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Cheap flights from Kathmandu to Seattle from $580

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 3/10. 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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0 bags

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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
11:00 pm - 2:22 pm
KTM
-
SEA
28h 07m
2 stops
Multiple Airlines Logo
9:55 am - 9:45 pm
SEA
-
KTM
47h 05m
2 stops
$1,055Multiple Airlines
Mon, Jun 22 - Tue, Jul 14
Korean Air Logo
7:20 pm - 10:00 am
KTM
-
SEA
27h 25m
1 stop
Korean Air Logo
12:50 pm - 4:50 pm
SEA
-
KTM
39h 15m
1 stop
$1,164Korean Air
Tue, Mar 24 - Sun, Mar 29
Korean Air Logo
7:20 pm - 10:50 am
KTM
-
SEA
28h 15m
1 stop
Korean Air Logo
1:20 pm - 4:50 pm
SEA
-
KTM
38h 45m
1 stop
$1,189Korean Air
Sat, Jun 20 - Sun, Jul 12
Cathay Pacific Logo
11:00 pm - 10:35 am
KTM
-
SEA
24h 20m
1 stop
Cathay Pacific Logo
12:15 pm - 9:45 pm
SEA
-
KTM
20h 45m
1 stop
$1,218Cathay Pacific
Mon, Jun 22 - Tue, Jul 14
Qatar Airways Logo
5:40 pm - 11:40 am
KTM
-
SEA
31h 45m
1 stop
Qatar Airways Logo
4:25 pm - 8:50 am
SEA
-
KTM
27h 40m
1 stop
$1,258Qatar Airways
Thu, Feb 12 - Wed, Aug 12
Qatar Airways Logo
9:10 am - 11:40 am
KTM
-
SEA
40h 15m
1 stop
Qatar Airways Logo
4:05 pm - 7:55 am
SEA
-
KTM
26h 05m
1 stop
$1,261Qatar Airways
Wed, Feb 18 - Wed, Feb 25
Multiple Airlines Logo
1:15 pm - 9:55 am
KTM
-
SEA
34h 25m
2 stops
Multiple Airlines Logo
12:30 pm - 12:15 pm
SEA
-
KTM
34h 00m
2 stops
$1,264Multiple Airlines
Wed, Feb 18 - Wed, Feb 25
Multiple Airlines Logo
10:55 pm - 7:10 pm
KTM
-
SEA
33h 00m
2 stops
Multiple Airlines Logo
1:10 am - 9:45 pm
SEA
-
KTM
31h 50m
2 stops
$1,266Multiple Airlines
Tue, Mar 24 - Sat, Mar 28
Multiple Airlines Logo
10:55 pm - 6:30 pm
KTM
-
SEA
32h 20m
2 stops
Multiple Airlines Logo
1:30 am - 9:45 pm
SEA
-
KTM
31h 30m
2 stops
$1,267Multiple Airlines
Mon, Mar 16 - Tue, Sep 15
Qatar Airways Logo
5:40 pm - 12:40 pm
KTM
-
SEA
31h 45m
1 stop
Qatar Airways Logo
11:31 am - 8:50 am
SEA
-
KTM
32h 34m
2 stops
$1,272Qatar Airways
Tue, Mar 24 - Tue, Sep 15

Cathay Pacific flights from Kathmandu to Seattle

Our best Cathay Pacific deals on Kathmandu to Seattle flight tickets
Cathay Pacific
Jun 22
KTM11:00 pmKathmandu Tribhuvan
24h 20m
1 stop
SEA10:35 amSeattle/Tacoma Intl
Jul 14
SEA12:15 pmSeattle/Tacoma Intl
20h 45m
1 stop
KTM9:45 pmKathmandu Tribhuvan
$1,218
Cathay Pacific
Jun 21
KTM11:00 pmKathmandu Tribhuvan
24h 20m
1 stop
SEA10:35 amSeattle/Tacoma Intl
Jul 14
SEA12:15 pmSeattle/Tacoma Intl
20h 45m
1 stop
KTM9:45 pmKathmandu Tribhuvan
$1,298
Cathay Pacific
Jun 19
KTM11:00 pmKathmandu Tribhuvan
24h 20m
1 stop
SEA10:35 amSeattle/Tacoma Intl
Jul 16
SEA12:15 pmSeattle/Tacoma Intl
20h 45m
1 stop
KTM9:45 pmKathmandu Tribhuvan
$1,320

Turkish Airlines flights from Kathmandu to Seattle

Our best Turkish Airlines deals on Kathmandu to Seattle flight tickets
Turkish Airlines
Mar 16
KTM12:35 pmKathmandu Tribhuvan
42h 15m
1 stop
SEA6:05 pmSeattle/Tacoma Intl
Sep 16
SEA7:10 pmSeattle/Tacoma Intl
22h 10m
1 stop
KTM6:05 amKathmandu Tribhuvan
$1,329
Turkish Airlines
Jun 19
KTM7:30 amKathmandu Tribhuvan
39h 55m
1 stop
SEA10:40 amSeattle/Tacoma Intl
Jul 17
SEA7:10 pmSeattle/Tacoma Intl
22h 10m
1 stop
KTM6:05 amKathmandu Tribhuvan
$1,494
Turkish Airlines
Jun 21
KTM7:30 amKathmandu Tribhuvan
22h 30m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
Jul 12
SEA7:10 pmSeattle/Tacoma Intl
22h 10m
1 stop
KTM6:05 amKathmandu Tribhuvan
$1,524

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 January 21, 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

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Mon 6/22

11:00 pm-2:22 pm

2 stops28h 07m

Seattle/Tacoma Intl

Tue 7/14

9:55 am-9:45 pm

2 stops47h 05m

$1,055

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 3/24

7:20 pm-10:00 am

1 stop27h 25m

Seattle/Tacoma Intl

Sun 3/29

12:50 pm-4:50 pm

1 stop39h 15m

$1,164

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 6/20

7:20 pm-10:50 am

1 stop28h 15m

Seattle/Tacoma Intl

Sun 7/12

1:20 pm-4:50 pm

1 stop38h 45m

$1,189

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Mon 6/22

11:00 pm-10:35 am

1 stop24h 20m

Seattle/Tacoma Intl

Tue 7/14

12:15 pm-9:45 pm

1 stop20h 45m

$1,218

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 2/12

5:40 pm-11:40 am

1 stop31h 45m

Seattle/Tacoma Intl

Wed 8/12

4:25 pm-8:50 am

1 stop27h 40m

$1,258

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 2/18

9:10 am-11:40 am

1 stop40h 15m

Seattle/Tacoma Intl

Wed 2/25

4:05 pm-7:55 am

1 stop26h 05m

$1,261

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 2/18

1:15 pm-9:55 am

2 stops34h 25m

Seattle/Tacoma Intl

Wed 2/25

12:30 pm-12:15 pm

2 stops34h 00m

$1,264

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 3/24

10:55 pm-7:10 pm

2 stops33h 00m

Seattle/Tacoma Intl

Sat 3/28

1:10 am-9:45 pm

2 stops31h 50m

$1,266

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Mon 3/16

10:55 pm-6:30 pm

2 stops32h 20m

Seattle/Tacoma Intl

Tue 9/15

1:30 am-9:45 pm

2 stops31h 30m

$1,267

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 3/24

5:40 pm-12:40 pm

1 stop31h 45m

Seattle/Tacoma Intl

Tue 9/15

11:31 am-8:50 am

2 stops32h 34m

$1,272

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 January 2026, prices for Kathmandu to Seattle flights are approximately 4% 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

  • 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
Turkish AirlinesPriceFrom $941Free CancellationRating
7.3
4,201 reviews
Search Turkish Airlines flights
Singapore AirlinesPriceFrom $1,102Free CancellationRating
8.1
1,434 reviews
Search Singapore Airlines flights
EmiratesPriceFrom $1,717Free CancellationRating
8.1
3,484 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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