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Kathmandu

$310+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KTM
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,102
(Justfly.com)

One-way from

$310
(Justfly.com)

Popular in

June

Cheapest in

January

Average price

$1,329
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.
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From Washington to Kathmandu Tribhuvan
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One-way flight from Washington to Kathmandu Tribhuvan
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Highest demand for flights based on searches. 17% potential increase in price ($297 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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 March 31, 2025.

This Justfly.com deal was found by Cheapflights users on 3/30. 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 9/166:05 amPDX - KTM
2 stops26h 55mSingapore Airlines
Tue 9/3011:00 pmKTM - PDX
2 stops27h 35mSingapore Airlines
Deal found 3/30$1,075
This Justfly.com deal was found by Cheapflights users on 3/30. 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.
Sat 10/115:40 pmSEA - KTM
2 stops39h 15mSingapore Airlines
Wed 10/2211:10 pmKTM - SEA
1 stop22h 20mSingapore Airlines
Deal found 3/30$1,095
This Singapore Airlines deal was found by Cheapflights users on 3/30. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:00 amPDX - KTM
2 stops50h 00mMultiple Airlines
Mon 10/2011:10 pmKTM - PDX
2 stops27h 21mMultiple Airlines
Deal found 3/30$1,108
This oojo deal was found by Cheapflights users on 3/30. 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 5/19:28 pmSEA - KTM
2 stops59h 47mCathay Pacific
Mon 5/1911:10 pmKTM - SEA
2 stops32h 31mCathay Pacific
Deal found 3/30$1,161
This Fareboom deal was found by Cheapflights users on 3/30. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/75:30 pmPDX - KTM
2 stops39h 45mCathay Pacific
Sat 11/111:15 pmKTM - PDX
2 stops35h 08mCathay Pacific
Deal found 3/30$1,175
This Trip.com deal was found by Cheapflights users on 3/29. 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.
Thu 9/251:10 amSEA - KTM
2 stops48h 05mMultiple Airlines
Fri 10/313:00 pmKTM - SEA
2 stops41h 00mMultiple Airlines
Deal found 3/29$1,184
This FlightHub deal was found by Cheapflights users on 3/29. 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.
Sun 4/277:10 pmSEA - KTM
1 stop22h 20mTurkish Airlines
Thu 9/47:40 amKTM - SEA
1 stop22h 20mTurkish Airlines
Deal found 3/29$1,277
This Indian Eagle deal was found by Cheapflights users on 3/30. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/210:35 amPDX - KTM
2 stops40h 05mQatar Airways
Tue 12/305:40 pmKTM - PDX
2 stops36h 33mQatar Airways
Deal found 3/30$1,401
This Singapore Airlines deal was found by Cheapflights users on 3/31. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:30 amGEG - KTM
2 stops50h 30mMultiple Airlines
Tue 10/1411:00 pmKTM - GEG
3 stops36h 18mMultiple Airlines
Deal found 3/31$1,450
This FlightHub deal was found by Cheapflights users on 3/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:40 pmSEA - KTM
1 stop36h 05mQatar Airways
Wed 11/196:45 pmKTM - SEA
1 stop30h 45mQatar Airways
Deal found 3/31$1,614
This oojo deal was found by Cheapflights users on 3/29. 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 5/125:40 pmPUW - KTM
2 stops50h 25mQatar Airways
Fri 8/16:00 pmKTM - PUW
2 stops37h 28mQatar Airways
Deal found 3/29$2,299
This KAYAK deal was found by Cheapflights users on 3/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1211:30 amGEG - KTM
2 stops40h 30mQatar Airways
Fri 8/16:00 pmKTM - GEG
2 stops38h 31mQatar Airways
Deal found 3/29$2,428

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 March 31, 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

Thu 9/4

5:45 pm-9:45 pm

2 stops39h 15m

Kathmandu Tribhuvan

Sat 9/20

11:00 pm-8:45 am

1 stop22h 30m

$1,102

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 5/1

9:28 pm-10:00 pm

2 stops59h 47m

Kathmandu Tribhuvan

Mon 5/19

11:10 pm-6:56 pm

2 stops32h 31m

$1,161

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 9/25

1:10 am-2:00 pm

2 stops48h 05m

Kathmandu Tribhuvan

Fri 10/31

3:00 pm-7:15 pm

2 stops41h 00m

$1,184

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Fri 5/2

5:50 pm-10:00 pm

2 stops39h 25m

Kathmandu Tribhuvan

Mon 5/12

11:10 pm-4:43 pm

2 stops30h 18m

$1,221

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sun 4/27

7:10 pm-6:15 am

1 stop22h 20m

Kathmandu Tribhuvan

Thu 9/4

7:40 am-5:15 pm

1 stop22h 20m

$1,277

SpokaneKathmandu

GEG - KTM

GEGKTM

Spokane

Sun 9/14

6:30 am-9:45 pm

2 stops50h 30m

Kathmandu Tribhuvan

Tue 10/14

11:00 pm-10:33 pm

3 stops36h 18m

$1,450

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 9/25

11:29 am-4:45 pm

2 stops40h 31m

Kathmandu Tribhuvan

Tue 10/28

6:45 pm-12:45 pm

1 stop30h 45m

$1,656

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Fri 5/2

9:34 pm-9:45 pm

3 stops59h 26m

Kathmandu Tribhuvan

Mon 5/12

11:00 pm-1:49 pm

2 stops27h 34m

$1,664

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Fri 4/4

11:50 am-8:50 am

2 stops32h 15m

Kathmandu Tribhuvan

Sun 4/6

6:00 pm-10:49 pm

2 stops41h 34m

$2,088

PullmanKathmandu

PUW - KTM

PUWKTM

Pullman Moscow Regional

Mon 5/12

5:40 pm-8:50 am

2 stops50h 25m

Kathmandu Tribhuvan

Fri 8/1

6:00 pm-6:43 pm

2 stops37h 28m

$2,299

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 19 results
1
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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, September is the cheapest month in which you can book a flight from State of Washington to Kathmandu (average of $1,237). Flying from State of Washington to Kathmandu in June is currently the most expensive (average of $1,973). 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 March 31, 2025.

When flying from State of Washington to Kathmandu, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Kathmandu by month

Plan your trip to Kathmandu by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kathmandu ranges from 0.0 - 14.6 inches per month. July is typically the wettest month, when rainfall can reach 14.6 in. November is typically the driest time to visit Kathmandu when rainfall is around 0.0 in.

Temperature in Kathmandu by month

Plan your trip to Kathmandu by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kathmandu, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Kathmandu

Get insights into the airlines that provide service to Kathmandu. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kathmandu. Reviews last updated March 31, 2025.
To help decide which airline to fly from Washington to Kathmandu, see what other customers have to say about Singapore Airlines, Cathay Pacific and Qatar Airways. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,286 reviews

Comfort

7.9

Food

7.7

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Singapore Airlines
8.1
Very good
1,286 reviews
Singapore Airlines
8.1
Very good
1,286 reviews

Comfort

7.9

Food

7.7

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Cathay Pacific
7.5
Good
841 reviews
Singapore Airlines
8.1
Very good
1,286 reviews

Comfort

7.9

Food

7.7

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Qatar Airways
7.4
Good
3,541 reviews
Singapore Airlines
8.1
Very good
1,286 reviews

Comfort

7.9

Food

7.7

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Turkish Airlines
7.3
Good
3,748 reviews
Singapore Airlines
8.1
Very good
1,286 reviews

Comfort

7.9

Food

7.7

Entertainment

8.0

Crew

8.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

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.

  • 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 $310. Users have also found prices from $1,048 and $1,289 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, September is the cheapest month in which you can book a flight from State of Washington to Kathmandu (average of $1,237). Flying from State of Washington to Kathmandu in June is currently the most expensive (average of $1,973). 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.

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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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$889Average$1,322FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,116Average$1,390FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$1,133Average$1,620FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,172Average$1,437FlexibilityNo cancel feeOn-time72%
EmiratesCheapest$1,688Average$2,160FlexibilityNo cancel feeOn-time75%
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