AirHint found the following cheapest return flights from St. Louis (STL) to Cancun (CUN)
in May 2025 (see full year ).
Return flights
31 May
- 06 Jun
Spirit Airlines
$ 346
26 May
- 11 Jun
Southern Airways Express
$ 412
15 May
- 19 May
Frontier Airlines
$ 425
01 May
- 06 May
Air Canada
$ 441
28 May
- 11 Jun
Southern Airways Express
$ 441
01 May
- 08 May
Air Canada
$ 442
22 May
- 26 May
Spirit Airlines
$ 451
26 May
- 09 Jun
Southern Airways Express
$ 453
30 May
- 03 Jun
Frontier Airlines
$ 454
30 May
- 01 Jun
Frontier Airlines
$ 467
15 May
- 19 May
Frontier Airlines
$ 513
direct
26 May
- 11 Jun
Frontier Airlines
$ 805
direct
26 May
- 09 Jun
Frontier Airlines
$ 805
direct
30 May
- 01 Jun
Frontier Airlines
$ 972
direct
Also check the deals for one-way flights from St. Louis to Cancun in May .
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers.
Only the cheapest flights are offered.
Select a price to book and secure these cheap prices.
