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Cheap flights from Seattle to Kathmandu from $508

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Kathmandu

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
8:40 am - 9:50 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
23h 25m1 stop Singapore Changi
Singapore Airlines Logo
10:55 pm - 7:05 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
69h 55m1 stop Singapore Changi
$1,002Singapore Airlines
Fri, Jan 1 - Sun, Jan 31
Singapore Airlines Logo
9:40 am - 9:40 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
71h 15m1 stop Singapore Changi
Singapore Airlines Logo
10:50 pm - 8:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
22h 40m1 stop Singapore Changi
$1,010Singapore Airlines
Sun, Mar 14 - Mon, Jun 14
Air India Logo
8:10 am - 6:35 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
32h 40m3 stops San Francisco Vienna Intl New Delhi Indira Gandhi Intl
Air India Logo
9:40 pm - 6:56 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
35h 01m2 stops New Delhi Indira Gandhi Intl San Francisco
$1,036Air India
Tue, Feb 23 - Wed, Mar 10
Multiple Airlines Logo
8:35 pm - 9:05 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
46h 45m3 stops San Francisco Kolkata Netaji S. Chandra New Delhi Indira Gandhi Intl
Multiple Airlines Logo
6:30 am - 8:04 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
27h 19m2 stops New Delhi Indira Gandhi Intl San Francisco
$1,041Multiple Airlines
Wed, Nov 25 - Tue, Dec 15
Qatar Airways Logo
3:50 pm - 4:25 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
34h 50m1 stop Doha Hamad Intl
Qatar Airways Logo
5:40 pm - 11:40 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 45m1 stop Doha Hamad Intl
$1,077Qatar Airways
Mon, Jan 18 - Mon, Feb 1
Qatar Airways Logo
3:50 pm - 8:20 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
26h 45m1 stop Doha Hamad Intl
Qatar Airways Logo
6:45 pm - 11:40 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 40m1 stop Doha Hamad Intl
$1,080Qatar Airways
Tue, Jan 19 - Mon, Feb 1
Turkish Airlines Logo
7:05 pm - 11:20 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
26h 30m1 stop Istanbul
Turkish Airlines Logo
12:45 pm - 5:10 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
42h 10m1 stop Istanbul
$1,136Turkish Airlines
Wed, Nov 25 - Wed, Dec 16
Turkish Airlines Logo
7:05 pm - 11:20 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
26h 30m1 stop Istanbul
Turkish Airlines Logo
12:45 pm - 5:10 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
42h 10m1 stop Istanbul
$1,192Turkish Airlines
Wed, Nov 25 - Wed, Dec 16
Emirates Logo
4:05 pm - 11:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
41h 40m1 stop Dubai Intl
Emirates Logo
9:20 am - 12:35 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
41h 00m1 stop Dubai Intl
$1,940Emirates
Wed, Jan 20 - Sun, Jan 31
Emirates Logo
4:05 pm - 6:35 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
24h 45m1 stop Dubai Intl
Emirates Logo
9:20 am - 10:32 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
50h 57m2 stops Dubai Intl Chicago O'Hare Intl
$2,137Emirates
Mon, Nov 23 - Fri, Dec 18

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Singapore Airlines flights from Seattle to Kathmandu

Our best Singapore Airlines deals on Seattle to Kathmandu flight tickets
Singapore Airlines
Jan 1
SEA8:40 amSeattle/Tacoma Intl
23h 25m
1 stop
KTM9:50 pmKathmandu Tribhuvan
Jan 31
KTM10:55 pmKathmandu Tribhuvan
69h 55m
1 stop
SEA7:05 amSeattle/Tacoma Intl
$1,002
Singapore Airlines
Mar 14
SEA9:40 amSeattle/Tacoma Intl
71h 15m
1 stop
KTM9:40 pmKathmandu Tribhuvan
Jun 14
KTM10:50 pmKathmandu Tribhuvan
22h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,010
Singapore Airlines
Feb 24
SEA8:40 amSeattle/Tacoma Intl
71h 25m
1 stop
KTM9:50 pmKathmandu Tribhuvan
Mar 3
KTM10:55 pmKathmandu Tribhuvan
69h 55m
1 stop
SEA7:05 amSeattle/Tacoma Intl
$1,019

Air India flights from Seattle to Kathmandu

Our best Air India deals on Seattle to Kathmandu flight tickets
Air India
Feb 23
SEA8:10 amSeattle/Tacoma Intl
32h 40m
3 stops
KTM6:35 amKathmandu Tribhuvan
Mar 10
KTM9:40 pmKathmandu Tribhuvan
35h 01m
2 stops
SEA6:56 pmSeattle/Tacoma Intl
$1,036
Air India
Jan 18
SEA10:40 pmSeattle/Tacoma Intl
32h 15m
2 stops
KTM8:40 pmKathmandu Tribhuvan
Feb 1
KTM2:55 pmKathmandu Tribhuvan
34h 33m
2 stops
SEA11:43 amSeattle/Tacoma Intl
$1,051
Air India
Feb 12
SEA9:40 pmSeattle/Tacoma Intl
33h 15m
2 stops
KTM8:40 pmKathmandu Tribhuvan
Feb 23
KTM9:40 pmKathmandu Tribhuvan
27h 35m
2 stops
SEA11:30 amSeattle/Tacoma Intl
$1,054

momondo Fare Finder

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

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Fri 1/1

8:40 am-9:50 pm

1 stop23h 25m

Kathmandu Tribhuvan

Sun 1/31

10:55 pm-7:05 am

1 stop69h 55m

$1,002

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Sun 3/14

9:40 am-9:40 pm

1 stop71h 15m

Kathmandu Tribhuvan

Mon 6/14

10:50 pm-8:45 am

1 stop22h 40m

$1,010

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Tue 2/23

8:10 am-6:35 am

3 stops32h 40m

Kathmandu Tribhuvan

Wed 3/10

9:40 pm-6:56 pm

2 stops35h 01m

$1,036

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 11/25

8:35 pm-9:05 am

3 stops46h 45m

Kathmandu Tribhuvan

Tue 12/15

6:30 am-8:04 pm

2 stops27h 19m

$1,041

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Mon 1/18

3:50 pm-4:25 pm

1 stop34h 50m

Kathmandu Tribhuvan

Mon 2/1

5:40 pm-11:40 am

1 stop31h 45m

$1,077
Quickest round-trip

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Tue 1/19

3:50 pm-8:20 am

1 stop26h 45m

Kathmandu Tribhuvan

Mon 2/1

6:45 pm-11:40 am

1 stop30h 40m

$1,080

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 11/25

7:05 pm-11:20 am

1 stop26h 30m

Kathmandu Tribhuvan

Wed 12/16

12:45 pm-5:10 pm

1 stop42h 10m

$1,136

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 11/25

7:05 pm-11:20 am

1 stop26h 30m

Kathmandu Tribhuvan

Wed 12/16

12:45 pm-5:10 pm

1 stop42h 10m

$1,192

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 1/20

4:05 pm-11:30 pm

1 stop41h 40m

Kathmandu Tribhuvan

Sun 1/31

9:20 am-12:35 pm

1 stop41h 00m

$1,940

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Mon 11/23

4:05 pm-6:35 am

1 stop24h 45m

Kathmandu Tribhuvan

Fri 12/18

9:20 am-10:32 pm

2 stops50h 57m

$2,137

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 Kathmandu from

How to get the cheapest flight ticket from Seattle to Kathmandu

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 Seattle and Kathmandu?

Prices are currently low for flights on this route.

Typical prices usually range from $1,036 to $1,519.
The lowest price recently found on this route was $1,002.

What is the cheapest month to fly to Kathmandu?

The month of March is another great option to travel to Kathmandu, with average flight prices from Seattle averaging around $1,064.

How far in advance should I book a flight from Seattle to Kathmandu?

You are more likely to see cheaper flights to Kathmandu from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Kathmandu for around $1,246 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kathmandu from Seattle for as low as $1,037 on momondo.

How have Seattle to Kathmandu flight prices changed over time?

As of September 2026, prices for Seattle to Kathmandu flights are approximately 55% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Kathmandu

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Kathmandu according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Kathmandu (SEA to KTM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Kathmandu

Best Price Found

$508

Fastest flight time

22h 30m

Direct flights

None
The best one-way flight to Kathmandu from Seattle in the past 72 hours is $508. The best round-trip flight deal from Seattle to Kathmandu found on momondo in the last 72 hours is $1,002.
The fastest flight from Seattle to Kathmandu takes 22h 30m
There are no direct flights from Seattle to Kathmandu. There are no popular flight routes from Seattle to Kathmandu.
Search flight deals

Frequently asked questions about flying from Seattle to Kathmandu

  • How far is Seattle/Tacoma Intl to Kathmandu Tribhuvan by plane?

    A flight from Seattle/Tacoma Intl to Kathmandu Tribhuvan will travel around 6950.3 mi. In terms of flight time, this usually takes a little over 22h 30m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport.

  • What documentation or ID do you need to fly to Kathmandu Tribhuvan Airport?

    The travel and health documents you'll need for your trip to Kathmandu Tribhuvan Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Kathmandu Tribhuvan Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Kathmandu?

Best airlines flying from Seattle to Kathmandu

Compare and see reviews for airlines that fly from Seattle to Kathmandu with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $812Free CancellationRating
8.2
1,606 reviews
Search Singapore Airlines flights
Cathay PacificPriceFrom $903Free CancellationRating
7.6
1,490 reviews
Search Cathay Pacific flights
Qatar AirwaysPriceFrom $944Free CancellationRating
7.3
3,731 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $979Free CancellationRating
7.4
4,466 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,212Free CancellationRating
8.1
3,662 reviews
Search Emirates flights

Traveling to a place near Kathmandu?

Book flights to Kathmandu if you plan to visit one of these locations
Nagarkot

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Kathmandu?

It is quick and easy to find Seattle to Kathmandu flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Kathmandu that suits you.

Can I find flights from Seattle to Kathmandu with flexible booking policies on momondo?

momondo does allow users to show only those flights to Kathmandu from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Kathmandu?

momondo provides multiple filters to help you find the best flight to Kathmandu from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to Kathmandu right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Kathmandu, momondo offers a useful price alert feature which will track prices for flights to Kathmandu from Seattle and alert you when they change.

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Qatar Airways
Singapore Airlines
Cathay Pacific
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Emirates