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Cheap flights from Seattle to Kathmandu from C$ 1,158

SEA — KTM
10 Dec — 17 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Kathmandu

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Kathmandu

Wed 11/113:50 p.m. -
1 stop33h 00m
Fri 20/119:35 a.m. -
1 stop40h 25m
Deal found 8/11C$ 1,943
Thu 12/1110:07 a.m. -
2 stops41h 53m
Fri 20/119:35 a.m. -
1 stop40h 25m
Deal found 8/11C$ 2,135
Mon 9/113:50 p.m. -
1 stop34h 40m
Fri 20/117:00 p.m. -
1 stop31h 00m
Deal found 8/11C$ 2,171
Mon 9/113:50 p.m. -
1 stop34h 40m
Thu 19/113:50 p.m. -
1 stop34h 10m
Deal found 8/11C$ 2,174
Fri 13/113:50 p.m. -
1 stop34h 40m
Fri 20/119:35 a.m. -
1 stop40h 25m
Deal found 8/11C$ 2,194
Tue 10/118:03 a.m. -
2 stops42h 27m
Fri 20/119:35 a.m. -
1 stop40h 25m
Deal found 8/11C$ 2,248
Sat 14/1110:07 a.m. -
2 stops40h 23m
Sat 21/119:35 a.m. -
1 stop40h 25m
Deal found 8/11C$ 2,255
Sat 14/117:10 a.m. -
2 stops41h 40m
Fri 20/119:35 a.m. -
1 stop40h 25m
Deal found 8/11C$ 2,304

Find flight deals from Seattle to Kathmandu

Round-trip from

C$ 1,673

One-way from

C$ 1,158

Popular in

July

Cheapest in

September

Average price

C$ 1,932
Turkish Airlines
  • Turkish Airlines
  • 4/1-20/1
  • 2 total stops
  • 68h 40m total
  • Seattle to Kathmandu
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Singapore Airlines
  • Singapore Airlines
  • 29/4-31/12
  • 1 total stop
  • 22h 30m total
  • Seattle to Kathmandu
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Highest demand for flights based on searches. 10% potential increase in price (C$ 287 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 50 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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Cheapflights Fare Finder

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

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Route

Depart

Return

Price

Cheapest round-trip

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Thu 29/4

10:15 a.m.-9:30 p.m.

1 stop22h 30m

Kathmandu Tribhuvan

Wed 31/12

12:00 a.m.-10:30 a.m.

Nonstop0h 00m

C$ 1,158

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Sat 24/4

10:15 a.m.-9:30 p.m.

1 stop22h 30m

Kathmandu Tribhuvan

Wed 31/12

12:00 a.m.-10:30 a.m.

Nonstop0h 00m

C$ 1,229

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Thu 31/12

7:05 p.m.-11:20 a.m.

1 stop26h 30m

Kathmandu Tribhuvan

Wed 31/12

12:00 a.m.-10:30 a.m.

Nonstop0h 00m

C$ 1,357
Quickest round-trip

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 28/4

7:20 p.m.-6:05 a.m.

1 stop22h 00m

Kathmandu Tribhuvan

Wed 31/12

12:00 a.m.-10:30 a.m.

Nonstop0h 00m

C$ 1,357

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Tue 5/1

7:05 p.m.-11:20 a.m.

1 stop26h 30m

Kathmandu Tribhuvan

Wed 31/12

12:00 a.m.-10:30 a.m.

Nonstop0h 00m

C$ 1,357

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Thu 7/1

7:05 p.m.-11:20 a.m.

1 stop26h 30m

Kathmandu Tribhuvan

Wed 31/12

12:00 a.m.-10:30 a.m.

Nonstop0h 00m

C$ 1,357

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Fri 1/1

7:05 p.m.-11:20 a.m.

1 stop26h 30m

Kathmandu Tribhuvan

Wed 31/12

12:00 a.m.-10:30 a.m.

Nonstop0h 00m

C$ 1,414

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Mon 4/1

7:05 p.m.-11:20 a.m.

1 stop26h 30m

Kathmandu Tribhuvan

Wed 20/1

12:45 p.m.-5:10 p.m.

1 stop42h 10m

C$ 1,673

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Mon 4/1

3:50 p.m.-5:45 p.m.

1 stop36h 10m

Kathmandu Tribhuvan

Wed 20/1

9:35 a.m.-8:33 p.m.

2 stops48h 43m

C$ 2,033

SeattleKathmandu

SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan

SEAKTM

Seattle/Tacoma Intl

Wed 5/5

8:21 a.m.-4:45 p.m.

2 stops43h 39m

Kathmandu Tribhuvan

Sun 9/5

6:00 p.m.-12:25 p.m.

1 stop31h 10m

C$ 2,176

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 13 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Kathmandu

Have a flexible travel schedule? Discover the best time to fly to Kathmandu from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Seattle to Kathmandu

How far ahead should I book a flight from Seattle to Kathmandu?

The best time to book flights from Seattle to Kathmandu is 68 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Kathmandu?

Currently, September is the cheapest month in which you can book a flight from Seattle to Kathmandu (average of C$ 1,419). Flying from Seattle to Kathmandu in July is currently the most expensive (average of C$ 2,146). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Seattle to Kathmandu?

Airfare is below average for this route at the moment.

Seattle to Kathmandu flights typically cost between C$ 1,771 and C$ 2,246 in January.
The cheapest round-trip price found within the last 5 days was C$ 1,673 on Turkish Airlines (4 Jan-20 Jan).

Related info for your journey

  • How long is the flight from Seattle to Kathmandu?

    A quick flight from Seattle to Kathmandu can take about 26h 30m. Turkish Airlines provides one of the quickest options available for as low as C$ 1,673. The distance between Seattle and Kathmandu is about 11204 km. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Seattle to Kathmandu that include hotel bookings?

    Yes. In addition to deals on Seattle to Kathmandu flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Kathmandu?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Kathmandu.

  • Can I find deals for business class flights from Seattle to Kathmandu?

    Yes. Cheapflights offers flight deals from Seattle to Kathmandu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Kathmandu?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Kathmandu (average of C$ 1,419). Flying from Seattle to Kathmandu in July is currently the most expensive (average of C$ 2,146). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Kathmandu?

Book flights to Kathmandu if you plan to visit one of these locations
Nagarkot

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Kathmandu car rentals
Kathmandu Tribhuvan Airport car rentals

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