Which layover airport has the shortest travel time from Seattle to Kathmandu?

Flights connecting via Hong Kong (HKG) have the shortest average one-way travel time: 21h 15m.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Kathmandu Tribhuvan?

Qatar Airways is the most popular carrier operating from Seattle/Tacoma Intl to Kathmandu Tribhuvan

What airlines fly to Kathmandu?

Singapore Airlines, Turkish Airlines and Qatar Airways are the top three most popular airlines that fly to Kathmandu from Seattle according to our data. Singapore Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Kathmandu. Keep in mind that there are 5 different airlines that fly to Kathmandu on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Seattle to Kathmandu?

Hong Kong (HKG) has the shortest average layover time for this route: 4h 48m.

Which airport is the most popular layover for flights between Seattle and Kathmandu?

Singapore (SIN) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Kathmandu?

Flights via Hong Kong (HKG) offer the lowest average round-trip price of $946.

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?

There are 5 operators available for flights from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport as of February 2026.

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.

$305 Cheap Flights from Seattle to Kathmandu in 2026

Q: 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 $995 to $1,422. The lowest price recently found on this route was $854.

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Find the cheapest flights from Seattle to Kathmandu

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:15 am - 9:30 pm

SEA

KTM

22h 30m

1 stop

10:50 pm - 10:03 pm

KTM

SEA

35h 58m

2 stops

$854Multiple Airlines

Sun, Aug 9 - Tue, Sep 1

11:45 am - 9:45 pm

SEA

KTM

21h 15m

1 stop

11:00 pm - 10:05 am

KTM

SEA

23h 50m

1 stop

$861Cathay Pacific

Thu, May 7 - Sun, May 24

11:45 am - 9:45 pm

SEA

KTM

21h 15m

1 stop

11:00 pm - 10:05 am

KTM

SEA

23h 50m

1 stop

$867Cathay Pacific

Mon, Apr 13 - Sun, May 17

11:45 am - 9:45 pm

SEA

KTM

21h 15m

1 stop

11:00 pm - 10:05 am

KTM

SEA

23h 50m

1 stop

$891Cathay Pacific

Mon, May 4 - Wed, May 13

11:45 am - 9:45 pm

SEA

KTM

21h 15m

1 stop

11:00 pm - 10:05 am

KTM

SEA

23h 50m

1 stop

$902Cathay Pacific

Wed, Apr 29 - Sun, May 17

11:45 am - 9:45 pm

SEA

KTM

21h 15m

1 stop

11:00 pm - 10:05 am

KTM

SEA

23h 50m

1 stop

$911Cathay Pacific

Sat, May 9 - Tue, May 26

11:45 am - 9:50 am

SEA

KTM

33h 20m

2 stops

4:40 pm - 10:05 am

KTM

SEA

30h 10m

2 stops

$916Multiple Airlines

Wed, Apr 22 - Wed, May 13

11:45 am - 9:45 pm

SEA

KTM

21h 15m

1 stop

11:00 pm - 10:05 am

KTM

SEA

23h 50m

1 stop

$917Cathay Pacific

Sat, Apr 25 - Tue, May 12

11:45 am - 9:45 pm

SEA

KTM

21h 15m

1 stop

11:00 pm - 10:05 am

KTM

SEA

23h 50m

1 stop

$918Cathay Pacific

Thu, May 7 - Fri, May 22

11:45 am - 1:05 pm

SEA

KTM

36h 35m

2 stops

4:40 pm - 10:05 am

KTM

SEA

30h 10m

2 stops

$919Multiple Airlines

Wed, Apr 8 - Sun, Apr 26

Cathay Pacific flights from Seattle to Kathmandu

Our best Cathay Pacific deals on Seattle to Kathmandu flight tickets

Cathay Pacific

May 7

SEA11:45 amSeattle/Tacoma Intl

21h 15m

1 stop

KTM9:45 pmKathmandu Tribhuvan

May 24

KTM11:00 pmKathmandu Tribhuvan

23h 50m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$861

Cathay Pacific

Apr 13

SEA11:45 amSeattle/Tacoma Intl

21h 15m

1 stop

KTM9:45 pmKathmandu Tribhuvan

May 18

KTM11:00 pmKathmandu Tribhuvan

23h 50m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$867

Cathay Pacific

May 4

SEA11:45 amSeattle/Tacoma Intl

21h 15m

1 stop

KTM9:45 pmKathmandu Tribhuvan

May 13

KTM11:00 pmKathmandu Tribhuvan

23h 50m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$891

Singapore Airlines flights from Seattle to Kathmandu

Our best Singapore Airlines deals on Seattle to Kathmandu flight tickets

Singapore Airlines

Apr 14

SEA10:15 amSeattle/Tacoma Intl

22h 30m

1 stop

KTM9:30 pmKathmandu Tribhuvan

Apr 23

KTM10:50 pmKathmandu Tribhuvan

22h 40m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$1,010

Singapore Airlines

Mar 5

SEA8:45 amSeattle/Tacoma Intl

23h 10m

1 stop

KTM9:40 pmKathmandu Tribhuvan

Mar 20

KTM11:05 pmKathmandu Tribhuvan

21h 50m

1 stop

SEA8:10 amSeattle/Tacoma Intl

$1,351

Fly from

Fly to

Route

Depart

Return

Price

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sun 8/9

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Tue 9/1

10:50 pm-10:03 pm

2 stops35h 58m

$854

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 5/7

11:45 am-9:45 pm

1 stop21h 15m

Kathmandu Tribhuvan

Sun 5/24

11:00 pm-10:05 am

1 stop23h 50m

$861

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 4/13

11:45 am-9:45 pm

1 stop21h 15m

Kathmandu Tribhuvan

Sun 5/17

11:00 pm-10:05 am

1 stop23h 50m

$867

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 5/4

11:45 am-9:45 pm

1 stop21h 15m

Kathmandu Tribhuvan

Wed 5/13

11:00 pm-10:05 am

1 stop23h 50m

$891

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Wed 4/29

11:45 am-9:45 pm

1 stop21h 15m

Kathmandu Tribhuvan

Sun 5/17

11:00 pm-10:05 am

1 stop23h 50m

$902

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 5/9

11:45 am-9:45 pm

1 stop21h 15m

Kathmandu Tribhuvan

Tue 5/26

11:00 pm-10:05 am

1 stop23h 50m

$911

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Wed 4/22

11:45 am-9:50 am

2 stops33h 20m

Kathmandu Tribhuvan

Wed 5/13

4:40 pm-10:05 am

2 stops30h 10m

$916

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 4/25

11:45 am-9:45 pm

1 stop21h 15m

Kathmandu Tribhuvan

Tue 5/12

11:00 pm-10:05 am

1 stop23h 50m

$917

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 5/7

11:45 am-9:45 pm

1 stop21h 15m

Kathmandu Tribhuvan

Fri 5/22

11:00 pm-10:05 am

1 stop23h 50m

$918

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Wed 4/8

11:45 am-1:05 pm

2 stops36h 35m

Kathmandu Tribhuvan

Sun 4/26

4:40 pm-10:05 am

2 stops30h 10m

$919

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

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 $1,182.

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 $1,316 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 $993 on momondo.

How have Seattle to Kathmandu flight prices changed over time?

As of February 2026, prices for Seattle to Kathmandu flights are approximately 50% 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 35m
Direct flights	None

The fastest flight from Seattle to Kathmandu takes 20h 35m

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 35m.
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?
There are 5 operators available for flights from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport as of February 2026.
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?
momondo data reveals that the most frequently booked airline on the route from Seattle to Kathmandu is Singapore Airlines, representing 51% of all bookings. The subsequent popular airlines are Turkish Airlines at 20%, Qatar Airways at 18%, and Cathay Pacific at 6%.

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 Airlines	PriceFrom $898	Free Cancellation	Rating 8.2 1,463 reviews	Search Singapore Airlines flights
Cathay Pacific	PriceFrom $903	Free Cancellation	Rating 7.6 1,176 reviews	Search Cathay Pacific flights
Qatar Airways	PriceFrom $984	Free Cancellation	Rating 7.4 3,739 reviews	Search Qatar Airways flights
Turkish Airlines	PriceFrom $1,003	Free Cancellation	Rating 7.3 4,227 reviews	Search Turkish Airlines flights
Emirates	PriceFrom $1,138	Free Cancellation	Rating 8.1 3,524 reviews	Search Emirates flights

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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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Seattle to Kathmandu from $305

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 4/7. 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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Our best Cathay Pacific deals on Seattle to Kathmandu flight tickets

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How to get the cheapest flight ticket from Seattle to Kathmandu

What is the typical price of a round-trip flight between Seattle and Kathmandu?

What is the cheapest month to fly to Kathmandu?

How far in advance should I book a flight to Kathmandu?

How have Seattle to Kathmandu flight prices changed over time?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Kathmandu Tribhuvan?

What airlines fly to Kathmandu?

Which airport is the most popular layover for flights between Seattle and Kathmandu?

Which layover airport offers the lowest fares from Seattle to Kathmandu?

Which layover airport has the shortest travel time from Seattle to Kathmandu?

Which layover airport has the shortest connection time from Seattle to Kathmandu?

When to book flights from Seattle to Kathmandu

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

Direct flights

Best airlines flying from Seattle to Kathmandu

Compare and see reviews for airlines that fly from Seattle to Kathmandu with momondo

Traveling to a place near Kathmandu?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Kathmandu?

Can I find flights from Seattle to Kathmandu with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to Kathmandu?

I’m not ready to book a flight from Seattle to Kathmandu right now. Can momondo alert me if prices change?

An easier way to manage your Kathmandu trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Nepal

Fly your favorite airline to Kathmandu

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Kathmandu

List of cabin classes available on flights landing in Kathmandu. Availability may vary depending on flight origin and airline.

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