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Cheap flights from Kathmandu to Seattle from $591

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 4/28. 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
12:25 am - 10:06 pm
KTM
-
SEA
35h 26m2 stops
Multiple Airlines Logo
5:50 am - 5:45 pm
SEA
-
KTM
46h 10m2 stops
$1,072Multiple Airlines
Fri, Jan 23 - Sun, Feb 8
Korean Air Logo
7:20 pm - 9:00 am
KTM
-
SEA
27h 25m1 stop
Korean Air Logo
11:00 am - 5:45 pm
SEA
-
KTM
41h 00m1 stop
$1,129Korean Air
Sat, Jan 24 - Sun, Feb 8
Multiple Airlines Logo
9:05 pm - 7:16 pm
KTM
-
SEA
35h 56m3 stops
Multiple Airlines Logo
8:45 am - 6:35 am
SEA
-
KTM
32h 05m2 stops
$1,173Multiple Airlines
Tue, Feb 10 - Tue, Feb 17
Multiple Airlines Logo
9:05 pm - 7:16 pm
KTM
-
SEA
35h 56m3 stops
Multiple Airlines Logo
8:45 am - 6:35 am
SEA
-
KTM
32h 05m3 stops
$1,207Multiple Airlines
Tue, Feb 10 - Tue, Feb 17
Multiple Airlines Logo
10:55 pm - 6:10 pm
KTM
-
SEA
33h 00m2 stops
Multiple Airlines Logo
8:45 am - 9:50 pm
SEA
-
KTM
23h 20m1 stop
$1,210Multiple Airlines
Sat, Jan 24 - Sun, Feb 8
Multiple Airlines Logo
9:05 pm - 7:16 pm
KTM
-
SEA
35h 56m3 stops
Multiple Airlines Logo
4:05 pm - 5:50 pm
SEA
-
KTM
36h 00m1 stop
$1,232Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
Singapore Airlines Logo
11:00 pm - 8:10 am
KTM
-
SEA
45h 55m1 stop
Singapore Airlines Logo
10:15 am - 9:45 pm
SEA
-
KTM
22h 45m1 stop
$1,246Singapore Airlines
Thu, Mar 19 - Tue, Sep 15
Qatar Airways Logo
5:40 pm - 11:40 am
KTM
-
SEA
31h 45m1 stop
Qatar Airways Logo
4:05 pm - 5:50 pm
SEA
-
KTM
36h 00m1 stop
$1,258Qatar Airways
Sat, Jan 24 - Sat, Jan 31
Multiple Airlines Logo
9:05 pm - 7:16 pm
KTM
-
SEA
35h 56m3 stops
Multiple Airlines Logo
12:10 am - 11:25 pm
SEA
-
KTM
33h 30m2 stops
$1,279Multiple Airlines
Sat, Jan 24 - Fri, Jan 30
Qatar Airways Logo
5:40 pm - 11:40 am
KTM
-
SEA
31h 45m1 stop
Qatar Airways Logo
6:00 am - 7:55 am
SEA
-
KTM
36h 10m2 stops
$1,287Qatar Airways
Sat, Jan 24 - Sat, Jan 31

Qatar Airways flights from Kathmandu to Seattle

Our best Qatar Airways deals on Kathmandu to Seattle flight tickets
Qatar Airways
Jan 24
KTM5:40 pmKathmandu Tribhuvan
31h 45m
1 stop
SEA11:40 amSeattle/Tacoma Intl
Jan 31
SEA4:05 pmSeattle/Tacoma Intl
36h 00m
1 stop
KTM5:50 pmKathmandu Tribhuvan
$1,258
Find similar
Qatar Airways
Jan 24
KTM5:40 pmKathmandu Tribhuvan
31h 45m
1 stop
SEA11:40 amSeattle/Tacoma Intl
Jan 31
SEA6:00 amSeattle/Tacoma Intl
36h 10m
2 stops
KTM7:55 amKathmandu Tribhuvan
$1,287
Find similar
Qatar Airways
Mar 19
KTM7:05 pmKathmandu Tribhuvan
40h 56m
2 stops
SEA11:16 pmSeattle/Tacoma Intl
Sep 15
SEA4:25 pmSeattle/Tacoma Intl
27h 40m
1 stop
KTM8:50 amKathmandu Tribhuvan
$1,406
Find similar

Cathay Pacific flights from Kathmandu to Seattle

Our best Cathay Pacific deals on Kathmandu to Seattle flight tickets
Cathay Pacific
Apr 13
KTM11:00 pmKathmandu Tribhuvan
23h 55m
1 stop
SEA10:10 amSeattle/Tacoma Intl
May 13
SEA11:50 amSeattle/Tacoma Intl
21h 10m
1 stop
KTM9:45 pmKathmandu Tribhuvan
$1,295
Find similar
Cathay Pacific
Jan 6
KTM10:55 pmKathmandu Tribhuvan
53h 24m
2 stops
SEA2:34 pmSeattle/Tacoma Intl
Jan 20
SEA7:55 pmSeattle/Tacoma Intl
35h 50m
2 stops
KTM9:30 pmKathmandu Tribhuvan
$1,797
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 December 28, 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

Fri 1/23

12:25 am-10:06 pm

2 stops35h 26m

Seattle/Tacoma Intl

Sun 2/8

5:50 am-5:45 pm

2 stops46h 10m

$1,072

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 1/24

7:20 pm-9:00 am

1 stop27h 25m

Seattle/Tacoma Intl

Sun 2/8

11:00 am-5:45 pm

1 stop41h 00m

$1,129

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 2/10

9:05 pm-7:16 pm

3 stops35h 56m

Seattle/Tacoma Intl

Tue 2/17

8:45 am-6:35 am

2 stops32h 05m

$1,173

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 2/10

9:05 pm-7:16 pm

3 stops35h 56m

Seattle/Tacoma Intl

Tue 2/17

8:45 am-6:35 am

3 stops32h 05m

$1,207

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 1/24

10:55 pm-6:10 pm

2 stops33h 00m

Seattle/Tacoma Intl

Sun 2/8

8:45 am-9:50 pm

1 stop23h 20m

$1,210

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 1/24

9:05 pm-7:16 pm

3 stops35h 56m

Seattle/Tacoma Intl

Sat 1/31

4:05 pm-5:50 pm

1 stop36h 00m

$1,232

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 3/19

11:00 pm-8:10 am

1 stop45h 55m

Seattle/Tacoma Intl

Tue 9/15

10:15 am-9:45 pm

1 stop22h 45m

$1,246

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 1/24

5:40 pm-11:40 am

1 stop31h 45m

Seattle/Tacoma Intl

Sat 1/31

4:05 pm-5:50 pm

1 stop36h 00m

$1,258

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 1/24

9:05 pm-7:16 pm

3 stops35h 56m

Seattle/Tacoma Intl

Fri 1/30

12:10 am-11:25 pm

2 stops33h 30m

$1,279

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 1/24

5:40 pm-11:40 am

1 stop31h 45m

Seattle/Tacoma Intl

Sat 1/31

6:00 am-7:55 am

2 stops36h 10m

$1,287

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 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 19% 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 December 2025, 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

23h 55m

Direct flights

None
The fastest flight from Kathmandu to Seattle takes 23h 55m
There are no direct flights from Kathmandu to Seattle. There are no popular flight routes from Kathmandu to Seattle.
Search flight deals

  • 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 23h 55m, 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
1,421 reviews
Search Singapore Airlines flights
Korean AirPriceFrom $1,191Free CancellationRating
8.4
1,184 reviews
Search Korean Air flights
Turkish AirlinesPriceFrom $1,313Free CancellationRating
7.3
4,126 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,717Free CancellationRating
8.1
3,447 reviews
Search Emirates 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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