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Kathmandu

$468+ Cheap flights from Washington to Kathmandu (KTM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KTM
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Washington to Kathmandu

Cheapest flights from Washington to Kathmandu
Explore the most affordable flight options available from Washington to Kathmandu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This oojo deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:59 pmSEA - KTM
2 stops37h 46mCathay Pacific
Tue 12/2310:55 pmKTM - SEA
2 stops57h 40mCathay Pacific
Deal found 12/16$2,192
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/164:05 pmSEA - KTM
1 stop27h 50mMultiple Airlines
Tue 12/231:30 pmKTM - SEA
2 stops42h 55mMultiple Airlines
Deal found 12/16$2,203
This Travelocity deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:09 amSEA - KTM
3 stops33h 41mMultiple Airlines
Thu 1/17:35 amKTM - SEA
2 stops26h 51mMultiple Airlines
Deal found 12/15$2,312
This Expedia deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:09 amSEA - KTM
3 stops43h 36mMultiple Airlines
Thu 12/256:30 amKTM - SEA
2 stops24h 20mMultiple Airlines
Deal found 12/17$2,318
This FlightHub deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 pmSEA - KTM
1 stop26h 25mTurkish Airlines
Tue 12/2312:35 pmKTM - SEA
1 stop42h 15mTurkish Airlines
Deal found 12/16$2,333
This Ovago deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/187:09 amSEA - KTM
2 stops48h 36mCathay Pacific
Thu 12/2510:55 pmKTM - SEA
2 stops29h 17mCathay Pacific
Deal found 12/17$2,405
This Expedia deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:09 amSEA - KTM
3 stops43h 36mMultiple Airlines
Thu 1/17:35 amKTM - SEA
2 stops26h 51mMultiple Airlines
Deal found 12/17$2,495

Find flight deals from Washington to Kathmandu

Keep the following information in mind while searching for Washington to Kathmandu flight deals. Data was last updated December 18, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$807
(Justfly.com)

One-way from

$468
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,490
Provider with most accurate pricing for Seattle/Tacoma Intl-Kathmandu Tribhuvan flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Kathmandu Tribhuvan flights.
Search Deals
From Washington to Kathmandu Tribhuvan
Search Deals
One-way flight from Washington to Kathmandu Tribhuvan
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Kathmandu that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Washington to Kathmandu that are best for you.

Fly from

Washington

Fly to

Kathmandu

Route

Depart

Return

Price

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 4/7

11:50 am-9:45 pm

1 stop21h 10m

Kathmandu Tribhuvan

Tue 4/21

11:00 pm-10:10 am

1 stop23h 55m

$1,034

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 4/7

11:50 am-9:45 pm

1 stop21h 10m

Kathmandu Tribhuvan

Wed 5/13

11:00 pm-10:10 am

1 stop23h 55m

$1,034

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 4/2

11:50 am-9:45 pm

1 stop21h 10m

Kathmandu Tribhuvan

Wed 5/13

11:00 pm-10:10 am

1 stop23h 55m

$1,034

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 4/7

11:50 am-9:45 pm

1 stop21h 10m

Kathmandu Tribhuvan

Sun 5/17

11:00 pm-10:10 am

1 stop23h 55m

$1,034

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 4/13

11:50 am-9:45 pm

1 stop21h 10m

Kathmandu Tribhuvan

Mon 4/20

11:00 pm-10:10 am

1 stop23h 55m

$1,034

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 4/7

11:50 am-9:45 pm

1 stop21h 10m

Kathmandu Tribhuvan

Tue 5/19

11:00 pm-10:10 am

1 stop23h 55m

$1,034

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 1/22

3:45 pm-9:30 pm

2 stops40h 00m

Kathmandu Tribhuvan

Sun 2/8

10:55 pm-8:52 pm

2 stops35h 42m

$1,049

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 3/12

5:50 pm-9:30 pm

2 stops38h 55m

Kathmandu Tribhuvan

Sun 3/22

10:55 pm-4:36 pm

2 stops30h 26m

$1,049

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 2/16

1:32 pm-9:30 pm

2 stops42h 13m

Kathmandu Tribhuvan

Tue 3/10

10:55 pm-7:58 pm

2 stops33h 48m

$1,049

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 3/5

1:32 pm-9:30 pm

2 stops42h 13m

Kathmandu Tribhuvan

Sun 3/22

10:55 pm-7:54 pm

2 stops33h 44m

$1,049

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 48 results
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Best time to book a flight from Washington to Kathmandu

Have a flexible travel schedule? Discover the best time to fly to Kathmandu from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Kathmandu

What is the cheapest month to book a flight from State of Washington to Kathmandu?

Currently, August is the cheapest month in which you can book a flight from State of Washington to Kathmandu (average of $869). Flying from State of Washington to Kathmandu in June is currently the most expensive (average of $1,191). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to KTM?

Find hourly flight availability from Washington to Kathmandu. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

One of the essential ways to save on airfare from State of Washington to Kathmandu is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 24% on airfare.

Related info for your journey

Find useful and relevant information for your journey from Washington to Kathmandu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Kathmandu from Washington?

    Located just 2.5 mi from the city center, Kathmandu Tribhuvan (KTM) is the airport most travelers will use when flying to Kathmandu from Washington.

  • How long is the flight from State of Washington to Kathmandu?

    Cathay Pacific and Qatar Airways can get you from State of Washington to Kathmandu in just under 21h 10m. Your travel time can differ by up to 17h 05m. The distance from State of Washington to Kathmandu is about 6962 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from State of Washington to Kathmandu one-way?

    For one-way options, check prices for Singapore Airlines. According to our data, you can fly for as low as $307. Users have also found prices from $667 and $734 on Qatar Airways and Turkish Airlines, respectively.

  • What are the most popular routes from State of Washington to Kathmandu?

    The most popular flight routes from State of Washington to Kathmandu are Seattle/Tacoma Intl - Kathmandu Tribhuvan, Portland - Kathmandu Tribhuvan and Spokane - Kathmandu Tribhuvan.

  • Can I find deals for flights from Washington to Kathmandu that include hotel bookings?

    Yes. In addition to deals on Washington to Kathmandu flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Kathmandu?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Kathmandu.

  • Can I find deals for business class flights from Washington to Kathmandu?

    Yes. Cheapflights offers flight deals from Washington to Kathmandu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Kathmandu?

    Currently, August is the cheapest month in which you can book a flight from State of Washington to Kathmandu (average of $869). Flying from State of Washington to Kathmandu in June is currently the most expensive (average of $1,191). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Kathmandu?

Book flights to Kathmandu if you plan to visit one of these locations
Nagarkot

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Alternative routes for Washington to Kathmandu

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Top 5 airlines flying from Washington to Kathmandu

Discover the top 5 airlines that operate flights from Washington to Kathmandu. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$898Average$1,413FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$984Average$1,609FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$1,015Average$1,359FlexibilityNo cancel feeOn-time77%
Cathay PacificCheapest$1,034Average$1,276FlexibilityNo cancel feeOn-time72%
EmiratesCheapest$1,138Average$1,341FlexibilityNo cancel feeOn-time75%

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