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Cheap flights from Kathmandu to Seattle from $595

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 5/12. 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
10:55 pm - 7:16 pm
KTM
-
SEA
34h 06m
2 stops
Multiple Airlines Logo
7:20 pm - 9:45 pm
SEA
-
KTM
37h 40m
2 stops
$1,120Multiple Airlines
Tue, Jan 27 - Sun, Jul 26
Multiple Airlines Logo
5:10 pm - 11:40 am
KTM
-
SEA
56h 15m
2 stops
Multiple Airlines Logo
4:05 pm - 4:10 pm
SEA
-
KTM
34h 20m
2 stops
$1,189Multiple Airlines
Fri, Jan 30 - Sat, Feb 7
Korean Air Logo
7:20 pm - 9:00 am
KTM
-
SEA
27h 25m
1 stop
Korean Air Logo
1:20 pm - 4:50 pm
SEA
-
KTM
38h 45m
1 stop
$1,191Korean Air
Tue, Jan 27 - Sun, Jul 26
Multiple Airlines Logo
11:00 pm - 7:30 pm
KTM
-
SEA
33h 15m
2 stops
Multiple Airlines Logo
1:10 am - 9:45 pm
SEA
-
KTM
31h 50m
2 stops
$1,205Multiple Airlines
Wed, Jun 3 - Thu, Jul 2
Singapore Airlines Logo
10:50 pm - 8:45 am
KTM
-
SEA
46h 40m
1 stop
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,228Singapore Airlines
Wed, Jun 3 - Fri, Jul 3
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
$1,252Singapore Airlines
Thu, Jun 4 - Fri, Jul 3
Qatar Airways Logo
7:05 pm - 11:40 am
KTM
-
SEA
30h 20m
1 stop
Qatar Airways Logo
4:05 pm - 7:55 am
SEA
-
KTM
26h 05m
1 stop
$1,261Qatar Airways
Thu, Feb 12 - Thu, Feb 19
Qatar Airways Logo
5:40 pm - 6:58 pm
KTM
-
SEA
39h 03m
2 stops
Qatar Airways Logo
4:05 pm - 7:55 am
SEA
-
KTM
26h 05m
1 stop
$1,268Qatar Airways
Thu, Feb 12 - Thu, Feb 19
Qatar Airways Logo
5:40 pm - 11:40 am
KTM
-
SEA
31h 45m
1 stop
Qatar Airways Logo
4:05 pm - 4:25 pm
SEA
-
KTM
34h 35m
1 stop
$1,287Qatar Airways
Fri, Jan 30 - Sat, Feb 7
Singapore Airlines Logo
10:50 pm - 8:45 am
KTM
-
SEA
46h 40m
1 stop
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,288Singapore Airlines
Fri, Jun 5 - Fri, Jul 3

Korean Air flights from Kathmandu to Seattle

Our best Korean Air deals on Kathmandu to Seattle flight tickets
Korean Air
Jan 27
KTM7:20 pmKathmandu Tribhuvan
27h 25m
1 stop
SEA9:00 amSeattle/Tacoma Intl
Jul 26
SEA1:20 pmSeattle/Tacoma Intl
38h 45m
1 stop
KTM4:50 pmKathmandu Tribhuvan
$1,191
Korean Air
May 16
KTM7:20 pmKathmandu Tribhuvan
30h 36m
1 stop
SEA1:11 pmSeattle/Tacoma Intl
Jun 14
SEA1:20 pmSeattle/Tacoma Intl
38h 45m
1 stop
KTM4:50 pmKathmandu Tribhuvan
$4,226
Korean Air
May 19
KTM7:20 pmKathmandu Tribhuvan
30h 36m
1 stop
SEA1:11 pmSeattle/Tacoma Intl
Jun 18
SEA1:20 pmSeattle/Tacoma Intl
38h 45m
1 stop
KTM4:50 pmKathmandu Tribhuvan
$5,172

Singapore Airlines flights from Kathmandu to Seattle

Our best Singapore Airlines deals on Kathmandu to Seattle flight tickets
Singapore Airlines
Jun 3
KTM10:50 pmKathmandu Tribhuvan
46h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Jul 3
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
$1,228
Singapore Airlines
Jun 4
KTM10:50 pmKathmandu Tribhuvan
22h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Jul 3
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
$1,252
Singapore Airlines
Jun 5
KTM10:50 pmKathmandu Tribhuvan
46h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Jul 3
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
$1,288

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 14, 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 1/27

10:55 pm-7:16 pm

2 stops34h 06m

Seattle/Tacoma Intl

Sun 7/26

7:20 pm-9:45 pm

2 stops37h 40m

$1,120

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 1/30

5:10 pm-11:40 am

2 stops56h 15m

Seattle/Tacoma Intl

Sat 2/7

4:05 pm-4:10 pm

2 stops34h 20m

$1,189

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 1/27

7:20 pm-9:00 am

1 stop27h 25m

Seattle/Tacoma Intl

Sun 7/26

1:20 pm-4:50 pm

1 stop38h 45m

$1,191

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 6/3

11:00 pm-7:30 pm

2 stops33h 15m

Seattle/Tacoma Intl

Thu 7/2

1:10 am-9:45 pm

2 stops31h 50m

$1,205

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 6/3

10:50 pm-8:45 am

1 stop46h 40m

Seattle/Tacoma Intl

Fri 7/3

10:15 am-9:30 pm

1 stop22h 30m

$1,228

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 6/4

10:50 pm-8:45 am

1 stop22h 40m

Seattle/Tacoma Intl

Fri 7/3

10:15 am-9:30 pm

1 stop22h 30m

$1,252

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 2/12

7:05 pm-11:40 am

1 stop30h 20m

Seattle/Tacoma Intl

Thu 2/19

4:05 pm-7:55 am

1 stop26h 05m

$1,261

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 2/12

5:40 pm-6:58 pm

2 stops39h 03m

Seattle/Tacoma Intl

Thu 2/19

4:05 pm-7:55 am

1 stop26h 05m

$1,268

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 1/30

5:40 pm-11:40 am

1 stop31h 45m

Seattle/Tacoma Intl

Sat 2/7

4:05 pm-4:25 pm

1 stop34h 35m

$1,287

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 6/5

10:50 pm-8:45 am

1 stop46h 40m

Seattle/Tacoma Intl

Fri 7/3

10:15 am-9:30 pm

1 stop22h 30m

$1,288

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

56h 15m

Direct flights

None
The fastest flight from Kathmandu to Seattle takes 56h 15m
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 56h 15m, 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
1,431 reviews
Search Singapore Airlines flights
Korean AirPriceFrom $1,191Free CancellationRating
8.4
1,187 reviews
Search Korean Air flights
Turkish AirlinesPriceFrom $1,313Free CancellationRating
7.3
4,167 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,717Free CancellationRating
8.1
3,466 reviews
Search Emirates flights

Traveling to a place near Seattle?

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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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