Cheap flights from Ontario CA to Bangkok Suvarnabhumi
Ontario CA to Bangkok Suvarnabhumi (ONT → BKK). We are tracking 12 fares on this route.
Cheapest tracked fare $414 · typical price $1,029 · you save about $615 (60%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
JX
2026-11-09
1 stop
$414
JX
2026-10-23
1 stop
$426
Korean Air
2027-01-05
2 stops
$429
Korean Air
2026-11-29
2 stops
$439
JX
2026-11-30
1 stop
$441
Korean Air
2027-01-06
2 stops
$442
Korean Air
2026-12-27
2 stops
$470
Korean Air
2027-01-01
2 stops
$477
Korean Air
2027-01-03
2 stops
$477
Korean Air
2027-01-02
2 stops
$492
China Airlines
2027-01-07
1 stop
$492
Korean Air
2026-12-23
2 stops
$687
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 Ontario CA to Bangkok Suvarnabhumi get?
The cheapest fare we have tracked on this route is $414, compared with a typical $1,029 for a trip of this distance.
Is it cheaper to fly to Bangkok Suvarnabhumi 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 Ontario CA to Bangkok Suvarnabhumi 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.