Roundtrip Denver to San Diego Nonstop Flights

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These nonstop flights from Denver (DEN) to San Diego (SAN) are available on Alaska Airlines, Southwest, and United Airlines. Travel is available for departures from DEN on various dates in March, April, and May, including March 11, 17-18, 24-25, 28, 31; April 1, 4, 7-8, 11, 14-15, 18, 21-22, 25, 28-29; May 2, 5-6, 9, 12-13, 16, 19-20. Departures from SAN are also available on various dates in March, April, and May, including March 11, 14, 17-18, 24-25, 31; April 1, 4, 7-8, 11, 14-15, 18, 21-22, 25, 28-29; 2, 5-6, 9, 12-13, 16, 19-20.

These are basic economy fares. With Alaska Airlines and Southwest, a personal item and a carry-on bag are permitted. United Airlines only allows a personal item. Seat selection is not included, and these tickets are non-changeable. If traveling with children on Alaska Airlines, you will be seated together according to their policy.