Our cheapest offers for flights from Denver to San Diego

Here you can compare cheap flights from Denver (DEN) to San Diego (SAN) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to San Diego. Prices and availability may change at any time.

	Outbound	Return	Airlines	Baggage	Price
Best option Denver San Diego	Outbound 03/28/26 direct F94989 02h 39min	Return 04/25/26 direct F94990 02h 41min	Frontier Airlines	?	$43
Denver San Diego	Outbound 03/28/26 direct F94989 02h 39min	Return 04/25/26 direct F94990 02h 41min	Frontier Airlines		$61
Denver San Diego	Outbound 03/28/26 direct F94989 02h 39min	Return 04/25/26 direct F94990 02h 41min	Frontier Airlines	?	$71
Denver San Diego	Outbound 03/28/26 direct F92817 02h 41min	Return 04/25/26 direct F94990 02h 41min	Frontier Airlines		$126
Denver San Diego	Outbound 03/28/26 direct AS1428 02h 38min	Return 04/25/26 direct F94990 02h 41min	Alaska Airlines	?	$160
Denver San Diego	Outbound 05/16/26 direct F92711 02h 36min	Return 05/29/26 1 Stopover (PDX) AS1402, AS0711 06h 28min	Frontier Airlines	?	$172
Denver San Diego	Outbound 07/26/26 direct F92421 02h 29min	Return 08/05/26 direct F94990 02h 49min	Frontier Airlines	?	$180
Denver San Diego	Outbound 07/26/26 direct F92421 02h 29min	Return 08/05/26 direct AS1619 02h 32min	Frontier Airlines	?	$183
Denver San Diego	Outbound 03/28/26 direct AS0220 02h 41min	Return 04/25/26 direct AS1492 02h 25min	Alaska Airlines	?	$202
Denver San Diego	Outbound 07/26/26 direct AS1617 02h 36min	Return 08/05/26 direct AS3012 02h 33min	Alaska Airlines	?	$203

Tips and tricks to help you find cheap flights from Denver to San Diego

Important flight information

Flight information: Denver - San Diego

Roundtrip from	$42.61
Flight duration	min. 02:17 / max. 12:10
Return flight duration	min. 02:10/ max. 06:10
Distance	1373 km
Flights per week	147
Departure airport	Airport Denver International Airport, CO (DEN)
Arrival airport	Airport San Diego - Lindberg Field International, CA (SAN)
Destination country	Flights to United States

Alternative routes to United States

Flight Denver - Las Vegas from $63
Flight Denver - San Francisco from $147
Flight Denver - Miami from $207
Flight Denver - New York from $209
Flight Denver - Los Angeles from $53
Flight Denver - Seattle-Tacoma from $184
Flight Denver - Chicago from $143
Flight Denver - New York from $209
Flight Denver - Tampa from $221
Flight Denver - Dallas from $43

Alternative flights to San Diego

Flight New York - San Diego from $225
Flight Las Vegas - San Diego from $162
Flight San Francisco - San Diego from $155
Flight Austin - San Diego from $166
Flight San Jose - San Diego from $187
Flight New York - San Diego from $225
Flight Chicago - San Diego from $131
Flight Boston - San Diego from $287
Flight Detroit - San Diego from $300
Flight Newark - San Diego from $305

Flights from Denver to San Diego