Cheapest return flights from Denver to San Diego in May from $116

Best time to book flights for Denver (DEN) to San Diego (SAN) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to San Diego (SAN) in May 2025 (see full year).

Return flights

28 May - 31 May Frontier Airlines direct
22 May - 25 May Frontier Airlines direct
20 May - 28 May Frontier Airlines direct
31 May - 02 Jun Frontier Airlines direct
16 May - 19 May Frontier Airlines direct
28 May - 01 Jun Frontier Airlines direct
19 May - 07 Jun Frontier Airlines
28 May - 02 Jun Frontier Airlines
11 May - 17 May Frontier Airlines
28 May - 02 Jun Frontier Airlines direct
14 May - 21 May Frontier Airlines
20 May - 06 Jun Frontier Airlines
20 May - 08 Jun Frontier Airlines direct
16 May - 17 May Frontier Airlines direct
19 May - 01 Jun Frontier Airlines
19 May - 08 Jun Frontier Airlines
19 May - 07 Jun Frontier Airlines direct
11 May - 12 May Frontier Airlines
23 May - 27 May Frontier Airlines direct
11 May - 16 May Frontier Airlines

Also check the deals for one-way flights from Denver to San Diego in May.

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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.

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