CA $1,036 Cheap Flights from Kathmandu (KTM) to Seattle (SEA)

View CA $1,036 flight on Tue, Mar. 17, 2026Opens in a new window

Popular airlines from Tribhuvan Intl. Airport (KTM) to Seattle-Tacoma International Airport (SEA)

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Cheap flights from Kathmandu (KTM) to Seattle (SEA)

Prices were available within the past 7 days and start at CA $1,036 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Kathmandu (KTM) to Seattle (SEA)

February is typically the cheapest month to fly

From CA $1,648 - CA $2,544 per traveller.

Graph displaying average flight prices per month

Flight from Kathmandu to Seattle (KTM - SEA) route information
Origin airport
Tribhuvan Intl.
Destination airport
Seattle - Tacoma Intl.
Distance
11146 km

Kathmandu to Seattle Flights

The easy way to book your flights from Kathmandu to Seattle 

With Expedia, it’s simple to find and book flights to Seattle from Kathmandu whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Kathmandu to Seattle today, tomorrow, or this week.  

 

Save dollars with cheap flights from Tribhuvan Intl., KTM to Seattle - Tacoma Intl., SEA 

Sort your search results by price to find great deals on your flight from Kathmandu to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Kathmandu currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Seattle  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Seattle from Kathmandu 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today.

Frequently asked questions

How much is a flight from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA)?
Round-trip flights between Tribhuvan Intl. Airport and Sea-Tac Airport start from . This figure is based on fares advertised within the last 7 days on Expedia for flights departing within the next year — book now so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Tribhuvan Intl. Airport to Sea-Tac Airport?
Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from KTM to Sea-Tac Airport that have flexible change policies?
Plenty of carriers offer the option to move your flight without charging a fee. All you pay is the cost difference between flights. When looking for Tribhuvan Intl. Airport to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "No change fees" filter for you to select.
How many hours is the flight from Tribhuvan Intl. Airport (KTM) to SEA?
Averaging 19 hours and 3 minutes, the journey from Tribhuvan Intl. Airport (KTM) to SEA is a lengthy one. To make your trip more relaxing, remember to pack a quality neck pillow and some noise-cancelling headphones.
How far is the flight from Tribhuvan Intl. Airport (KTM) to SEA?
With around 11,200 kilometres separating Kathmandu and SeaTac, your flight will be a long one. Pack wisely and make your time on board more comfortable. Things like warm clothing and a good travel pillow can make a big difference.
Which airlines fly direct from Tribhuvan Intl. Airport (KTM) to Sea-Tac Airport?
Unfortunately, there are no airlines that directly fly between Tribhuvan Intl. Airport and Seattle - Tacoma Intl. Airport (SEA). You'll have to book a flight with at least one stop.
Are KTM to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices fluctuate, so not always. While last-minute deals between KTM and SEA are of course possible, it also makes sense to keep a close eye on prices well before you fly. In fact, some airlines advertise their prices up to a year before the departure date. Expedia is continuously updating the best bargains around, so check back often and be ready to lock in your seat when fare prices drop.

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