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Good to know
Best time to beat the crowds
expected price decrease
Most popular time to fly
expected price increase
(avg. price over the last 2 weeks)
or less (round trip)
When to book flights from Portland to Hanoi
Estimated round-trip price
Average price per month
Flight prices as travel date approaches
Top tips for finding a cheap flight
Looking for a cheap flight? 25% of our users found flights on this route for $821 or less.
The cheapest flight from Portland to Hanoi was found 19 days before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
High season is considered to be May, June and July. The cheapest month to fly is April.
FAQs for booking Portland to Hanoi flights
Are flight prices cheaper from Portland to Hanoi because of Coronavirus (COVID-19)?
Currently, KAYAK has observed decreased prices for several flights because of COVID-19. Unnecessary travel is not recommended at this time, and flights may be at risk of cancellation: please refer to local authorities in both Portland and Hanoi for any travel warnings, and please check the airline's cancellation policy and travel advisories before booking your trip. For more advice, please view our information page on what to know about coronavirus (COVID-19) and travel.
How does KAYAK’s flight Price Forecast tool help me choose the right time to buy?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a given destination and date is likely to change within 7 days, so travelers know whether to wait or book now.