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Cheap flights from Kathmandu to Seattle from $623

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 6/2. 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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0 bags

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Find the cheapest flights from Kathmandu to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 6:10 pm
SEA
-
KTM
60h 10m
2 stops
$1,369Multiple Airlines
lun., jun. 1 - mié., jun. 10
Multiple Airlines Logo
9:10 pm - 12:27 pm
KTM
-
SEA
28h 02m
3 stops
Multiple Airlines Logo
8:42 pm - 11:00 pm
SEA
-
KTM
37h 33m
3 stops
$1,418Multiple Airlines
mar., jun. 23 - mié., jun. 24
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 6:10 pm
SEA
-
KTM
36h 10m
2 stops
$1,421Multiple Airlines
vie., may. 22 - vie., may. 29
Korean Air Logo
7:20 pm - 11:00 am
KTM
-
SEA
28h 25m
1 stop
Korean Air Logo
1:20 pm - 5:15 pm
SEA
-
KTM
39h 10m
1 stop
$1,435Korean Air
sáb., jul. 11 - jue., jul. 30
Multiple Airlines Logo
7:10 pm - 2:45 pm
KTM
-
SEA
32h 20m
1 stop
Multiple Airlines Logo
8:53 am - 8:50 am
SEA
-
KTM
35h 12m
2 stops
$1,445Multiple Airlines
mié., jun. 10 - mié., jun. 17
Multiple Airlines Logo
7:10 pm - 8:13 am
KTM
-
SEA
49h 48m
2 stops
Multiple Airlines Logo
4:05 pm - 5:30 pm
SEA
-
KTM
35h 40m
1 stop
$1,449Multiple Airlines
jue., jun. 11 - sáb., nov. 7
Korean Air Logo
7:20 pm - 11:00 am
KTM
-
SEA
28h 25m
1 stop
Korean Air Logo
1:05 pm - 5:15 pm
SEA
-
KTM
39h 25m
1 stop
$1,461Korean Air
sáb., jul. 11 - dom., ago. 2
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 6:10 pm
SEA
-
KTM
36h 10m
2 stops
$1,469Multiple Airlines
mié., jun. 10 - mié., jun. 17
Multiple Airlines Logo
1:25 pm - 1:25 pm
KTM
-
SEA
36h 45m
2 stops
Multiple Airlines Logo
5:15 pm - 11:35 pm
SEA
-
KTM
41h 35m
1 stop
$1,492Multiple Airlines
lun., jun. 1 - mié., jun. 10
Multiple Airlines Logo
7:10 pm - 2:45 pm
KTM
-
SEA
32h 20m
1 stop
Multiple Airlines Logo
4:25 pm - 4:45 pm
SEA
-
KTM
35h 35m
1 stop
$1,505Multiple Airlines
mié., jun. 10 - mié., jun. 17

Emirates flights from Kathmandu to Seattle

Our best Emirates deals on Kathmandu to Seattle flight tickets
Emirates
Jun 1
KTM7:55 pmKathmandu Tribhuvan
30h 15m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Jun 10
SEA5:15 pmSeattle/Tacoma Intl
26h 05m
1 stop
KTM8:05 amKathmandu Tribhuvan
$1,621
Emirates
May 22
KTM3:35 pmKathmandu Tribhuvan
34h 35m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
May 29
SEA5:15 pmSeattle/Tacoma Intl
26h 05m
1 stop
KTM8:05 amKathmandu Tribhuvan
$1,626
Emirates
Jun 24
KTM9:05 amKathmandu Tribhuvan
41h 05m
1 stop
SEA1:25 pmSeattle/Tacoma Intl
Aug 5
SEA5:15 pmSeattle/Tacoma Intl
26h 05m
1 stop
KTM8:05 amKathmandu Tribhuvan
$1,653

Turkish Airlines flights from Kathmandu to Seattle

Our best Turkish Airlines deals on Kathmandu to Seattle flight tickets
Turkish Airlines
Jul 13
KTM7:40 amKathmandu Tribhuvan
49h 58m
2 stops
SEA8:53 pmSeattle/Tacoma Intl
Aug 1
SEA7:10 pmSeattle/Tacoma Intl
22h 20m
1 stop
KTM6:15 amKathmandu Tribhuvan
$1,739
Turkish Airlines
May 7
KTM8:10 amKathmandu Tribhuvan
21h 50m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
Feb 21
SEA7:00 pmSeattle/Tacoma Intl
26h 25m
1 stop
KTM11:10 amKathmandu Tribhuvan
$2,463
Turkish Airlines
May 1
KTM8:10 amKathmandu Tribhuvan
21h 50m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
Feb 7
SEA7:00 pmSeattle/Tacoma Intl
26h 25m
1 stop
KTM11:10 amKathmandu Tribhuvan
$2,475

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 abril 28, 2026.
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

Cheapest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

lun. 6/1

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

mié. 6/10

5:15 pm-6:10 pm

2 stops60h 10m

$1,369
Quickest round-trip

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

mar. 6/23

9:10 pm-12:27 pm

3 stops28h 02m

Seattle/Tacoma Intl

mié. 6/24

8:42 pm-11:00 pm

3 stops37h 33m

$1,418

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

vie. 5/22

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

vie. 5/29

5:15 pm-6:10 pm

2 stops36h 10m

$1,421

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

sáb. 7/11

7:20 pm-11:00 am

1 stop28h 25m

Seattle/Tacoma Intl

jue. 7/30

1:20 pm-5:15 pm

1 stop39h 10m

$1,435

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

mié. 6/10

7:10 pm-2:45 pm

1 stop32h 20m

Seattle/Tacoma Intl

mié. 6/17

8:53 am-8:50 am

2 stops35h 12m

$1,445

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

jue. 6/11

7:10 pm-8:13 am

2 stops49h 48m

Seattle/Tacoma Intl

sáb. 11/7

4:05 pm-5:30 pm

1 stop35h 40m

$1,449

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

sáb. 7/11

7:20 pm-11:00 am

1 stop28h 25m

Seattle/Tacoma Intl

dom. 8/2

1:05 pm-5:15 pm

1 stop39h 25m

$1,461

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

mié. 6/10

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

mié. 6/17

5:15 pm-6:10 pm

2 stops36h 10m

$1,469

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

lun. 6/1

1:25 pm-1:25 pm

2 stops36h 45m

Seattle/Tacoma Intl

mié. 6/10

5:15 pm-11:35 pm

1 stop41h 35m

$1,492

KathmanduSeattle

KTM - SEA

KTMSEA

Kathmandu Tribhuvan

mié. 6/10

7:10 pm-2:45 pm

1 stop32h 20m

Seattle/Tacoma Intl

mié. 6/17

4:25 pm-4:45 pm

1 stop35h 35m

$1,505

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 $0. If you don’t want to visit Seattle in October, then you should wait until January to fly from Kathmandu, when ticket prices are also cheap, with an average price of $0.

Can stopping save me money on Kathmandu to Seattle flights?

You could potentially save up to 7% on your flight if you consider stops on a Kathmandu to Seattle flight.

How have Kathmandu to Seattle flight prices changed over time?

As of April 2026, prices for Kathmandu to Seattle flights are approximately 11% more expensive 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

Fastest flight time

25h 35m

Direct flights

None
The fastest flight from Kathmandu to Seattle takes 25h 35m
There are no direct flights from Kathmandu to Seattle. There are no popular flight routes from Kathmandu to Seattle.
Search flight deals

Frequently asked questions about flying from Kathmandu to Seattle

  • 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 25h 35m, 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 $1,148Free CancellationRating
8.2
1,502 reviews
Search Singapore Airlines flights

Traveling to a place near Seattle?

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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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