AirHint found the following cheapest return flights from Denver (DEN) to San Juan (SJU)
in May 2025 (see full year ).
Return flights
23 May
- 25 May
Frontier Airlines
$ 298
23 May
- 27 May
Frontier Airlines
$ 298
21 May
- 28 May
Frontier Airlines
$ 298
26 May
- 06 Jun
Frontier Airlines
$ 298
17 May
- 04 Jun
Frontier Airlines
$ 298
30 May
- 02 Jun
Frontier Airlines
$ 298
22 May
- 24 May
Frontier Airlines
$ 300
29 May
- 04 Jun
Frontier Airlines
$ 304
23 May
- 30 May
Frontier Airlines
$ 306
17 May
- 24 May
Frontier Airlines
$ 306
23 May
- 26 May
Frontier Airlines
$ 308
29 May
- 05 Jun
Frontier Airlines
$ 308
15 May
- 19 May
Frontier Airlines
$ 317
30 May
- 13 Jun
Frontier Airlines
$ 330
14 May
- 21 May
Frontier Airlines
$ 338
10 May
- 12 May
Frontier Airlines
$ 378
30 May
- 13 Jun
United
$ 606
direct
31 May
- 14 Jun
United
$ 634
27 May
- 10 Jun
United
$ 645
direct
28 May
- 11 Jun
United
$ 645
direct
Also check the deals for one-way flights from Denver to San Juan 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.
