Cheapest return flights from Denver to San Diego in April from $142

AirHint found the following cheapest return flights from Denver (DEN) to San Diego (SAN) in April 2026 (see full year).

Return flights

09 Apr - 12 Apr Frontier Airlines direct
22 Apr - 26 Apr Alaska Airlines direct
24 Apr - 26 Apr Alaska Airlines direct

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

Powered by

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.

Book a cheap hotel in San Diego

Cheap car rent in San Diego

Feel free to contact us with any feedback or request another flight research.