San Diego to Hanoi (SAN → HAN). We are tracking 7 fares on this route.
Cheapest tracked fare $394 · typical price $975 · you save about $581 (60%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
United Airlines
2026-09-22
2 stops
$394
United Airlines
2026-09-07
2 stops
$403
United Airlines
2026-09-08
2 stops
$407
United Airlines
2026-09-09
2 stops
$407
United Airlines
2026-09-06
2 stops
$408
Alaska Airlines
2026-09-05
2 stops
$437
Alaska Airlines
2026-09-15
2 stops
$477
Could you save more?
The airport you were going to fly from is often not the cheapest one. Compare every airport in a region against each other, or check whether a multi-day stopover beats the direct fare.
How cheap can flights from San Diego to Hanoi get?
The cheapest fare we have tracked on this route is $394, compared with a typical $975 for a trip of this distance.
Is it cheaper to fly to Hanoi from a different airport?
Often, yes. Fares out of secondary airports are frequently cheaper than the obvious hub, but they are the ones most likely to be missing from a normal search. Our reverse search compares every airport in a region against each other so the cheaper departure point is not hidden.
Could a stopover make San Diego to Hanoi cheaper?
Sometimes. On thin long-haul routes a two-leg trip with a multi-day stopover can beat the direct fare, and occasionally a direct fare is not sold at all. Our detour search prices those routings against the direct flight.