$733 Cheap Flights from Kathmandu (KTM) to Seattle (SEA)

View $733 flight on Wed, Nov 19, 2025Opens 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 to Seattle (KTM-SEA)

Prices were available within the past 7 days and start at $733 for one-way flights and $1,117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Singapore Airlines
Sun, Apr 26 - Sat, Aug 22
KTM
Kathmandu
SEA
Seattle
$1,117 Roundtrip, found 3 days ago
$1,117
Roundtrip
found 3 days ago
Select Singapore Airlines flight, departing Sun, Apr 26 from Kathmandu to Seattle, returning Sat, Aug 22, priced at $1,117 found 3 days ago
Singapore Airlines
Mon, Mar 9 - Fri, Aug 21
KTM
Kathmandu
SEA
Seattle
$1,144 Roundtrip, found 2 days ago
$1,144
Roundtrip
found 2 days ago
Select Singapore Airlines flight, departing Mon, Mar 9 from Kathmandu to Seattle, returning Fri, Aug 21, priced at $1,144 found 2 days ago
Singapore Airlines
Sun, Apr 26 - Sat, Aug 22
KTM
Kathmandu
SEA
Seattle
$1,152 Roundtrip, found 3 days ago
$1,152
Roundtrip
found 3 days ago
Select Singapore Airlines flight, departing Sun, Apr 26 from Kathmandu to Seattle, returning Sat, Aug 22, priced at $1,152 found 3 days ago
Singapore Airlines
Mon, Mar 9 - Fri, Aug 21
KTM
Kathmandu
SEA
Seattle
$1,179 Roundtrip, found 2 days ago
$1,179
Roundtrip
found 2 days ago
Select Singapore Airlines flight, departing Mon, Mar 9 from Kathmandu to Seattle, returning Fri, Aug 21, priced at $1,179 found 2 days ago
Singapore Airlines
Tue, Feb 3 - Thu, Mar 12
KTM
Kathmandu
SEA
Seattle
$1,191 Roundtrip, found 5 days ago
$1,191
Roundtrip
found 5 days ago
Select Singapore Airlines flight, departing Tue, Feb 3 from Kathmandu to Seattle, returning Thu, Mar 12, priced at $1,191 found 5 days ago
Singapore Airlines
Mon, Mar 30 - Sun, Apr 19
KTM
Kathmandu
SEA
Seattle
$1,196 Roundtrip, found 14 hours ago
$1,196
Roundtrip
found 14 hours ago
Select Singapore Airlines flight, departing Mon, Mar 30 from Kathmandu to Seattle, returning Sun, Apr 19, priced at $1,196 found 14 hours ago
Korean Air
Sat, Jan 24 - Sun, Jul 12
KTM
Kathmandu
SEA
Seattle
$1,201 Roundtrip, found 4 days ago
$1,201
Roundtrip
found 4 days ago
Select Korean Air flight, departing Sat, Jan 24 from Kathmandu to Seattle, returning Sun, Jul 12, priced at $1,201 found 4 days ago
KLM
Tue, Oct 21 - Tue, Oct 28
KTM
Kathmandu
SEA
Seattle
$1,293 Roundtrip, found 4 hours ago
$1,293
Roundtrip
found 4 hours ago
Select KLM flight, departing Tue, Oct 21 from Kathmandu to Seattle, returning Tue, Oct 28, priced at $1,293 found 4 hours ago
Qatar Airways
Wed, Oct 15 - Wed, Oct 22
KTM
Kathmandu
SEA
Seattle
$1,316 Roundtrip, found 4 hours ago
$1,316
Roundtrip
found 4 hours ago
Select Qatar Airways flight, departing Wed, Oct 15 from Kathmandu to Seattle, returning Wed, Oct 22, priced at $1,316 found 4 hours ago
Turkish Airlines
Thu, Oct 16 - Sun, Oct 19
KTM
Kathmandu
SEA
Seattle
$1,429 Roundtrip, found 4 hours ago
$1,429
Roundtrip
found 4 hours ago
Select Turkish Airlines flight, departing Thu, Oct 16 from Kathmandu to Seattle, returning Sun, Oct 19, priced at $1,429 found 4 hours ago

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

February is typically the cheapest month to fly

From $1,197 - $1,846 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $1,316
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $1,316
Flights from Kathmandu (KTM) to Seattle (SEA)
Origin airport
Tribhuvan Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Cathay Pacific, Emirates, Etihad Airways, KLM, Korean Air, Qatar Airways, Singapore Airlines, Turkish Airlines
Roundtrip price
$1,117
Distance
6966 mi

Kathmandu to Seattle Flights

The cheapest times to fly from Kathmandu to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Kathmandu to Seattle are during the month of April. You can find some of the cheapest flights from Kathmandu to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Kathmandu to Seattle

Sunday is one of the best days to book for cheap flights from Kathmandu to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Kathmandu to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Kathmandu to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $733 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Kathmandu to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Kathmandu to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA) cost?
Get a cheap one-way flight from $733 or cheap return flight from $1,117 from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA)?
Planning your getaway for April is a good way to save, as it's the cheapest month for flights between KTM and SEA. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA)?
To find the cheapest airline that'll fly you from KTM to SEA, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA)?
You'll need to take a flight with a layover if you're traveling from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from KTM to SEA?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid possible delays on the Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA) route, fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until right before your break to book a ticket from KTM to SEA generally means paying more. While you may come across some last-minute deals, there's no guarantee. Be flexible with your itinerary to boost your chances of scoring a bargain.
Is it cheaper to book a KTM to SEA flight and hotel package?
You'll typically save money by booking a KTM to SEA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your preferred flights and accommodations, consider adding extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Tribhuvan Intl. Airport (KTM) to Seattle - Tacoma Intl. Airport (SEA)?
In most instances, you're able to cancel or reschedule your KTM to SEA flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want more details, visit our Customer Service portal.

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*Available to One Key members.