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Cheap flights from Kathmandu to Seattle from $563

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 12/15. 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
10:20 pm - 7:16 pmKTM-SEA
34h 41m3 stops
Multiple Airlines Logo
8:45 am - 9:50 pmSEA-KTM
23h 20m1 stop
$1,137Multiple Airlines
Find Deal
jue., dic. 25 - vie., ene. 16
Multiple Airlines Logo
10:20 pm - 7:16 pmKTM-SEA
34h 41m3 stops
Multiple Airlines Logo
8:45 am - 9:50 amSEA-KTM
35h 20m3 stops
$1,201Multiple Airlines
Find Deal
jue., dic. 25 - vie., ene. 16
Multiple Airlines Logo
12:25 am - 6:40 pmKTM-SEA
32h 00m2 stops
Multiple Airlines Logo
8:45 am - 9:50 pmSEA-KTM
23h 20m1 stop
$1,209Multiple Airlines
Find Deal
mié., dic. 24 - vie., ene. 16
Qatar Airways Logo
5:40 pm - 11:40 amKTM-SEA
31h 45m1 stop
Qatar Airways Logo
5:05 pm - 4:25 pmSEA-KTM
34h 35m1 stop
$1,212Qatar Airways
Find Deal
jue., mar. 5 - lun., mar. 9
Qatar Airways Logo
5:40 pm - 11:40 amKTM-SEA
31h 45m1 stop
Qatar Airways Logo
5:05 pm - 5:50 pmSEA-KTM
36h 00m1 stop
$1,216Qatar Airways
Find Deal
jue., mar. 5 - lun., mar. 9
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
$1,238Singapore Airlines
Find Deal
mar., may. 5 - vie., jun. 5
Qatar Airways Logo
5:40 pm - 9:48 pmKTM-SEA
41h 53m2 stops
Qatar Airways Logo
5:05 pm - 5:50 pmSEA-KTM
36h 00m1 stop
$1,240Qatar Airways
Find Deal
jue., mar. 5 - lun., mar. 9
Multiple Airlines Logo
12:35 pm - 5:05 pmKTM-SEA
42h 15m1 stop
Multiple Airlines Logo
8:45 am - 9:50 pmSEA-KTM
23h 20m1 stop
$1,242Multiple Airlines
Find Deal
jue., dic. 25 - vie., ene. 16
Qatar Airways Logo
5:40 pm - 9:48 pmKTM-SEA
41h 53m2 stops
Qatar Airways Logo
5:05 pm - 4:25 pmSEA-KTM
34h 35m1 stop
$1,244Qatar Airways
Find Deal
jue., mar. 5 - lun., mar. 9
Multiple Airlines Logo
10:55 pm - 5:30 pmKTM-SEA
32h 20m2 stops
Multiple Airlines Logo
12:10 am - 9:30 pmSEA-KTM
31h 35m2 stops
$1,267Multiple Airlines
Find Deal
lun., dic. 22 - sáb., dic. 27

Singapore Airlines flights from Kathmandu to Seattle

Our best Singapore Airlines deals on Kathmandu to Seattle flight tickets
Singapore Airlines
May 5
KTM11:00 pmKathmandu Tribhuvan
46h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
Jun 5
SEA10:15 amSeattle/Tacoma Intl
22h 45m
1 stop
KTM9:45 pmKathmandu Tribhuvan
$1,238
Find similar
Singapore Airlines
Nov 28
KTM11:05 pmKathmandu Tribhuvan
21h 50m
1 stop
SEA7:10 amSeattle/Tacoma Intl
Nov 30
SEA8:45 amSeattle/Tacoma Intl
23h 30m
1 stop
KTM10:00 pmKathmandu Tribhuvan
$2,072
Find similar

Qatar Airways flights from Kathmandu to Seattle

Our best Qatar Airways deals on Kathmandu to Seattle flight tickets
Qatar Airways
Mar 5
KTM5:40 pmKathmandu Tribhuvan
31h 45m
1 stop
SEA11:40 amSeattle/Tacoma Intl
Mar 9
SEA5:05 pmSeattle/Tacoma Intl
34h 35m
1 stop
KTM4:25 pmKathmandu Tribhuvan
$1,212
Find similar
Qatar Airways
Mar 5
KTM5:40 pmKathmandu Tribhuvan
31h 45m
1 stop
SEA11:40 amSeattle/Tacoma Intl
Mar 9
SEA5:05 pmSeattle/Tacoma Intl
36h 00m
1 stop
KTM5:50 pmKathmandu Tribhuvan
$1,216
Find similar
Qatar Airways
Mar 5
KTM5:40 pmKathmandu Tribhuvan
41h 53m
2 stops
SEA9:48 pmSeattle/Tacoma Intl
Mar 9
SEA5:05 pmSeattle/Tacoma Intl
36h 00m
1 stop
KTM5:50 pmKathmandu Tribhuvan
$1,240
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 noviembre 26, 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

jue. 12/25

10:20 pm-7:16 pm

3 stops34h 41m

Seattle/Tacoma Intl

vie. 1/16

8:45 am-9:50 pm

1 stop23h 20m

$1,137

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

jue. 12/25

10:20 pm-7:16 pm

3 stops34h 41m

Seattle/Tacoma Intl

vie. 1/16

8:45 am-9:50 am

3 stops35h 20m

$1,201

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

mié. 12/24

12:25 am-6:40 pm

2 stops32h 00m

Seattle/Tacoma Intl

vie. 1/16

8:45 am-9:50 pm

1 stop23h 20m

$1,209

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

jue. 3/5

5:40 pm-11:40 am

1 stop31h 45m

Seattle/Tacoma Intl

lun. 3/9

5:05 pm-4:25 pm

1 stop34h 35m

$1,212

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

jue. 3/5

5:40 pm-11:40 am

1 stop31h 45m

Seattle/Tacoma Intl

lun. 3/9

5:05 pm-5:50 pm

1 stop36h 00m

$1,216

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

mar. 5/5

11:00 pm-8:45 am

1 stop46h 30m

Seattle/Tacoma Intl

vie. 6/5

10:15 am-9:45 pm

1 stop22h 45m

$1,238

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

jue. 3/5

5:40 pm-9:48 pm

2 stops41h 53m

Seattle/Tacoma Intl

lun. 3/9

5:05 pm-5:50 pm

1 stop36h 00m

$1,240

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

jue. 12/25

12:35 pm-5:05 pm

1 stop42h 15m

Seattle/Tacoma Intl

vie. 1/16

8:45 am-9:50 pm

1 stop23h 20m

$1,242

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

jue. 3/5

5:40 pm-9:48 pm

2 stops41h 53m

Seattle/Tacoma Intl

lun. 3/9

5:05 pm-4:25 pm

1 stop34h 35m

$1,244

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

lun. 12/22

10:55 pm-5:30 pm

2 stops32h 20m

Seattle/Tacoma Intl

sáb. 12/27

12:10 am-9:30 pm

2 stops31h 35m

$1,267

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 12% 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 26% 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

26h 48m

Direct flights

None
The fastest flight from Kathmandu to Seattle takes 26h 48m
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 25h 50m, 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
1,409 reviews
Search Singapore Airlines flights
Korean AirPriceFrom $1,224Free CancellationRating
8.4
1,170 reviews
Search Korean Air flights
Turkish AirlinesPriceFrom $1,313Free CancellationRating
7.3
4,059 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,717Free CancellationRating
8.1
3,421 reviews
Search Emirates flights

Traveling to a place near Seattle?

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

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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