Cheap flights from Seoul to Hanoi
from 64 US$
From 140 USD — compare hundreds of airlines
The cheapest month is usually 2026-09 · 64 US$
See prices for my dates →Live fares from 100+ sites — free, with no hidden fees.
About this route
Compare flights from Seoul to Hanoi, a about 2,729 km route (around 3h 55m nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as Korean Air, Asiana Airlines, Vietnam Airlines operate this route.
When to buy and when to fly
Prices by date
Fares found by date — cheapest days in green.
How to get the best price
Airlines on this route
FAQ
What's the cheapest month to fly Seoul to Hanoi?
It's usually 2026-09, from 64 USD. Use the price calendar to compare other dates.
How long is the flight from Seoul to Hanoi?
A nonstop flight takes about 3h 55m and covers around 2,729 km. Connecting itineraries take longer.
Are there direct flights from Seoul to Hanoi?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from Seoul to Hanoi?
Korean Air, Asiana Airlines, Vietnam Airlines operate this route, among others. Compare them all in the results.
When should I book Seoul–Hanoi flights?
As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.
Compare your dates in seconds
Seoul → Hanoi · Live fares from 100+ sites — free, with no hidden fees.