Cheap Flights from Denver to San Diego

View €69 flight on Tue, 7 Oct 2025Opens in a new window

Popular airlines from Denver to San Diego

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Cheap flights from Denver to San Diego (DEN-SAN)

Prices were available within the past 7 days and start at €69 for one-way flights and €138 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 25 Oct - Tue, 28 Oct
DEN
Denver
CLD
Carlsbad
€138 Return, found 3 days ago
€138
Return
found 3 days ago
Select American Airlines flight, departing Sat, 25 Oct from Denver to Carlsbad, returning Tue, 28 Oct, priced at €138 found 3 days ago
American Airlines
Sat, 25 Oct - Tue, 28 Oct
DEN
Denver
SAN
San Diego
€138 Return, found 3 days ago
€138
Return
found 3 days ago
Select American Airlines flight, departing Sat, 25 Oct from Denver to San Diego, returning Tue, 28 Oct, priced at €138 found 3 days ago
American Airlines
Sat, 23 Aug - Sun, 24 Aug
DEN
Denver
SAN
San Diego
€143 Return, found 4 days ago
€143
Return
found 4 days ago
Select American Airlines flight, departing Sat, 23 Aug from Denver to San Diego, returning Sun, 24 Aug, priced at €143 found 4 days ago
United
Sat, 25 Oct - Tue, 28 Oct
DEN
Denver
SAN
San Diego
€159 Return, found 3 days ago
€159
Return
found 3 days ago
Select United flight, departing Sat, 25 Oct from Denver to San Diego, returning Tue, 28 Oct, priced at €159 found 3 days ago
Delta
Sat, 25 Oct - Tue, 28 Oct
DEN
Denver
SAN
San Diego
€184 Return, found 3 days ago
€184
Return
found 3 days ago
Select Delta flight, departing Sat, 25 Oct from Denver to San Diego, returning Tue, 28 Oct, priced at €184 found 3 days ago
JetBlue Airways
Mon, 8 Sep - Thu, 11 Sep
DEN
Denver
SAN
San Diego
€423 Return, found 3 days ago
€423
Return
found 3 days ago
Select JetBlue Airways flight, departing Mon, 8 Sep from Denver to San Diego, returning Thu, 11 Sep, priced at €423 found 3 days ago

Find the cheapest month to fly from Denver (DEN) to San Diego (SAN)

September is typically the cheapest month to fly

From €42 - €104 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.