Cheap Flights from Seattle to Kathmandu

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Flight deals from Seattle to Kathmandu Airport

Looking for a cheap last-minute deal or the best return flight from Seattle to Kathmandu Airport? If you want to travel next month, return fares start from $1,507. Find the lowest prices on one-way and return tickets right here.

Kathmandu.$1,507 per passenger.Departing Mon, 26 Oct, returning Mon, 2 Nov.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Mon, 26 Oct, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Mon, 2 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,507, select.

Kathmandu.$1,507 per passenger.Departing Tue, 6 Oct, returning Sun, 25 Oct.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 6 Oct, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Sun, 25 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,507, select.

Kathmandu.$1,507 per passenger.Departing Mon, 7 Sep, returning Mon, 28 Sep.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Mon, 7 Sep, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Mon, 28 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,507, select.

Kathmandu.$1,507 per passenger.Departing Mon, 13 Apr, returning Mon, 27 Apr.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Mon, 13 Apr, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Mon, 27 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,507, select.

Kathmandu.$1,507 per passenger.Departing Thu, 16 Apr, returning Sun, 31 May.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Thu, 16 Apr, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Sun, 31 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,507, select.

Kathmandu.$1,519 per passenger.Departing Tue, 15 Sep, returning Wed, 25 Nov.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 15 Sep, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Wed, 25 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,519, select.

Kathmandu.$1,590 per passenger.Departing Fri, 21 Aug, returning Wed, 9 Sep.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Fri, 21 Aug, arriving in Kathmandu.Inbound indirect flight with Singapore Airlines, departs from Kathmandu on Wed, 9 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,590, select.

Kathmandu.$1,624 per passenger.Departing Sat, 18 Apr, returning Tue, 2 Jun.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Sat, 18 Apr, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Tue, 2 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,624, select.

Kathmandu.$1,815 per passenger.Departing Wed, 10 Jun, returning Wed, 1 Jul.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Wed, 10 Jun, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Wed, 1 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,815, select.

Kathmandu.$1,815 per passenger.Departing Thu, 4 Jun, returning Wed, 17 Jun.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Thu, 4 Jun, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Wed, 17 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,815, select.

Kathmandu.$1,817 per passenger.Departing Wed, 17 Jun, returning Tue, 25 Aug.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Wed, 17 Jun, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Tue, 25 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,817, select.

Kathmandu.$1,838 per passenger.Departing Sun, 8 Nov, returning Wed, 23 Dec.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Sun, 8 Nov, arriving in Kathmandu.Inbound indirect flight with Singapore Airlines, departs from Kathmandu on Wed, 23 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,838, select.

Kathmandu.$1,853 per passenger.Departing Tue, 19 May, returning Tue, 9 Jun.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 19 May, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Tue, 9 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,853, select.

Kathmandu.$1,981 per passenger.Departing Wed, 1 Jul, returning Wed, 8 Jul.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Wed, 1 Jul, arriving in Kathmandu.Inbound indirect flight with Cathay Pacific, departs from Kathmandu on Wed, 8 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,981, select.

Kathmandu.$2,017 per passenger.Departing Tue, 28 Jul, returning Sat, 5 Sep.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Tue, 28 Jul, arriving in Kathmandu.Inbound indirect flight with Singapore Airlines, departs from Kathmandu on Sat, 5 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $2,017, select.

Kathmandu.$2,120 per passenger.Departing Thu, 30 Apr, returning Wed, 4 Nov.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Thu, 30 Apr, arriving in Kathmandu.Inbound indirect flight with Singapore Airlines, departs from Kathmandu on Wed, 4 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $2,120, select.

Find the cheapest month to fly from Seattle to Kathmandu

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Kathmandu flights are currently cheapest in April.

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Seattle to Kathmandu: Alternative routes

Compare routes from Seattle to Kathmandu below. You may find an airport to fly into that's cheaper, faster, or easier than Kathmandu.

Kathmandu

5km from central Kathmandu

ClosestCheapest

from $1,507

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Seattle to Kathmandu: Flight information

The things to know before you go.

Cheapest flight found	$1,502
Cheapest month to fly	April

Finding cheap flights from Seattle to Kathmandu: Frequently asked questions

How much are return flights from Seattle to Kathmandu?

The best price we found for a return flight from Seattle to Kathmandu is $1,507. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Seattle to Kathmandu?

Currently, there are no airlines that fly direct from Seattle to Kathmandu. But we found flights with one stop from $1,507.

How many flights are there a week from Seattle to Kathmandu?

As of March 2026, there are no flights flying from Seattle to Kathmandu.

When is the cheapest time to fly from Seattle to Kathmandu?

The cheapest month to fly from Seattle to Kathmandu is usually April.

Which upcoming date is cheapest to fly from Seattle to Kathmandu Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Kathmandu Airport on Monday, 13 April 2026.

Can I get a direct flight from Seattle to Kathmandu Airport?

No airlines currently offer direct flights between Seattle and Kathmandu Airport. Most routes have one or more stops.

How can I find the best flight deal to Kathmandu?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Kathmandu but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Kathmandu?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Kathmandu is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Seattle to Kathmandu with?

The cheapest airline that flies to Kathmandu is Cathay Pacific .

Flying from Seattle to Tribhuvan International Airport (KTM): What you need to know

There are two main airports you can start your journey from in Seattle. Check out your options leaving from Seattle-Tacoma International Airport (SEA) or Lake Union Sea Plane Base Airport (LKE) when booking your flight from Seattle to Tribhuvan International Airport (KTM).
Kathmandu is 12 hours 48 minutes ahead of Seattle. Tribhuvan International Airport is located in Kathmandu, which follows the UTC+5:47 timezone.
For stress-free travel, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably board your flight from Seattle to KTM.
With more travellers during high season, plan to get to your terminal even earlier. Two hours for domestic flights and up to four for international journeys will allow extra time for delays.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

A stopover is the perfect opportunity to take a break from travelling and maybe even visit a new city. When searching for cheap flights from Seattle to KTM leaving from Seattle-Tacoma International Airport (SEA), deselect the 'Direct flights only' box to find all potential stops. Here's where you could connect through:
- Istanbul Ataturk Airport (IST)
- Dubai Airport (DXB)
- Hamad International Airport (DOH)
The journey from central Seattle to SEA takes about 55 minutes on public transport. If you ride-share, drive or get a cab, you'll cover the 23 kilometres in 20 minutes or so, depending on traffic.
Looking for a convenient hotel near Seattle-Tacoma International Airport? If you've booked an early flight from Seattle to Tribhuvan International Airport, these accommodation options will put you conveniently close to check-in:
Seattle-Tacoma International Airport gets high marks for on-time performance. 81.27% of flights that take off from SEA reach their destination on time.

Lake Union Sea Plane Base Airport (LKE)

LKE is around 3 kilometres from central Seattle. It'll take 10 minutes or so to get to the airport by car from the city centre. Public transport takes roughly 25 minutes.
Start your holiday early with an additional night away from home. Before catching your Seattle to KTM flight, kick back in one of these hotels near Lake Union Sea Plane Base Airport:

About Tribhuvan International Airport (KTM)

Reserve a hotel near KTM if you're catching a late flight from Seattle to Tribhuvan International Airport. Pick one of these options and avoid the hassle of a long transfer:
Go beyond Kathmandu and explore places that aren't found in every travel guide with your own wheels. You can grab a Tribhuvan International Airport rental car from Spark Car.
To get the best deal, reserve your vehicle around one week ahead of your Seattle to Tribhuvan International Airport flight.

How to find the cheapest flights from Seattle to Tribhuvan International Airport (KTM)

Right now, $635 is the lowest price we've found for a one-way ticket from Seattle to Tribhuvan International Airport. The cheapest price for a return flight is $1,502. Remember fares can change due to availability at the time of booking.
Booking early is often the key to scoring a cheap flight from Seattle to KTM. Fares tend to rise as demand increases, so the closer you get to departure, the more expensive your ticket may be.
Affordable Seattle to Tribhuvan International Airport tickets are easier to find when your travel dates are flexible. Try using the 'Whole month' search tool to compare fares throughout the month and then choose the cheapest day.
Locking in a cheap flight ticket from Seattle to KTM is a piece of cake with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you as soon as the price has dropped.
Tailor your travel plans using filters. Pick your preferred departure and arrival times, total journey duration and airlines. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' flights from Seattle to Tribhuvan International Airport.

The best time to fly from Seattle to Tribhuvan International Airport (KTM)

Picture the kind of break you want when picking your flight dates. February is the quietest month to visit Kathmandu. October is when most people book flights from Seattle to Tribhuvan International Airport (KTM), which may be ideal if you'd rather travel when it's busy.
Book a Seattle to KTM flight ticket departing in June if you want to experience the city during its warmest month. You can expect temperatures in Kathmandu to range from 17ºC to 28ºC.
Look for cheap tickets from Seattle to Tribhuvan International Airport in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 3ºC and 18ºC.

More about Kathmandu

Start your Kathmandu trip right by choosing the ideal place to stay. Once you've booked your flight from Seattle to Tribhuvan International Airport, check out our range of hotels including:
Every great journey has to include some sightseeing. Kathmandu Durbar Square, Annapurna Base Camp Trek and Himalaya Discovery are essential stops on your Kathmandu itinerary.

Explore more of Nepal

You've done Kathmandu, now it's time to explore other corners of Nepal. Travel around 145 kilometres north-west to Pokhara to tick off its leading sights. From Viewpoint to Pokhara Lakeside and Sarangkot sunrise pokhara, you'll have a packed itinerary ahead.
If you're eager to discover another corner of Nepal, head for Biratnagar, roughly 241 kilometres south-east of Kathmandu. Haleshi Mahadev Mandir, Birateshwor Shiva Temple and Shiva Mandir are among its highlights.