Cheap flights from Seattle to Kathmandu from $576

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 - 9:55 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
23h 30m1 stop Singapore Changi
Singapore Airlines Logo
10:55 pm - 8:05 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
45h 55m1 stop Singapore Changi
$1,066Singapore Airlines
Fri, Mar 5 - Mon, Mar 22
Singapore Airlines Logo
9:40 am - 9:55 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
47h 30m1 stop Singapore Changi
Singapore Airlines Logo
10:50 pm - 8:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
46h 40m1 stop Singapore Changi
$1,070Singapore Airlines
Fri, Mar 19 - Sun, Mar 28
Multiple Airlines Logo
9:40 pm - 4:10 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
29h 45m2 stops Newark New Delhi Indira Gandhi Intl
Multiple Airlines Logo
7:35 am - 7:57 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
25h 07m2 stops New Delhi Indira Gandhi Intl San Francisco
$1,087Multiple Airlines
Mon, Mar 22 - Sat, Apr 3
Qatar Airways Logo
4:25 pm - 4:45 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
35h 35m1 stop Doha Hamad Intl
Qatar Airways Logo
10:05 am - 12:55 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
39h 35m1 stop Doha Hamad Intl
$1,153Qatar Airways
Sun, Apr 11 - Thu, Apr 22
Qatar Airways Logo
3:35 pm - 4:15 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
34h 55m1 stop Doha Hamad Intl
Qatar Airways Logo
10:05 am - 12:55 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
39h 35m1 stop Doha Hamad Intl
$1,153Qatar Airways
Wed, Mar 3 - Tue, Mar 30
Multiple Airlines Logo
9:40 pm - 4:10 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
29h 45m2 stops Newark New Delhi Indira Gandhi Intl
Multiple Airlines Logo
6:30 am - 11:24 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
29h 39m2 stops New Delhi Indira Gandhi Intl San Francisco
$1,157Multiple Airlines
Sun, Apr 11 - Thu, Apr 22
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 - 6:10 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
42h 10m1 stop Istanbul
$1,185Turkish Airlines
Mon, Mar 8 - Wed, Mar 17
Turkish Airlines Logo
7:20 pm - 6:05 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
22h 00m1 stop Istanbul
Turkish Airlines Logo
7:30 am - 5:35 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
22h 50m1 stop Istanbul
$1,395Turkish Airlines
Wed, May 5 - Sun, May 9
Cathay Pacific Logo
10:25 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
21h 20m1 stop Hong Kong Intl
Cathay Pacific Logo
10:45 pm - 8:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
23h 45m1 stop Hong Kong Intl
$1,956Cathay Pacific
Thu, Nov 19 - Mon, Nov 23
Cathay Pacific Logo
10:25 am - 9:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
21h 20m1 stop Hong Kong Intl
Cathay Pacific Logo
10:45 pm - 8:45 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
23h 45m1 stop Hong Kong Intl
$1,956Cathay Pacific
Thu, Nov 19 - Tue, Nov 24

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Qatar Airways flights from Seattle to Kathmandu

Our best Qatar Airways deals on Seattle to Kathmandu flight tickets
Qatar Airways
Apr 11
SEA4:25 pmSeattle/Tacoma Intl
35h 35m
1 stop
KTM4:45 pmKathmandu Tribhuvan
Apr 22
KTM10:05 amKathmandu Tribhuvan
39h 35m
1 stop
SEA12:55 pmSeattle/Tacoma Intl
$1,153
Qatar Airways
Feb 22
SEA3:50 pmSeattle/Tacoma Intl
34h 40m
1 stop
KTM4:15 pmKathmandu Tribhuvan
Mar 4
KTM5:30 pmKathmandu Tribhuvan
31h 55m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,156
Qatar Airways
Mar 21
SEA4:35 pmSeattle/Tacoma Intl
36h 25m
1 stop
KTM5:45 pmKathmandu Tribhuvan
Apr 2
KTM10:05 amKathmandu Tribhuvan
39h 35m
1 stop
SEA12:55 pmSeattle/Tacoma Intl
$1,161

Singapore Airlines flights from Seattle to Kathmandu

Our best Singapore Airlines deals on Seattle to Kathmandu flight tickets
Singapore Airlines
Mar 5
SEA8:40 amSeattle/Tacoma Intl
23h 30m
1 stop
KTM9:55 pmKathmandu Tribhuvan
Mar 22
KTM10:55 pmKathmandu Tribhuvan
45h 55m
1 stop
SEA8:05 amSeattle/Tacoma Intl
$1,066
Singapore Airlines
Mar 19
SEA9:40 amSeattle/Tacoma Intl
47h 30m
1 stop
KTM9:55 pmKathmandu Tribhuvan
Mar 28
KTM10:50 pmKathmandu Tribhuvan
46h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,070
Singapore Airlines
Mar 3
SEA8:40 amSeattle/Tacoma Intl
23h 30m
1 stop
KTM9:55 pmKathmandu Tribhuvan
Mar 31
KTM10:50 pmKathmandu Tribhuvan
70h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,073

momondo Fare Finder

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

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Route

Depart

Return

Price

Cheapest round-trip

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Fri 3/5

8:40 am-9:55 pm

1 stop23h 30m

Kathmandu Tribhuvan

Mon 3/22

10:55 pm-8:05 am

1 stop45h 55m

$1,066

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Fri 3/19

9:40 am-9:55 pm

1 stop47h 30m

Kathmandu Tribhuvan

Sun 3/28

10:50 pm-8:45 am

1 stop46h 40m

$1,070

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Mon 3/22

9:40 pm-4:10 pm

2 stops29h 45m

Kathmandu Tribhuvan

Sat 4/3

7:35 am-7:57 pm

2 stops25h 07m

$1,087

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Sun 4/11

4:25 pm-4:45 pm

1 stop35h 35m

Kathmandu Tribhuvan

Thu 4/22

10:05 am-12:55 pm

1 stop39h 35m

$1,153

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 3/3

3:35 pm-4:15 pm

1 stop34h 55m

Kathmandu Tribhuvan

Tue 3/30

10:05 am-12:55 pm

1 stop39h 35m

$1,153

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Sun 4/11

9:40 pm-4:10 pm

2 stops29h 45m

Kathmandu Tribhuvan

Thu 4/22

6:30 am-11:24 pm

2 stops29h 39m

$1,157

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Mon 3/8

7:05 pm-11:20 am

1 stop26h 30m

Kathmandu Tribhuvan

Wed 3/17

12:45 pm-6:10 pm

1 stop42h 10m

$1,185
Quickest round-trip

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 5/5

7:20 pm-6:05 am

1 stop22h 00m

Kathmandu Tribhuvan

Sun 5/9

7:30 am-5:35 pm

1 stop22h 50m

$1,395

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Thu 11/19

10:25 am-9:30 pm

1 stop21h 20m

Kathmandu Tribhuvan

Mon 11/23

10:45 pm-8:45 am

1 stop23h 45m

$1,956

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Thu 11/19

10:25 am-9:30 pm

1 stop21h 20m

Kathmandu Tribhuvan

Tue 11/24

10:45 pm-8:45 am

1 stop23h 45m

$1,956

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 $1,255 to $1,592.
The lowest price recently found on this route was $1,066.

What is the cheapest month to fly to Kathmandu?

The month of February is another great option to travel to Kathmandu, with average flight prices from Seattle averaging around $1,050.

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 $1,249 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 $1,060 on momondo.

How have Seattle to Kathmandu flight prices changed over time?

As of November 2026, prices for Seattle to Kathmandu flights are approximately 18% 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

$576

Fastest flight time

22h 30m

Direct flights

None
The best one-way flight to Kathmandu from Seattle in the past 72 hours is $576. The best round-trip flight deal from Seattle to Kathmandu found on momondo in the last 72 hours is $1,066.
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.

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
1,632 reviews
Search Singapore Airlines flights
Cathay PacificPriceFrom $903Free CancellationRating
7.6
1,541 reviews
Search Cathay Pacific flights
Qatar AirwaysPriceFrom $966Free CancellationRating
7.4
3,707 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $979Free CancellationRating
7.4
4,468 reviews
Search Turkish Airlines 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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