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Cheap flights from Kathmandu to Seattle from $574

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 6/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
Singapore Airlines Logo
11:05 pm - 8:10 am
KTM
-
SEA
45h 50m
1 stop
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,160Singapore Airlines
Wed, Mar 18 - Sun, Apr 5
Singapore Airlines Logo
11:05 pm - 8:10 am
KTM
-
SEA
45h 50m
1 stop
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,167Singapore Airlines
Wed, Mar 18 - Sun, Apr 5
Singapore Airlines Logo
11:00 pm - 8:10 am
KTM
-
SEA
45h 55m
1 stop
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
46h 30m
1 stop
$1,196Singapore Airlines
Thu, Mar 19 - Sun, Sep 13
Multiple Airlines Logo
12:25 am - 7:10 pm
KTM
-
SEA
31h 30m
2 stops
Multiple Airlines Logo
1:30 am - 9:45 pm
SEA
-
KTM
31h 30m
2 stops
$1,273Multiple Airlines
Tue, Mar 17 - Sat, Apr 4
Multiple Airlines Logo
12:25 am - 7:10 pm
KTM
-
SEA
31h 30m
2 stops
Multiple Airlines Logo
1:30 am - 9:45 pm
SEA
-
KTM
31h 30m
2 stops
$1,279Multiple Airlines
Tue, Mar 17 - Sat, Apr 4
Multiple Airlines Logo
1:45 pm - 1:35 pm
KTM
-
SEA
36h 35m
2 stops
Multiple Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,287Multiple Airlines
Thu, Mar 19 - Sun, Sep 13
Multiple Airlines Logo
12:25 am - 7:10 pm
KTM
-
SEA
31h 30m
3 stops
Multiple Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,307Multiple Airlines
Wed, Mar 18 - Sun, Sep 13
Multiple Airlines Logo
12:25 am - 6:10 pm
KTM
-
SEA
31h 30m
2 stops
Multiple Airlines Logo
1:10 am - 9:30 pm
SEA
-
KTM
31h 35m
2 stops
$1,313Multiple Airlines
Fri, Mar 6 - Sun, Mar 22
Singapore Airlines Logo
10:50 pm - 8:45 am
KTM
-
SEA
22h 40m
1 stop
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,326Singapore Airlines
Thu, Jun 4 - Thu, Jul 2
Multiple Airlines Logo
9:10 am - 11:16 pm
KTM
-
SEA
50h 51m
2 stops
Multiple Airlines Logo
4:25 pm - 4:45 pm
SEA
-
KTM
35h 35m
1 stop
$1,331Multiple Airlines
Wed, Mar 18 - Sun, Apr 5

Singapore Airlines flights from Kathmandu to Seattle

Our best Singapore Airlines deals on Kathmandu to Seattle flight tickets
Singapore Airlines
Mar 18
KTM11:05 pmKathmandu Tribhuvan
45h 50m
1 stop
SEA8:10 amSeattle/Tacoma Intl
Apr 5
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
$1,160
Singapore Airlines
Mar 19
KTM11:00 pmKathmandu Tribhuvan
45h 55m
1 stop
SEA8:10 amSeattle/Tacoma Intl
Sep 13
SEA10:15 amSeattle/Tacoma Intl
46h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
$1,196

Turkish Airlines flights from Kathmandu to Seattle

Our best Turkish Airlines deals on Kathmandu to Seattle flight tickets
Turkish Airlines
Mar 7
KTM12:35 pmKathmandu Tribhuvan
42h 15m
1 stop
SEA5:05 pmSeattle/Tacoma Intl
Mar 23
SEA8:00 pmSeattle/Tacoma Intl
26h 25m
1 stop
KTM11:10 amKathmandu Tribhuvan
$1,332
Turkish Airlines
Feb 14
KTM12:35 pmKathmandu Tribhuvan
42h 15m
1 stop
SEA5:05 pmSeattle/Tacoma Intl
Oct 23
SEA7:10 pmSeattle/Tacoma Intl
22h 20m
1 stop
KTM6:15 amKathmandu Tribhuvan
$1,424
Turkish Airlines
Feb 14
KTM12:35 pmKathmandu Tribhuvan
42h 15m
1 stop
SEA5:05 pmSeattle/Tacoma Intl
Oct 17
SEA7:10 pmSeattle/Tacoma Intl
22h 20m
1 stop
KTM6:15 amKathmandu Tribhuvan
$1,486

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 February 4, 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

Wed 3/18

11:05 pm-8:10 am

1 stop45h 50m

Seattle/Tacoma Intl

Sun 4/5

10:15 am-9:30 pm

1 stop22h 30m

$1,160

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 3/18

11:05 pm-8:10 am

1 stop45h 50m

Seattle/Tacoma Intl

Sun 4/5

10:15 am-9:30 pm

1 stop22h 30m

$1,167

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 3/19

11:00 pm-8:10 am

1 stop45h 55m

Seattle/Tacoma Intl

Sun 9/13

10:15 am-9:30 pm

1 stop46h 30m

$1,196

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 3/17

12:25 am-7:10 pm

2 stops31h 30m

Seattle/Tacoma Intl

Sat 4/4

1:30 am-9:45 pm

2 stops31h 30m

$1,273

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 3/17

12:25 am-7:10 pm

2 stops31h 30m

Seattle/Tacoma Intl

Sat 4/4

1:30 am-9:45 pm

2 stops31h 30m

$1,279

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 3/19

1:45 pm-1:35 pm

2 stops36h 35m

Seattle/Tacoma Intl

Sun 9/13

10:15 am-9:30 pm

1 stop22h 30m

$1,287

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 3/18

12:25 am-7:10 pm

3 stops31h 30m

Seattle/Tacoma Intl

Sun 9/13

10:15 am-9:30 pm

1 stop22h 30m

$1,307

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 3/6

12:25 am-6:10 pm

2 stops31h 30m

Seattle/Tacoma Intl

Sun 3/22

1:10 am-9:30 pm

2 stops31h 35m

$1,313

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 6/4

10:50 pm-8:45 am

1 stop22h 40m

Seattle/Tacoma Intl

Thu 7/2

10:15 am-9:30 pm

1 stop22h 30m

$1,326

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 3/18

9:10 am-11:16 pm

2 stops50h 51m

Seattle/Tacoma Intl

Sun 4/5

4:25 pm-4:45 pm

1 stop35h 35m

$1,331

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 February 2026, prices for Kathmandu to Seattle flights are approximately 5% 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

22h 20m

Direct flights

None
The fastest flight from Kathmandu to Seattle takes 22h 20m
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 22h 20m, 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 $1,102Free CancellationRating
8.2
1,448 reviews
Search Singapore Airlines flights
EmiratesPriceFrom $1,717Free CancellationRating
8.1
3,503 reviews
Search Emirates flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
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Leavenworth
SeaTac
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Olympia
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Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Westport
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Centralia
Fife
Tumwater

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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