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Cheap flights from Kathmandu to Seattle from $613

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kathmandu to Seattle departing on 1/19. 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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Find the cheapest flights from Kathmandu to Seattle (KTM-SEA)

Cheap round-trip flights

Qatar Airways Logo
6:00 pm - 8:09 pmKTM-SEA
38h 54m2 stops
Qatar Airways Logo
4:30 pm - 5:50 pmSEA-KTM
36h 35m1 stop
$1,318Qatar Airways
Find Deal
Sun, Sep 28 - Fri, Oct 10
Logo
1:45 pm - 2:20 pmKTM-SEA
37h 20m2 stops
Logo
2:00 pm - 6:35 pmSEA-KTM
38h 50m2 stops
$1,334
Find Deal
Tue, Oct 28 - Tue, Nov 11
Qatar Airways Logo
7:05 pm - 12:45 pmKTM-SEA
30h 25m1 stop
Qatar Airways Logo
6:30 am - 10:15 amSEA-KTM
39h 00m2 stops
$1,339Qatar Airways
Find Deal
Sat, Sep 27 - Mon, Oct 13
Logo
1:45 pm - 9:56 pmKTM-SEA
44h 56m2 stops
Logo
2:00 pm - 6:35 pmSEA-KTM
38h 50m2 stops
$1,349
Find Deal
Tue, Oct 28 - Tue, Nov 11
Qatar Airways Logo
7:05 pm - 12:45 pmKTM-SEA
30h 25m1 stop
Qatar Airways Logo
9:15 pm - 10:15 amSEA-KTM
48h 15m2 stops
$1,352Qatar Airways
Find Deal
Fri, Sep 26 - Sun, Oct 12
Qatar Airways Logo
7:05 pm - 9:58 pmKTM-SEA
39h 38m2 stops
Qatar Airways Logo
4:30 pm - 4:45 pmSEA-KTM
35h 30m1 stop
$1,353Qatar Airways
Find Deal
Sat, Sep 27 - Wed, Oct 8
Singapore Airlines Logo
10:50 pm - 8:45 amKTM-SEA
46h 40m1 stop
Singapore Airlines Logo
8:45 am - 9:50 pmSEA-KTM
23h 20m1 stop
$1,398Singapore Airlines
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Thu, Oct 2 - Fri, Nov 21
KLM Logo
3:05 pm - 5:40 pmKTM-SEA
39h 20m2 stops
KLM Logo
2:00 pm - 2:05 pmSEA-KTM
35h 20m2 stops
$1,401KLM
Find Deal
Fri, Sep 26 - Fri, Oct 10
Turkish Airlines Logo
7:40 am - 5:15 pmKTM-SEA
22h 20m1 stop
Turkish Airlines Logo
7:10 pm - 6:15 amSEA-KTM
22h 20m1 stop
$1,591Turkish Airlines
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Thu, Sep 25 - Tue, Oct 14
Emirates Logo
12:20 am - 1:25 pmKTM-SEA
25h 50m1 stop
Emirates Logo
4:05 pm - 8:20 amSEA-KTM
26h 30m1 stop
$1,593Emirates
Find Deal
Wed, Oct 1 - Fri, Nov 21

Qatar Airways flights from Kathmandu to Seattle

Our best Qatar Airways deals on Kathmandu to Seattle flight tickets
Qatar Airways
Sep 28
KTM6:00 pmKathmandu Tribhuvan
38h 54m
2 stops
SEA8:09 pmSeattle/Tacoma Intl
Oct 10
SEA4:30 pmSeattle/Tacoma Intl
36h 35m
1 stop
KTM5:50 pmKathmandu Tribhuvan
$1,318
Find similar
Qatar Airways
Sep 27
KTM7:05 pmKathmandu Tribhuvan
30h 25m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
Oct 13
SEA6:30 amSeattle/Tacoma Intl
39h 00m
2 stops
KTM10:15 amKathmandu Tribhuvan
$1,339
Find similar
Qatar Airways
Sep 26
KTM7:05 pmKathmandu Tribhuvan
30h 25m
1 stop
SEA12:45 pmSeattle/Tacoma Intl
Oct 12
SEA9:15 pmSeattle/Tacoma Intl
48h 15m
2 stops
KTM10:15 amKathmandu Tribhuvan
$1,352
Find similar

Emirates flights from Kathmandu to Seattle

Our best Emirates deals on Kathmandu to Seattle flight tickets
Emirates
Oct 1
KTM12:20 amKathmandu Tribhuvan
25h 50m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Nov 21
SEA4:05 pmSeattle/Tacoma Intl
26h 30m
1 stop
KTM8:20 amKathmandu Tribhuvan
$1,593
Find similar
Emirates
Sep 2
KTM9:00 amKathmandu Tribhuvan
41h 10m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Sep 19
SEA5:15 pmSeattle/Tacoma Intl
36h 25m
1 stop
KTM6:25 pmKathmandu Tribhuvan
$1,905
Find similar
Emirates
Sep 1
KTM12:20 amKathmandu Tribhuvan
25h 50m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Sep 19
SEA5:15 pmSeattle/Tacoma Intl
41h 20m
1 stop
KTM11:20 pmKathmandu Tribhuvan
$2,886
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Kathmandu to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 28, 2025.
Use the filters below to find and compare flights from Kathmandu to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sun 9/28

6:00 pm-8:09 pm

2 stops38h 54m

Seattle/Tacoma Intl

Fri 10/10

4:30 pm-5:50 pm

1 stop36h 35m

$1,318

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 10/28

1:45 pm-2:20 pm

2 stops37h 20m

Seattle/Tacoma Intl

Tue 11/11

2:00 pm-6:35 pm

2 stops38h 50m

$1,334

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 9/27

7:05 pm-12:45 pm

1 stop30h 25m

Seattle/Tacoma Intl

Mon 10/13

6:30 am-10:15 am

2 stops39h 00m

$1,339

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Tue 10/28

1:45 pm-9:56 pm

2 stops44h 56m

Seattle/Tacoma Intl

Tue 11/11

2:00 pm-6:35 pm

2 stops38h 50m

$1,349

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 9/26

7:05 pm-12:45 pm

1 stop30h 25m

Seattle/Tacoma Intl

Sun 10/12

9:15 pm-10:15 am

2 stops48h 15m

$1,352

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Sat 9/27

7:05 pm-9:58 pm

2 stops39h 38m

Seattle/Tacoma Intl

Wed 10/8

4:30 pm-4:45 pm

1 stop35h 30m

$1,353

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 10/2

10:50 pm-8:45 am

1 stop46h 40m

Seattle/Tacoma Intl

Fri 11/21

8:45 am-9:50 pm

1 stop23h 20m

$1,398

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Fri 9/26

3:05 pm-5:40 pm

2 stops39h 20m

Seattle/Tacoma Intl

Fri 10/10

2:00 pm-2:05 pm

2 stops35h 20m

$1,401

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Thu 9/25

7:40 am-5:15 pm

1 stop22h 20m

Seattle/Tacoma Intl

Tue 10/14

7:10 pm-6:15 am

1 stop22h 20m

$1,591

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

Wed 10/1

12:20 am-1:25 pm

1 stop25h 50m

Seattle/Tacoma Intl

Fri 11/21

4:05 pm-8:20 am

1 stop26h 30m

$1,593

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Kathmandu to Seattle

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

What is the cheapest month to fly to Seattle?

In general, October is the cheapest month to fly from Kathmandu to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,299. If you don’t want to visit Seattle in October, then you should wait until December to fly from Kathmandu, when ticket prices are also cheap, with an average price of $1,380.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Kathmandu is on a Saturday. momondo users have found tickets for Saturday departures for as low as $1,463. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Kathmandu because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,978.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Kathmandu in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,411 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $2,090. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How have Kathmandu to Seattle flight prices changed over time?

As of August 2025, prices for Kathmandu to Seattle flights are approximately 17% cheaper when compared to flights at the same time last year.

When to book flights from Kathmandu to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Kathmandu to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Kathmandu to Seattle (KTM to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kathmandu to Seattle

Direct flights

None
There are no direct flights from Kathmandu to Seattle. There are no popular flight routes from Kathmandu to Seattle.
Search flight deals

  • How far is Kathmandu Tribhuvan to Seattle/Tacoma Intl by plane?

    The distance between Kathmandu Tribhuvan and Seattle/Tacoma Intl is about 6950.3 mi. Flights usually cover this in 22h 20m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl 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 Kathmandu Tribhuvan Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Kathmandu to Seattle?

Best airlines flying from Kathmandu to Seattle

Compare and see reviews for airlines that fly from Kathmandu to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $1,103Free CancellationRating
8.1
1,352 reviews
Search Singapore Airlines flights
Korean AirPriceFrom $1,174Free CancellationRating
8.4
1,133 reviews
Search Korean Air flights
Turkish AirlinesPriceFrom $1,313Free CancellationRating
7.3
3,954 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,598Free CancellationRating
8.1
3,320 reviews
Search Emirates flights

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Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Kathmandu to Seattle. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Kathmandu to Seattle flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Kathmandu and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Kathmandu to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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