The cheapest times to fly from HAN to SEA are

  • February 12th to April 22nd (except the week of March 19th)
  • May 7th to May 27th
  • August 27th to December 2nd

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from HAN to SEA is early October. Prices can be as high as $1167 for Saturday flights during early January, or as low as $749 for Tuesday flights around early October.


When to Fly to Seattle

Flying from Hanoi (HAN) to Seattle, WA (SEA) will usually cost between $753 to $1049 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early October with an average ticket price of $751. Due to high demand the most expensive time to fly is early January, with an average price of $1099. Planning your trip to low-cost times can easily save you $348 on economy flights and even more on first-class flights. Generally, any price below $814 can be considered a good price for a round-trip HAN to SEA flight.

See below for a graph of average weekly prices for the HAN to SEA route. All prices are for round-trip tickets in USD.

HAN to SEA Flight Prices

Compared to other flights, the HAN to SEA flight is cheaper than the average and costs about as much as the average flight leaving from Hanoi. The average price per mile (for a direct flight) is $0.07, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $83 (10%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $817. Return trip prices are from the SEA to HAN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from HAN to SEA can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 13 hour 17 minutes may not be realistic.


Flight Questions Answered

Still have questions about flying from HAN to SEA? We’ve got answers.

Which airlines fly this route?

You can find 30 major airlines flying this route most often: Air Canada, Air China, Air France, Alaska, American, ANA, Asiana, Cathay Dragon, Cathay Pacific, China Airlines, China Eastern, China Southern, Delta, Emirates, Etihad, EVA Air, Hainan, Hawaiian, JAL, Korean Air, Lufthansa, Qatar Airways, Shenzhen, Singapore Airlines, SWISS, THAI, United, Vietnam Airlines, WestJet, Xiamen, and potentially more during busy seasons.

How far away is it from Seattle/Tacoma International Airport to Noibai International Airport?

The distance between the two airports is roughly 6830 miles or 10992 kilometers.

How long does it take to fly from HAN to SEA?

The real-world flight time for a nonstop HAN to SEA flight is about 13 hour 17 minutes.

How many flights go between Hanoi and Seattle, WA?

It depends on the day of the week and the date, but a typical day might have around 77 available flights from HAN to SEA.


Airport Location Info


Departing Airport

Origination code HAN
Origination airport name Noibai International Airport
City Hanoi
Country Vietnam
Latitude 21.2
Longitude 105.8

Return Airport

Destination code SEA
Destination airport name Seattle/Tacoma International Airport
City Seattle, WA
Country the United States
Latitude 47.5
Longitude -122.3


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.