Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Seattle to Kathmandu
The cheapest flights right now
Seattle – Kathmandu
Outbound – Dec 8, 2026
1 stop
26h 30m IST
Return – Dec 22, 2026
1 stop
42h 10m IST
$1,220
3 days ago
Seattle – Kathmandu
Outbound – Dec 7, 2026
3 stops
43h 33m Return – Dec 22, 2026
2 stops
33h 20m BKK
ICN
$1,360
3 days ago
Seattle – Kathmandu
Outbound – Dec 7, 2026
3 stops
43h 33m Return – Dec 21, 2026
2 stops
31h 30m BKK
TPE
$1,365
3 days ago
Seattle – Kathmandu
Outbound – Dec 8, 2026
3 stops
27h 30m Return – Dec 22, 2026
3 stops
30h 45m $1,624
3 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$1008
Average price of a round trip
$1010
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
34h6
A flight from Seattle to Kathmandu takes on average 34h6.
Best time
September
According to user searches, the ideal month to go to Kathmandu is September.
Price of flight tickets from Seattle to Kathmandu
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $1008 to $1127
- The average price of a flight ticket is about $1010
- Prices are lowest for stays in the month of October
- The month in which booking a ticket is cheaper is: September
info departure city :
Seattle, USA
airports :
Kenmore Air Harbor Spb. (LKE)
Seattle-Tacoma International Airport (SEA)
Renton Municipal Airport (RNT)
King County International Airport (BFI)
local time :
Seattle is a city in the country USA, the time zone is [[timezone]]. In Seattle, it is currently {fromLocalTime}, the temperature is on average 15°C, with a minimum of 10°C and a maximum of 23°C.
The city of Seattle (SEA) has 4 airport(s): Kenmore Air Harbor Spb., Seattle-Tacoma, Renton and King County
destination info :
Kathmandu, Nepal
airport :
Tribhuvan International Airport (KTM)
local time :
Kathmandu is in the country Nepal, the time zone is [[timezone]]. In Kathmandu, it is currently {toLocalTime}, the temperature is on average 16°C, with a minimum of 11°C and a maximum of 22°C.
The city of Kathmandu has 1 airport(s): Tribhuvan
Useful info about Kathmandu
What is the least touristic period to go to Kathmandu?
If you want to visit Kathmandu during the least touristic period, choose the month of September.
What is the most popular time to travel to Kathmandu?
In Kathmandu, the most popular month is October. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Seattle to Kathmandu?
According to our data, it is recommended to book your flight 8 days before your departure. If you book your flight ticket 2 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight from Seattle to Kathmandu is Friday.
What are the arrival and destination airports when traveling between Seattle and Kathmandu?
When you leave, you can leave from Seattle-Tacoma, and you will arrive at Tribhuvan.
How to reach Seattle airport from the city centre?
The airport Kenmore Air Harbor Spb. is located 3 km, Seattle-Tacoma is located 16 km, Renton is located 16 km or King County is located 8 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from Seattle to Kathmandu?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Seattle and Kathmandu?
In summer, the average temperature is 22°C in Kathmandu and 18°C in Seattle. The average rainfall in summer is 712 mm in Kathmandu and 38 mm in Seattle. In summer, it is warmer in Kathmandu and it rains less in Seattle. In winter, it is colder in Kathmandu and it rains more in Seattle.