Flights to San Diego from Boulder - ￥11,650

View ￥11,650 flight on Tue, Oct 7, 2025Opens in a new window

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Cheap Flights from Boulder to San Diego (DEN-SAN)

Prices were available within the past 7 days and start at ￥11,650 for one-way flights and ￥24,580 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Aug 27 - Mon, Sep 1
DEN
Denver
CLD
Carlsbad
￥24,580 Roundtrip, found 6 days ago
￥24,580
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Aug 27 from Denver to Carlsbad, returning Mon, Sep 1, priced at ￥24,580 found 6 days ago
American Airlines
Sat, Aug 23 - Sun, Aug 24
DEN
Denver
SAN
San Diego
￥24,880 Roundtrip, found 4 days ago
￥24,880
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Aug 23 from Denver to San Diego, returning Sun, Aug 24, priced at ￥24,880 found 4 days ago
American Airlines
Wed, Aug 27 - Mon, Sep 1
DEN
Denver
SAN
San Diego
￥28,990 Roundtrip, found 6 days ago
￥28,990
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Aug 27 from Denver to San Diego, returning Mon, Sep 1, priced at ￥28,990 found 6 days ago
American Airlines
Sat, Aug 16 - Mon, Aug 18
DEN
Denver
SAN
San Diego
￥31,890 Roundtrip, found 6 days ago
￥31,890
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 16 from Denver to San Diego, returning Mon, Aug 18, priced at ￥31,890 found 6 days ago
Delta
Sat, Aug 16 - Mon, Aug 18
DEN
Denver
SAN
San Diego
￥31,900 Roundtrip, found 6 days ago
￥31,900
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Aug 16 from Denver to San Diego, returning Mon, Aug 18, priced at ￥31,900 found 6 days ago
United
Sat, Aug 30 - Mon, Sep 1
DEN
Denver
SAN
San Diego
￥33,380 Roundtrip, found 1 day ago
￥33,380
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 30 from Denver to San Diego, returning Mon, Sep 1, priced at ￥33,380 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 ￥7,118 - ￥17,810 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.