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$679+ Cheap flights from Kathmandu (KTM) to Seattle (SEA)

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — SEA
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
1 adult, Economy
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Find cheap flights from Kathmandu to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Kathmandu to Seattle

Cheapest flights from Kathmandu to Seattle
Explore the most affordable flight options available from Kathmandu to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.

This Korean Air deal was found by Cheapflights users on 7/28. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:20 pm
KTM
-
SEA
1 stop28h 05m
Korean Air
Thu 10/2912:00 pm
SEA
-
KTM
1 stop41h 00m
Korean Air
Deal found 7/28$1,210
This Qatar Airways deal was found by Cheapflights users on 7/26. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:30 pm
KTM
-
SEA
1 stop34h 00m
Qatar Airways
Thu 9/174:25 pm
SEA
-
KTM
1 stop35h 35m
Qatar Airways
Deal found 7/26$1,312
This Trip.com deal was found by Cheapflights users on 7/26. 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.
Sun 8/2312:25 am
KTM
-
SEA
2 stops28h 55m
Multiple Airlines
Sun 10/41:15 am
SEA
-
KTM
2 stops46h 25m
Multiple Airlines
Deal found 7/26$1,322
This Mytrip deal was found by Cheapflights users on 7/26. 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.
Wed 9/912:25 am
KTM
-
SEA
2 stops32h 00m
Multiple Airlines
Wed 9/161:30 am
SEA
-
KTM
2 stops33h 10m
Multiple Airlines
Deal found 7/26$1,327
This Korean Air deal was found by Cheapflights users on 7/28. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:20 pm
KTM
-
SEA
1 stop28h 05m
Korean Air
Sun 11/111:00 am
SEA
-
KTM
1 stop41h 00m
Korean Air
Deal found 7/28$1,341
This KAYAK deal was found by Cheapflights users on 7/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:25 am
KTM
-
SEA
2 stops31h 40m
Multiple Airlines
Thu 10/291:10 am
SEA
-
KTM
2 stops31h 35m
Multiple Airlines
Deal found 7/28$1,407
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:10 am
KTM
-
SEA
2 stops42h 00m
Multiple Airlines
Thu 10/295:05 pm
SEA
-
KTM
2 stops36h 45m
Multiple Airlines
Deal found 7/28$1,438
This Qatar Airways deal was found by Cheapflights users on 7/26. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:30 pm
KTM
-
SEA
1 stop34h 00m
Qatar Airways
Mon 10/54:25 pm
SEA
-
KTM
1 stop35h 35m
Qatar Airways
Deal found 7/26$1,442
This Justfly.com deal was found by Cheapflights users on 7/24. 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 8/223:30 pm
KTM
-
SEA
1 stop34h 00m
Qatar Airways
Sat 8/294:25 pm
SEA
-
KTM
1 stop33h 05m
Qatar Airways
Deal found 7/24$1,443

Find flight deals from Kathmandu to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Kathmandu (KTM) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,210
(Korean Air)

One-way from

$679
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,429
Provider with most accurate pricing for Kathmandu Tribhuvan-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kathmandu Tribhuvan-Seattle/Tacoma Intl flights.
Search Deals
From Kathmandu Tribhuvan to Seattle/Tacoma Intl
Search Deals
One-way flight from Kathmandu Tribhuvan to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kathmandu to Seattle 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 July 29, 2026.
Use the filters below to find and compare flights from Kathmandu to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 9/10

3:30 pm-12:45 pm

1 stop34h 00m

Seattle/Tacoma Intl

Thu 9/17

4:25 pm-4:45 pm

1 stop35h 35m

$1,312

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sun 8/23

12:25 am-4:35 pm

2 stops28h 55m

Seattle/Tacoma Intl

Sun 10/4

1:15 am-12:25 pm

2 stops46h 25m

$1,322

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 9/9

12:25 am-7:40 pm

2 stops32h 00m

Seattle/Tacoma Intl

Wed 9/16

1:30 am-11:25 pm

2 stops33h 10m

$1,327

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Mon 8/24

3:30 pm-12:45 pm

1 stop34h 00m

Seattle/Tacoma Intl

Mon 10/5

4:25 pm-4:45 pm

1 stop35h 35m

$1,442

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 8/22

3:30 pm-12:45 pm

1 stop34h 00m

Seattle/Tacoma Intl

Sat 8/29

4:25 pm-2:15 pm

1 stop33h 05m

$1,443

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 10/13

6:45 pm-12:25 pm

1 stop30h 25m

Seattle/Tacoma Intl

Wed 10/28

9:13 am-9:50 am

2 stops35h 52m

$1,583

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 10/9

6:45 pm-12:25 pm

1 stop30h 25m

Seattle/Tacoma Intl

Thu 11/12

3:50 pm-5:30 pm

1 stop35h 55m

$1,593
Quickest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 11/20

6:45 pm-11:40 am

1 stop30h 40m

Seattle/Tacoma Intl

Sat 5/15

4:25 pm-8:50 am

1 stop27h 40m

$1,623

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 8/22

8:10 am-1:35 pm

2 stops42h 10m

Seattle/Tacoma Intl

Sat 8/29

5:15 pm-6:10 pm

2 stops36h 10m

$1,685
Cheapest one-way

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sun 9/27

2:00 pm-8:45 am

2 stops55h 30m

$679

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/24

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Kathmandu to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kathmandu to Seattle in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star
eDreamsPrice Accuracy2 starsTrust Score*3 stars
BudgetAirPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Kathmandu-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kathmandu-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kathmandu-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kathmandu-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kathmandu-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Kathmandu to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Kathmandu 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.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated July 29, 2026.
Peruse reviews from past customers who have flown with Singapore Airlines from Kathmandu to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very good
1,584 reviews

Comfort

8.0

Crew

8.6

Food

7.8

Overall

8.2

Boarding

8.3

Entertainment

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Singapore Airlines
8.2
Very good
1,584 reviews
Singapore Airlines
8.2
Very good
1,584 reviews

Comfort

8.0

Crew

8.6

Food

7.8

Overall

8.2

Boarding

8.3

Entertainment

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

Related info for your journey

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

  • How long is the flight from Kathmandu to Seattle?

    For as low as $1,210, Korean Air can have you in Seattle from Kathmandu in 28h 05m. There are 6962 mi between Kathmandu and Seattle. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Kathmandu to Seattle round-trip?

    Singapore Airlines, at $1,006, was found to be the cheapest airline from Kathmandu to Seattle.. Users have found that Singapore Airlines is 28% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Kathmandu to Seattle one-way?

    One-way options have recently been found by users for as low as $563 on Turkish Airlines. Other airlines that offer cheap prices include Emirates from $592 and Singapore Airlines from $725 one-way.

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

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

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

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

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

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

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
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Alternative routes for Kathmandu to Seattle

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Kathmandu to Portland flights

Top airline flying from Kathmandu to Seattle

Discover the top airline that operate flights from Kathmandu to Seattle. 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 July 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,006Average$1,288FlexibilityNo cancel feeOn-time81%

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