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Kathmandu

$379+ 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
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
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 June 16, 2025.

Round-trip from

$1,156
(Fareboom)

One-way from

$379
(FlightHub)

Popular in

June

Cheapest in

April

Average price

$1,699
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. 10% potential increase in price ($152 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 16, 2025.

This Fareboom deal was found by Cheapflights users on 6/15. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/112:36 pmGEG - KTM
2 stops29h 44mAir India
Sun 9/219:00 pmKTM - GEG
2 stops29h 41mAir India
Deal found 6/15$1,156
This Fareboom deal was found by Cheapflights users on 6/13. 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.
Mon 8/119:50 pmPDX - KTM
2 stops33h 30mMultiple Airlines
Fri 9/129:00 pmKTM - PDX
2 stops29h 19mMultiple Airlines
Deal found 6/13$1,181
This Expedia deal was found by Cheapflights users on 6/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2310:59 pmSEA - KTM
2 stops34h 01mMultiple Airlines
Sun 12/1411:15 pmKTM - SEA
2 stops28h 22mMultiple Airlines
Deal found 6/15$1,280
This FlightHub deal was found by Cheapflights users on 6/14. 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 9/1610:30 amPDX - KTM
2 stops33h 35mQatar Airways
Tue 9/306:00 pmKTM - PDX
2 stops39h 20mQatar Airways
Deal found 6/14$1,281
This Justfly.com deal was found by Cheapflights users on 6/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/310:15 amSEA - KTM
1 stop22h 45mSingapore Airlines
Mon 10/611:10 pmKTM - SEA
2 stops30h 29mSingapore Airlines
Deal found 6/15$1,291
This oojo deal was found by Cheapflights users on 6/14. 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 10/235:15 pmSEA - KTM
1 stop36h 25mEmirates
Mon 12/153:00 pmKTM - SEA
1 stop35h 20mEmirates
Deal found 6/14$1,300
This FlightHub deal was found by Cheapflights users on 6/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/157:10 pmSEA - KTM
1 stop22h 20mTurkish Airlines
Tue 7/227:40 amKTM - SEA
1 stop22h 20mTurkish Airlines
Deal found 6/15$1,322
This Singapore Airlines deal was found by Cheapflights users on 6/13. 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.
Mon 8/117:00 amPDX - KTM
3 stops50h 00mSingapore Airlines
Fri 9/1211:00 pmKTM - PDX
2 stops27h 19mSingapore Airlines
Deal found 6/13$1,395
This FlightHub deal was found by Cheapflights users on 6/14. 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 10/58:42 amSEA - KTM
2 stops48h 18mCathay Pacific
Sat 10/2511:00 pmKTM - SEA
2 stops32h 22mCathay Pacific
Deal found 6/14$1,404
This FlightHub deal was found by Cheapflights users on 6/14. 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 stops49h 07mQatar Airways
Deal found 6/14$1,544
This oojo deal was found by Cheapflights users on 6/14. 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 10/134:30 pmSEA - KTM
1 stop27h 35mQatar Airways
Mon 11/36:45 pmKTM - SEA
1 stop30h 45mQatar Airways
Deal found 6/14$1,551
This FlightHub deal was found by Cheapflights users on 6/14. 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 11/195:40 pmPDX - KTM
2 stops38h 35mCathay Pacific
Fri 1/911:15 pmKTM - PDX
2 stops27h 49mCathay Pacific
Deal found 6/14$1,740

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 June 16, 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

SpokaneKathmandu

GEG - KTM

GEGKTM

Spokane

Thu 9/11

2:36 pm-9:05 am

2 stops29h 44m

Kathmandu Tribhuvan

Sun 9/21

9:00 pm-1:56 pm

2 stops29h 41m

$1,156

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Mon 8/11

9:50 pm-8:05 pm

2 stops33h 30m

Kathmandu Tribhuvan

Fri 9/12

9:00 pm-1:34 pm

2 stops29h 19m

$1,181

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Tue 9/16

10:30 am-8:50 am

2 stops33h 35m

Kathmandu Tribhuvan

Tue 9/30

6:00 pm-8:35 pm

2 stops39h 20m

$1,281

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 8/25

5:15 pm-8:00 am

1 stop26h 00m

Kathmandu Tribhuvan

Sat 9/20

7:25 pm-1:25 pm

1 stop30h 45m

$1,305

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 8/11

5:15 pm-8:05 pm

2 stops38h 05m

Kathmandu Tribhuvan

Wed 8/20

1:25 pm-1:25 pm

2 stops36h 45m

$1,308

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 7/15

7:10 pm-6:15 am

1 stop22h 20m

Kathmandu Tribhuvan

Tue 7/22

7:40 am-5:15 pm

1 stop22h 20m

$1,322

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 8/25

5:59 pm-9:45 pm

2 stops39h 01m

Kathmandu Tribhuvan

Sat 9/20

11:00 pm-8:45 am

1 stop22h 30m

$1,326

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Mon 8/11

7:00 am-9:45 pm

3 stops50h 00m

Kathmandu Tribhuvan

Fri 9/12

11:00 pm-1:34 pm

2 stops27h 19m

$1,395

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-10:27 pm

2 stops49h 07m

$1,544

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Wed 11/19

5:40 pm-10:00 pm

2 stops38h 35m

Kathmandu Tribhuvan

Fri 1/9

11:15 pm-1:19 pm

2 stops27h 49m

$1,740

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

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 $1,735). 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 June 16, 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 June 16, 2025.
To help decide which airline to fly from Washington to Kathmandu, see what other customers have to say about Korean Air, Emirates and Singapore Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,090 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,090 reviews
Korean Air
8.4
Very good
1,090 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Emirates
8.1
Very good
3,267 reviews
Korean Air
8.4
Very good
1,090 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,308 reviews
Korean Air
8.4
Very good
1,090 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Cathay Pacific
7.5
Good
893 reviews
Korean Air
8.4
Very good
1,090 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Southern
7.5
Good
99 reviews
Korean Air
8.4
Very good
1,090 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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 $379. Users have also found prices from $653 and $762 on Etihad 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 $1,735). 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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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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$904Average$1,403FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,105Average$1,360FlexibilityNo cancel feeOn-time77%
EmiratesCheapest$1,138Average$2,080FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,159Average$1,555FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,172Average$1,437FlexibilityNo cancel feeOn-time72%

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