonstop flights from Seattle - Tacoma Intl. (SEA) to Kathmandu (KTM-Tribhuvan Intl.). The distance between these two airports is approximately 11,212 kilometres. Flights with one stop typically take around 22 hours and 30 minutes. If you opt for flights with two or more stops, your travel time will be longer, usually around 24 hours and 30 minutes. Keep in mind that actual flight times can vary due to factors like layover duration, routing, and wind patterns.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
You can fly business class between SEA and KTM. Airlines that offer business class service on this route include:
  • Alaska Airlines
  • Singapore Airlines
  • Korean Air
  • American Airlines
  • Hawaiian Airlines
  • Delta
  • United
  • British Airways
  • Turkish Airlines
  • Cathay Pacific
  • Qatar Airways
  • Japan Airlines
  • Emirates
  • Skywest Air
  • China Airlines
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan 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 Kathmandu (KTM) from Seattle, WA (SEA)?
If you're planning to travel to Kathmandu from Seattle - Tacoma Intl. (SEA), you can fly directly into Tribhuvan Intl. (KTM). Some flights may connect through major hubs like San Francisco Intl. (SFO), Heathrow (LHR), or Los Angeles Intl. (LAX) before reaching Kathmandu. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Kathmandu (KTM-Tribhuvan 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
Seattle - Tacoma Intl.
Destination airport
Tribhuvan Intl.
Airlines serving
Cathay Pacific, Emirates, KLM, Malaysia Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines
Roundtrip price
CA $1,549
Distance
11146 km

Book with confidence

Seattle to Kathmandu Flights

The easy way to book your flights from Seattle to Kathmandu 

With Expedia, it’s simple to find and book flights to Kathmandu from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Tribhuvan Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Kathmandu today, tomorrow, or this week.  

 

Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Tribhuvan Intl., KTM 

Sort your search results by price to find great deals on your flight from Seattle to Kathmandu—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Kathmandu from Seattle currently is just CA $1,550 rising to CA $2,672.  

Here are more money-saving tips: 

  • Fly in May when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Kathmandu  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Kathmandu from Seattle 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Kathmandu with Expedia today.

Seattle to Kathmandu Flights

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*Available to Expedia members.