Cheap flights from Seattle to Hanoi
Cheap flight deals from Seattle to Hanoi
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Hanoi (HAN). 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 29 July 2025.
Popular in | June |
|---|---|
Cheapest in | April |
Average price | C$ 1,531 |
Best time to book a flight from Seattle to Hanoi
Have a flexible travel schedule? Discover the best time to fly to Hanoi from Seattle with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Hanoi
How far ahead should I book a flight from Seattle to Hanoi?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Hanoi. Price data was last updated on 25 July 2025.
The price you pay for your flight from Seattle to Hanoi may vary depending on when you book. For the best chance of a lower fare, look to book 67 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Hanoi?
Currently, September is the cheapest month in which you can book a flight from Seattle to Hanoi (average of C$ 1,064). Flying from Seattle to Hanoi in December is currently the most expensive (average of C$ 1,535). 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’s the top layover airport for flights from Seattle to Hanoi?
Share of one-stop round-trip flights from Seattle to Hanoi chosen by Cheapflights users in the past 12 months, using the same layover each way.
Incheon (ICN) – chosen by Cheapflights users on 67% of one-stop itineraries from Seattle to Hanoi on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to Hanoi?
Average round-trip fare for 1-stop flights from Seattle to Hanoi, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Incheon (ICN) is the most affordable 1-stop option, with an average round-trip price of C$ 1,179.
What’s the fastest layover option from Seattle to Hanoi?
Shortest average travel time for 1-stop one-way flights from Seattle to Hanoi, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Taipei City (TPE) have the shortest average one-way travel time for 1-stop routes: 6h 35m.
Which airport typically offers the quickest layover for flights from Seattle to Hanoi?
Average layover duration for 1-stop one-way flights from Seattle to Hanoi, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Taipei City (TPE) offer the fastest connection on this route, with an average layover time of 4h 18m.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Hanoi. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Complete your trip
Complete your trip to Hanoi by adding a car rental and/or hotel reservation to your travel itinerary.
Top 2 airlines flying from Seattle to Hanoi
Discover the top 2 airlines that operate flights from Seattle to Hanoi. 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 629,999 searches. Data last updated 29 July 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Seattle to Hanoi?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Hanoi. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Hanoi?
Cheapflights helps you find that perfect flight to Hanoi from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Seattle to Hanoi with no change fees?
Need flexible booking options for your flight to Hanoi from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Seattle to Hanoi become cheaper?
Not ready to book yet? You can track prices for flights from Seattle to Hanoi on Cheapflights with our Price Alert feature and get notified when better prices are available.