Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Kathmandu to Seattle from $706

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
12:25 am - 4:10 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
28h 30m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
1:15 am - 12:25 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
46h 25m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
$1,214Multiple Airlines
Sun, Sep 13 - Sun, Sep 20
Singapore Airlines Logo
10:55 pm - 7:10 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
22h 00m1 stop Singapore Changi
Singapore Airlines Logo
10:15 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
22h 30m1 stop Singapore Changi
$1,330Singapore Airlines
Fri, Nov 27 - Fri, Apr 30
Multiple Airlines Logo
9:10 pm - 8:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
48h 20m2 stops New Delhi Indira Gandhi Intl Singapore Changi
Multiple Airlines Logo
10:15 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
22h 30m1 stop Singapore Changi
$1,354Multiple Airlines
Sun, Oct 4 - Thu, Apr 29
Multiple Airlines Logo
9:10 pm - 8:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
48h 20m2 stops New Delhi Indira Gandhi Intl Singapore Changi
Multiple Airlines Logo
10:15 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
22h 30m1 stop Singapore Changi
$1,354Multiple Airlines
Sun, Oct 4 - Tue, Apr 27
Multiple Airlines Logo
11:00 pm - 6:40 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
32h 25m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
1:30 am - 11:25 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
33h 10m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
$1,386Multiple Airlines
Wed, Sep 30 - Sat, Apr 24
Multiple Airlines Logo
11:00 pm - 6:40 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
32h 25m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
1:30 am - 11:25 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
33h 10m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
$1,386Multiple Airlines
Wed, Sep 30 - Sun, Apr 25
Multiple Airlines Logo
11:00 pm - 6:40 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
32h 25m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
1:30 am - 11:25 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
33h 10m2 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi
$1,386Multiple Airlines
Wed, Sep 30 - Mon, Apr 26
Qatar Airways Logo
6:00 pm - 12:45 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 30m1 stop Doha Hamad Intl
Qatar Airways Logo
4:25 pm - 8:50 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
27h 40m1 stop Doha Hamad Intl
$1,387Qatar Airways
Mon, Sep 14 - Mon, Sep 21
Multiple Airlines Logo
11:00 pm - 7:20 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
33h 05m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
1:30 am - 9:45 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
31h 30m2 stops Taipei City Taiwan Taoyuan Intl Hong Kong Intl
$1,401Multiple Airlines
Thu, Oct 1 - Sun, Apr 25
Singapore Airlines Logo
11:10 pm - 8:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
22h 20m1 stop Singapore Changi
Singapore Airlines Logo
10:15 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
22h 30m1 stop Singapore Changi
$1,485Singapore Airlines
Wed, Sep 30 - Thu, Apr 29

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Singapore Airlines flights from Kathmandu to Seattle

Our best Singapore Airlines deals on Kathmandu to Seattle flight tickets
Singapore Airlines
Nov 27
KTM10:55 pmKathmandu Tribhuvan
22h 00m
1 stop
SEA7:10 amSeattle/Tacoma Intl
Apr 30
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
$1,330
Singapore Airlines
Sep 28
KTM11:10 pmKathmandu Tribhuvan
22h 20m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Apr 27
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
$1,485
Singapore Airlines
Sep 28
KTM11:10 pmKathmandu Tribhuvan
22h 20m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Apr 25
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
$1,540

KLM flights from Kathmandu to Seattle

Our best KLM deals on Kathmandu to Seattle flight tickets
KLM
Oct 1
KTM8:50 pmKathmandu Tribhuvan
32h 30m
2 stops
SEA4:35 pmSeattle/Tacoma Intl
Apr 27
SEA1:45 pmSeattle/Tacoma Intl
35h 40m
2 stops
KTM2:10 pmKathmandu Tribhuvan
$1,599
KLM
Oct 2
KTM8:50 pmKathmandu Tribhuvan
27h 10m
2 stops
SEA11:15 amSeattle/Tacoma Intl
Apr 26
SEA5:40 pmSeattle/Tacoma Intl
55h 45m
2 stops
KTM2:10 pmKathmandu Tribhuvan
$1,853

momondo Fare Finder

 
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 Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Sun 9/13

12:25 am-4:10 pm

2 stops28h 30m

Seattle/Tacoma Intl

Sun 9/20

1:15 am-12:25 pm

2 stops46h 25m

$1,214
Quickest round-trip

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Fri 11/27

10:55 pm-7:10 am

1 stop22h 00m

Seattle/Tacoma Intl

Fri 4/30

10:15 am-9:30 pm

1 stop22h 30m

$1,330

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Sun 10/4

9:10 pm-8:45 am

2 stops48h 20m

Seattle/Tacoma Intl

Thu 4/29

10:15 am-9:30 pm

1 stop22h 30m

$1,354

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Sun 10/4

9:10 pm-8:45 am

2 stops48h 20m

Seattle/Tacoma Intl

Tue 4/27

10:15 am-9:30 pm

1 stop22h 30m

$1,354

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 9/30

11:00 pm-6:40 pm

2 stops32h 25m

Seattle/Tacoma Intl

Sat 4/24

1:30 am-11:25 pm

2 stops33h 10m

$1,386

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 9/30

11:00 pm-6:40 pm

2 stops32h 25m

Seattle/Tacoma Intl

Sun 4/25

1:30 am-11:25 pm

2 stops33h 10m

$1,386

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 9/30

11:00 pm-6:40 pm

2 stops32h 25m

Seattle/Tacoma Intl

Mon 4/26

1:30 am-11:25 pm

2 stops33h 10m

$1,386

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Mon 9/14

6:00 pm-12:45 pm

1 stop31h 30m

Seattle/Tacoma Intl

Mon 9/21

4:25 pm-8:50 am

1 stop27h 40m

$1,387

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 10/1

11:00 pm-7:20 pm

2 stops33h 05m

Seattle/Tacoma Intl

Sun 4/25

1:30 am-9:45 pm

2 stops31h 30m

$1,401

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 9/30

11:10 pm-8:45 am

1 stop22h 20m

Seattle/Tacoma Intl

Thu 4/29

10:15 am-9:30 pm

1 stop22h 30m

$1,485

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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 16% 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 August 2026, prices for Kathmandu to Seattle flights are approximately 24% 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

$706

Fastest flight time

22h 00m

Direct flights

None
The best one-way flight to Seattle from Kathmandu in the past 72 hours is $706. The best round-trip flight deal from Kathmandu to Seattle found on momondo in the last 72 hours is $1,214.
The fastest flight from Kathmandu to Seattle takes 22h 00m
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 22h 00m, 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
1,584 reviews
Search Singapore Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Kent
Olympia
Lynnwood
Redmond
Lakewood
Federal Way
Puyallup
Fife
Tukwila
Cle Elum
Marysville
Kirkland
Lacey
Shoreline
Centralia

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.

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 9/18
Fri 9/25
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States