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Cheap flights from Kathmandu to Seattle from $617

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 2/3. 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.
Multiple Airlines Logo
11:00 pm - 9:17 am
KTM
-
SEA
23h 02m2 stops
Multiple Airlines Logo
7:20 pm - 9:45 pm
SEA
-
KTM
37h 40m2 stops
$989Multiple Airlines
Tue, Jul 7 - Sat, Jul 11
Korean Air Logo
7:20 pm - 9:00 am
KTM
-
SEA
27h 25m1 stop
Korean Air Logo
12:50 pm - 4:50 pm
SEA
-
KTM
39h 15m1 stop
$1,190Korean Air
Tue, Jan 27 - Thu, Apr 30
Singapore Airlines Logo
10:50 pm - 8:45 am
KTM
-
SEA
46h 40m1 stop
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
46h 30m1 stop
$1,263Singapore Airlines
Tue, Jul 7 - Sat, Jul 11
KLM Logo
5:10 pm - 11:50 am
KTM
-
SEA
32h 25m2 stops
KLM Logo
1:45 pm - 2:05 pm
SEA
-
KTM
35h 35m2 stops
$1,294KLM
Tue, Jan 27 - Thu, Apr 30
Multiple Airlines Logo
10:50 am - 12:35 pm
KTM
-
SEA
39h 30m2 stops
Multiple Airlines Logo
5:05 pm - 9:50 am
SEA
-
KTM
28h 00m2 stops
$1,313Multiple Airlines
Wed, Feb 18 - Thu, Mar 12
Qatar Airways Logo
9:10 am - 4:42 pm
KTM
-
SEA
45h 17m2 stops
Qatar Airways Logo
4:30 pm - 7:55 am
SEA
-
KTM
26h 40m1 stop
$1,319Qatar Airways
Tue, Jan 27 - Thu, Apr 30
Singapore Airlines Logo
11:00 pm - 7:10 am
KTM
-
SEA
45h 55m1 stop
Singapore Airlines Logo
9:45 am - 9:50 pm
SEA
-
KTM
47h 20m1 stop
$1,341Singapore Airlines
Wed, Feb 18 - Thu, Mar 12
Turkish Airlines Logo
12:35 pm - 5:05 pm
KTM
-
SEA
42h 15m1 stop
Turkish Airlines Logo
7:00 pm - 11:10 am
SEA
-
KTM
26h 25m1 stop
$1,369Turkish Airlines
Sun, Feb 22 - Sun, Mar 1
Multiple Airlines Logo
1:45 pm - 12:35 pm
KTM
-
SEA
60h 35m2 stops
Multiple Airlines Logo
4:05 pm - 6:35 pm
SEA
-
KTM
36h 45m2 stops
$1,378Multiple Airlines
Sun, Feb 22 - Sun, Mar 1
Multiple Airlines Logo
12:35 pm - 5:05 pm
KTM
-
SEA
42h 15m1 stop
Multiple Airlines Logo
8:15 am - 4:25 pm
SEA
-
KTM
43h 25m2 stops
$1,397Multiple Airlines
Wed, Feb 18 - Thu, Mar 12

Singapore Airlines flights from Kathmandu to Seattle

Our best Singapore Airlines deals on Kathmandu to Seattle flight tickets
Singapore Airlines
Jul 7
KTM10:50 pmKathmandu Tribhuvan
46h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Jul 11
SEA10:15 amSeattle/Tacoma Intl
46h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
$1,263
Singapore Airlines
Feb 18
KTM11:00 pmKathmandu Tribhuvan
45h 55m
1 stop
SEA7:10 amSeattle/Tacoma Intl
Mar 12
SEA9:45 amSeattle/Tacoma Intl
47h 20m
1 stop
KTM9:50 pmKathmandu Tribhuvan
$1,341

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 8, 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

Tue 7/7

11:00 pm-9:17 am

2 stops23h 02m

Seattle/Tacoma Intl

Sat 7/11

7:20 pm-9:45 pm

2 stops37h 40m

$989

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 7/7

10:50 pm-8:45 am

1 stop46h 40m

Seattle/Tacoma Intl

Sat 7/11

10:15 am-9:30 pm

1 stop46h 30m

$1,263

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

Wed 2/18

10:50 am-12:35 pm

2 stops39h 30m

Seattle/Tacoma Intl

Thu 3/12

5:05 pm-9:50 am

2 stops28h 00m

$1,313

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

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

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

23h 02m

Direct flights

None
The fastest flight from Kathmandu to Seattle takes 23h 02m
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 23h 02m, 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 $1,103Free CancellationRating
8.1
1,429 reviews
Search Singapore Airlines flights
Korean AirPriceFrom $1,191Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
Turkish AirlinesPriceFrom $1,313Free CancellationRating
7.3
4,150 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,717Free CancellationRating
8.1
3,462 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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