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Cheap flights from Kathmandu to Seattle from $612

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 11/22. 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.
Singapore Airlines Logo
11:00 pm - 8:10 amKTM-SEA
45h 55m1 stop
Singapore Airlines Logo
10:15 am - 9:45 pmSEA-KTM
22h 45m1 stop
$1,169Singapore Airlines
Find Deal
Tue, Mar 17 - Tue, Sep 15
Singapore Airlines Logo
11:00 pm - 8:45 amKTM-SEA
46h 30m1 stop
Singapore Airlines Logo
10:15 am - 9:45 pmSEA-KTM
22h 45m1 stop
$1,254Singapore Airlines
Find Deal
Wed, Apr 29 - Thu, Jun 25
Multiple Airlines Logo
9:00 pm - 7:18 pmKTM-SEA
35h 03m3 stops
Multiple Airlines Logo
12:10 am - 10:30 pmSEA-KTM
33h 35m2 stops
$1,268Multiple Airlines
Find Deal
Wed, Apr 29 - Wed, Jun 24
Multiple Airlines Logo
11:00 pm - 9:01 pmKTM-SEA
34h 46m3 stops
Multiple Airlines Logo
10:15 am - 9:45 pmSEA-KTM
22h 45m1 stop
$1,310Multiple Airlines
Find Deal
Tue, Mar 17 - Tue, Sep 15
KLM Logo
5:10 pm - 12:25 pmKTM-SEA
32h 00m2 stops
KLM Logo
3:10 pm - 9:50 amSEA-KTM
29h 55m2 stops
$1,430KLM
Find Deal
Wed, Mar 18 - Sun, Mar 22
Turkish Airlines Logo
12:35 pm - 6:05 pmKTM-SEA
42h 15m1 stop
Turkish Airlines Logo
8:00 pm - 11:10 amSEA-KTM
26h 25m1 stop
$1,431Turkish Airlines
Find Deal
Wed, Mar 18 - Sun, Mar 22
Turkish Airlines Logo
12:35 pm - 6:05 pmKTM-SEA
42h 15m1 stop
Turkish Airlines Logo
8:00 pm - 11:10 amSEA-KTM
26h 25m1 stop
$1,432Turkish Airlines
Find Deal
Wed, Mar 18 - Sun, Mar 22
KLM Logo
5:10 pm - 12:25 pmKTM-SEA
32h 00m2 stops
KLM Logo
4:00 pm - 9:50 amSEA-KTM
29h 05m2 stops
$1,501KLM
Find Deal
Wed, Mar 18 - Sun, Mar 22
Emirates Logo
12:30 am - 1:35 pmKTM-SEA
25h 50m1 stop
Emirates Logo
5:15 pm - 6:55 pmSEA-KTM
36h 55m1 stop
$1,610Emirates
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Mon, Mar 16 - Tue, Sep 15
Emirates Logo
12:30 am - 1:35 pmKTM-SEA
25h 50m1 stop
Emirates Logo
5:05 pm - 6:40 pmSEA-KTM
36h 50m1 stop
$1,630Emirates
Find Deal
Tue, Mar 17 - Sun, Mar 22

Singapore Airlines flights from Kathmandu to Seattle

Our best Singapore Airlines deals on Kathmandu to Seattle flight tickets
Singapore Airlines
Mar 17
KTM11:00 pmKathmandu Tribhuvan
45h 55m
1 stop
SEA8:10 amSeattle/Tacoma Intl
Sep 15
SEA10:15 amSeattle/Tacoma Intl
22h 45m
1 stop
KTM9:45 pmKathmandu Tribhuvan
$1,169
Find similar
Singapore Airlines
Apr 29
KTM11:00 pmKathmandu Tribhuvan
46h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Jun 25
SEA10:15 amSeattle/Tacoma Intl
22h 45m
1 stop
KTM9:45 pmKathmandu Tribhuvan
$1,254
Find similar

KLM flights from Kathmandu to Seattle

Our best KLM deals on Kathmandu to Seattle flight tickets
KLM
Mar 18
KTM5:10 pmKathmandu Tribhuvan
32h 00m
2 stops
SEA12:25 pmSeattle/Tacoma Intl
Mar 22
SEA3:10 pmSeattle/Tacoma Intl
29h 55m
2 stops
KTM9:50 amKathmandu Tribhuvan
$1,430
Find similar
KLM
Mar 18
KTM5:10 pmKathmandu Tribhuvan
32h 00m
2 stops
SEA12:25 pmSeattle/Tacoma Intl
Mar 22
SEA4:00 pmSeattle/Tacoma Intl
29h 05m
2 stops
KTM9:50 amKathmandu Tribhuvan
$1,501
Find similar
KLM
Mar 18
KTM5:10 pmKathmandu Tribhuvan
32h 00m
2 stops
SEA12:25 pmSeattle/Tacoma Intl
Mar 22
SEA4:00 pmSeattle/Tacoma Intl
29h 05m
2 stops
KTM9:50 amKathmandu Tribhuvan
$1,504
Find similar

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 November 6, 2025.
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

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 3/17

11:00 pm-8:10 am

1 stop45h 55m

Seattle/Tacoma Intl

Tue 9/15

10:15 am-9:45 pm

1 stop22h 45m

$1,169

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 4/29

11:00 pm-8:45 am

1 stop46h 30m

Seattle/Tacoma Intl

Thu 6/25

10:15 am-9:45 pm

1 stop22h 45m

$1,254

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 4/29

9:00 pm-7:18 pm

3 stops35h 03m

Seattle/Tacoma Intl

Wed 6/24

12:10 am-10:30 pm

2 stops33h 35m

$1,268

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 3/17

11:00 pm-9:01 pm

3 stops34h 46m

Seattle/Tacoma Intl

Tue 9/15

10:15 am-9:45 pm

1 stop22h 45m

$1,310

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 3/18

5:10 pm-12:25 pm

2 stops32h 00m

Seattle/Tacoma Intl

Sun 3/22

3:10 pm-9:50 am

2 stops29h 55m

$1,430

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 3/18

12:35 pm-6:05 pm

1 stop42h 15m

Seattle/Tacoma Intl

Sun 3/22

8:00 pm-11:10 am

1 stop26h 25m

$1,431

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 3/18

12:35 pm-6:05 pm

1 stop42h 15m

Seattle/Tacoma Intl

Sun 3/22

8:00 pm-11:10 am

1 stop26h 25m

$1,432

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 3/18

5:10 pm-12:25 pm

2 stops32h 00m

Seattle/Tacoma Intl

Sun 3/22

4:00 pm-9:50 am

2 stops29h 05m

$1,501

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Mon 3/16

12:30 am-1:35 pm

1 stop25h 50m

Seattle/Tacoma Intl

Tue 9/15

5:15 pm-6:55 pm

1 stop36h 55m

$1,610

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 3/17

12:30 am-1:35 pm

1 stop25h 50m

Seattle/Tacoma Intl

Sun 3/22

5:05 pm-6:40 pm

1 stop36h 50m

$1,630

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 day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Kathmandu is on a Saturday. momondo users have found tickets for Saturday departures for as low as $1,463. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Kathmandu because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,978.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Kathmandu in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,411 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $2,090. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Kathmandu to Seattle flights?

You could potentially save up to 8% 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 November 2025, prices for Kathmandu to Seattle flights are approximately 25% 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

Direct flights

None
There are no direct flights from Kathmandu to Seattle. There are no popular flight routes from Kathmandu to Seattle.
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  • 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 21h 51m, 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 $1,103Free CancellationRating
8.1
1,393 reviews
Search Singapore Airlines flights
Turkish AirlinesPriceFrom $1,313Free CancellationRating
7.3
4,032 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,717Free CancellationRating
8.1
3,402 reviews
Search Emirates flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
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Leavenworth
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Marysville
Redmond
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Federal Way
Fife
Cle Elum
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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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