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Cheap flights from Kathmandu to Seattle from $692

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 6/9. 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.
Korean Air Logo
7:20 pm - 11:00 am
KTM
-
SEA
28h 25m
1 stop
Korean Air Logo
12:50 pm - 5:15 pm
SEA
-
KTM
39h 40m
1 stop
$1,337Korean Air
Tue, Jul 7 - Thu, Oct 22
Qatar Airways Logo
3:30 pm - 2:45 pm
KTM
-
SEA
36h 00m
1 stop
Qatar Airways Logo
4:25 pm - 9:50 am
SEA
-
KTM
28h 40m
1 stop
$1,360Qatar Airways
Fri, Jun 5 - Wed, Jun 17
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
54h 50m
2 stops
$1,417Multiple Airlines
Sun, Aug 2 - Mon, Aug 24
Multiple Airlines Logo
6:00 pm - 2:45 pm
KTM
-
SEA
33h 30m
1 stop
Multiple Airlines Logo
4:25 pm - 5:00 pm
SEA
-
KTM
35h 50m
2 stops
$1,480Multiple Airlines
Fri, Jun 5 - Wed, Jun 17
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
$1,501Multiple Airlines
Tue, Jul 7 - Tue, Oct 20
Multiple Airlines Logo
8:10 am - 1:25 pm
KTM
-
SEA
42h 00m
2 stops
Multiple Airlines Logo
4:05 pm - 6:40 pm
SEA
-
KTM
36h 50m
1 stop
$1,525Multiple Airlines
Tue, Aug 11 - Mon, Jan 11
Korean Air Logo
7:20 pm - 11:00 am
KTM
-
SEA
28h 25m
1 stop
Korean Air Logo
12:35 pm - 5:15 pm
SEA
-
KTM
39h 55m
1 stop
$1,527Korean Air
Tue, Jun 30 - Thu, Oct 8
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 8:05 am
SEA
-
KTM
26h 05m
1 stop
$1,536Multiple Airlines
Sun, Aug 2 - Mon, Aug 24
Multiple Airlines Logo
12:25 am - 7:10 pm
KTM
-
SEA
31h 30m
2 stops
Multiple Airlines Logo
12:10 am - 9:30 pm
SEA
-
KTM
31h 35m
2 stops
$1,541Multiple Airlines
Tue, Oct 27 - Sat, Nov 14
Multiple Airlines Logo
8:10 am - 1:25 pm
KTM
-
SEA
42h 00m
2 stops
Multiple Airlines Logo
4:05 pm - 8:20 am
SEA
-
KTM
26h 30m
1 stop
$1,544Multiple Airlines
Sat, Aug 1 - Wed, Dec 30

Korean Air flights from Kathmandu to Seattle

Our best Korean Air deals on Kathmandu to Seattle flight tickets
Korean Air
Jul 7
KTM7:20 pmKathmandu Tribhuvan
28h 25m
1 stop
SEA11:00 amSeattle/Tacoma Intl
Oct 22
SEA12:50 pmSeattle/Tacoma Intl
39h 40m
1 stop
KTM5:15 pmKathmandu Tribhuvan
$1,337
Korean Air
Jun 30
KTM7:20 pmKathmandu Tribhuvan
28h 25m
1 stop
SEA11:00 amSeattle/Tacoma Intl
Oct 8
SEA12:35 pmSeattle/Tacoma Intl
39h 55m
1 stop
KTM5:15 pmKathmandu Tribhuvan
$1,527
Korean Air
May 19
KTM7:20 pmKathmandu Tribhuvan
28h 05m
1 stop
SEA10:40 amSeattle/Tacoma Intl
Nov 5
SEA11:00 amSeattle/Tacoma Intl
41h 00m
1 stop
KTM5:45 pmKathmandu Tribhuvan
$1,572

Qatar Airways flights from Kathmandu to Seattle

Our best Qatar Airways deals on Kathmandu to Seattle flight tickets
Qatar Airways
May 19
KTM10:00 amKathmandu Tribhuvan
59h 31m
2 stops
SEA8:46 amSeattle/Tacoma Intl
Nov 14
SEA4:05 pmSeattle/Tacoma Intl
35h 40m
1 stop
KTM5:30 pmKathmandu Tribhuvan
$1,356
Qatar Airways
Jun 5
KTM3:30 pmKathmandu Tribhuvan
36h 00m
1 stop
SEA2:45 pmSeattle/Tacoma Intl
Jun 17
SEA4:25 pmSeattle/Tacoma Intl
28h 40m
1 stop
KTM9:50 amKathmandu Tribhuvan
$1,360
Qatar Airways
May 19
KTM10:00 amKathmandu Tribhuvan
71h 14m
2 stops
SEA8:29 pmSeattle/Tacoma Intl
Nov 17
SEA4:05 pmSeattle/Tacoma Intl
34h 35m
1 stop
KTM4:25 pmKathmandu Tribhuvan
$1,396

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 May 16, 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 7/7

7:20 pm-11:00 am

1 stop28h 25m

Seattle/Tacoma Intl

Thu 10/22

12:50 pm-5:15 pm

1 stop39h 40m

$1,337

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 6/5

3:30 pm-2:45 pm

1 stop36h 00m

Seattle/Tacoma Intl

Wed 6/17

4:25 pm-9:50 am

1 stop28h 40m

$1,360

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sun 8/2

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Mon 8/24

5:15 pm-12:50 pm

2 stops54h 50m

$1,417

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 6/5

6:00 pm-2:45 pm

1 stop33h 30m

Seattle/Tacoma Intl

Wed 6/17

4:25 pm-5:00 pm

2 stops35h 50m

$1,480

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 7/7

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Tue 10/20

5:15 pm-6:10 pm

2 stops36h 10m

$1,501

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 8/11

8:10 am-1:25 pm

2 stops42h 00m

Seattle/Tacoma Intl

Mon 1/11

4:05 pm-6:40 pm

1 stop36h 50m

$1,525

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 6/30

7:20 pm-11:00 am

1 stop28h 25m

Seattle/Tacoma Intl

Thu 10/8

12:35 pm-5:15 pm

1 stop39h 55m

$1,527
Quickest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sun 8/2

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Mon 8/24

5:15 pm-8:05 am

1 stop26h 05m

$1,536

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 10/27

12:25 am-7:10 pm

2 stops31h 30m

Seattle/Tacoma Intl

Sat 11/14

12:10 am-9:30 pm

2 stops31h 35m

$1,541

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 8/1

8:10 am-1:25 pm

2 stops42h 00m

Seattle/Tacoma Intl

Wed 12/30

4:05 pm-8:20 am

1 stop26h 30m

$1,544

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?

What is the cheapest month to fly to Seattle?

In general, October is the cheapest month to fly from Kathmandu to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Seattle in October, then you should wait until January to fly from Kathmandu, when ticket prices are also cheap, with an average price of $0.

Can stopping save me money on Kathmandu to Seattle flights?

You could potentially save up to 3% 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 May 2026, prices for Kathmandu to Seattle flights are approximately 7% cheaper 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 $1,106Free CancellationRating
8.2
1,517 reviews
Search Singapore Airlines 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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