Cheap Flights from Denver to San Diego

View €69 flight on Wed, 3 Sep 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 €144 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 3 Sep - Mon, 8 Sep
DEN
Denver
SAN
San Diego
€144 Return, found 5 days ago
€144
Return
found 5 days ago
Select American Airlines flight, departing Wed, 3 Sep from Denver to San Diego, returning Mon, 8 Sep, priced at €144 found 5 days ago
United
Wed, 3 Sep - Mon, 8 Sep
DEN
Denver
SAN
San Diego
€166 Return, found 5 days ago
€166
Return
found 5 days ago
Select United flight, departing Wed, 3 Sep from Denver to San Diego, returning Mon, 8 Sep, priced at €166 found 5 days ago
American Airlines
Wed, 3 Sep - Mon, 8 Sep
DEN
Denver
SAN
San Diego
€167 Return, found 5 days ago
€167
Return
found 5 days ago
Select American Airlines flight, departing Wed, 3 Sep from Denver to San Diego, returning Mon, 8 Sep, priced at €167 found 5 days ago
American Airlines
Sat, 6 Sep - Mon, 8 Sep
DEN
Denver
SAN
San Diego
€170 Return, found 6 days ago
€170
Return
found 6 days ago
Select American Airlines flight, departing Sat, 6 Sep from Denver to San Diego, returning Mon, 8 Sep, priced at €170 found 6 days ago
Delta
Wed, 3 Sep - Mon, 8 Sep
DEN
Denver
SAN
San Diego
€187 Return, found 5 days ago
€187
Return
found 5 days ago
Select Delta flight, departing Wed, 3 Sep from Denver to San Diego, returning Mon, 8 Sep, priced at €187 found 5 days ago
JetBlue Airways
Thu, 4 Sep - Mon, 8 Sep
DEN
Denver
SAN
San Diego
€495 Return, found 1 day ago
€495
Return
found 1 day ago
Select JetBlue Airways flight, departing Thu, 4 Sep from Denver to San Diego, returning Mon, 8 Sep, priced at €495 found 1 day ago

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

September is typically the cheapest month to fly

From €47 - €110 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.