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$617+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — SEA
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Cheap 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 January 8, 2026.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$1,190
(Korean Air)

One-way from

$617
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$2,591
Provider with most accurate pricing for Kathmandu Tribhuvan-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Kathmandu Tribhuvan-Seattle/Tacoma Intl flights.
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From Kathmandu Tribhuvan to Seattle/Tacoma Intl
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One-way flight from Kathmandu Tribhuvan to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 8% potential increase in price ($152 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($100 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find 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 January 8, 2026.

This Orbitz deal was found by Cheapflights users on 1/6. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:00 pmKTM - SEA
2 stops23h 02mMultiple Airlines
Sat 7/117:20 pmSEA - KTM
2 stops37h 40mMultiple Airlines
Deal found 1/6$989
This Korean Air deal was found by Cheapflights users on 1/7. 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.
Tue 1/277:20 pmKTM - SEA
1 stop27h 25mKorean Air
Thu 4/3012:50 pmSEA - KTM
1 stop39h 15mKorean Air
Deal found 1/7$1,190
This FlightHub deal was found by Cheapflights users on 1/6. 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 7/710:50 pmKTM - SEA
1 stop46h 40mSingapore Airlines
Sat 7/1110:15 amSEA - KTM
1 stop46h 30mSingapore Airlines
Deal found 1/6$1,263
This KLM deal was found by Cheapflights users on 1/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/275:10 pmKTM - SEA
2 stops32h 25mKLM
Thu 4/301:45 pmSEA - KTM
2 stops35h 35mKLM
Deal found 1/7$1,294
This Trip.com deal was found by Cheapflights users on 1/6. 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.
Wed 2/1810:50 amKTM - SEA
2 stops39h 30mMultiple Airlines
Thu 3/125:05 pmSEA - KTM
2 stops28h 00mMultiple Airlines
Deal found 1/6$1,313
This FlightHub deal was found by Cheapflights users on 1/7. 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 1/279:10 amKTM - SEA
2 stops45h 17mQatar Airways
Thu 4/304:30 pmSEA - KTM
1 stop26h 40mQatar Airways
Deal found 1/7$1,319
This FlightHub deal was found by Cheapflights users on 1/6. 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 2/1811:00 pmKTM - SEA
1 stop45h 55mSingapore Airlines
Thu 3/129:45 amSEA - KTM
1 stop47h 20mSingapore Airlines
Deal found 1/6$1,341
This oojo deal was found by Cheapflights users on 1/6. 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 10/1710:50 pmKTM - SEA
1 stop22h 40mSingapore Airlines
Sat 11/148:45 amSEA - KTM
1 stop47h 10mSingapore Airlines
Deal found 1/6$1,354
This Singapore Airlines deal was found by Cheapflights users on 1/6. 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.
Sat 10/1710:50 pmKTM - SEA
1 stop22h 40mMultiple Airlines
Sat 11/141:40 pmSEA - KTM
2 stops42h 15mMultiple Airlines
Deal found 1/6$1,360
This oojo deal was found by Cheapflights users on 1/7. 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.
Sun 2/2212:35 pmKTM - SEA
1 stop42h 15mTurkish Airlines
Sun 3/17:00 pmSEA - KTM
1 stop26h 25mTurkish Airlines
Deal found 1/7$1,369
This Ovago deal was found by Cheapflights users on 1/7. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/221:45 pmKTM - SEA
2 stops60h 35mMultiple Airlines
Sun 3/14:05 pmSEA - KTM
2 stops36h 45mMultiple Airlines
Deal found 1/7$1,378

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 January 8, 2026.
Use the filters below to find and compare flights from Kathmandu to Seattle that are best for you.

Fly from

Kathmandu

Fly to

Seattle

Route

Depart

Return

Price

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 1/27

7:20 pm-9:00 am

1 stop27h 25m

Seattle/Tacoma Intl

Thu 4/30

12:50 pm-4:50 pm

1 stop39h 15m

$1,190

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 1/27

5:10 pm-11:50 am

2 stops32h 25m

Seattle/Tacoma Intl

Thu 4/30

1:45 pm-2:05 pm

2 stops35h 35m

$1,294

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 1/27

9:10 am-4:42 pm

2 stops45h 17m

Seattle/Tacoma Intl

Thu 4/30

4:30 pm-7:55 am

1 stop26h 40m

$1,319

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 2/18

11:00 pm-7:10 am

1 stop45h 55m

Seattle/Tacoma Intl

Thu 3/12

9:45 am-9:50 pm

1 stop47h 20m

$1,341

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sun 2/22

12:35 pm-5:05 pm

1 stop42h 15m

Seattle/Tacoma Intl

Sun 3/1

7:00 pm-11:10 am

1 stop26h 25m

$1,369

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sun 2/22

1:45 pm-12:35 pm

2 stops60h 35m

Seattle/Tacoma Intl

Sun 3/1

4:05 pm-6:35 pm

2 stops36h 45m

$1,378

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 2/18

12:35 pm-5:05 pm

1 stop42h 15m

Seattle/Tacoma Intl

Thu 3/12

8:15 am-4:25 pm

2 stops43h 25m

$1,397

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 1/27

6:35 am-6:49 pm

2 stops25h 59m

Seattle/Tacoma Intl

Thu 4/30

7:10 am-6:35 am

3 stops34h 40m

$1,800

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 5/23

1:25 pm-11:05 pm

3 stops46h 25m

$618

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sun 2/22

9:05 pm-6:40 pm

3 stops59h 20m

$689

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 12 results
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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star

*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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Kathmandu-Seattle flight deals on Cheapflights vs. Mytrip >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 Mytrip the most. Mytrip 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 January 8, 2026.
Peruse reviews from past customers who have flown with Korean Air, Emirates, and 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.
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,188 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Emirates
8.1
Very good
3,463 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Singapore Airlines
8.1
Very good
1,429 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Turkish Airlines
7.3
Good
4,154 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

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 $1,190, Korean Air can have you in Seattle from Kathmandu in 27h 25m. 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 are the cheapest airlines flying from Kathmandu to Seattle round-trip?

    Turkish Airlines, at $941, was found to be the cheapest airline from Kathmandu to Seattle.Alternate airlines to your destination round-trip include Singapore Airlines and Korean Air. Users have found that Turkish Airlines is 41% 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 Singapore Airlines from $572 and Korean Air from $646 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
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Marysville
Fife
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Federal Way
Chehalis
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Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Kathmandu to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Kathmandu to Spokane flights
Kathmandu to Portland flights

Top 4 airlines flying from Kathmandu to Seattle

Discover the top 4 airlines 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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,103Average$1,463FlexibilityNo cancel feeOn-time81%
Korean AirCheapest$1,191Average$1,281FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,313Average$1,455FlexibilityNo cancel feeOn-time77%
EmiratesCheapest$1,717Average$1,744FlexibilityNo cancel feeOn-time75%

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