What airlines fly to Kathmandu?

Singapore Airlines, Qatar Airways and Turkish Airlines 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 50% 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 airport is the most popular layover for flights between Seattle and Kathmandu?

Doha (DOH) was the most common stop: 34% of momondo users choosing 1-stop flights on this route connected there.

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.

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

Istanbul (IST) has the shortest average layover time for this route: 3h 41m.

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

Flights via Hong Kong (HKG) offer the lowest average round-trip price of $1,081.

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 April 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.

$315 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 $1,431 to $1,037. The lowest price recently found on this route was $795.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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 - 7:07 pm

KTM

SEA

33h 02m

2 stops

$795Multiple Airlines

Tue, Sep 1 - Tue, Sep 15

10:15 am - 9:30 pm

SEA

KTM

22h 30m

1 stop

10:50 pm - 7:07 pm

KTM

SEA

33h 02m

2 stops

$810Multiple Airlines

Tue, Sep 1 - Sun, Sep 20

10:15 am - 9:30 pm

SEA

KTM

22h 30m

1 stop

10:50 pm - 8:45 am

KTM

SEA

22h 40m

1 stop

$918Singapore Airlines

Thu, Sep 3 - Thu, Sep 17

5:12 pm - 9:30 pm

SEA

KTM

39h 33m

2 stops

10:50 pm - 8:45 am

KTM

SEA

22h 40m

1 stop

$941Multiple Airlines

Thu, Aug 6 - Thu, Sep 10

10:15 am - 9:30 pm

SEA

KTM

22h 30m

1 stop

11:10 pm - 8:45 am

KTM

SEA

22h 20m

1 stop

$946Singapore Airlines

Thu, Sep 3 - Fri, Sep 18

10:15 am - 9:30 pm

SEA

KTM

22h 30m

1 stop

10:50 pm - 8:45 am

KTM

SEA

46h 40m

1 stop

$950Singapore Airlines

Tue, Sep 1 - Sun, Sep 20

10:15 am - 9:30 pm

SEA

KTM

22h 30m

1 stop

11:05 pm - 8:10 am

KTM

SEA

21h 50m

1 stop

$966Singapore Airlines

Tue, Sep 29 - Fri, Oct 30

10:15 am - 9:30 pm

SEA

KTM

22h 30m

1 stop

3:10 pm - 8:45 am

KTM

SEA

30h 20m

2 stops

$1,001Multiple Airlines

Thu, Sep 3 - Fri, Sep 18

4:25 pm - 8:50 am

SEA

KTM

27h 40m

1 stop

6:00 pm - 12:25 pm

KTM

SEA

31h 10m

1 stop

$1,016Qatar Airways

Thu, Aug 6 - Fri, Sep 11

7:07 pm - 9:30 pm

SEA

KTM

37h 38m

2 stops

10:50 pm - 3:59 pm

KTM

SEA

29h 54m

2 stops

$1,022Multiple Airlines

Tue, Sep 1 - Tue, Sep 15

Cathay Pacific flights from Seattle to Kathmandu

Our best Cathay Pacific deals on Seattle to Kathmandu flight tickets

Cathay Pacific

Sep 1

SEA12:25 pmSeattle/Tacoma Intl

20h 35m

1 stop

KTM9:45 pmKathmandu Tribhuvan

Sep 20

KTM11:00 pmKathmandu Tribhuvan

23h 50m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$1,090

Cathay Pacific

Apr 7

SEA7:51 pmSeattle/Tacoma Intl

37h 09m

2 stops

KTM9:45 pmKathmandu Tribhuvan

May 7

KTM11:00 pmKathmandu Tribhuvan

30h 02m

2 stops

SEA4:17 pmSeattle/Tacoma Intl

$1,658

Cathay Pacific

Apr 9

SEA8:41 amSeattle/Tacoma Intl

48h 19m

2 stops

KTM9:45 pmKathmandu Tribhuvan

May 4

KTM11:00 pmKathmandu Tribhuvan

47h 14m

2 stops

SEA9:29 amSeattle/Tacoma Intl

$1,665

Singapore Airlines flights from Seattle to Kathmandu

Our best Singapore Airlines deals on Seattle to Kathmandu flight tickets

Singapore Airlines

Sep 3

SEA10:15 amSeattle/Tacoma Intl

22h 30m

1 stop

KTM9:30 pmKathmandu Tribhuvan

Sep 17

KTM10:50 pmKathmandu Tribhuvan

22h 40m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$918

Singapore Airlines

Sep 3

SEA10:15 amSeattle/Tacoma Intl

22h 30m

1 stop

KTM9:30 pmKathmandu Tribhuvan

Sep 18

KTM11:10 pmKathmandu Tribhuvan

22h 20m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$946

Singapore Airlines

Sep 1

SEA10:15 amSeattle/Tacoma Intl

22h 30m

1 stop

KTM9:30 pmKathmandu Tribhuvan

Sep 20

KTM10:50 pmKathmandu Tribhuvan

46h 40m

1 stop

SEA8:45 amSeattle/Tacoma Intl

$950

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 9/1

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Tue 9/15

10:50 pm-7:07 pm

2 stops33h 02m

$795

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 9/1

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Sun 9/20

10:50 pm-7:07 pm

2 stops33h 02m

$810

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 9/3

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Thu 9/17

10:50 pm-8:45 am

1 stop22h 40m

$918

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 8/6

5:12 pm-9:30 pm

2 stops39h 33m

Kathmandu Tribhuvan

Thu 9/10

10:50 pm-8:45 am

1 stop22h 40m

$941

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 9/3

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Fri 9/18

11:10 pm-8:45 am

1 stop22h 20m

$946

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 9/1

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Sun 9/20

10:50 pm-8:45 am

1 stop46h 40m

$950

Quickest round-trip

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 9/29

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Fri 10/30

11:05 pm-8:10 am

1 stop21h 50m

$966

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 9/3

10:15 am-9:30 pm

1 stop22h 30m

Kathmandu Tribhuvan

Fri 9/18

3:10 pm-8:45 am

2 stops30h 20m

$1,001

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 8/6

4:25 pm-8:50 am

1 stop27h 40m

Kathmandu Tribhuvan

Fri 9/11

6:00 pm-12:25 pm

1 stop31h 10m

$1,016

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 9/1

7:07 pm-9:30 pm

2 stops37h 38m

Kathmandu Tribhuvan

Tue 9/15

10:50 pm-3:59 pm

2 stops29h 54m

$1,022

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 $1,197.

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 $1,307 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 April 2026, prices for Seattle to Kathmandu flights are approximately 46% 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

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?
There are 5 operators available for flights from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport as of April 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 48% of all bookings. The subsequent popular airlines are Qatar Airways at 19%, Turkish Airlines at 17%, and Cathay Pacific at 11%.

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 $813	Free Cancellation	Rating 8.2 1,487 reviews	Search Singapore Airlines flights
Cathay Pacific	PriceFrom $903	Free Cancellation	Rating 7.6 1,239 reviews	Search Cathay Pacific flights
Turkish Airlines	PriceFrom $979	Free Cancellation	Rating 7.3 4,293 reviews	Search Turkish Airlines flights
Qatar Airways	PriceFrom $984	Free Cancellation	Rating 7.4 3,730 reviews	Search Qatar Airways flights
Emirates	PriceFrom $1,138	Free Cancellation	Rating 8.1 3,553 reviews	Search Emirates flights

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

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Sat 5/2

Sat 5/9

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Nepal

Airlines

Cabin classes

Other flights from Seattle

Complete your trip

Feeling lucky

Fly your favorite airline to Kathmandu

Cheap flights from Seattle to Kathmandu from $315

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 8/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Seattle to Kathmandu

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cathay Pacific flights from Seattle to Kathmandu

Our best Cathay Pacific deals on Seattle to Kathmandu flight tickets

Singapore Airlines flights from Seattle to Kathmandu

Our best Singapore Airlines deals on Seattle to Kathmandu flight tickets

momondo Fare Finder

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

See travel insights to Kathmandu from

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 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

Frequently asked questions about flying 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

Traveling to a place near Kathmandu?

Why use momondo?

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.

Fly to other destinations from Seattle

According to popular flight searches on momondo this year

Complete your trip to Kathmandu

Explore popular destinations other users love

According to popular flight searches on momondo this year