Cheap flights from Seattle to Kathmandu from $503
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 3/31. 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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Fly from
Fly to
Route
Depart
Return
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Wed 12/30
8:40 am-9:50 pm
1 stop23h 25m
Kathmandu Tribhuvan
Wed 2/3
10:55 pm-7:05 am
1 stop45h 55m
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Tue 4/6
10:15 am-9:30 pm
1 stop22h 30m
Kathmandu Tribhuvan
Mon 4/19
10:50 pm-8:45 am
1 stop22h 40m
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Tue 4/6
2:35 pm-9:05 am
3 stops29h 45m
Kathmandu Tribhuvan
Mon 4/19
9:40 pm-11:30 am
2 stops26h 35m
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Wed 4/7
10:41 pm-8:40 pm
2 stops33h 14m
Kathmandu Tribhuvan
Wed 4/14
9:40 pm-10:13 pm
2 stops37h 18m
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Mon 4/5
4:25 pm-4:45 pm
1 stop35h 35m
Kathmandu Tribhuvan
Wed 4/21
10:05 am-12:55 pm
1 stop39h 35m
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Wed 4/7
4:25 pm-4:45 pm
1 stop35h 35m
Kathmandu Tribhuvan
Wed 4/14
10:05 am-12:55 pm
1 stop39h 35m
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Sun 2/7
7:05 pm-11:20 am
1 stop26h 30m
Kathmandu Tribhuvan
Thu 2/11
12:45 pm-5:10 pm
1 stop42h 10m
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Sat 1/30
7:05 pm-11:20 am
1 stop26h 30m
Kathmandu Tribhuvan
Sun 2/28
12:45 pm-5:10 pm
1 stop42h 10m
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Thu 12/31
4:05 pm-8:20 am
1 stop26h 30m
Kathmandu Tribhuvan
Thu 3/18
12:30 am-2:35 pm
1 stop26h 50m
SeattleKathmandu
SEA Seattle/Tacoma Intl - KTM Kathmandu Tribhuvan
SEAKTM
Seattle/Tacoma Intl
Wed 10/21
10:44 am-6:55 pm
2 stops43h 26m
Kathmandu Tribhuvan
Thu 11/5
7:35 am-10:51 pm
2 stops53h 01m
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 typical price of a round-trip flight between Seattle and Kathmandu?
Prices are currently low for flights on this route.
Typical prices usually range from $1,110 to $1,382.The lowest price recently found on this route was $1,012.
What is the cheapest month to fly to Kathmandu?
The month of February is another great option to travel to Kathmandu, with average flight prices from Seattle averaging around $1,050.
How far in advance should I book a flight from Seattle 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 $1,250 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 $1,037 on momondo.
Which airport is the most popular layover for flights between Seattle and Kathmandu?
Doha (DOH) was the most common stop: 53% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Seattle to Kathmandu?
Flights via Doha (DOH) offer the lowest average round-trip price of $1,129.
Which layover airport has the shortest travel time from Seattle to Kathmandu?
Flights connecting via Hong Kong (HKG) have the shortest average one-way travel time: 21h 07m.
Which layover airport has the shortest connection time from Seattle to Kathmandu?
Hong Kong (HKG) has the shortest average layover time for this route: 4h 48m.
When to book flights from Seattle to Kathmandu
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
Frequently asked questions about flying from Seattle to Kathmandu
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 30m.
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?
There are 5 operators available for flights from Seattle/Tacoma Intl Airport to Kathmandu Tribhuvan Airport as of October 2026.
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?
momondo data reveals that the most frequently booked airline on the route from Seattle to Kathmandu is Qatar Airways, representing 41% of all bookings. The subsequent popular airlines are Singapore Airlines at 32%, Cathay Pacific at 15%, and Turkish Airlines at 10%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $812 | Free Cancellation | Rating 8.2 1,624 reviews | |||
| PriceFrom $903 | Free Cancellation | Rating 7.6 1,511 reviews | |||
| PriceFrom $966 | Free Cancellation | Rating 7.3 3,724 reviews | |||
| PriceFrom $979 | Free Cancellation | Rating 7.4 4,455 reviews | |||
| PriceFrom $1,166 | Free Cancellation | Rating 8.1 3,672 reviews |
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Book flights to Kathmandu if you plan to visit one of these locationsWhy 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.