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Cheap flights from Seattle to Kathmandu from $463

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 3/1. 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
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.
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
Singapore Airlines Logo
10:50 pm - 8:45 am
KTM
-
SEA
46h 40m
1 stop
$921Singapore Airlines
Tue, Apr 21 - Sun, May 17
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
Singapore Airlines Logo
10:50 pm - 8:45 am
KTM
-
SEA
46h 40m
1 stop
$962Singapore Airlines
Sat, May 2 - Sun, May 17
Qatar Airways Logo
4:05 pm - 4:25 pm
SEA
-
KTM
34h 35m
1 stop
Qatar Airways Logo
9:10 am - 12:40 pm
KTM
-
SEA
40h 15m
1 stop
$980Qatar Airways
Mon, Mar 2 - Tue, Mar 10
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 - Sat, Mar 14
Turkish Airlines Logo
7:00 pm - 11:10 am
SEA
-
KTM
26h 25m
1 stop
Turkish Airlines Logo
12:35 pm - 5:05 pm
KTM
-
SEA
42h 15m
1 stop
$1,014Turkish Airlines
Sun, Jan 25 - Thu, Mar 5
Multiple Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
Multiple Airlines Logo
10:50 pm - 6:11 pm
KTM
-
SEA
32h 06m
2 stops
$1,015Multiple Airlines
Tue, Apr 21 - Sun, May 17
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
$1,025Turkish Airlines
Tue, Feb 24 - Sat, Mar 14
Singapore Airlines Logo
10:15 am - 9:30 pm
SEA
-
KTM
22h 30m
1 stop
Singapore Airlines Logo
10:50 pm - 8:45 am
KTM
-
SEA
22h 40m
1 stop
$1,026Singapore Airlines
Fri, May 1 - Thu, May 14
Singapore Airlines Logo
8:45 am - 9:50 pm
SEA
-
KTM
23h 20m
1 stop
Singapore Airlines Logo
11:10 pm - 8:45 am
KTM
-
SEA
22h 20m
1 stop
$1,031Singapore Airlines
Sat, Mar 7 - Wed, Apr 1
Turkish Airlines Logo
10:58 am - 11:10 am
SEA
-
KTM
34h 27m
2 stops
Turkish Airlines Logo
12:35 pm - 4:01 pm
KTM
-
SEA
41h 11m
2 stops
$1,038Turkish Airlines
Sat, Jan 31 - Sat, Feb 7

Singapore Airlines flights from Seattle to Kathmandu

Our best Singapore Airlines deals on Seattle to Kathmandu flight tickets
Singapore Airlines
Apr 21
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
May 17
KTM10:50 pmKathmandu Tribhuvan
46h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$921
Singapore Airlines
May 2
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
May 17
KTM10:50 pmKathmandu Tribhuvan
46h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$962
Singapore Airlines
May 1
SEA10:15 amSeattle/Tacoma Intl
22h 30m
1 stop
KTM9:30 pmKathmandu Tribhuvan
May 14
KTM10:50 pmKathmandu Tribhuvan
22h 40m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,026

Turkish Airlines flights from Seattle to Kathmandu

Our best Turkish Airlines deals on Seattle to Kathmandu flight tickets
Turkish Airlines
Feb 22
SEA7:00 pmSeattle/Tacoma Intl
26h 25m
1 stop
KTM11:10 amKathmandu Tribhuvan
Mar 14
KTM12:35 pmKathmandu Tribhuvan
42h 15m
1 stop
SEA6:05 pmSeattle/Tacoma Intl
$1,003
Turkish Airlines
Jan 25
SEA7:00 pmSeattle/Tacoma Intl
26h 25m
1 stop
KTM11:10 amKathmandu Tribhuvan
Mar 5
KTM12:35 pmKathmandu Tribhuvan
42h 15m
1 stop
SEA5:05 pmSeattle/Tacoma Intl
$1,014
Turkish Airlines
Feb 24
SEA10:55 amSeattle/Tacoma Intl
34h 30m
2 stops
KTM11:10 amKathmandu Tribhuvan
Mar 14
KTM12:35 pmKathmandu Tribhuvan
42h 15m
1 stop
SEA6:05 pmSeattle/Tacoma Intl
$1,025

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 14, 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

Tue 4/21

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Sun 5/17

10:50 pm-8:45 am

1 stop46h 40m

$921

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 5/2

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Sun 5/17

10:50 pm-8:45 am

1 stop46h 40m

$962

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 3/2

4:05 pm-4:25 pm

1 stop34h 35m

Kathmandu Tribhuvan

Tue 3/10

9:10 am-12:40 pm

1 stop40h 15m

$980

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sun 2/22

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

Sat 3/14

12:35 pm-6:05 pm

1 stop42h 15m

$1,003

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sun 1/25

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

Thu 3/5

12:35 pm-5:05 pm

1 stop42h 15m

$1,014

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 4/21

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Sun 5/17

10:50 pm-6:11 pm

2 stops32h 06m

$1,015

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 2/24

10:55 am-11:10 am

2 stops34h 30m

Kathmandu Tribhuvan

Sat 3/14

12:35 pm-6:05 pm

1 stop42h 15m

$1,025

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Fri 5/1

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Thu 5/14

10:50 pm-8:45 am

1 stop22h 40m

$1,026

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 3/7

8:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

Wed 4/1

11:10 pm-8:45 am

1 stop22h 20m

$1,031

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 1/31

10:58 am-11:10 am

2 stops34h 27m

Kathmandu Tribhuvan

Sat 2/7

12:35 pm-4:01 pm

2 stops41h 11m

$1,038

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?

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 $1,323 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 49% 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

20h 45m

Direct flights

None
The fastest flight from Seattle to Kathmandu takes 20h 45m
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 20h 45m.

  • 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
8.1
1,431 reviews
Search Singapore Airlines flights
Qatar AirwaysPriceFrom $984Free CancellationRating
7.4
3,714 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $1,015Free CancellationRating
7.3
4,167 reviews
Search Turkish Airlines flights
Cathay PacificPriceFrom $1,034Free CancellationRating
7.6
1,130 reviews
Search Cathay Pacific flights
EmiratesPriceFrom $1,138Free CancellationRating
8.1
3,466 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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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