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Cheap flights from Seattle to Kathmandu from $371

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Kathmandu departing on 4/26. 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 Seattle to Kathmandu

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:10 pm - 9:50 am
SEA
-
KTM
28h 55m
2 stops
Multiple Airlines Logo
10:50 am - 4:59 pm
KTM
-
SEA
42h 54m
2 stops
$928Multiple Airlines
Fri, Mar 20 - Tue, Apr 7
Multiple Airlines Logo
4:10 pm - 9:50 am
SEA
-
KTM
28h 55m
2 stops
Multiple Airlines Logo
10:50 am - 12:20 pm
KTM
-
SEA
38h 15m
2 stops
$939Multiple Airlines
Fri, Mar 20 - Tue, Apr 7
Multiple Airlines Logo
7:10 pm - 3:40 pm
SEA
-
KTM
31h 45m
2 stops
Multiple Airlines Logo
4:40 pm - 5:15 pm
KTM
-
SEA
37h 20m
2 stops
$941Multiple Airlines
Tue, Mar 31 - Wed, May 6
Singapore Airlines Logo
8:45 am - 9:40 pm
SEA
-
KTM
23h 10m
1 stop
Singapore Airlines Logo
11:05 pm - 8:10 am
KTM
-
SEA
21h 50m
1 stop
$967Singapore Airlines
Tue, Mar 3 - Wed, Mar 18
Multiple Airlines Logo
5:05 pm - 9:50 am
SEA
-
KTM
28h 00m
2 stops
Multiple Airlines Logo
10:50 am - 12:40 pm
KTM
-
SEA
38h 35m
2 stops
$988Multiple Airlines
Mon, Mar 9 - Wed, Mar 18
Multiple Airlines Logo
4:05 pm - 4:10 pm
SEA
-
KTM
34h 20m
2 stops
Multiple Airlines Logo
10:50 am - 12:40 pm
KTM
-
SEA
38h 35m
2 stops
$999Multiple Airlines
Sun, Feb 22 - Wed, Mar 18
Turkish Airlines Logo
10:55 am - 11:10 am
SEA
-
KTM
34h 30m
2 stops
Turkish Airlines Logo
12:35 pm - 6:05 pm
KTM
-
SEA
42h 15m
1 stop
$1,002Turkish Airlines
Tue, Feb 24 - Thu, Mar 19
Turkish Airlines Logo
7:00 pm - 11:10 am
SEA
-
KTM
26h 25m
1 stop
Turkish Airlines Logo
12:35 pm - 6:05 pm
KTM
-
SEA
42h 15m
1 stop
$1,003Turkish Airlines
Sun, Feb 22 - Wed, Mar 18
Turkish Airlines Logo
7:00 pm - 11:10 am
SEA
-
KTM
26h 25m
1 stop
Turkish Airlines Logo
12:35 pm - 7:03 pm
KTM
-
SEA
43h 13m
2 stops
$1,004Turkish Airlines
Mon, Mar 2 - Tue, Mar 17
Multiple Airlines Logo
8:15 am - 4:25 pm
SEA
-
KTM
42h 25m
2 stops
Multiple Airlines Logo
9:10 am - 6:40 pm
KTM
-
SEA
46h 15m
2 stops
$1,008Multiple Airlines
Mon, Feb 23 - Tue, Mar 10

Turkish Airlines flights from Seattle to Kathmandu

Our best Turkish Airlines deals on Seattle to Kathmandu flight tickets
Turkish Airlines
Feb 24
SEA10:55 amSeattle/Tacoma Intl
34h 30m
2 stops
KTM11:10 amKathmandu Tribhuvan
Mar 19
KTM12:35 pmKathmandu Tribhuvan
42h 15m
1 stop
SEA6:05 pmSeattle/Tacoma Intl
$1,002
Turkish Airlines
Feb 22
SEA7:00 pmSeattle/Tacoma Intl
26h 25m
1 stop
KTM11:10 amKathmandu Tribhuvan
Mar 18
KTM12:35 pmKathmandu Tribhuvan
42h 15m
1 stop
SEA6:05 pmSeattle/Tacoma Intl
$1,003
Turkish Airlines
Mar 2
SEA7:00 pmSeattle/Tacoma Intl
26h 25m
1 stop
KTM11:10 amKathmandu Tribhuvan
Mar 17
KTM12:35 pmKathmandu Tribhuvan
43h 13m
2 stops
SEA7:03 pmSeattle/Tacoma Intl
$1,004

Cathay Pacific flights from Seattle to Kathmandu

Our best Cathay Pacific deals on Seattle to Kathmandu flight tickets
Cathay Pacific
Mar 31
SEA6:00 amSeattle/Tacoma Intl
51h 00m
2 stops
KTM9:45 pmKathmandu Tribhuvan
May 6
KTM11:00 pmKathmandu Tribhuvan
23h 50m
1 stop
SEA10:05 amSeattle/Tacoma Intl
$1,088
Cathay Pacific
Mar 19
SEA6:25 amSeattle/Tacoma Intl
50h 20m
2 stops
KTM9:30 pmKathmandu Tribhuvan
Apr 8
KTM11:00 pmKathmandu Tribhuvan
23h 50m
1 stop
SEA10:05 amSeattle/Tacoma Intl
$1,109
Cathay Pacific
Mar 8
SEA5:50 pmSeattle/Tacoma Intl
62h 55m
2 stops
KTM9:30 pmKathmandu Tribhuvan
Apr 12
KTM11:00 pmKathmandu Tribhuvan
23h 50m
1 stop
SEA10:05 amSeattle/Tacoma Intl
$1,122

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Kathmandu 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 January 31, 2026.
Use the filters below to find and compare flights from Seattle to Kathmandu that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Fri 3/20

4:10 pm-9:50 am

2 stops28h 55m

Kathmandu Tribhuvan

Tue 4/7

10:50 am-4:59 pm

2 stops42h 54m

$928

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Fri 3/20

4:10 pm-9:50 am

2 stops28h 55m

Kathmandu Tribhuvan

Tue 4/7

10:50 am-12:20 pm

2 stops38h 15m

$939

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 3/31

7:10 pm-3:40 pm

2 stops31h 45m

Kathmandu Tribhuvan

Wed 5/6

4:40 pm-5:15 pm

2 stops37h 20m

$941

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 3/3

8:45 am-9:40 pm

1 stop23h 10m

Kathmandu Tribhuvan

Wed 3/18

11:05 pm-8:10 am

1 stop21h 50m

$967

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 3/9

5:05 pm-9:50 am

2 stops28h 00m

Kathmandu Tribhuvan

Wed 3/18

10:50 am-12:40 pm

2 stops38h 35m

$988

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sun 2/22

4:05 pm-4:10 pm

2 stops34h 20m

Kathmandu Tribhuvan

Wed 3/18

10:50 am-12:40 pm

2 stops38h 35m

$999

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 2/24

10:55 am-11:10 am

2 stops34h 30m

Kathmandu Tribhuvan

Thu 3/19

12:35 pm-6:05 pm

1 stop42h 15m

$1,002

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sun 2/22

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

Wed 3/18

12:35 pm-6:05 pm

1 stop42h 15m

$1,003

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 3/2

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

Tue 3/17

12:35 pm-7:03 pm

2 stops43h 13m

$1,004

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 2/23

8:15 am-4:25 pm

2 stops42h 25m

Kathmandu Tribhuvan

Tue 3/10

9:10 am-6:40 pm

2 stops46h 15m

$1,008

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 cheapest month to fly to Kathmandu?

The month of October is another great option to travel to Kathmandu, with average flight prices from Seattle averaging around $1,197.

How far in advance should I book a flight 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 $1,328 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 $1,000 on momondo.

How have Seattle to Kathmandu flight prices changed over time?

As of January 2026, prices for Seattle to Kathmandu flights are approximately 48% 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

Fastest flight time

22h 30m

Direct flights

None
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

  • 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 $897Free CancellationRating
8.2
1,443 reviews
Search Singapore Airlines flights
Qatar AirwaysPriceFrom $984Free CancellationRating
7.4
3,728 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $1,015Free CancellationRating
7.3
4,210 reviews
Search Turkish Airlines flights
Cathay PacificPriceFrom $1,034Free CancellationRating
7.6
1,153 reviews
Search Cathay Pacific flights
EmiratesPriceFrom $1,138Free CancellationRating
8.1
3,491 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.

An easier way to manage your Kathmandu trip

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Fly your favorite airline to Kathmandu

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Singapore Airlines
Turkish Airlines
Qatar Airways
Emirates
Cathay Pacific