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$593+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
KTM — SEA
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$1,216
(Korean Air)

One-way from

$593
(Kiwi.com)

Popular in

November

Cheapest in

October

Average price

$1,873
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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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 14, 2025.

This Trip.com deal was found by Cheapflights users on 8/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/271:25 pmKTM - SEA
2 stops35h 15mMultiple Airlines
Sat 10/42:20 pmSEA - KTM
2 stops39h 05mMultiple Airlines
Deal found 8/13$1,320
This oojo deal was found by Cheapflights users on 8/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:05 pmKTM - SEA
1 stop30h 25mQatar Airways
Sat 10/47:59 pmSEA - KTM
2 stops56h 01mQatar Airways
Deal found 8/13$1,348
This OneTravel deal was found by Cheapflights users on 8/13. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2612:20 amKTM - SEA
1 stop25h 50mEmirates
Sat 10/45:15 pmSEA - KTM
1 stop36h 25mEmirates
Deal found 8/13$1,690

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 August 14, 2025.
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 2/10

7:20 pm-9:00 am

1 stop27h 25m

Seattle/Tacoma Intl

Thu 2/12

11:00 am-5:30 pm

1 stop40h 45m

$1,216

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 9/27

1:25 pm-11:55 am

2 stops35h 15m

Seattle/Tacoma Intl

Sat 10/4

2:20 pm-6:10 pm

2 stops39h 05m

$1,320

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 2/10

6:45 pm-6:51 pm

2 stops37h 51m

Seattle/Tacoma Intl

Sat 2/14

4:05 pm-8:20 am

1 stop26h 30m

$1,323

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 9/27

7:05 pm-12:45 pm

1 stop30h 25m

Seattle/Tacoma Intl

Sat 10/4

7:59 pm-4:45 pm

2 stops56h 01m

$1,348

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 2/10

12:35 pm-5:05 pm

1 stop42h 15m

Seattle/Tacoma Intl

Sat 2/14

7:00 pm-11:10 am

1 stop26h 25m

$1,437

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 2/10

6:45 pm-11:40 am

1 stop30h 40m

Seattle/Tacoma Intl

Thu 2/12

7:00 am-8:20 am

2 stops35h 35m

$1,458

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 2/10

6:45 pm-11:40 am

1 stop30h 40m

Seattle/Tacoma Intl

Fri 2/13

11:00 pm-8:20 am

2 stops43h 35m

$1,505

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 2/10

5:40 pm-11:40 am

1 stop31h 45m

Seattle/Tacoma Intl

Wed 2/11

4:05 pm-8:20 am

1 stop26h 30m

$1,525

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 9/9

4:40 pm-7:54 pm

3 stops39h 59m

$593

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 9/25

9:00 pm-7:54 pm

3 stops35h 39m

$604

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 16 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Kathmandu to Seattle

What is the cheapest month to book a flight from Kathmandu to Seattle?

Currently, January is the cheapest month in which you can book a flight from Kathmandu to Seattle (average of $238). Flying from Kathmandu to Seattle in June is currently the most expensive (average of $389). 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 KTM to SEA?

Find hourly flight availability from Kathmandu to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

A simple way to save on the total cost of your ticket is to fly from Kathmandu to Seattle in the morning. If you’re flexible enough to do this you can expect to save up to 33% on your trip compared to booking a flight at noon.

How much does it cost to fly round-trip from Kathmandu to Seattle?

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 August 14, 2025.
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
1,131 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Comfort

8.3

Boarding

8.5

Food

8.1

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
1,131 reviews
Korean Air
8.4
Very good
1,131 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Comfort

8.3

Boarding

8.5

Food

8.1

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
3,315 reviews
Korean Air
8.4
Very good
1,131 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Comfort

8.3

Boarding

8.5

Food

8.1

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
1,346 reviews
Korean Air
8.4
Very good
1,131 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Comfort

8.3

Boarding

8.5

Food

8.1

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!!
Qatar Airways
7.4
Good
3,608 reviews
Korean Air
8.4
Very good
1,131 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Comfort

8.3

Boarding

8.5

Food

8.1

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
3,940 reviews
Korean Air
8.4
Very good
1,131 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Comfort

8.3

Boarding

8.5

Food

8.1

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.

  • What are the cheapest airlines flying from Kathmandu to Seattle round-trip?

    Singapore Airlines, at $1,103, was found to be the cheapest airline from Kathmandu to Seattle.Alternate airlines to your destination round-trip include Korean Air and Turkish Airlines. Users have found that Singapore Airlines is 32% cheaper than the other options available to this destination.

  • 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.

  • What is the cheapest month to book a flight from Kathmandu to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Kathmandu to Seattle (average of $238). Flying from Kathmandu to Seattle in June is currently the most expensive (average of $389). 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

Traveling to a place near Seattle?

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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 Portland flights
Kathmandu to Spokane flights

Top 5 airlines flying from Kathmandu to Seattle

Discover the top 5 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,103Average$1,563FlexibilityNo cancel feeOn-time81%
Korean AirCheapest$1,174Average$1,358FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,313Average$1,458FlexibilityNo cancel feeOn-time77%
EmiratesCheapest$1,598Average$1,735FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,658Average$1,830FlexibilityNo cancel feeOn-time68%

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