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Kathmandu

$539+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KTM
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Kathmandu Tribhuvan are usually found in April or January, booked 74 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

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 June 12, 2025.

Round-trip from

$931
(Trip.com)

One-way from

$539
(Orbitz)

Popular in

June

Cheapest in

April

Average price

$1,699
From Seattle/Tacoma Intl to Kathmandu Tribhuvan
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One-way flight from Seattle/Tacoma Intl to Kathmandu Tribhuvan
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Highest demand for flights based on searches. 10% potential increase in price ($152 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/10. 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.
Fri 8/2210:15 amSEA - KTM
1 stop22h 45mMultiple Airlines
Sat 9/133:00 pmKTM - SEA
2 stops41h 00mMultiple Airlines
Deal found 6/10$931
This Indian Eagle deal was found by Cheapflights users on 6/10. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/195:15 pmSEA - KTM
1 stop26h 00mEmirates
Wed 1/2112:55 amKTM - SEA
1 stop25h 25mEmirates
Deal found 6/10$1,138
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/912:30 pmSEA - KTM
1 stop29h 00mTurkish Airlines
Mon 9/227:40 amKTM - SEA
1 stop39h 40mTurkish Airlines
Deal found 6/10$1,140
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Thu 11/68:45 amSEA - KTM
1 stop23h 10mSingapore Airlines
Mon 11/1711:05 pmKTM - SEA
1 stop21h 50mSingapore Airlines
Deal found 6/11$1,156
This Gotogate deal was found by Cheapflights users on 6/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:37 amSEA - KTM
2 stops48h 23mCathay Pacific
Wed 10/2911:15 pmKTM - SEA
2 stops32h 07mCathay Pacific
Deal found 6/10$1,384
This oojo deal was found by Cheapflights users on 6/11. 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.
Mon 10/134:30 pmSEA - KTM
1 stop35h 30mQatar Airways
Mon 11/35:40 pmKTM - SEA
1 stop31h 50mQatar Airways
Deal found 6/11$1,531

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 June 12, 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 8/22

10:15 am-9:45 pm

1 stop22h 45m

Kathmandu Tribhuvan

Sat 9/13

3:00 pm-7:15 pm

2 stops41h 00m

$931

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 8/19

5:15 pm-8:00 am

1 stop26h 00m

Kathmandu Tribhuvan

Wed 1/21

12:55 am-12:35 pm

1 stop25h 25m

$1,138

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 9/9

12:30 pm-6:15 am

1 stop29h 00m

Kathmandu Tribhuvan

Mon 9/22

7:40 am-10:35 am

1 stop39h 40m

$1,140

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Thu 11/6

8:45 am-9:40 pm

1 stop23h 10m

Kathmandu Tribhuvan

Mon 11/17

11:05 pm-7:10 am

1 stop21h 50m

$1,156

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Wed 10/1

8:37 am-9:45 pm

2 stops48h 23m

Kathmandu Tribhuvan

Wed 10/29

11:15 pm-6:37 pm

2 stops32h 07m

$1,384

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 10/13

4:30 pm-4:45 pm

1 stop35h 30m

Kathmandu Tribhuvan

Mon 11/3

5:40 pm-11:45 am

1 stop31h 50m

$1,531

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 9/16

3:55 pm-4:30 pm

2 stops35h 50m

$539

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 8/26

10:15 am-9:45 pm

1 stop46h 45m

$624

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Mon 8/25

12:45 am-3:40 pm

2 stops50h 10m

$663

SeattleKathmandu

SEA - KTM

SEAKTM

Seattle/Tacoma Intl

Tue 9/16

7:10 pm-6:15 am

1 stop22h 20m

$744

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 13 results
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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 June 9, 2025.

Booking 74 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, September is the cheapest month in which you can book a flight from Seattle to Kathmandu (average of $1,237). Flying from Seattle to Kathmandu in June is currently the most expensive (average of $1,735). 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 June 12, 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 afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 18% on airfare.

Rainfall in Kathmandu by month

Plan your trip to Kathmandu by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kathmandu ranges from 0.0 - 14.6 inches per month. July is typically the wettest month, when rainfall can reach 14.6 in. November is typically the driest time to visit Kathmandu when rainfall is around 0.0 in.

Temperature in Kathmandu by month

Plan your trip to Kathmandu by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kathmandu, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

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 June 12, 2025.
Emirates
8.1
Very good
3,264 reviews

Comfort

8.0

Food

7.8

Boarding

8.1

Overall

8.1

Crew

8.3

Entertainment

8.2

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
3,264 reviews
Emirates
8.1
Very good
3,264 reviews

Comfort

8.0

Food

7.8

Boarding

8.1

Overall

8.1

Crew

8.3

Entertainment

8.2

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
1,302 reviews
Emirates
8.1
Very good
3,264 reviews

Comfort

8.0

Food

7.8

Boarding

8.1

Overall

8.1

Crew

8.3

Entertainment

8.2

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
892 reviews
Emirates
8.1
Very good
3,264 reviews

Comfort

8.0

Food

7.8

Boarding

8.1

Overall

8.1

Crew

8.3

Entertainment

8.2

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.
China Southern
7.5
Good
99 reviews
Emirates
8.1
Very good
3,264 reviews

Comfort

8.0

Food

7.8

Boarding

8.1

Overall

8.1

Crew

8.3

Entertainment

8.2

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
3,584 reviews
Emirates
8.1
Very good
3,264 reviews

Comfort

8.0

Food

7.8

Boarding

8.1

Overall

8.1

Crew

8.3

Entertainment

8.2

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.

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

    Emirates, at $1,138, was found to be the cheapest airline from Seattle to Kathmandu.Alternate airlines to your destination round-trip include Turkish Airlines and Singapore Airlines. Emirates is 16% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Kathmandu one-way?

    $624 is the cheapest one-way deal found within the past few days, from Singapore Airlines. You may also be able to find cheap deals on Etihad Airways and Turkish Airlines, with prices starting from $663 and $744, respectively.

  • 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. Doha 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 $137 per day.

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

    Museum of Islamic Art, Katara Cultural Village, and Aspire Tower are the most popular attractions in Doha if you're in need of something to do during your layover. Museum of Islamic Art, Katara Cultural Village, and Aspire Tower can be accessed by traveling approximately 5.2 mi, 8.7 mi, and 10.6 mi, respectively from Doha Hamad Intl. Those on a layover in Doha in need of a rental car can book one at Doha Hamad Intl for about $28.

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

    Seattle to Kathmandu flights have a layover in Istanbul 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, September is the cheapest month in which you can book a flight from Seattle to Kathmandu (average of $1,237). Flying from Seattle to Kathmandu in June is currently the most expensive (average of $1,735). 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.

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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
Spokane to Kathmandu flights
Pullman 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$901Average$1,185FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$1,105Average$1,359FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$1,168Average$1,606FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,172Average$1,437FlexibilityNo cancel feeOn-time72%
EmiratesCheapest$1,688Average$2,169FlexibilityNo cancel feeOn-time75%

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