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Cheap flights from Kathmandu to Seattle from $593

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 6/7. 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.
Multiple Airlines Logo
8:50 pm - 3:15 pm
KTM
-
SEA
55h 10m
2 stops
Multiple Airlines Logo
12:10 am - 9:50 am
SEA
-
KTM
44h 55m
2 stops
$1,221Multiple Airlines
Wed, Jun 17 - Tue, Jun 23
Korean Air Logo
7:20 pm - 10:40 am
KTM
-
SEA
28h 05m
1 stop
Korean Air Logo
12:50 pm - 5:15 pm
SEA
-
KTM
39h 40m
1 stop
$1,277Korean Air
Tue, Sep 8 - Thu, Oct 8
Multiple Airlines Logo
10:45 am - 2:45 pm
KTM
-
SEA
40h 45m
1 stop
Multiple Airlines Logo
4:25 pm - 8:50 am
SEA
-
KTM
27h 40m
1 stop
$1,308Multiple Airlines
Tue, Jun 2 - Tue, Sep 1
Qatar Airways Logo
10:45 am - 2:45 pm
KTM
-
SEA
40h 45m
1 stop
Qatar Airways Logo
4:25 pm - 4:45 pm
SEA
-
KTM
35h 35m
1 stop
$1,323Qatar Airways
Tue, Jun 2 - Sat, Oct 10
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
$1,332Multiple Airlines
Tue, Sep 29 - Tue, Oct 20
Qatar Airways Logo
10:45 am - 2:45 pm
KTM
-
SEA
40h 45m
1 stop
Qatar Airways Logo
10:40 am - 8:50 am
SEA
-
KTM
33h 25m
2 stops
$1,339Qatar Airways
Tue, Jun 2 - Tue, Sep 1
Multiple Airlines Logo
6:30 am - 10:41 pm
KTM
-
SEA
28h 56m
3 stops
Multiple Airlines Logo
4:36 pm - 8:55 am
SEA
-
KTM
27h 34m
3 stops
$1,347Multiple Airlines
Tue, Jun 30 - Tue, Jul 21
Multiple Airlines Logo
4:40 pm - 12:25 pm
KTM
-
SEA
56h 30m
2 stops
Multiple Airlines Logo
4:25 pm - 2:10 pm
SEA
-
KTM
57h 00m
3 stops
$1,352Multiple Airlines
Wed, Jun 17 - Wed, Jun 24
Multiple Airlines Logo
8:10 am - 1:25 pm
KTM
-
SEA
42h 00m
2 stops
Multiple Airlines Logo
5:15 pm - 6:10 pm
SEA
-
KTM
36h 10m
2 stops
$1,356Multiple Airlines
Tue, Jun 30 - Tue, Jul 21
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
$1,360Multiple Airlines
Tue, Sep 8 - Fri, Oct 9

Korean Air flights from Kathmandu to Seattle

Our best Korean Air deals on Kathmandu to Seattle flight tickets
Korean Air
Sep 8
KTM7:20 pmKathmandu Tribhuvan
28h 05m
1 stop
SEA10:40 amSeattle/Tacoma Intl
Oct 8
SEA12:50 pmSeattle/Tacoma Intl
39h 40m
1 stop
KTM5:15 pmKathmandu Tribhuvan
$1,277
Korean Air
Oct 3
KTM7:20 pmKathmandu Tribhuvan
28h 05m
1 stop
SEA10:40 amSeattle/Tacoma Intl
Oct 22
SEA12:50 pmSeattle/Tacoma Intl
39h 40m
1 stop
KTM5:15 pmKathmandu Tribhuvan
$1,371
Korean Air
Sep 8
KTM7:20 pmKathmandu Tribhuvan
28h 05m
1 stop
SEA10:40 amSeattle/Tacoma Intl
Oct 11
SEA12:35 pmSeattle/Tacoma Intl
39h 55m
1 stop
KTM5:15 pmKathmandu Tribhuvan
$1,457

Qatar Airways flights from Kathmandu to Seattle

Our best Qatar Airways deals on Kathmandu to Seattle flight tickets
Qatar Airways
Jun 2
KTM10:45 amKathmandu Tribhuvan
40h 45m
1 stop
SEA2:45 pmSeattle/Tacoma Intl
Oct 10
SEA4:25 pmSeattle/Tacoma Intl
35h 35m
1 stop
KTM4:45 pmKathmandu Tribhuvan
$1,323
Qatar Airways
Jun 2
KTM10:45 amKathmandu Tribhuvan
40h 45m
1 stop
SEA2:45 pmSeattle/Tacoma Intl
Sep 1
SEA10:40 amSeattle/Tacoma Intl
33h 25m
2 stops
KTM8:50 amKathmandu Tribhuvan
$1,339
Qatar Airways
Jun 13
KTM7:10 pmKathmandu Tribhuvan
32h 20m
1 stop
SEA2:45 pmSeattle/Tacoma Intl
Jun 20
SEA4:25 pmSeattle/Tacoma Intl
27h 40m
1 stop
KTM8:50 amKathmandu Tribhuvan
$1,383

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 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

Cheapest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 6/17

8:50 pm-3:15 pm

2 stops55h 10m

Seattle/Tacoma Intl

Tue 6/23

12:10 am-9:50 am

2 stops44h 55m

$1,221

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 9/8

7:20 pm-10:40 am

1 stop28h 05m

Seattle/Tacoma Intl

Thu 10/8

12:50 pm-5:15 pm

1 stop39h 40m

$1,277

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 6/2

10:45 am-2:45 pm

1 stop40h 45m

Seattle/Tacoma Intl

Tue 9/1

4:25 pm-8:50 am

1 stop27h 40m

$1,308

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 6/2

10:45 am-2:45 pm

1 stop40h 45m

Seattle/Tacoma Intl

Sat 10/10

4:25 pm-4:45 pm

1 stop35h 35m

$1,323

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 9/29

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Tue 10/20

5:15 pm-6:10 pm

2 stops36h 10m

$1,332

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 6/2

10:45 am-2:45 pm

1 stop40h 45m

Seattle/Tacoma Intl

Tue 9/1

10:40 am-8:50 am

2 stops33h 25m

$1,339
Quickest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 6/30

6:30 am-10:41 pm

3 stops28h 56m

Seattle/Tacoma Intl

Tue 7/21

4:36 pm-8:55 am

3 stops27h 34m

$1,347

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 6/17

4:40 pm-12:25 pm

2 stops56h 30m

Seattle/Tacoma Intl

Wed 6/24

4:25 pm-2:10 pm

3 stops57h 00m

$1,352

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 6/30

8:10 am-1:25 pm

2 stops42h 00m

Seattle/Tacoma Intl

Tue 7/21

5:15 pm-6:10 pm

2 stops36h 10m

$1,356

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 9/8

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Fri 10/9

5:15 pm-6:10 pm

2 stops36h 10m

$1,360

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 6% 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 6% 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
1,506 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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