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Cheap flights from Kathmandu to Seattle from $544

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 7/6. 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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0 bags

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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
5:00 pm - 2:55 pm
KTM
-
SEA
34h 40m
3 stops
Multiple Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,235Multiple Airlines
Thu, Mar 19 - Thu, Sep 10
Multiple Airlines Logo
7:40 am - 5:15 pm
KTM
-
SEA
22h 20m
1 stop
Multiple Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,243Multiple Airlines
Thu, Apr 16 - Thu, Apr 23
Multiple Airlines Logo
1:45 pm - 1:35 pm
KTM
-
SEA
60h 35m
2 stops
Multiple Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,279Multiple Airlines
Thu, Mar 19 - Thu, Sep 10
Multiple Airlines Logo
1:45 pm - 1:35 pm
KTM
-
SEA
60h 35m
2 stops
Multiple Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,281Multiple Airlines
Wed, Mar 18 - Fri, Sep 4
Multiple Airlines Logo
1:45 pm - 1:35 pm
KTM
-
SEA
36h 35m
2 stops
Multiple Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
$1,302Multiple Airlines
Thu, Mar 19 - Thu, Sep 10
Multiple Airlines Logo
1:45 pm - 1:35 pm
KTM
-
SEA
60h 35m
2 stops
Multiple Airlines Logo
5:15 pm - 6:10 pm
SEA
-
KTM
36h 10m
2 stops
$1,343Multiple Airlines
Mon, Mar 23 - Thu, Apr 23
Multiple Airlines Logo
1:45 pm - 1:35 pm
KTM
-
SEA
60h 35m
2 stops
Multiple Airlines Logo
5:15 pm - 9:45 am
SEA
-
KTM
27h 45m
1 stop
$1,382Multiple Airlines
Mon, Mar 23 - Thu, Apr 23
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
4:30 pm - 5:00 pm
SEA
-
KTM
35h 45m
1 stop
$1,406Multiple Airlines
Fri, Apr 17 - Fri, Apr 24
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
$1,407Multiple Airlines
Fri, Apr 17 - Fri, Apr 24
Multiple Airlines Logo
3:05 pm - 12:40 pm
KTM
-
SEA
34h 20m
2 stops
Multiple Airlines Logo
11:31 am - 9:50 am
SEA
-
KTM
33h 34m
2 stops
$1,415Multiple Airlines
Thu, Mar 19 - Thu, Sep 10

Qatar Airways flights from Kathmandu to Seattle

Our best Qatar Airways deals on Kathmandu to Seattle flight tickets
Qatar Airways
Mar 18
KTM5:40 pmKathmandu Tribhuvan
31h 45m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
Sep 4
SEA4:25 pmSeattle/Tacoma Intl
28h 40m
1 stop
KTM9:50 amKathmandu Tribhuvan
$1,568
Qatar Airways
Mar 19
KTM9:10 amKathmandu Tribhuvan
40h 15m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
Sep 10
SEA4:25 pmSeattle/Tacoma Intl
28h 40m
1 stop
KTM9:50 amKathmandu Tribhuvan
$1,570
Qatar Airways
Apr 17
KTM10:55 amKathmandu Tribhuvan
38h 35m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
Apr 24
SEA4:30 pmSeattle/Tacoma Intl
35h 45m
1 stop
KTM5:00 pmKathmandu Tribhuvan
$1,571

Cathay Pacific flights from Kathmandu to Seattle

Our best Cathay Pacific deals on Kathmandu to Seattle flight tickets
Cathay Pacific
Mar 8
KTM10:55 pmKathmandu Tribhuvan
32h 47m
2 stops
SEA6:57 pmSeattle/Tacoma Intl
Mar 10
SEA6:21 pmSeattle/Tacoma Intl
38h 24m
2 stops
KTM9:30 pmKathmandu Tribhuvan
$4,959
Cathay Pacific
Mar 8
KTM10:55 pmKathmandu Tribhuvan
30h 50m
2 stops
SEA5:00 pmSeattle/Tacoma Intl
Mar 12
SEA7:41 pmSeattle/Tacoma Intl
37h 04m
2 stops
KTM9:30 pmKathmandu Tribhuvan
$5,748

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 March 6, 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

Thu 3/19

5:00 pm-2:55 pm

3 stops34h 40m

Seattle/Tacoma Intl

Thu 9/10

10:15 am-9:30 pm

1 stop22h 30m

$1,235
Quickest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 4/16

7:40 am-5:15 pm

1 stop22h 20m

Seattle/Tacoma Intl

Thu 4/23

10:15 am-9:30 pm

1 stop22h 30m

$1,243

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 3/19

1:45 pm-1:35 pm

2 stops60h 35m

Seattle/Tacoma Intl

Thu 9/10

10:15 am-9:30 pm

1 stop22h 30m

$1,279

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 3/18

1:45 pm-1:35 pm

2 stops60h 35m

Seattle/Tacoma Intl

Fri 9/4

10:15 am-9:30 pm

1 stop22h 30m

$1,281

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 3/19

1:45 pm-1:35 pm

2 stops36h 35m

Seattle/Tacoma Intl

Thu 9/10

10:15 am-9:30 pm

1 stop22h 30m

$1,302

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Mon 3/23

1:45 pm-1:35 pm

2 stops60h 35m

Seattle/Tacoma Intl

Thu 4/23

5:15 pm-6:10 pm

2 stops36h 10m

$1,343

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Mon 3/23

1:45 pm-1:35 pm

2 stops60h 35m

Seattle/Tacoma Intl

Thu 4/23

5:15 pm-9:45 am

1 stop27h 45m

$1,382

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 4/17

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Fri 4/24

4:30 pm-5:00 pm

1 stop35h 45m

$1,406

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 4/17

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

Fri 4/24

5:15 pm-6:10 pm

2 stops36h 10m

$1,407

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 3/19

3:05 pm-12:40 pm

2 stops34h 20m

Seattle/Tacoma Intl

Thu 9/10

11:31 am-9:50 am

2 stops33h 34m

$1,415

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?

Can stopping save me money on Kathmandu to Seattle flights?

You could potentially save up to 4% 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 March 2026, prices for Kathmandu to Seattle flights are approximately 13% more expensive 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

35h 46m

Direct flights

None
The fastest flight from Kathmandu to Seattle takes 35h 46m
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 35h 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 $1,148Free CancellationRating
8.2
1,468 reviews
Search Singapore Airlines flights
EmiratesPriceFrom $1,717Free CancellationRating
8.1
3,539 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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