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Cheap flights from Kathmandu to Seattle from $576

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.
Air India Logo
5:10 pm - 7:10 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
51h 45m2 stops New Delhi Indira Gandhi Intl Vancouver Intl
Air India Logo
2:40 pm - 8:40 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
40h 15m2 stops New York John F Kennedy Intl New Delhi Indira Gandhi Intl
$1,063Air India
Thu, Dec 17 - Fri, Jan 22
Singapore Airlines Logo
10:55 pm - 8:05 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
45h 55m1 stop Singapore Changi
Singapore Airlines Logo
10:15 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
22h 30m1 stop Singapore Changi
$1,215Singapore Airlines
Thu, Mar 25 - Thu, Aug 12
Multiple Airlines Logo
12:25 am - 9:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
22h 05m2 stops Bangkok Suvarnabhumi Hong Kong Intl
Multiple Airlines Logo
10:15 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
22h 30m1 stop Singapore Changi
$1,293Multiple Airlines
Wed, Mar 24 - Thu, Aug 12
Multiple Airlines Logo
12:25 am - 7:10 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 30m3 stops Bangkok Suvarnabhumi Hong Kong Intl Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
10:15 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
22h 30m1 stop Singapore Changi
$1,437Multiple Airlines
Wed, Mar 24 - Thu, Aug 12
Air India Logo
6:30 am - 7:10 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
38h 25m2 stops New Delhi Indira Gandhi Intl Vancouver Intl
Air India Logo
11:26 am - 6:35 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
53h 24m3 stops Vancouver Intl Vienna Intl New Delhi Indira Gandhi Intl
$1,478Air India
Thu, Dec 17 - Fri, Jan 22
Multiple Airlines Logo
10:05 am - 7:10 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
34h 50m2 stops New Delhi Indira Gandhi Intl Vancouver Intl
Multiple Airlines Logo
8:40 am - 9:50 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
23h 25m1 stop Singapore Changi
$1,565Multiple Airlines
Thu, Dec 17 - Fri, Jan 22
Multiple Airlines Logo
12:25 am - 6:40 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 00m2 stops Bangkok Suvarnabhumi Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
10:30 am - 9:05 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
33h 50m3 stops San Francisco Kolkata Netaji S. Chandra New Delhi Indira Gandhi Intl
$1,642Multiple Airlines
Wed, Mar 24 - Thu, Aug 12
Emirates Logo
7:40 pm - 1:35 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 40m1 stop Dubai Intl
Emirates Logo
4:05 pm - 6:40 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
36h 50m1 stop Dubai Intl
$1,664Emirates
Thu, Dec 17 - Fri, Jan 22
Multiple Airlines Logo
11:30 pm - 2:37 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
28h 52m3 stops Guangzhou Baiyun Incheon Intl Vancouver Intl
Multiple Airlines Logo
12:10 am - 10:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
32h 35m3 stops Taipei City Taiwan Taoyuan Intl Bangkok Suvarnabhumi Guangzhou Baiyun
$1,700Multiple Airlines
Thu, Dec 17 - Thu, Jan 21
Multiple Airlines Logo
8:50 pm - 3:05 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
32h 00m3 stops New Delhi Indira Gandhi Intl Hong Kong Intl Taipei City Taiwan Taoyuan Intl
Multiple Airlines Logo
8:40 am - 6:35 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
32h 10m3 stops Vancouver Intl Shanghai Pu Dong New Delhi Indira Gandhi Intl
$1,770Multiple Airlines
Fri, Nov 13 - Fri, Nov 20

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Air India flights from Kathmandu to Seattle

Our best Air India deals on Kathmandu to Seattle flight tickets
Air India
Dec 17
KTM5:10 pmKathmandu Tribhuvan
51h 45m
2 stops
SEA7:10 amSeattle/Tacoma Intl
Jan 22
SEA2:40 pmSeattle/Tacoma Intl
40h 15m
2 stops
KTM8:40 pmKathmandu Tribhuvan
$1,063
Air India
Dec 17
KTM6:30 amKathmandu Tribhuvan
38h 25m
2 stops
SEA7:10 amSeattle/Tacoma Intl
Jan 22
SEA11:26 amSeattle/Tacoma Intl
53h 24m
3 stops
KTM6:35 amKathmandu Tribhuvan
$1,478
Air India
Oct 22
KTM10:05 amKathmandu Tribhuvan
39h 36m
2 stops
SEA12:56 pmSeattle/Tacoma Intl
Nov 6
SEA9:39 pmSeattle/Tacoma Intl
45h 41m
3 stops
KTM9:05 amKathmandu Tribhuvan
$1,554

Qatar Airways flights from Kathmandu to Seattle

Our best Qatar Airways deals on Kathmandu to Seattle flight tickets
Qatar Airways
Oct 22
KTM5:30 pmKathmandu Tribhuvan
32h 15m
1 stop
SEA1:00 pmSeattle/Tacoma Intl
Nov 6
SEA7:58 pmSeattle/Tacoma Intl
52h 52m
2 stops
KTM2:35 pmKathmandu Tribhuvan
$1,613
Qatar Airways
Oct 22
KTM5:30 pmKathmandu Tribhuvan
32h 15m
1 stop
SEA1:00 pmSeattle/Tacoma Intl
Nov 6
SEA1:35 pmSeattle/Tacoma Intl
60h 55m
2 stops
KTM4:15 pmKathmandu Tribhuvan
$1,692
Qatar Airways
Oct 22
KTM7:00 pmKathmandu Tribhuvan
39h 44m
2 stops
SEA9:59 pmSeattle/Tacoma Intl
Nov 6
SEA9:49 pmSeattle/Tacoma Intl
54h 11m
2 stops
KTM5:45 pmKathmandu Tribhuvan
$1,759

momondo Fare Finder

 
Use the filters below to find and compare flights from Kathmandu to Seattle that are best for you.

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Route

Depart

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Price

Cheapest round-trip

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 12/17

5:10 pm-7:10 am

2 stops51h 45m

Seattle/Tacoma Intl

Fri 1/22

2:40 pm-8:40 pm

2 stops40h 15m

$1,063

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 3/25

10:55 pm-8:05 am

1 stop45h 55m

Seattle/Tacoma Intl

Thu 8/12

10:15 am-9:30 pm

1 stop22h 30m

$1,215
Quickest round-trip

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 3/24

12:25 am-9:45 am

2 stops22h 05m

Seattle/Tacoma Intl

Thu 8/12

10:15 am-9:30 pm

1 stop22h 30m

$1,293

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 3/24

12:25 am-7:10 pm

3 stops31h 30m

Seattle/Tacoma Intl

Thu 8/12

10:15 am-9:30 pm

1 stop22h 30m

$1,437

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 12/17

6:30 am-7:10 am

2 stops38h 25m

Seattle/Tacoma Intl

Fri 1/22

11:26 am-6:35 am

3 stops53h 24m

$1,478

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 12/17

10:05 am-7:10 am

2 stops34h 50m

Seattle/Tacoma Intl

Fri 1/22

8:40 am-9:50 pm

1 stop23h 25m

$1,565

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 3/24

12:25 am-6:40 pm

2 stops31h 00m

Seattle/Tacoma Intl

Thu 8/12

10:30 am-9:05 am

3 stops33h 50m

$1,642

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 12/17

7:40 pm-1:35 pm

1 stop31h 40m

Seattle/Tacoma Intl

Fri 1/22

4:05 pm-6:40 pm

1 stop36h 50m

$1,664

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 12/17

11:30 pm-2:37 pm

3 stops28h 52m

Seattle/Tacoma Intl

Thu 1/21

12:10 am-10:30 pm

3 stops32h 35m

$1,700

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Fri 11/13

8:50 pm-3:05 pm

3 stops32h 00m

Seattle/Tacoma Intl

Fri 11/20

8:40 am-6:35 am

3 stops32h 10m

$1,770

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 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 29% 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 October 2026, prices for Kathmandu to Seattle flights are approximately 15% 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

$576

Fastest flight time

32h 00m

Direct flights

None
The best one-way flight to Seattle from Kathmandu in the past 72 hours is $576. The best round-trip flight deal from Kathmandu to Seattle found on momondo in the last 72 hours is $1,063.
The fastest flight from Kathmandu to Seattle takes 32h 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 32h 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
1,628 reviews
Search Singapore Airlines flights

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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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