What is the cheapest airline that flies from Washington to Kathmandu Tribhuvan?

Singapore Airlines and Qatar Airways are the most popular carriers operating from Washington to Kathmandu Tribhuvan

How long does it take to fly to Kathmandu?

If you’re flying from a popular airport in State of Washington, such as Seattle or Spokane, and flying into Kathmandu, then you can expect flight times to average 23h 20m and 40h 20m, respectively.

What airlines fly to Kathmandu?

Singapore Airlines, Turkish Airlines and Qatar Airways are the top three most popular airlines that fly to Kathmandu from State of Washington 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.

When did momondo last update prices for flights from Washington to Kathmandu Tribhuvan Airport?

Prices for flights from Washington to Kathmandu Tribhuvan Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Washington to Kathmandu Tribhuvan Airport?

There are 5 operators available for flights from Washington to Kathmandu Tribhuvan Airport as of November 2025.

How old do you have to be to fly from Washington to Kathmandu Tribhuvan Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Kathmandu Tribhuvan Airport.

What documentation or ID do you need to fly to Kathmandu Tribhuvan Airport?

The required travel and health documents for your Kathmandu Tribhuvan Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kathmandu Tribhuvan Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$370 Cheap Flights from Washington to Kathmandu in 2025/26

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Cheap round-trip flights

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8:45 am - 9:50 pmSEA-KTM

23h 20m1 stop

11:05 pm - 7:10 amKTM-SEA

21h 50m1 stop

$918Singapore Airlines

Find Deal

sáb., feb. 21 - mié., mar. 4

9:45 am - 9:50 pmSEA-KTM

23h 20m1 stop

11:00 pm - 8:45 amKTM-SEA

22h 30m1 stop

$920Singapore Airlines

Find Deal

vie., mar. 27 - lun., abr. 13

8:45 am - 9:50 pmSEA-KTM

23h 20m1 stop

11:00 pm - 7:05 pmKTM-SEA

33h 50m2 stops

$950Multiple Airlines

Find Deal

dom., ene. 4 - mar., feb. 3

7:00 pm - 11:10 amSEA-KTM

26h 25m1 stop

12:35 pm - 4:01 pmKTM-SEA

41h 11m2 stops

$976Turkish Airlines

Find Deal

jue., ene. 1 - dom., feb. 1

8:45 am - 9:50 pmSEA-KTM

23h 20m1 stop

11:00 pm - 4:54 pmKTM-SEA

31h 39m3 stops

$1,010Multiple Airlines

Find Deal

dom., ene. 4 - mar., feb. 3

11:50 am - 9:45 pmSEA-KTM

21h 10m1 stop

11:00 pm - 10:10 amKTM-SEA

23h 55m1 stop

$1,018Cathay Pacific

Find Deal

mié., abr. 8 - dom., may. 3

6:00 am - 9:30 pmSEA-KTM

49h 45m2 stops

11:00 pm - 10:10 amKTM-SEA

23h 55m1 stop

$1,026Cathay Pacific

Find Deal

jue., ene. 1 - lun., abr. 6

3:59 pm - 5:50 pmPDX-KTM

60h 06m2 stops

7:05 pm - 5:59 pmKTM-PDX

36h 39m2 stops

$1,032Qatar Airways

Find Deal

dom., ene. 4 - mié., feb. 4

7:00 pm - 11:10 amSEA-KTM

26h 25m1 stop

12:35 pm - 4:07 pmKTM-SEA

65h 17m2 stops

$1,132Turkish Airlines

Find Deal

sáb., nov. 29 - sáb., dic. 6

7:08 am - 5:50 pmPDX-KTM

44h 57m2 stops

7:05 pm - 5:55 pmKTM-PDX

36h 35m2 stops

$1,414Qatar Airways

Find Deal

vie., nov. 28 - vie., dic. 12

Cathay Pacific flights from State of Washington to Kathmandu

Our best Cathay Pacific deals on State of Washington to Kathmandu flight tickets

Cathay Pacific

Apr 8

SEA11:50 amSeattle/Tacoma Intl

21h 10m

1 stop

KTM9:45 pmKathmandu Tribhuvan

May 3

KTM11:00 pmKathmandu Tribhuvan

23h 55m

1 stop

SEA10:10 amSeattle/Tacoma Intl

$1,018

Find similar

Cathay Pacific

Jan 1

SEA6:00 amSeattle/Tacoma Intl

49h 45m

2 stops

KTM9:30 pmKathmandu Tribhuvan

Apr 6

KTM11:00 pmKathmandu Tribhuvan

23h 55m

1 stop

SEA10:10 amSeattle/Tacoma Intl

$1,026

Find similar

Cathay Pacific

Nov 10

SEA6:20 amSeattle/Tacoma Intl

49h 25m

2 stops

KTM9:30 pmKathmandu Tribhuvan

Feb 10

KTM10:55 pmKathmandu Tribhuvan

38h 49m

2 stops

SEA11:59 pmSeattle/Tacoma Intl

$1,033

Find similar

Qatar Airways flights from State of Washington to Kathmandu

Our best Qatar Airways deals on State of Washington to Kathmandu flight tickets

Qatar Airways

Jan 4

PDX3:59 pmPortland

60h 06m

2 stops

KTM5:50 pmKathmandu Tribhuvan

Feb 4

KTM7:05 pmKathmandu Tribhuvan

36h 39m

2 stops

PDX5:59 pmPortland

$1,032

Find similar

Qatar Airways

Nov 10

SEA8:05 amSeattle/Tacoma Intl

44h 00m

2 stops

KTM5:50 pmKathmandu Tribhuvan

Feb 10

KTM9:10 amKathmandu Tribhuvan

40h 15m

1 stop

SEA11:40 amSeattle/Tacoma Intl

$1,164

Find similar

Qatar Airways

Nov 10

SEA4:05 pmSeattle/Tacoma Intl

26h 05m

1 stop

KTM7:55 amKathmandu Tribhuvan

Feb 10

KTM9:10 amKathmandu Tribhuvan

40h 15m

1 stop

SEA11:40 amSeattle/Tacoma Intl

$1,193

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

sáb. 2/21

8:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

mié. 3/4

11:05 pm-7:10 am

1 stop21h 50m

$918

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

vie. 3/27

9:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

lun. 4/13

11:00 pm-8:45 am

1 stop22h 30m

$920

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

dom. 1/4

8:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

mar. 2/3

11:00 pm-7:05 pm

2 stops33h 50m

$950

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

jue. 1/1

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

dom. 2/1

12:35 pm-4:01 pm

2 stops41h 11m

$976

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

dom. 1/4

8:45 am-9:50 pm

1 stop23h 20m

Kathmandu Tribhuvan

mar. 2/3

11:00 pm-4:54 pm

3 stops31h 39m

$1,010

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

mié. 4/8

11:50 am-9:45 pm

1 stop21h 10m

Kathmandu Tribhuvan

dom. 5/3

11:00 pm-10:10 am

1 stop23h 55m

$1,018

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

jue. 1/1

6:00 am-9:30 pm

2 stops49h 45m

Kathmandu Tribhuvan

lun. 4/6

11:00 pm-10:10 am

1 stop23h 55m

$1,026

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

dom. 1/4

3:59 pm-5:50 pm

2 stops60h 06m

Kathmandu Tribhuvan

mié. 2/4

7:05 pm-5:59 pm

2 stops36h 39m

$1,032

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

sáb. 11/29

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

sáb. 12/6

12:35 pm-4:07 pm

2 stops65h 17m

$1,132

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

vie. 11/28

7:08 am-5:50 pm

2 stops44h 57m

Kathmandu Tribhuvan

vie. 12/12

7:05 pm-5:55 pm

2 stops36h 35m

$1,414

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 State of Washington 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

Other information

What is the cheapest month to fly to Kathmandu?

The month of February is another great option to travel to Kathmandu, with average flight prices from State of Washington averaging around $1,185.

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

You are more likely to see cheaper flights to Kathmandu from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Kathmandu for around $1,342 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kathmandu from State of Washington for as low as $1,091 on momondo.

Can stopping save me money on State of Washington to Kathmandu flights?

You could potentially save up to 54% on your flight if you consider stops on a State of Washington to Kathmandu flight.

Cheap State of Washington to Kathmandu flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Kathmandu

Direct flights	None

There are no direct flights from State of Washington to Kathmandu. There are no popular flight routes from State of Washington to Kathmandu.

Search flight deals

When did momondo last update prices for flights from Washington to Kathmandu Tribhuvan Airport?
Prices for flights from Washington to Kathmandu Tribhuvan Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Kathmandu Tribhuvan Airport?
There are 5 operators available for flights from Washington to Kathmandu Tribhuvan Airport as of November 2025.
How old do you have to be to fly from Washington to Kathmandu Tribhuvan Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Kathmandu Tribhuvan Airport.
What documentation or ID do you need to fly to Kathmandu Tribhuvan Airport?
The required travel and health documents for your Kathmandu Tribhuvan Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kathmandu Tribhuvan Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from State of Washington to Kathmandu

Compare and see reviews for airlines that fly from State of Washington to Kathmandu with momondo

Airline	Rating	Free Cancellation	Price
Singapore Airlines	PriceFrom $898	Free Cancellation	Rating 8.1 1,393 reviews	Search Singapore Airlines flights
Turkish Airlines	PriceFrom $1,081	Free Cancellation	Rating 7.3 4,031 reviews	Search Turkish Airlines flights
Emirates	PriceFrom $1,138	Free Cancellation	Rating 8.1 3,402 reviews	Search Emirates flights
Qatar Airways	PriceFrom $1,150	Free Cancellation	Rating 7.4 3,661 reviews	Search Qatar Airways flights
Cathay Pacific	PriceFrom $1,153	Free Cancellation	Rating 7.6 1,055 reviews	Search Cathay Pacific flights

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

All flight searches from Washington to Kathmandu on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Kathmandu.

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

Price alerts on flights to Kathmandu from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Kathmandu trip

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Cheap flights from Washington to Kathmandu from $370

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Kathmandu departing on 1/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Cathay Pacific flights from State of Washington to Kathmandu

Our best Cathay Pacific deals on State of Washington to Kathmandu flight tickets

Qatar Airways flights from State of Washington to Kathmandu

Our best Qatar Airways deals on State of Washington to Kathmandu flight tickets

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

See travel insights to Kathmandu from

How to get the cheapest flight ticket from State of Washington 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 February is another great option to travel to Kathmandu, with average flight prices from State of Washington averaging around $1,185.

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

Can stopping save me money on State of Washington to Kathmandu flights?

You could potentially save up to 54% on your flight if you consider stops on a State of Washington to Kathmandu flight.

What is the cheapest airline that flies from Washington to Kathmandu Tribhuvan?

Singapore Airlines and Qatar Airways are the most popular carriers operating from Washington to Kathmandu Tribhuvan

What airlines fly to Kathmandu?

How long does it take to fly to Kathmandu?

If you’re flying from a popular airport in State of Washington, such as Seattle or Spokane, and flying into Kathmandu, then you can expect flight times to average 23h 20m and 40h 20m, respectively.

Cheap State of Washington to Kathmandu flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Kathmandu

Direct flights

When did momondo last update prices for flights from Washington to Kathmandu Tribhuvan Airport?

How many operators does momondo search for flights from Washington to Kathmandu Tribhuvan Airport?

How old do you have to be to fly from Washington to Kathmandu Tribhuvan Airport?

What documentation or ID do you need to fly to Kathmandu Tribhuvan Airport?

Best airlines flying from State of Washington to Kathmandu

Compare and see reviews for airlines that fly from State of Washington to Kathmandu with momondo

Traveling to a place near Kathmandu?

Why use momondo?

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

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

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

I’m not ready to book a flight from Washington 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