How long is the flight from Kathmandu to Seattle?

Departing from Kathmandu to Seattle will take you 42h 10m. The distance from Kathmandu to Seattle is about 11204 km.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest time of day to fly from KTM to SEA?

When flying from Kathmandu to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

How can I find direct flights from Kathmandu to Seattle?

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

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

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

C$ 1,551+ Cheap Flights from Kathmandu to Seattle

Cheap flight deals from Kathmandu to Seattle

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Kathmandu to Seattle
Explore the most affordable flight options available from Kathmandu to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Tue 24/117:25 p.m. -

1 stop27h 25m

Sun 30/512:55 a.m. -

1 stop27h 35m

Deal found 5/10C$ 2,422

Thu 10/1210:55 p.m. -

2 stops32h 45m

Wed 10/310:25 a.m. -

1 stop21h 20m

Deal found 6/10C$ 2,459

Sun 22/1111:05 a.m. -

2 stops48h 01m

Wed 2/64:25 p.m. -

1 stop27h 40m

Deal found 5/10C$ 2,530

Sun 22/1111:05 a.m. -

2 stops48h 01m

Tue 1/67:00 a.m. -

2 stops37h 05m

Deal found 5/10C$ 2,567

Thu 22/107:55 p.m. -

1 stop30h 15m

Fri 6/114:05 p.m. -

1 stop36h 50m

Deal found 6/10C$ 2,574

Fri 27/115:30 p.m. -

1 stop31h 55m

Tue 1/64:25 p.m. -

1 stop27h 40m

Deal found 5/10C$ 2,619

Thu 26/1112:45 p.m. -

1 stop42h 10m

Sat 29/57:15 p.m. -

1 stop22h 15m

Deal found 5/10C$ 2,623

Fri 27/115:30 p.m. -

1 stop31h 55m

Thu 3/67:00 a.m. -

2 stops37h 05m

Deal found 5/10C$ 2,654

Sun 22/1112:45 p.m. -

1 stop42h 10m

Wed 2/67:15 p.m. -

1 stop22h 15m

Deal found 5/10C$ 2,683

Thu 26/1112:45 p.m. -

1 stop42h 10m

Sun 30/57:15 p.m. -

1 stop22h 15m

Deal found 5/10C$ 2,700

Tue 24/1112:45 p.m. -

1 stop42h 10m

Wed 2/67:15 p.m. -

1 stop22h 15m

Deal found 5/10C$ 2,751

Mon 23/117:35 a.m. -

1 stop43h 45m

Thu 3/65:15 p.m. -

1 stop36h 55m

Deal found 5/10C$ 2,755

Find flight deals from Kathmandu to Seattle

Round-trip from	C$ 2,197
One-way from	C$ 1,551
Popular in	June
Cheapest in	September
Average price	C$ 1,777

10/3-12/5
5 total stops
74h 26m total
Kathmandu to Seattle

Search Deals

Cathay Pacific
6/12-31/12
1 total stop
23h 35m total
Kathmandu to Seattle

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (C$ 148 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 54 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Sun 6/12

10:55 p.m.-8:45 a.m.

1 stop23h 35m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:30 p.m.

Nonstop0h 00m

C$ 1,551

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 10/3

10:55 p.m.-8:31 p.m.

3 stops35h 21m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:30 p.m.

Nonstop0h 00m

C$ 1,557

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 10/3

10:55 p.m.-8:31 p.m.

3 stops35h 21m

Seattle/Tacoma Intl

Wed 12/5

5:40 p.m.-9:30 p.m.

2 stops39h 05m

C$ 2,197

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 10/12

10:55 p.m.-5:55 p.m.

2 stops32h 45m

Seattle/Tacoma Intl

Wed 10/3

10:25 a.m.-9:30 p.m.

1 stop21h 20m

C$ 2,459

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Fri 16/10

11:10 p.m.-8:27 p.m.

3 stops34h 02m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:30 p.m.

Nonstop0h 00m

C$ 2,570

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Thu 22/10

7:55 p.m.-1:25 p.m.

1 stop30h 15m

Seattle/Tacoma Intl

Fri 6/11

4:05 p.m.-6:40 p.m.

1 stop36h 50m

C$ 2,574

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Sun 22/11

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

1 stop42h 10m

Seattle/Tacoma Intl

Sun 30/5

7:15 p.m.-6:15 a.m.

1 stop22h 15m

C$ 2,760

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Sun 22/11

11:05 a.m.-9:21 p.m.

2 stops48h 01m

Seattle/Tacoma Intl

Wed 2/6

8:32 a.m.-8:50 a.m.

2 stops35h 33m

C$ 2,881

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Wed 25/11

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

1 stop42h 10m

Seattle/Tacoma Intl

Fri 28/5

1:12 p.m.-6:15 a.m.

2 stops28h 18m

C$ 3,133

KathmanduSeattle

KTM Kathmandu Tribhuvan - SEA Seattle/Tacoma Intl

KTMSEA

Kathmandu Tribhuvan

Sun 20/12

10:55 p.m.-8:45 a.m.

1 stop23h 35m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-1:30 p.m.

Nonstop0h 00m

C$ 3,173

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/10

Showing 1-10 of 11 resultsSorted by cheapest first

Best time to book a flight from Kathmandu to Seattle

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

KTM-SEA

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

How long is the flight from Kathmandu to Seattle?
Departing from Kathmandu to Seattle will take you 42h 10m. The distance from Kathmandu to Seattle is about 11204 km.
Can I find deals for flights from Kathmandu to Seattle that include hotel bookings?
Yes. In addition to deals on Kathmandu to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Kathmandu to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kathmandu to Seattle.
Can I find deals for business class flights from Kathmandu to Seattle?
Yes. Cheapflights offers flight deals from Kathmandu to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheap flights from Kathmandu to Seattle from C$ 1,551

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Kathmandu to Seattle

Cheapest flights from Kathmandu to SeattleExplore the most affordable flight options available from Kathmandu to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Explore the most affordable flight options available from Kathmandu to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Best flights from Kathmandu to SeattleDiscover carefully curated flight deals from Kathmandu to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Discover carefully curated flight deals from Kathmandu to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Last-minute flights from Kathmandu to SeattleDiscover last-minute flight deals from Kathmandu to Seattle. Data last updated 9 October 2026 and is based on user searches.

Discover last-minute flight deals from Kathmandu to Seattle. Data last updated 9 October 2026 and is based on user searches.

One-way flights from Kathmandu to SeattleSearch for one-way flight options from Kathmandu to Seattle. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

Search for one-way flight options from Kathmandu to Seattle. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

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Best time to book a flight from Kathmandu to Seattle

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Related info for your journey

How long is the flight from Kathmandu to Seattle?

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

How can I find direct flights from Kathmandu to Seattle?

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

Travelling to a place near Seattle?

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Kathmandu and Seattle flights

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Cheapest flights from Kathmandu to Seattle
Explore the most affordable flight options available from Kathmandu to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Best flights from Kathmandu to Seattle
Discover carefully curated flight deals from Kathmandu to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Last-minute flights from Kathmandu to Seattle
Discover last-minute flight deals from Kathmandu to Seattle. Data last updated 9 October 2026 and is based on user searches.

One-way flights from Kathmandu to Seattle
Search for one-way flight options from Kathmandu to Seattle. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.