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Cheap flights from Kathmandu to Seattle from $731

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 9/1. 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.
Korean Air Logo
7:20 pm - 11:00 am
KTM
-
SEA
28h 25m
1 stop
Korean Air Logo
11:00 am - 5:45 pm
SEA
-
KTM
41h 00m
1 stop
$1,361Korean Air
Sat, Jul 18 - Thu, Jan 14
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
60h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 12:50 pm
SEA
-
KTM
30h 50m
2 stops
$1,368Multiple Airlines
Wed, Jun 24 - Tue, Jul 28
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
60h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 9:45 am
SEA
-
KTM
27h 45m
1 stop
$1,406Multiple Airlines
Wed, Jun 24 - Tue, Jul 28
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
60h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 12:50 pm
SEA
-
KTM
54h 50m
2 stops
$1,440Multiple Airlines
Mon, Jun 29 - Sat, Aug 15
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
$1,450Multiple Airlines
Mon, Jun 29 - Sat, Aug 15
Korean Air Logo
7:20 pm - 11:00 am
KTM
-
SEA
28h 25m
1 stop
Korean Air Logo
1:00 pm - 5:45 pm
SEA
-
KTM
39h 00m
1 stop
$1,452Korean Air
Sat, Jul 18 - Sun, Jan 10
Multiple Airlines Logo
8:10 am - 1:25 pm
KTM
-
SEA
42h 00m
2 stops
Multiple Airlines Logo
8:45 am - 9:50 pm
SEA
-
KTM
23h 20m
1 stop
$1,488Multiple Airlines
Tue, Jul 21 - Tue, Jan 12
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
4:05 pm - 11:45 pm
SEA
-
KTM
41h 55m
1 stop
$1,499Multiple Airlines
Wed, Jul 1 - Wed, Dec 2
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
$1,508Multiple Airlines
Tue, Jul 21 - Wed, Jan 13
Multiple Airlines Logo
11:05 am - 12:25 pm
KTM
-
SEA
38h 05m
1 stop
Multiple Airlines Logo
4:05 pm - 8:20 am
SEA
-
KTM
26h 30m
1 stop
$1,519Multiple Airlines
Fri, Jul 3 - Fri, Nov 27

Korean Air flights from Kathmandu to Seattle

Our best Korean Air deals on Kathmandu to Seattle flight tickets
Korean Air
Jul 18
KTM7:20 pmKathmandu Tribhuvan
28h 25m
1 stop
SEA11:00 amSeattle/Tacoma Intl
Jan 14
SEA11:00 amSeattle/Tacoma Intl
41h 00m
1 stop
KTM5:45 pmKathmandu Tribhuvan
$1,361
Korean Air
Jul 18
KTM7:20 pmKathmandu Tribhuvan
28h 25m
1 stop
SEA11:00 amSeattle/Tacoma Intl
Jan 10
SEA1:00 pmSeattle/Tacoma Intl
39h 00m
1 stop
KTM5:45 pmKathmandu Tribhuvan
$1,452
Korean Air
Jul 21
KTM7:20 pmKathmandu Tribhuvan
28h 25m
1 stop
SEA11:00 amSeattle/Tacoma Intl
Jan 17
SEA11:00 amSeattle/Tacoma Intl
41h 00m
1 stop
KTM5:45 pmKathmandu Tribhuvan
$1,548

Emirates flights from Kathmandu to Seattle

Our best Emirates deals on Kathmandu to Seattle flight tickets
Emirates
Aug 1
KTM9:05 amKathmandu Tribhuvan
41h 05m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Dec 30
SEA4:05 pmSeattle/Tacoma Intl
26h 30m
1 stop
KTM8:20 amKathmandu Tribhuvan
$1,607
Emirates
Jul 22
KTM12:35 amKathmandu Tribhuvan
25h 35m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Jan 14
SEA4:05 pmSeattle/Tacoma Intl
41h 55m
1 stop
KTM11:45 pmKathmandu Tribhuvan
$1,644
Emirates
Jul 24
KTM12:35 amKathmandu Tribhuvan
25h 35m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Jan 15
SEA4:05 pmSeattle/Tacoma Intl
26h 30m
1 stop
KTM8:20 amKathmandu Tribhuvan
$1,669

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 28, 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

Sat 7/18

7:20 pm-11:00 am

1 stop28h 25m

Seattle/Tacoma Intl

Thu 1/14

11:00 am-5:45 pm

1 stop41h 00m

$1,361

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 6/24

1:25 pm-1:25 pm

2 stops60h 45m

Seattle/Tacoma Intl

Tue 7/28

5:15 pm-12:50 pm

2 stops30h 50m

$1,368

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 6/24

1:25 pm-1:25 pm

2 stops60h 45m

Seattle/Tacoma Intl

Tue 7/28

5:15 pm-9:45 am

1 stop27h 45m

$1,406

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Mon 6/29

1:25 pm-1:25 pm

2 stops60h 45m

Seattle/Tacoma Intl

Sat 8/15

5:15 pm-12:50 pm

2 stops54h 50m

$1,440

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Mon 6/29

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Sat 8/15

5:15 pm-12:50 pm

2 stops54h 50m

$1,450

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 7/18

7:20 pm-11:00 am

1 stop28h 25m

Seattle/Tacoma Intl

Sun 1/10

1:00 pm-5:45 pm

1 stop39h 00m

$1,452

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 7/21

8:10 am-1:25 pm

2 stops42h 00m

Seattle/Tacoma Intl

Tue 1/12

8:45 am-9:50 pm

1 stop23h 20m

$1,488

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 7/1

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Wed 12/2

4:05 pm-11:45 pm

1 stop41h 55m

$1,499

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 7/21

8:10 am-1:25 pm

2 stops42h 00m

Seattle/Tacoma Intl

Wed 1/13

4:05 pm-8:20 am

1 stop26h 30m

$1,508
Quickest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 7/3

11:05 am-12:25 pm

1 stop38h 05m

Seattle/Tacoma Intl

Fri 11/27

4:05 pm-8:20 am

1 stop26h 30m

$1,519

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 4% 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

24h 05m

Direct flights

None
The fastest flight from Kathmandu to Seattle takes 24h 05m
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 24h 05m, 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
1,523 reviews
Search Singapore Airlines 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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