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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
45h 55m1 stop Singapore Changi
$1,022Singapore Airlines
Sat, Jan 16 - Sun, Jan 31
Singapore Airlines Logo
8:40 am - 9:50 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
71h 25m1 stop Singapore Changi
Singapore Airlines Logo
10:55 pm - 7:05 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
45h 55m1 stop Singapore Changi
$1,039Singapore Airlines
Wed, Nov 25 - Wed, Feb 17
Qatar Airways Logo
4:25 pm - 5:45 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
36h 35m1 stop Doha Hamad Intl
Qatar Airways Logo
7:00 pm - 12:25 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 10m1 stop Doha Hamad Intl
$1,056Qatar Airways
Sun, Sep 27 - Tue, Oct 13
Air India Logo
7:55 pm - 6:35 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
44h 55m3 stops San Francisco Vienna Intl New Delhi Indira Gandhi Intl
Air India Logo
9:40 pm - 1:38 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
29h 43m2 stops New Delhi Indira Gandhi Intl San Francisco
$1,057Air India
Tue, Dec 8 - Tue, Feb 23
Qatar Airways Logo
4:50 pm - 5:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
35h 55m1 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
$1,072Qatar Airways
Wed, Oct 28 - Wed, Nov 4
Air India Logo
9:40 pm - 8:40 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
33h 15m2 stops Newark New Delhi Indira Gandhi Intl
Air India Logo
6:30 am - 11:30 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
41h 45m2 stops New Delhi Indira Gandhi Intl San Francisco
$1,081Air India
Mon, Mar 1 - Wed, Apr 14
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
$1,288Turkish Airlines
Tue, Jan 19 - Sun, Jan 31
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
$1,288Turkish Airlines
Mon, Jan 18 - Sun, Jan 31
Emirates Logo
4:05 pm - 11:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
41h 40m1 stop Dubai Intl
Emirates Logo
7:40 pm - 12:35 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 40m1 stop Dubai Intl
$1,940Emirates
Wed, Jan 20 - Sun, Jan 31
Emirates Logo
4:05 pm - 11:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
41h 40m1 stop Dubai Intl
Emirates Logo
12:30 am - 12:35 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
25h 50m1 stop Dubai Intl
$2,326Emirates
Sun, Dec 6 - Tue, Feb 23

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Air India flights from Seattle to Kathmandu

Our best Air India deals on Seattle to Kathmandu flight tickets
Air India
Dec 8
SEA7:55 pmSeattle/Tacoma Intl
44h 55m
3 stops
KTM6:35 amKathmandu Tribhuvan
Feb 23
KTM9:40 pmKathmandu Tribhuvan
29h 43m
2 stops
SEA1:38 pmSeattle/Tacoma Intl
$1,057
Air India
Mar 1
SEA9:40 pmSeattle/Tacoma Intl
33h 15m
2 stops
KTM8:40 pmKathmandu Tribhuvan
Apr 14
KTM6:30 amKathmandu Tribhuvan
41h 45m
2 stops
SEA11:30 amSeattle/Tacoma Intl
$1,081
Air India
Sep 27
SEA10:01 pmSeattle/Tacoma Intl
33h 24m
2 stops
KTM8:10 pmKathmandu Tribhuvan
Oct 12
KTM10:05 amKathmandu Tribhuvan
39h 36m
2 stops
SEA12:56 pmSeattle/Tacoma Intl
$1,084

Singapore Airlines flights from Seattle to Kathmandu

Our best Singapore Airlines deals on Seattle to Kathmandu flight tickets
Singapore Airlines
Jan 16
SEA8:40 amSeattle/Tacoma Intl
23h 25m
1 stop
KTM9:50 pmKathmandu Tribhuvan
Jan 31
KTM10:55 pmKathmandu Tribhuvan
45h 55m
1 stop
SEA7:05 amSeattle/Tacoma Intl
$1,022
Singapore Airlines
Nov 25
SEA8:40 amSeattle/Tacoma Intl
71h 25m
1 stop
KTM9:50 pmKathmandu Tribhuvan
Feb 17
KTM10:55 pmKathmandu Tribhuvan
45h 55m
1 stop
SEA7:05 amSeattle/Tacoma Intl
$1,039
Singapore Airlines
Oct 18
SEA10:15 amSeattle/Tacoma Intl
70h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
Nov 1
KTM10:55 pmKathmandu Tribhuvan
69h 55m
1 stop
SEA7:05 amSeattle/Tacoma Intl
$1,101

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

Sat 1/16

8:40 am-9:50 pm

1 stop23h 25m

Kathmandu Tribhuvan

Sun 1/31

10:55 pm-7:05 am

1 stop45h 55m

$1,022

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 11/25

8:40 am-9:50 pm

1 stop71h 25m

Kathmandu Tribhuvan

Wed 2/17

10:55 pm-7:05 am

1 stop45h 55m

$1,039
Quickest round-trip

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Sun 9/27

4:25 pm-5:45 pm

1 stop36h 35m

Kathmandu Tribhuvan

Tue 10/13

7:00 pm-12:25 pm

1 stop30h 10m

$1,056

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Tue 12/8

7:55 pm-6:35 am

3 stops44h 55m

Kathmandu Tribhuvan

Tue 2/23

9:40 pm-1:38 pm

2 stops29h 43m

$1,057

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 10/28

4:50 pm-5:30 pm

1 stop35h 55m

Kathmandu Tribhuvan

Wed 11/4

5:40 pm-11:40 am

1 stop31h 45m

$1,072

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Mon 3/1

9:40 pm-8:40 pm

2 stops33h 15m

Kathmandu Tribhuvan

Wed 4/14

6:30 am-11:30 am

2 stops41h 45m

$1,081

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Tue 1/19

7:05 pm-11:20 am

1 stop26h 30m

Kathmandu Tribhuvan

Sun 1/31

12:45 pm-5:10 pm

1 stop42h 10m

$1,288

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Mon 1/18

7:05 pm-11:20 am

1 stop26h 30m

Kathmandu Tribhuvan

Sun 1/31

12:45 pm-5:10 pm

1 stop42h 10m

$1,288

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

7:40 pm-12:35 pm

1 stop30h 40m

$1,940

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Sun 12/6

4:05 pm-11:30 pm

1 stop41h 40m

Kathmandu Tribhuvan

Tue 2/23

12:30 am-12:35 pm

1 stop25h 50m

$2,326

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 typical for flights on this route.

Typical prices usually range from $970 to $1,843.
The lowest price recently found on this route was $1,022.

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 $1,245 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

23h 25m

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 $1,022.
The fastest flight from Seattle to Kathmandu takes 23h 25m
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 23h 25m.

  • 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
1,602 reviews
Search Singapore Airlines flights
Cathay PacificPriceFrom $903Free CancellationRating
7.6
1,486 reviews
Search Cathay Pacific flights
Qatar AirwaysPriceFrom $944Free CancellationRating
7.4
3,732 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $979Free CancellationRating
7.4
4,468 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,212Free CancellationRating
8.1
3,659 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