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Cheap Flights from Seattle / Tacoma International to Kathmandu

Compare Seattle / Tacoma International to Kathmandu flight deals

Find the cheapest month or even day of the year to fly to Kathmandu

Book the best Kathmandu fare with no extra fees

Flight deals from Seattle / Tacoma International to Kathmandu

Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International Airport to Kathmandu Airport? If you want to travel next month, return fares start from R 22,083. Find the lowest prices on one-way and return tickets right here.
Kathmandu.R 8,509 per passenger.Departing Sun, 6 Sep.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Sun, 6 Sep, arriving in Kathmandu.Price includes taxes and charges.From R 8,509, select.
Kathmandu.R 8,543 per passenger.Departing Mon, 31 Aug.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Seattle / Tacoma International on Mon, 31 Aug, arriving in Kathmandu.Price includes taxes and charges.From R 8,543, select.
Kathmandu.R 9,905 per passenger.Departing Sat, 31 Oct.One-way flight with Asiana Airlines.Outbound indirect flight with Asiana Airlines, departs from Seattle / Tacoma International on Sat, 31 Oct, arriving in Kathmandu.Price includes taxes and charges.From R 9,905, select.
Kathmandu.R 10,341 per passenger.Departing Sat, 14 Nov.One-way flight with Asiana Airlines.Outbound indirect flight with Asiana Airlines, departs from Seattle / Tacoma International on Sat, 14 Nov, arriving in Kathmandu.Price includes taxes and charges.From R 10,341, select.
Kathmandu.R 10,791 per passenger.Departing Wed, 6 Jan.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Wed, 6 Jan, arriving in Kathmandu.Price includes taxes and charges.From R 10,791, select.
Kathmandu.R 11,453 per passenger.Departing Tue, 28 Jul.One-way flight with Asiana Airlines.Outbound indirect flight with Asiana Airlines, departs from Seattle / Tacoma International on Tue, 28 Jul, arriving in Kathmandu.Price includes taxes and charges.From R 11,453, select.
Kathmandu.R 11,874 per passenger.Departing Thu, 3 Dec.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Thu, 3 Dec, arriving in Kathmandu.Price includes taxes and charges.From R 11,874, select.
Kathmandu.R 11,890 per passenger.Departing Mon, 1 Mar.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Mon, 1 Mar, arriving in Kathmandu.Price includes taxes and charges.From R 11,890, select.

Find the cheapest month to fly from Seattle / Tacoma International to Kathmandu

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Kathmandu flights are currently cheapest in September.
Jul
from R 11,453
Aug
from R 8,543
Sep
from R 8,509
Oct
from R 9,905
Nov
from R 10,341
Dec
from R 11,874
Jan
from R 10,791
Feb
Find prices
Mar
from R 11,890
Apr
Find prices
May
Find prices
Jun
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Seattle / Tacoma International to Kathmandu: Alternative routes

Compare routes from Seattle / Tacoma International 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 R 8,509
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Seattle to Kathmandu: Flight information

The things to know before you go.
Cheapest flight foundR 8,509
Cheapest month to flySeptember

Finding cheap flights from Seattle / Tacoma International to Kathmandu: Frequently asked questions

The best price we found for a return flight from Seattle / Tacoma International to Kathmandu is R 17,407. 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.
Currently, there are no airlines that fly direct from Seattle / Tacoma International to Kathmandu. But we found flights with one or more stops from R 17,407.
As of July 2026, there are no flights flying from Seattle / Tacoma International to Kathmandu.
The cheapest month to fly from Seattle / Tacoma International to Kathmandu is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Kathmandu Airport on Friday, 23 October 2026.
No airlines currently offer direct flights between Seattle / Tacoma International Airport and Kathmandu Airport. Most routes have one or more stops.
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.

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.

Currently, Turkish Airlines offers the cheapest flight tickets to Kathmandu.

Travelling from Seattle / Tacoma International Airport (SEA) to Kathmandu Airport (KTM): what you need to know

  • Kathmandu is 13 hours 48 minutes ahead of Seattle and is in the UTC+5:47 timezone.

  • Leave plenty of time to catch your SEA to KTM flight. A good rule of thumb is to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • Travelling during a peak time like July? Public holidays and other popular periods can lead to longer lines at check-in and security. Be extra cautious and arrive up to four hours before international flights and two hours before domestic departures.

  • If you'd like to include a stop along the way, just uncheck 'Direct flights only' when searching for your ticket from Seattle / Tacoma International Airport to Kathmandu Airport. These are the most popular stopovers between SEA and KTM:

    • Istanbul Airport

    • Dubai Airport

    • Hamad International Airport

How to find the cheapest flights from Seattle / Tacoma International Airport (SEA) to Kathmandu Airport (KTM)

  • The lowest price we've found for a one-way Seattle / Tacoma International Airport to Kathmandu Airport flight is R 8,509. A round-trip fare right now is R 17,407. Depending on the availability when you book, these fares may change.

  • It's often best to book in advance if you're looking for cheap tickets from SEA to KTM. That's because flight prices are based on demand, which tends to increase closer to the date of departure.

  • The 'Whole month' search tool shows you the cheapest flights from Seattle / Tacoma International Airport to Kathmandu Airport throughout the entire month. It's a great way to snap up a bargain if your travel dates aren't set in stone.

  • There's no need to check every day to see if fares have dropped when you create a Price Alert. We'll let you know as soon as a special offer becomes available on cheap flights from SEA to KTM.

  • Lock in the right flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Seattle / Tacoma International Airport to Kathmandu Airport, use the 'Sort by' function. You can also filter by airline, arrival and departure times, and number of stops.

Handy information about Seattle / Tacoma International Airport (SEA)

  • Seattle / Tacoma International Airport scores top marks for its on-time performance. 80% of flights that take off from SEA land on time.

  • To reach Seattle / Tacoma International Airport from central Seattle, it'll take around 25 minutes if you're travelling by car. Of course, this depends on traffic conditions. It's approximately 23 kilometres from the airport to the city centre.

  • You can expect a trip time of about 35 minutes on public transport.

  • Get your trip off to a hassle-free start by staying near SEA. Whether you're catching an early flight from Seattle / Tacoma International Airport to Kathmandu Airport or just don't like being rushed, these stays are perfect:

Arriving at Kathmandu Airport (KTM)

  • If you have a late Seattle / Tacoma International Airport to Kathmandu Airport flight, few things top the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and resting shortly after at one of these accommodation options near KTM:

  • Grab a Kathmandu Airport rental car and discover parts of Kathmandu that aren't the typical tourist stops. Browse the options available from Spark Car.

  • Booking your ride from Kathmandu Airport around one week ahead can help you get the best possible rate.

When to fly to Kathmandu Airport (KTM)

  • November is the most popular month for flights from Seattle / Tacoma International Airport to Kathmandu Airport. To avoid the crowds, go to Kathmandu in March.

  • Book your flight from Seattle / Tacoma International Airport to Kathmandu Airport for June if you'd like to explore Kathmandu during its warmest month. Expect temperatures of between 17ºC (63ºF) and 30ºC (86ºF).

  • Search for cheap tickets from SEA to KTM in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 3ºC (37ºF) and 19ºC (66ºF) on average.

Explore more of Nepal

  • Kathmandu has plenty to offer, but there are so many other parts of Nepal just waiting to be discovered. Around 145 kilometres north-west of Kathmandu, a visit to Pokhara will fill your itinerary to the brim. Check out popular attractions like Phewa Lake, Parahawking and Sarangkot View Point.

  • Patan is another sought-after destination in Nepal and is around 6 kilometres south of Kathmandu. No trip is complete without seeing Patan Durbar Square, Hiranya Varna Mahavihar and Kathmandu.

Plan the rest of your trip from Seattle to Kathmandu

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.