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Cheap flights from Kathmandu to Seattle from $571

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Kathmandu to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:40 pm - 2:41 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 46m2 stops New Delhi Indira Gandhi Intl Vancouver Intl
Multiple Airlines Logo
10:41 pm - 8:40 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
33h 14m2 stops New York John F Kennedy Intl New Delhi Indira Gandhi Intl
$1,126Multiple Airlines
Wed, Mar 3 - Thu, Mar 25
Multiple Airlines Logo
11:45 am - 8:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
34h 45m3 stops Chengdu Tianfu Intl Guangzhou Baiyun Hong Kong Intl
Multiple Airlines Logo
8:40 am - 9:50 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
23h 25m1 stop Singapore Changi
$1,420Multiple Airlines
Tue, Nov 24 - Tue, Dec 1
Air India Logo
9:40 pm - 12:57 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
29h 02m2 stops New Delhi Indira Gandhi Intl Vancouver Intl
Air India Logo
3:50 pm - 6:35 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
50h 00m3 stops Vancouver Intl Kolkata Netaji S. Chandra New Delhi Indira Gandhi Intl
$1,446Air India
Wed, Mar 3 - Thu, Mar 25
Multiple Airlines Logo
10:55 pm - 8:05 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
45h 55m1 stop Singapore Changi
Multiple Airlines Logo
4:45 pm - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
40h 00m2 stops San Francisco Singapore Changi
$1,448Multiple Airlines
Thu, Mar 25 - Wed, Aug 11
Multiple Airlines Logo
4:05 pm - 7:05 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
28h 45m2 stops Kunming Changshui Singapore Changi
Multiple Airlines Logo
8:40 am - 9:50 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
23h 25m1 stop Singapore Changi
$1,472Multiple Airlines
Tue, Nov 24 - Tue, Dec 1
Cathay Pacific Logo
10:55 pm - 8:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
23h 35m1 stop Hong Kong Intl
Cathay Pacific Logo
11:25 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
21h 20m1 stop Hong Kong Intl
$1,491Cathay Pacific
Wed, Mar 3 - Thu, Mar 25
Multiple Airlines Logo
1:45 pm - 1:35 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
37h 35m2 stops New Delhi Indira Gandhi Intl Dubai Intl
Multiple Airlines Logo
5:05 pm - 6:40 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
36h 50m1 stop Dubai Intl
$1,518Multiple Airlines
Wed, Mar 3 - Thu, Mar 25
Multiple Airlines Logo
7:25 pm - 9:05 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
27h 25m1 stop Incheon Intl
Multiple Airlines Logo
8:40 am - 9:50 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
23h 25m1 stop Singapore Changi
$1,529Multiple Airlines
Tue, Nov 24 - Tue, Dec 1
Multiple Airlines Logo
12:25 am - 6:40 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 00m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
2:10 am - 11:25 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
32h 30m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
$1,550Multiple Airlines
Wed, Mar 24 - Tue, Aug 10
Turkish Airlines Logo
12:45 pm - 6:10 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
42h 10m1 stop Istanbul
Turkish Airlines Logo
7:15 pm - 6:05 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
22h 05m1 stop Istanbul
$1,611Turkish Airlines
Thu, Mar 25 - Wed, Aug 11

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Air India flights from Kathmandu to Seattle

Our best Air India deals on Kathmandu to Seattle flight tickets
Air India
Mar 3
KTM9:40 pmKathmandu Tribhuvan
29h 02m
2 stops
SEA12:57 pmSeattle/Tacoma Intl
Mar 25
SEA3:50 pmSeattle/Tacoma Intl
50h 00m
3 stops
KTM6:35 amKathmandu Tribhuvan
$1,446
Air India
Oct 22
KTM9:10 pmKathmandu Tribhuvan
28h 31m
2 stops
SEA12:56 pmSeattle/Tacoma Intl
Nov 6
SEA9:39 pmSeattle/Tacoma Intl
45h 41m
3 stops
KTM9:05 amKathmandu Tribhuvan
$1,648

momondo Fare Finder

 
Use the filters below to find and compare flights from Kathmandu to Seattle that are best for you.

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Price

Cheapest round-trip

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 3/3

9:40 pm-2:41 pm

2 stops30h 46m

Seattle/Tacoma Intl

Thu 3/25

10:41 pm-8:40 pm

2 stops33h 14m

$1,126

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Tue 11/24

11:45 am-8:45 am

3 stops34h 45m

Seattle/Tacoma Intl

Tue 12/1

8:40 am-9:50 pm

1 stop23h 25m

$1,420

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 3/3

9:40 pm-12:57 pm

2 stops29h 02m

Seattle/Tacoma Intl

Thu 3/25

3:50 pm-6:35 am

3 stops50h 00m

$1,446

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 3/25

10:55 pm-8:05 am

1 stop45h 55m

Seattle/Tacoma Intl

Wed 8/11

4:45 pm-9:30 pm

2 stops40h 00m

$1,448

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Tue 11/24

4:05 pm-7:05 am

2 stops28h 45m

Seattle/Tacoma Intl

Tue 12/1

8:40 am-9:50 pm

1 stop23h 25m

$1,472
Quickest round-trip

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 3/3

10:55 pm-8:45 am

1 stop23h 35m

Seattle/Tacoma Intl

Thu 3/25

11:25 am-9:30 pm

1 stop21h 20m

$1,491

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 3/3

1:45 pm-1:35 pm

2 stops37h 35m

Seattle/Tacoma Intl

Thu 3/25

5:05 pm-6:40 pm

1 stop36h 50m

$1,518

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Tue 11/24

7:25 pm-9:05 am

1 stop27h 25m

Seattle/Tacoma Intl

Tue 12/1

8:40 am-9:50 pm

1 stop23h 25m

$1,529

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 3/24

12:25 am-6:40 pm

2 stops31h 00m

Seattle/Tacoma Intl

Tue 8/10

2:10 am-11:25 pm

2 stops32h 30m

$1,550

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 3/25

12:45 pm-6:10 pm

1 stop42h 10m

Seattle/Tacoma Intl

Wed 8/11

7:15 pm-6:05 am

1 stop22h 05m

$1,611

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 cheapest month to fly to Seattle?

In general, January 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 January, then you should wait until September to fly from Kathmandu, when ticket prices are also cheap, with an average price of $1,196.

Can stopping save me money on Kathmandu to Seattle flights?

You could potentially save up to 29% 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 October 2026, prices for Kathmandu to Seattle flights are approximately 15% 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

Best Price Found

$571

Fastest flight time

30h 46m

Direct flights

None
The best one-way flight to Seattle from Kathmandu in the past 72 hours is $571. The best round-trip flight deal from Kathmandu to Seattle found on momondo in the last 72 hours is $1,126.
The fastest flight from Kathmandu to Seattle takes 30h 46m
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 30h 46m, 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 $1,006Free CancellationRating
8.2
1,625 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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