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Cheap flights from Seattle to Kathmandu from $412

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Kathmandu departing on 1/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Kathmandu

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
10:15 am - 9:45 pmSEA-KTM
22h 45m1 stop
Singapore Airlines Logo
11:00 pm - 8:45 amKTM-SEA
22h 30m1 stop
$1,224Singapore Airlines
Find Deal
dom., mar. 29 - lun., abr. 13
Turkish Airlines Logo
7:00 pm - 11:10 amSEA-KTM
26h 25m1 stop
Turkish Airlines Logo
12:35 pm - 5:05 pmKTM-SEA
42h 15m1 stop
$1,234Turkish Airlines
Find Deal
mar., dic. 30 - lun., ene. 12
Turkish Airlines Logo
7:00 pm - 11:10 amSEA-KTM
26h 25m1 stop
Turkish Airlines Logo
12:35 pm - 5:05 pmKTM-SEA
42h 15m1 stop
$1,239Turkish Airlines
Find Deal
vie., ene. 2 - mar., ene. 13
Singapore Airlines Logo
10:15 am - 9:45 pmSEA-KTM
22h 45m1 stop
Singapore Airlines Logo
11:00 pm - 8:45 amKTM-SEA
22h 30m1 stop
$1,243Singapore Airlines
Find Deal
vie., abr. 3 - vie., abr. 17
Turkish Airlines Logo
7:00 pm - 11:10 amSEA-KTM
26h 25m1 stop
Turkish Airlines Logo
12:35 pm - 5:05 pmKTM-SEA
42h 15m1 stop
$1,244Turkish Airlines
Find Deal
lun., dic. 29 - lun., ene. 12
Cathay Pacific Logo
7:55 pm - 9:30 pmSEA-KTM
35h 50m2 stops
Cathay Pacific Logo
10:55 pm - 2:19 pmKTM-SEA
29h 09m2 stops
$1,249Cathay Pacific
Find Deal
jue., ene. 1 - mié., ene. 14
Cathay Pacific Logo
8:24 am - 9:30 pmSEA-KTM
48h 21m2 stops
Cathay Pacific Logo
10:55 pm - 6:11 pmKTM-SEA
33h 01m2 stops
$1,254Cathay Pacific
Find Deal
vie., oct. 31 - sáb., nov. 8
Multiple Airlines Logo
12:10 am - 12:25 pmSEA-KTM
46h 30m2 stops
Multiple Airlines Logo
1:30 pm - 6:10 pmKTM-SEA
42h 25m2 stops
$1,257Multiple Airlines
Find Deal
mar., nov. 25 - mié., dic. 3
Emirates Logo
5:15 pm - 12:10 amSEA-KTM
42h 10m1 stop
Emirates Logo
1:10 am - 1:25 pmKTM-SEA
25h 00m1 stop
$1,264Emirates
Find Deal
jue., abr. 9 - jue., abr. 23
Emirates Logo
4:05 pm - 11:30 pmSEA-KTM
41h 40m1 stop
Emirates Logo
12:30 am - 12:35 pmKTM-SEA
25h 50m1 stop
$1,268Emirates
Find Deal
dom., ene. 11 - vie., feb. 20

Qatar Airways flights from Seattle to Kathmandu

Our best Qatar Airways deals on Seattle to Kathmandu flight tickets
Qatar Airways
Oct 28
SEA5:05 pmSeattle/Tacoma Intl
27h 55m
1 stop
KTM9:45 amKathmandu Tribhuvan
Nov 11
KTM9:10 amKathmandu Tribhuvan
40h 15m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,430
Find similar
Qatar Airways
Oct 28
SEA5:05 pmSeattle/Tacoma Intl
26h 05m
1 stop
KTM7:55 amKathmandu Tribhuvan
Nov 11
KTM11:00 amKathmandu Tribhuvan
38h 25m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$1,431
Find similar
Qatar Airways
Oct 27
SEA5:05 pmSeattle/Tacoma Intl
26h 05m
1 stop
KTM7:55 amKathmandu Tribhuvan
Oct 30
KTM11:00 amKathmandu Tribhuvan
38h 25m
1 stop
SEA12:40 pmSeattle/Tacoma Intl
$1,449
Find similar

Singapore Airlines flights from Seattle to Kathmandu

Our best Singapore Airlines deals on Seattle to Kathmandu flight tickets
Singapore Airlines
Mar 29
SEA10:15 amSeattle/Tacoma Intl
22h 45m
1 stop
KTM9:45 pmKathmandu Tribhuvan
Apr 13
KTM11:00 pmKathmandu Tribhuvan
22h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,224
Find similar
Singapore Airlines
Apr 3
SEA10:15 amSeattle/Tacoma Intl
22h 45m
1 stop
KTM9:45 pmKathmandu Tribhuvan
Apr 17
KTM11:00 pmKathmandu Tribhuvan
22h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,243
Find similar
Singapore Airlines
Apr 9
SEA10:15 amSeattle/Tacoma Intl
22h 45m
1 stop
KTM9:45 pmKathmandu Tribhuvan
Apr 25
KTM11:00 pmKathmandu Tribhuvan
22h 30m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,270
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Kathmandu 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 octubre 14, 2025.
Use the filters below to find and compare flights from Seattle to Kathmandu that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

dom. 3/29

10:15 am-9:45 pm

1 stop22h 45m

Kathmandu Tribhuvan

lun. 4/13

11:00 pm-8:45 am

1 stop22h 30m

$1,224

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

mar. 12/30

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

lun. 1/12

12:35 pm-5:05 pm

1 stop42h 15m

$1,234

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

vie. 1/2

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

mar. 1/13

12:35 pm-5:05 pm

1 stop42h 15m

$1,239

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

vie. 4/3

10:15 am-9:45 pm

1 stop22h 45m

Kathmandu Tribhuvan

vie. 4/17

11:00 pm-8:45 am

1 stop22h 30m

$1,243

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

lun. 12/29

7:00 pm-11:10 am

1 stop26h 25m

Kathmandu Tribhuvan

lun. 1/12

12:35 pm-5:05 pm

1 stop42h 15m

$1,244

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

jue. 1/1

7:55 pm-9:30 pm

2 stops35h 50m

Kathmandu Tribhuvan

mié. 1/14

10:55 pm-2:19 pm

2 stops29h 09m

$1,249

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

vie. 10/31

8:24 am-9:30 pm

2 stops48h 21m

Kathmandu Tribhuvan

sáb. 11/8

10:55 pm-6:11 pm

2 stops33h 01m

$1,254

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

mar. 11/25

12:10 am-12:25 pm

2 stops46h 30m

Kathmandu Tribhuvan

mié. 12/3

1:30 pm-6:10 pm

2 stops42h 25m

$1,257

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

jue. 4/9

5:15 pm-12:10 am

1 stop42h 10m

Kathmandu Tribhuvan

jue. 4/23

1:10 am-1:25 pm

1 stop25h 00m

$1,264

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

dom. 1/11

4:05 pm-11:30 pm

1 stop41h 40m

Kathmandu Tribhuvan

vie. 2/20

12:30 am-12:35 pm

1 stop25h 50m

$1,268

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 Kathmandu from

How to get the cheapest flight ticket from Seattle 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 January is another great option to travel to Kathmandu, with average flight prices from Seattle averaging around $1,208.

What is the cheapest Seattle/Tacoma Intl to Kathmandu Tribhuvan flight route?

Fly from Seattle/Tacoma Intl to Kathmandu Tribhuvan for the best Seattle/Tacoma Intl - Kathmandu Tribhuvan flight prices

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

You are more likely to see cheaper flights to Kathmandu from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Kathmandu for around $1,362 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kathmandu from Seattle for as low as $1,091 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Kathmandu Tribhuvan flights?

There is only 1 cabin class available to choose from on Seattle/Tacoma Intl to Kathmandu Tribhuvan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to Kathmandu flight prices changed over time?

As of October 2025, prices for Seattle to Kathmandu flights are approximately 4% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Kathmandu

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

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

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

Direct flights

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

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

    A flight from Seattle/Tacoma Intl to Kathmandu Tribhuvan will travel around 6950.3 mi. In terms of flight time, this usually takes a little over 22h 10m.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport.

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

    The travel and health documents you'll need for your trip to Kathmandu Tribhuvan Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Kathmandu Tribhuvan Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Seattle to Kathmandu

Compare and see reviews for airlines that fly from Seattle to Kathmandu with momondo
Airline
Rating
Free Cancellation
Price
Singapore AirlinesPriceFrom $899Free CancellationRating
8.1
1,379 reviews
Search Singapore Airlines flights
Turkish AirlinesPriceFrom $1,094Free CancellationRating
7.3
4,007 reviews
Search Turkish Airlines flights
EmiratesPriceFrom $1,138Free CancellationRating
8.1
3,375 reviews
Search Emirates flights
Cathay PacificPriceFrom $1,172Free CancellationRating
7.6
1,023 reviews
Search Cathay Pacific flights
Qatar AirwaysPriceFrom $1,174Free CancellationRating
7.4
3,647 reviews
Search Qatar Airways flights

Traveling to a place near Kathmandu?

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

Why use momondo?

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

It is quick and easy to find Seattle to Kathmandu flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Kathmandu that suits you.

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

momondo does allow users to show only those flights to Kathmandu from Seattle which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Kathmandu from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Kathmandu, momondo offers a useful price alert feature which will track prices for flights to Kathmandu from Seattle and alert you when they change.

An easier way to manage your Kathmandu trip

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Fly your favorite airline to Kathmandu

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
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American Airlines
United Airlines
Turkish Airlines
Lufthansa
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British Airways
Qatar Airways
Spirit Airlines
Ryanair
Alaska Airlines
Emirates