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Cheap flights from Seattle to Kathmandu from $532

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 8/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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
8:45 am - 9:50 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
23h 20m1 stop Singapore Changi
Singapore Airlines Logo
10:55 pm - 7:10 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
46h 00m1 stop Singapore Changi
$1,013Singapore Airlines
Sat, Jan 16 - Sun, Jan 31
Singapore Airlines Logo
8:45 am - 9:50 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
23h 20m1 stop Singapore Changi
Singapore Airlines Logo
10:55 pm - 7:10 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
22h 00m1 stop Singapore Changi
$1,043Singapore Airlines
Wed, Jan 6 - Fri, Feb 5
Qatar Airways Logo
4:25 pm - 8:50 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
27h 40m1 stop Doha Hamad Intl
Qatar Airways Logo
6:45 pm - 12:45 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 45m1 stop Doha Hamad Intl
$1,077Qatar Airways
Tue, Sep 15 - Tue, Sep 22
Qatar Airways Logo
4:25 pm - 8:50 amSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
27h 40m1 stop Doha Hamad Intl
Qatar Airways Logo
6:45 pm - 12:45 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 45m1 stop Doha Hamad Intl
$1,077Qatar Airways
Thu, Sep 10 - Thu, Sep 24
Multiple Airlines Logo
10:47 am - 5:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
41h 58m2 stops San Francisco Doha Hamad Intl
Multiple Airlines Logo
5:40 pm - 11:40 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
31h 45m1 stop Doha Hamad Intl
$1,090Multiple Airlines
Tue, Sep 22 - Tue, Dec 22
Multiple Airlines Logo
10:47 am - 5:30 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
41h 58m2 stops San Francisco Doha Hamad Intl
Multiple Airlines Logo
6:45 pm - 12:25 pmKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
30h 25m1 stop Doha Hamad Intl
$1,090Multiple Airlines
Tue, Sep 22 - Wed, Oct 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
$1,163Turkish 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
$1,459Turkish Airlines
Mon, Nov 30 - Tue, Dec 29
Cathay Pacific Logo
12:25 pm - 9:45 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
20h 35m1 stop Hong Kong Intl
Cathay Pacific Logo
10:55 pm - 9:10 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
24h 00m1 stop Hong Kong Intl
$1,955Cathay Pacific
Wed, Sep 9 - Wed, Jan 13
Cathay Pacific Logo
12:25 pm - 9:45 pmSEA  Seattle/Tacoma Intl-KTM Kathmandu Tribhuvan
20h 35m1 stop Hong Kong Intl
Cathay Pacific Logo
10:55 pm - 9:10 amKTM  Kathmandu Tribhuvan-SEA Seattle/Tacoma Intl
24h 00m1 stop Hong Kong Intl
$1,955Cathay Pacific
Wed, Sep 9 - Mon, Jan 11

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Qatar Airways flights from Seattle to Kathmandu

Our best Qatar Airways deals on Seattle to Kathmandu flight tickets
Qatar Airways
Sep 10
SEA4:25 pmSeattle/Tacoma Intl
27h 40m
1 stop
KTM8:50 amKathmandu Tribhuvan
Sep 24
KTM6:45 pmKathmandu Tribhuvan
30h 45m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
$1,077
Qatar Airways
Sep 16
SEA4:25 pmSeattle/Tacoma Intl
27h 40m
1 stop
KTM8:50 amKathmandu Tribhuvan
Oct 27
KTM5:40 pmKathmandu Tribhuvan
31h 45m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
$1,079
Qatar Airways
Sep 1
SEA4:25 pmSeattle/Tacoma Intl
35h 35m
1 stop
KTM4:45 pmKathmandu Tribhuvan
Sep 16
KTM6:00 pmKathmandu Tribhuvan
31h 30m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
$1,080

Singapore Airlines flights from Seattle to Kathmandu

Our best Singapore Airlines deals on Seattle to Kathmandu flight tickets
Singapore Airlines
Jan 16
SEA8:45 amSeattle/Tacoma Intl
23h 20m
1 stop
KTM9:50 pmKathmandu Tribhuvan
Jan 31
KTM10:55 pmKathmandu Tribhuvan
46h 00m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$1,013
Singapore Airlines
Jan 6
SEA8:45 amSeattle/Tacoma Intl
23h 20m
1 stop
KTM9:50 pmKathmandu Tribhuvan
Feb 5
KTM10:55 pmKathmandu Tribhuvan
22h 00m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$1,043
Singapore Airlines
Dec 25
SEA8:45 amSeattle/Tacoma Intl
23h 20m
1 stop
KTM9:50 pmKathmandu Tribhuvan
Jan 26
KTM10:55 pmKathmandu Tribhuvan
70h 00m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$1,056

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 August 17, 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

Cheapest round-trip

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Sat 1/16

8:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

Sun 1/31

10:55 pm-7:10 am

1 stop46h 00m

$1,013

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 1/6

8:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

Fri 2/5

10:55 pm-7:10 am

1 stop22h 00m

$1,043

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Tue 9/15

4:25 pm-8:50 am

1 stop27h 40m

Kathmandu Tribhuvan

Tue 9/22

6:45 pm-12:45 pm

1 stop30h 45m

$1,077

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Thu 9/10

4:25 pm-8:50 am

1 stop27h 40m

Kathmandu Tribhuvan

Thu 9/24

6:45 pm-12:45 pm

1 stop30h 45m

$1,077

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Tue 9/22

10:47 am-5:30 pm

2 stops41h 58m

Kathmandu Tribhuvan

Tue 12/22

5:40 pm-11:40 am

1 stop31h 45m

$1,090

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Tue 9/22

10:47 am-5:30 pm

2 stops41h 58m

Kathmandu Tribhuvan

Wed 10/14

6:45 pm-12:25 pm

1 stop30h 25m

$1,090

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

$1,163

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Mon 11/30

7:05 pm-11:20 am

1 stop26h 30m

Kathmandu Tribhuvan

Tue 12/29

12:45 pm-5:10 pm

1 stop42h 10m

$1,459
Quickest round-trip

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 9/9

12:25 pm-9:45 pm

1 stop20h 35m

Kathmandu Tribhuvan

Wed 1/13

10:55 pm-9:10 am

1 stop24h 00m

$1,955

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 9/9

12:25 pm-9:45 pm

1 stop20h 35m

Kathmandu Tribhuvan

Mon 1/11

10:55 pm-9:10 am

1 stop24h 00m

$1,955

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $1,072 to $1,464.
The lowest price recently found on this route was $1,013.

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 $1,096.

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 $1,270 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 $989 on momondo.

How have Seattle to Kathmandu flight prices changed over time?

As of August 2026, prices for Seattle to Kathmandu flights are approximately 55% more expensive 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

$532

Fastest flight time

20h 55m

Direct flights

None
The best one-way flight to Kathmandu from Seattle in the past 72 hours is $532. The best round-trip flight deal from Seattle to Kathmandu found on momondo in the last 72 hours is $1,013.
The fastest flight from Seattle to Kathmandu takes 20h 55m
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 20h 55m.

  • 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 $813Free CancellationRating
8.2
1,584 reviews
Search Singapore Airlines flights
Cathay PacificPriceFrom $903Free CancellationRating
7.6
1,453 reviews
Search Cathay Pacific flights
Qatar AirwaysPriceFrom $944Free CancellationRating
7.4
3,738 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $986Free CancellationRating
7.4
4,472 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,212Free CancellationRating
8.1
3,652 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
Qatar Airways
Cathay Pacific
Turkish Airlines
Emirates