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Kathmandu

$364+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KTM
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Find 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 November 3, 2025.

This oojo deal was found by Cheapflights users on 10/31. 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.
Thu 11/2710:53 amSEA - KTM
2 stops58h 32mTurkish Airlines
Thu 12/412:35 pmKTM - SEA
2 stops41h 17mTurkish Airlines
Deal found 10/31$867
This oojo deal was found by Cheapflights users on 11/1. 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.
Mon 12/17:00 pmSEA - KTM
1 stop26h 25mTurkish Airlines
Mon 12/812:35 pmKTM - SEA
2 stops41h 17mTurkish Airlines
Deal found 11/1$946
This oojo deal was found by Cheapflights users on 11/2. 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.
Wed 12/310:40 amSEA - KTM
2 stops58h 45mTurkish Airlines
Thu 12/1812:35 pmKTM - SEA
1 stop42h 15mTurkish Airlines
Deal found 11/2$957
This oojo deal was found by Cheapflights users on 11/2. 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.
Sat 11/297:00 pmSEA - KTM
1 stop26h 25mTurkish Airlines
Sat 12/612:35 pmKTM - SEA
2 stops65h 17mTurkish Airlines
Deal found 11/2$1,005
This Justfly.com deal was found by Cheapflights users on 11/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:45 amSEA - KTM
1 stop23h 30mSingapore Airlines
Wed 12/1711:00 pmKTM - SEA
1 stop21h 55mSingapore Airlines
Deal found 11/1$1,084
This Trip.com deal was found by Cheapflights users on 11/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/22:00 pmSEA - KTM
2 stops36h 45mMultiple Airlines
Wed 12/171:45 pmKTM - SEA
2 stops36h 10mMultiple Airlines
Deal found 11/1$1,086
This Mytrip deal was found by Cheapflights users on 11/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3012:10 amSEA - KTM
2 stops26h 05mMultiple Airlines
Mon 12/812:20 pmKTM - SEA
2 stops34h 56mMultiple Airlines
Deal found 11/1$1,153
This oojo deal was found by Cheapflights users on 11/1. 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.
Wed 11/512:35 pmSEA - KTM
2 stops56h 50mTurkish Airlines
Wed 1/1412:35 pmKTM - SEA
2 stops41h 11mTurkish Airlines
Deal found 11/1$1,261
This FlightHub deal was found by Cheapflights users on 11/1. 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.
Mon 11/109:30 pmPDX - KTM
2 stops46h 30mQatar Airways
Mon 11/1711:00 amKTM - PDX
2 stops47h 35mQatar Airways
Deal found 11/1$1,267
This FlightHub deal was found by Cheapflights users on 11/2. 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 12/21:34 pmPDX - KTM
2 stops30h 26mQatar Airways
Fri 12/195:40 pmKTM - PDX
2 stops43h 04mQatar Airways
Deal found 11/2$1,467
This Expedia deal was found by Cheapflights users on 11/1. 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 11/62:01 pmGEG - KTM
2 stops41h 44mMultiple Airlines
Tue 11/1110:55 pmKTM - GEG
2 stops37h 13mMultiple Airlines
Deal found 11/1$1,472
This FlightHub deal was found by Cheapflights users on 11/1. 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.
Thu 11/68:45 amGEG - KTM
2 stops35h 15mQatar Airways
Tue 11/119:10 amKTM - GEG
2 stops50h 58mQatar Airways
Deal found 11/1$1,501

Cheap flight deals from Washington to Kathmandu

Keep the following information in mind while searching for Washington to Kathmandu flight deals. Data was last updated November 3, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$867
(oojo)

One-way from

$364
(oojo)

Popular in

June

Cheapest in

April

Average price

$1,411
Provider with most accurate pricing for Seattle/Tacoma Intl-Kathmandu Tribhuvan flight deals.
Search Deals
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 ($87 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 3, 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

Sun 1/11

8:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

Fri 1/30

11:00 pm-7:10 am

1 stop21h 55m

$968

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 1/1

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

Sat 1/24

12:35 pm-4:01 pm

2 stops41h 11m

$976

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 3/16

8:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

Mon 4/6

7:30 am-5:15 pm

1 stop22h 30m

$979

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 1/1

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

Sun 2/1

12:35 pm-5:05 pm

1 stop42h 15m

$998

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Fri 3/27

9:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

Sun 4/12

11:00 pm-8:45 am

1 stop46h 30m

$1,058

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 4/4

10:15 am-9:45 pm

1 stop22h 45m

Kathmandu Tribhuvan

Sun 4/12

11:00 pm-2:51 pm

2 stops28h 36m

$1,104

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sun 3/1

10:35 am-9:50 pm

2 stops45h 30m

Kathmandu Tribhuvan

Sun 3/15

11:00 pm-1:19 pm

2 stops27h 04m

$1,138

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 3/14

9:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

Mon 3/30

11:00 pm-6:56 pm

2 stops32h 41m

$1,153

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sun 1/11

7:24 am-11:10 am

2 stops38h 01m

Kathmandu Tribhuvan

Thu 2/12

12:35 pm-8:23 pm

2 stops45h 33m

$1,158

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Fri 5/1

7:10 pm-6:05 am

1 stop22h 10m

Kathmandu Tribhuvan

Tue 5/5

7:30 am-5:15 pm

1 stop22h 30m

$1,167

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 39 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 $1,202). 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 November 3, 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?

    Singapore Airlines, Turkish Airlines, and Cathay Pacific can get you from State of Washington to Kathmandu in just under 23h 20m. Your travel time can differ by up to 38h 37m. 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 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 $1,202). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$899Average$1,410FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,082Average$1,352FlexibilityNo cancel feeOn-time77%
EmiratesCheapest$1,138Average$1,341FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,150Average$1,633FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,153Average$1,437FlexibilityNo cancel feeOn-time72%

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