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Cheap flights from Kathmandu to Seattle from $686

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kathmandu to Seattle departing on 6/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Kathmandu to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 6:10 pm
SEA
-
KTM
36h 10m
2 stops
$1,328Multiple Airlines
Tue, May 19 - Mon, Jun 15
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 12:50 pm
SEA
-
KTM
30h 50m
2 stops
$1,333Multiple Airlines
Tue, May 12 - Tue, May 26
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 6:10 pm
SEA
-
KTM
36h 10m
2 stops
$1,345Multiple Airlines
Sun, May 24 - Sun, May 31
Qatar Airways Logo
7:10 pm - 2:05 pm
KTM
-
SEA
31h 40m
1 stop
Qatar Airways Logo
4:25 pm - 8:50 am
SEA
-
KTM
27h 40m
1 stop
$1,348Qatar Airways
Fri, Jun 12 - Mon, Jun 29
Qatar Airways Logo
7:10 pm - 2:05 pm
KTM
-
SEA
31h 40m
1 stop
Qatar Airways Logo
4:25 pm - 8:50 am
SEA
-
KTM
27h 40m
1 stop
$1,351Qatar Airways
Tue, May 19 - Mon, Jun 15
Qatar Airways Logo
7:10 pm - 2:05 pm
KTM
-
SEA
31h 40m
1 stop
Qatar Airways Logo
4:25 pm - 8:50 am
SEA
-
KTM
27h 40m
1 stop
$1,353Qatar Airways
Fri, May 29 - Tue, Jun 23
Qatar Airways Logo
7:10 pm - 2:05 pm
KTM
-
SEA
31h 40m
1 stop
Qatar Airways Logo
4:25 pm - 8:50 am
SEA
-
KTM
27h 40m
1 stop
$1,358Qatar Airways
Fri, Jun 12 - Wed, Jul 1
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 12:50 pm
SEA
-
KTM
30h 50m
2 stops
$1,365Multiple Airlines
Fri, May 8 - Tue, May 26
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 12:50 pm
SEA
-
KTM
30h 50m
2 stops
$1,377Multiple Airlines
Thu, May 28 - Tue, Jun 23
Korean Air Logo
7:20 pm - 1:25 pm
KTM
-
SEA
30h 50m
1 stop
Korean Air Logo
1:05 pm - 5:15 pm
SEA
-
KTM
39h 25m
1 stop
$1,378Korean Air
Sat, Jun 13 - Thu, Jul 2

Qatar Airways flights from Kathmandu to Seattle

Our best Qatar Airways deals on Kathmandu to Seattle flight tickets
Qatar Airways
Jun 12
KTM7:10 pmKathmandu Tribhuvan
31h 40m
1 stop
SEA2:05 pmSeattle/Tacoma Intl
Jun 29
SEA4:25 pmSeattle/Tacoma Intl
27h 40m
1 stop
KTM8:50 amKathmandu Tribhuvan
$1,348
Qatar Airways
May 19
KTM7:10 pmKathmandu Tribhuvan
31h 40m
1 stop
SEA2:05 pmSeattle/Tacoma Intl
Jun 15
SEA4:25 pmSeattle/Tacoma Intl
27h 40m
1 stop
KTM8:50 amKathmandu Tribhuvan
$1,351
Qatar Airways
May 29
KTM7:10 pmKathmandu Tribhuvan
31h 40m
1 stop
SEA2:05 pmSeattle/Tacoma Intl
Jun 23
SEA4:25 pmSeattle/Tacoma Intl
27h 40m
1 stop
KTM8:50 amKathmandu Tribhuvan
$1,353

Korean Air flights from Kathmandu to Seattle

Our best Korean Air deals on Kathmandu to Seattle flight tickets
Korean Air
Jun 13
KTM7:20 pmKathmandu Tribhuvan
30h 50m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Jul 2
SEA1:05 pmSeattle/Tacoma Intl
39h 25m
1 stop
KTM5:15 pmKathmandu Tribhuvan
$1,378
Korean Air
Jun 13
KTM7:20 pmKathmandu Tribhuvan
30h 50m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Jun 28
SEA1:20 pmSeattle/Tacoma Intl
39h 10m
1 stop
KTM5:15 pmKathmandu Tribhuvan
$1,536

momondo 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, momondo users made 832,500 searches. Data last updated April 11, 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

Tue 5/19

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Mon 6/15

5:15 pm-6:10 pm

2 stops36h 10m

$1,328

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 5/12

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Tue 5/26

5:15 pm-12:50 pm

2 stops30h 50m

$1,333

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sun 5/24

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Sun 5/31

5:15 pm-6:10 pm

2 stops36h 10m

$1,345
Quickest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 6/12

7:10 pm-2:05 pm

1 stop31h 40m

Seattle/Tacoma Intl

Mon 6/29

4:25 pm-8:50 am

1 stop27h 40m

$1,348

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 5/19

7:10 pm-2:05 pm

1 stop31h 40m

Seattle/Tacoma Intl

Mon 6/15

4:25 pm-8:50 am

1 stop27h 40m

$1,351

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 5/29

7:10 pm-2:05 pm

1 stop31h 40m

Seattle/Tacoma Intl

Tue 6/23

4:25 pm-8:50 am

1 stop27h 40m

$1,353

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 6/12

7:10 pm-2:05 pm

1 stop31h 40m

Seattle/Tacoma Intl

Wed 7/1

4:25 pm-8:50 am

1 stop27h 40m

$1,358

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 5/8

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Tue 5/26

5:15 pm-12:50 pm

2 stops30h 50m

$1,365

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 5/28

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Tue 6/23

5:15 pm-12:50 pm

2 stops30h 50m

$1,377

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 6/13

7:20 pm-1:25 pm

1 stop30h 50m

Seattle/Tacoma Intl

Thu 7/2

1:05 pm-5:15 pm

1 stop39h 25m

$1,378

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Kathmandu to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Kathmandu and Seattle?

Can stopping save me money on Kathmandu to Seattle flights?

You could potentially save up to 7% on your flight if you consider stops on a Kathmandu to Seattle flight.

How have Kathmandu to Seattle flight prices changed over time?

As of April 2026, prices for Kathmandu to Seattle flights are approximately 11% more expensive when compared to flights at the same time last year.

When to book flights from Kathmandu to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Kathmandu to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Kathmandu to Seattle (KTM to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kathmandu to Seattle

Fastest flight time

25h 35m

Direct flights

None
The fastest flight from Kathmandu to Seattle takes 25h 35m
There are no direct flights from Kathmandu to Seattle. There are no popular flight routes from Kathmandu to Seattle.
Search flight deals

Frequently asked questions about flying from Kathmandu to Seattle

  • How far is Kathmandu Tribhuvan to Seattle/Tacoma Intl by plane?

    The distance between Kathmandu Tribhuvan and Seattle/Tacoma Intl is about 6950.3 mi. Flights usually cover this in 25h 35m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Kathmandu to Seattle?

Best airlines flying from Kathmandu to Seattle

Compare and see reviews for airlines that fly from Kathmandu to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $1,148Free CancellationRating
8.2
1,491 reviews
Search Singapore Airlines flights
EmiratesPriceFrom $1,717Free CancellationRating
8.1
3,557 reviews
Search Emirates flights

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Why use momondo?

Why should I use momondo to find a flight deal from Kathmandu to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Kathmandu to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Kathmandu to Seattle with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Kathmandu to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from Kathmandu to Seattle?

momondo helps you find the best flight between Kathmandu and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Kathmandu to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Kathmandu to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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