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Kathmandu

$345+ Cheap flights from Seattle (SEA) to Kathmandu (KTM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KTM
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from Seattle to Kathmandu

Cheapest flights from Seattle to Kathmandu
Explore the most affordable flight options available from Seattle to Kathmandu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Cathay Pacific deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:31 pmSEA - KTM
2 stops42h 14mMultiple Airlines
Mon 11/1710:55 pmKTM - SEA
2 stops36h 50mMultiple Airlines
Deal found 11/12$1,134
This oojo deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:55 pmSEA - KTM
2 stops59h 50mCathay Pacific
Tue 2/1010:55 pmKTM - SEA
2 stops38h 49mCathay Pacific
Deal found 11/11$1,168
This FlightHub deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:25 amSEA - KTM
2 stops49h 20mMultiple Airlines
Thu 11/2710:55 pmKTM - SEA
2 stops34h 06mMultiple Airlines
Deal found 11/11$1,178
This Orbitz deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/273:32 pmSEA - KTM
2 stops40h 13mMultiple Airlines
Fri 12/1210:55 pmKTM - SEA
2 stops36h 49mMultiple Airlines
Deal found 11/11$1,212
This Justfly.com deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/292:35 pmSEA - KTM
2 stops41h 10mMultiple Airlines
Sat 12/610:55 pmKTM - SEA
2 stops34h 06mMultiple Airlines
Deal found 11/13$1,228
This Mytrip deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2412:10 amSEA - KTM
3 stops31h 35mMultiple Airlines
Tue 12/910:20 pmKTM - SEA
3 stops34h 41mMultiple Airlines
Deal found 11/11$1,251
This Mytrip deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2712:10 amSEA - KTM
2 stops26h 05mMultiple Airlines
Sun 12/211:30 pmKTM - SEA
3 stops47h 01mMultiple Airlines
Deal found 11/10$1,252
This Trip.com deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2412:10 amSEA - KTM
2 stops33h 30mMultiple Airlines
Wed 12/312:25 amKTM - SEA
2 stops31h 30mMultiple Airlines
Deal found 11/10$1,288
This Mytrip deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2712:10 amSEA - KTM
2 stops26h 05mMultiple Airlines
Sat 12/136:30 amKTM - SEA
3 stops45h 46mMultiple Airlines
Deal found 11/12$1,304

Cheap flight deals from Seattle to Kathmandu

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Kathmandu (KTM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 13, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$1,097
(oojo)

One-way from

$345
(FlightHub)

Popular in

December

Cheapest in

April

Average price

$1,326
Provider with most accurate pricing for Seattle/Tacoma Intl-Kathmandu Tribhuvan flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Kathmandu Tribhuvan flights.
Search Deals
From Seattle/Tacoma Intl to Kathmandu Tribhuvan
Search Deals
One-way flight from Seattle/Tacoma Intl to Kathmandu Tribhuvan
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Kathmandu that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Seattle to Kathmandu that are best for you.

Fly from

Seattle

Fly to

Kathmandu

Route

Depart

Return

Price

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Fri 2/6

7:55 pm-9:30 pm

2 stops59h 50m

Kathmandu Tribhuvan

Mon 2/16

10:55 pm-4:04 pm

2 stops30h 54m

$1,135

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 2/3

8:25 am-5:50 pm

2 stops43h 40m

Kathmandu Tribhuvan

Sun 2/22

7:05 pm-11:40 am

1 stop30h 20m

$1,146

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 2/5

3:57 pm-9:30 pm

2 stops39h 48m

Kathmandu Tribhuvan

Fri 2/20

10:55 pm-5:00 pm

2 stops31h 50m

$1,147

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 1/31

4:05 pm-7:55 am

1 stop26h 05m

Kathmandu Tribhuvan

Mon 2/16

9:10 am-6:40 pm

2 stops47h 15m

$1,148

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Fri 2/6

4:05 pm-5:50 pm

1 stop36h 00m

Kathmandu Tribhuvan

Mon 2/16

9:10 am-6:40 pm

2 stops47h 15m

$1,151

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 2/2

4:05 pm-5:50 pm

1 stop36h 00m

Kathmandu Tribhuvan

Sun 2/22

5:40 pm-8:47 pm

2 stops40h 52m

$1,153

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 1/22

8:00 pm-11:20 am

2 stops25h 35m

Kathmandu Tribhuvan

Wed 2/11

10:20 pm-7:16 pm

3 stops34h 41m

$1,163

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Fri 3/20

8:05 am-4:25 pm

2 stops43h 35m

Kathmandu Tribhuvan

Fri 3/27

9:10 am-12:40 pm

1 stop40h 15m

$1,182

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Sat 1/31

8:25 am-7:55 am

2 stops33h 45m

Kathmandu Tribhuvan

Sun 2/22

7:05 pm-11:40 am

1 stop30h 20m

$1,183

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Fri 2/6

7:55 pm-9:30 pm

2 stops59h 50m

Kathmandu Tribhuvan

Fri 2/20

10:55 pm-5:00 pm

2 stops31h 50m

$1,191

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 21 results
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Compare providers for flights from Seattle to Kathmandu

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Kathmandu in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
Trip.comPrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Kathmandu flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Seattle-Kathmandu flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from Seattle-Kathmandu flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Kathmandu flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Kathmandu flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Kathmandu

Have a flexible travel schedule? Discover the best time to fly to Kathmandu from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Kathmandu

How far ahead should I book a flight from Seattle to Kathmandu?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Kathmandu. Price data was last updated on November 7, 2025.

Booking 15 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Kathmandu. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Kathmandu?

Currently, August is the cheapest month in which you can book a flight from Seattle to Kathmandu (average of $869). Flying from Seattle to Kathmandu in June is currently the most expensive (average of $1,197). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to KTM?

Find hourly flight availability from Seattle to Kathmandu. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

One of the essential ways to save on airfare from Seattle to Kathmandu is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 31% on airfare.

Reviews of airlines servicing Kathmandu

Get insights into the airlines that provide service to Kathmandu. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kathmandu. Reviews last updated November 13, 2025.
See what other customers who have flown with Emirates, Singapore Airlines, and Cathay Pacific from Seattle to Kathmandu have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,409 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,409 reviews
Emirates
8.1
Very good
3,409 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Singapore Airlines
8.1
Very good
1,401 reviews
Emirates
8.1
Very good
3,409 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Cathay Pacific
7.6
Good
1,058 reviews
Emirates
8.1
Very good
3,409 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Qatar Airways
7.4
Good
3,662 reviews
Emirates
8.1
Very good
3,409 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Turkish Airlines
7.3
Good
4,043 reviews
Emirates
8.1
Very good
3,409 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Comfort

8.0

Overall

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Kathmandu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Kathmandu?

    Cathay Pacific and Qatar Airways can get you from Seattle to Kathmandu in just under 43h 40m. Your travel time can differ by up to 16h 10m. The distance between Seattle and Kathmandu is about 6962 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Seattle to Kathmandu round-trip?

    Singapore Airlines, at $898, was found to be the cheapest airline from Seattle to Kathmandu.Alternate airlines to your destination round-trip include Turkish Airlines and Emirates. Singapore Airlines is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • Where are the most common layover locations when flying from Seattle to Kathmandu?

    Flights departing from Seattle and landing in Kathmandu layover in Singapore most frequently. Istanbul is the second most popular location for layovers on flights from Seattle to Kathmandu.

  • What are some popular things to do or see while on a layover in Singapore?

    Singapore travelers tend to visit Sentosa, Universal Studios Singapore, and Geylang Serai New Market more than anywhere else. Travelers on a layover in Singapore can visit Sentosa, Universal Studios Singapore, and Geylang Serai New Market, by traveling 13.4 mi, 13.4 mi, and 6.9 mi, respectively after landing at Singapore Changi. Those landing in Singapore looking to spend some time exploring during their layover can rent a car for about $109 per day.

  • What are some popular points of interest to see during a layover in Istanbul?

    Taksim Square, Beyazit Meydani, and Laleli Camii are the most popular attractions in Istanbul if you're in need of something to do during your layover. Taksim Square, Beyazit Meydani, and Laleli Camii can be accessed by traveling approximately 20.8 mi, 21.7 mi, and 21.5 mi, respectively from Istanbul. Those on a layover in Istanbul in need of a rental car can book one at Istanbul for about $37.

  • Where are the least popular layover locations for Seattle to Kathmandu flights?

    Seattle to Kathmandu flights have a layover in Doha least often.

  • Can I find deals for flights from Seattle to Kathmandu that include hotel bookings?

    Yes. In addition to deals on Seattle to Kathmandu flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Kathmandu?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Kathmandu.

  • Can I find deals for business class flights from Seattle to Kathmandu?

    Yes. Cheapflights offers flight deals from Seattle to Kathmandu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Kathmandu?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Kathmandu (average of $869). Flying from Seattle to Kathmandu in June is currently the most expensive (average of $1,197). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Kathmandu?

Book flights to Kathmandu if you plan to visit one of these locations
Nagarkot

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Alternative routes for Seattle to Kathmandu

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Kathmandu flights
Pullman to Kathmandu flights
Spokane to Kathmandu flights

Top 5 airlines flying from Seattle to Kathmandu

Discover the top 5 airlines that operate flights from Seattle to Kathmandu. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$898Average$1,185FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,081Average$1,343FlexibilityNo cancel feeOn-time77%
EmiratesCheapest$1,138Average$1,341FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,150Average$1,659FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,153Average$1,294FlexibilityNo cancel feeOn-time72%

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