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Kathmandu

$312+ 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
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,012
(FlightHub)

One-way from

$690
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$1,272
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. 18% potential increase in price ($311 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This FlightHub deal was found by Cheapflights users on 4/29. 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.
Thu 9/47:00 amPDX - KTM
2 stops26h 00mSingapore Airlines
Sat 9/2011:00 pmKTM - PDX
2 stops26h 09mSingapore Airlines
Deal found 4/29$1,012
This oojo deal was found by Cheapflights users on 4/30. 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.
Tue 9/162:30 pmPDX - KTM
2 stops42h 30mCathay Pacific
Tue 9/3011:00 pmKTM - PDX
2 stops37h 35mCathay Pacific
Deal found 4/30$1,147
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:00 amPDX - KTM
2 stops37h 05mQatar Airways
Wed 10/295:40 pmKTM - PDX
2 stops49h 23mQatar Airways
Deal found 4/30$1,154
This Trip.com deal was found by Cheapflights users on 4/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/184:30 pmSEA - KTM
2 stops32h 45mMultiple Airlines
Mon 11/33:00 pmKTM - SEA
2 stops36h 05mMultiple Airlines
Deal found 4/30$1,161
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/37:10 pmSEA - KTM
1 stop22h 20mTurkish Airlines
Tue 9/27:40 amKTM - SEA
1 stop22h 20mTurkish Airlines
Deal found 4/30$1,189
This Priceline deal was found by Cheapflights users on 5/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/49:25 pmSEA - KTM
2 stops58h 30mSingapore Airlines
Wed 11/1911:05 pmKTM - SEA
1 stop21h 50mSingapore Airlines
Deal found 5/1$1,193
This oojo deal was found by Cheapflights users on 4/30. 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.
Tue 5/136:59 pmSEA - KTM
2 stops38h 01mCathay Pacific
Mon 6/211:00 pmKTM - SEA
2 stops35h 21mCathay Pacific
Deal found 4/30$1,232
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:25 amGEG - KTM
2 stops45h 35mQatar Airways
Tue 10/1410:05 amKTM - GEG
2 stops43h 34mQatar Airways
Deal found 4/30$1,234
This oojo deal was found by Cheapflights users on 4/30. 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 9/254:30 pmSEA - KTM
1 stop36h 35mQatar Airways
Tue 10/285:40 pmKTM - SEA
1 stop31h 50mQatar Airways
Deal found 4/30$1,262
This Singapore Airlines deal was found by Cheapflights users on 4/30. 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 10/16:25 amGEG - KTM
2 stops50h 30mMultiple Airlines
Wed 11/1211:05 pmKTM - GEG
3 stops37h 13mMultiple Airlines
Deal found 4/30$1,466
This Singapore Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 10/217:30 amPDX - KTM
3 stops49h 30mMultiple Airlines
Tue 12/911:00 pmKTM - PDX
2 stops33h 23mMultiple Airlines
Deal found 4/28$1,639
This Expedia deal was found by Cheapflights users on 4/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/144:20 pmSEA - KTM
2 stops49h 30mSWISS
Sat 6/219:00 pmKTM - SEA
2 stops54h 40mSWISS
Deal found 4/30$1,714

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 May 1, 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

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Thu 9/4

7:00 am-9:45 pm

2 stops26h 00m

Kathmandu Tribhuvan

Sat 9/20

11:00 pm-12:24 pm

2 stops26h 09m

$1,012

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Tue 9/16

2:30 pm-9:45 pm

2 stops42h 30m

Kathmandu Tribhuvan

Tue 9/30

11:00 pm-11:50 pm

2 stops37h 35m

$1,147

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sun 9/21

7:00 am-8:50 am

2 stops37h 05m

Kathmandu Tribhuvan

Wed 10/29

5:40 pm-6:18 am

2 stops49h 23m

$1,154

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 10/18

4:30 pm-2:00 pm

2 stops32h 45m

Kathmandu Tribhuvan

Mon 11/3

3:00 pm-1:20 pm

2 stops36h 05m

$1,161

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sun 8/3

7:10 pm-6:15 am

1 stop22h 20m

Kathmandu Tribhuvan

Tue 9/2

7:40 am-5:15 pm

1 stop22h 20m

$1,189

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sun 5/11

10:15 am-9:45 pm

1 stop22h 45m

Kathmandu Tribhuvan

Mon 5/26

11:00 pm-8:45 am

1 stop22h 30m

$1,204

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 5/13

6:59 pm-9:45 pm

2 stops38h 01m

Kathmandu Tribhuvan

Mon 6/2

11:00 pm-9:36 pm

2 stops35h 21m

$1,232

SpokaneKathmandu

GEG - KTM

GEGKTM

Spokane

Sun 9/14

6:25 am-4:45 pm

2 stops45h 35m

Kathmandu Tribhuvan

Tue 10/14

10:05 am-4:54 pm

2 stops43h 34m

$1,234

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 9/25

4:30 pm-5:50 pm

1 stop36h 35m

Kathmandu Tribhuvan

Tue 10/28

5:40 pm-12:45 pm

1 stop31h 50m

$1,262

SpokaneKathmandu

GEG - KTM

GEGKTM

Spokane

Wed 10/1

6:25 am-9:40 pm

2 stops50h 30m

Kathmandu Tribhuvan

Wed 11/12

11:05 pm-10:33 pm

3 stops37h 13m

$1,466

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 23 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, 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 $1,886). 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 May 1, 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 May 1, 2025.
To help decide which airline to fly from Washington to Kathmandu, see what other customers have to say about Singapore Airlines, Emirates and Cathay Pacific. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,292 reviews

Comfort

7.9

Boarding

8.2

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very good
1,292 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Comfort

7.9

Boarding

8.2

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Emirates
8.0
Very good
3,215 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Comfort

7.9

Boarding

8.2

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Cathay Pacific
7.5
Good
855 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Comfort

7.9

Boarding

8.2

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
China Southern
7.5
Good
96 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Comfort

7.9

Boarding

8.2

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
SWISS
7.5
Good
1,588 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Comfort

7.9

Boarding

8.2

Entertainment

8.0

Food

7.7

Crew

8.6

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

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 Air India. According to our data, you can fly for as low as $824. Users have also found prices from $923 and $1,184 on China Southern and Singapore 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 $1,886). 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

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$889Average$1,399FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,116Average$1,374FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$1,151Average$1,630FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,172Average$1,437FlexibilityNo cancel feeOn-time72%
EmiratesCheapest$1,688Average$2,160FlexibilityNo cancel feeOn-time75%

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