Phoenix to St Louis (PHX → STL). We are tracking 16 fares on this route.
Cheapest tracked fare $83 · typical price $191 · you save about $108 (57%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-10-28
1 stop
$83
—
2026-11-11
1 stop
$83
—
2026-12-02
1 stop
$83
Frontier
2026-11-04
1 stop
$83
Frontier
2026-10-31
1 stop
$88
—
2027-02-05
1 stop
$88
—
2027-03-02
1 stop
$88
—
2027-01-05
1 stop
$88
—
2027-01-26
1 stop
$88
—
2027-02-02
1 stop
$98
—
2027-01-28
1 stop
$111
—
2026-10-21
1 stop
$120
—
2026-11-05
1 stop
$120
—
2026-12-01
1 stop
$125
—
2026-11-10
1 stop
$130
—
2026-10-27
1 stop
$133
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 Phoenix to St Louis get?
The cheapest fare we have tracked on this route is $83, compared with a typical $191 for a trip of this distance.
Is it cheaper to fly to St Louis 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 Phoenix to St Louis 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.