Boston to San Diego (BOS → SAN). We are tracking 10 fares on this route.
Cheapest tracked fare $129 · typical price $314 · you save about $185 (59%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-09-23
Direct
$129
—
2026-10-28
Direct
$129
—
2026-11-04
Direct
$129
—
2026-12-02
Direct
$129
—
2027-01-06
Direct
$129
—
2027-02-03
Direct
$129
—
2026-10-21
Direct
$129
—
2026-11-11
Direct
$129
Southwest Airlines
2026-12-16
Direct
$132
—
2026-09-30
1 stop
$139
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 Boston to San Diego get?
The cheapest fare we have tracked on this route is $129, compared with a typical $314 for a trip of this distance.
Is it cheaper to fly to San Diego 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 Boston to San Diego 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.