Cheap Flights from Denver to San Diego
Browse current best options from Denver. Become a member to unlock all deals and get alerts when new deals appear.
Deals from
Denver
RatePunk searches hundreds of travel sites at once for deals on flights to San Diego
Prices updated 24 days ago
486,190 searches this week
171 airlines compared
80%+ AI score for best value
Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)
Today’s best flight deals from Denver to San Diego
Explore current cheapest deals departing from Denver to San Diego
Round trip
Sort by: Cheapest
September 26 - October 3
DEN - San Diego
$146
$83
Round trip
September 29 - October 3
DEN - San Diego
$154
$84
Round trip
August 11 - August 18
DEN - San Diego
$139
$85
Round trip
August 11 - August 22
DEN - San Diego
$124
$86
Round trip
September 21 - October 3
DEN - San Diego
$128
$86
Round trip
September 22 - October 3
DEN - San Diego
$130
$86
Round trip
September 26 - September 29
DEN - San Diego
$150
$86
Round trip
September 26 - October 10
DEN - San Diego
$131
$86
Round trip
September 26 - October 13
DEN - San Diego
$128
$86
Round trip
September 26 - September 30
DEN - San Diego
$150
$86
Round trip
Unlock all 500+ flight deals to San Diego and get alerts when great deals appear
Route Intelligence — 486,190 Searches this Week
Insights for flights from Denver to San Diego
How much is a round trip from Denver to San Diego
Regular price: $110 - $234
Prices are currently below the regular range.
The regular price for flights from Denver to San Diego typically ranges from $110 to $234. The current lowest deal is $83 with Frontier Airlines, for travel from September 26 to October 3.
now $83
Low $110
High $234
The cheapest time to fly from Denver to San Diego
The cheapest month to fly from Denver to San Diego is April, with a median price of $56. The most expensive month is January, with a median price of $294. Prices are generally lower from April to December.
April
Flights from $56
January
Flights from $294
Direct flights from Denver to San Diego
Frontier Airlines
Last-minute flights going from Denver to San Diego
Thu, Jul 16
DEN - San Diego
Denver (DEN) - San Diego (SAN)
Frontier Airlines
$231
$171
One-way
Sat, Jul 18
DEN - San Diego
Denver (DEN) - San Diego (SAN)
Frontier Airlines
$230
$182
One-way
Tue, Jul 21
DEN - San Diego
Denver (DEN) - San Diego (SAN)
Frontier Airlines
$216
$166
One-way
Wed, Jul 22
DEN - San Diego
Denver (DEN) - San Diego (SAN)
Frontier Airlines
$220
$165
One-way
Fri, Jul 24
DEN - San Diego
Denver (DEN) - San Diego (SAN)
Frontier Airlines
$225
$170
One-way
Tue, Aug 4
DEN - San Diego
Denver (DEN) - San Diego (SAN)
Frontier Airlines
$138
$99
One-way
Biggest price drops on these dates for flights from Denver to San Diego
Aug 5 - Aug 11
$241 → $111
54%
Aug 5 - Aug 10
$249 → $141
43%
Aug 7 - Aug 11
$258 → $150
42%
Aug 6 - Aug 11
$250 → $144
42%
Popular Airports to fly from Denver to San Diego
Denver - San Diego route insights
💸 Price insights
Recent fares are above the typical level.
Recent DEN to SAN fares are above the typical level, with 37% of recent deals considered good.
📅 Best time to fly
Fly in April or May for the cheapest fares.
Historically, April and May offer the lowest median prices at $56 for flights from Denver to San Diego.
⏱️ Flight duration
Direct flights take 4h 57m.
The typical direct flight from Denver to San Diego takes 4 hours and 57 minutes.
✈️ Airlines & availability
Direct flights are frequent.
Direct flights are dominant on this route, with deals appearing frequently over the last 30 days.
🏆 Airline highlight
Frontier Airlines offers direct flights.
Frontier Airlines provides direct flights from Denver to San Diego, with recent deals found via kiwi.
🎯 Booking tip
Consider booking during April or May.
Booking during April or May could secure a median price of $56, based on historical data.
Denver main airports to depart from
Denver International (DEN)
Denver International Airport is a great option for flights from Denver to San Diego.
📍 ~40 km from Denver city center (reachable by car or train)
💸 Flights from ~$83
San Diego main airports to arrive at
San Diego International (SAN)
San Diego International Airport is a convenient arrival choice for flights from Denver to San Diego.
📍 ~5 km from San Diego city center (reachable by car)
💸 Flights from ~$83
McClellan–Palomar (CLD)
McClellan–Palomar Airport offers an alternative arrival option for flights from Denver to San Diego.
📍 ~40 km from San Diego city center (reachable by car)
💸 Flights from ~$269
Airports nearby San Diego used as alternative
Tijuana International (TIJ)
Tijuana International (TIJ) is an excellent alternative for flights to Mexico, with direct access via the Cross Border Xpress (CBX) terminal.
📍 ~25 km from San Diego (reachable by car)
💸 Flights from ~$339
John Wayne (SNA)
John Wayne (SNA) is a convenient US domestic alternative, often less congested than larger hubs.
📍 ~135 km from San Diego (reachable by car)
💸 Flights from ~$98
Los Angeles International (LAX)
Los Angeles International (LAX) offers the most extensive international and domestic route options.
📍 ~185 km from San Diego (reachable by car)
💸 Flights from ~$61
Ontario International (ONT)
Ontario International (ONT) is a reliable domestic alternative with growing service, often less congested than LAX or SNA.
📍 ~170 km from San Diego (reachable by car)
💸 Flights from ~$73
Long Beach (LGB)
Long Beach (LGB) is easy to navigate with fast security, a good alternative for specific West Coast routes.
📍 ~155 km from San Diego (reachable by car)
💸 Flights from ~$178
Business & First Class Flight Deals to San Diego
Discover luxury on the budget with premium cabin class on flights from Denver to San Diego.
Elite
Best Elite deals to San Diego
Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.
From DEN
Elite
Aug 25
San Diego, United States
80% AI deal score
$704
$437
Save $267
From DEN
Elite
Aug 29
San Diego, United States
80% AI deal score
$705
$437
Save $268
From DEN
Elite
Aug 22
San Diego, United States
80% AI deal score
$711
$437
Save $274
From DEN
Elite
Aug 29
San Diego, United States
79% AI deal score
$698
$437
Save $261
From DEN
Elite
Aug 22
San Diego, United States
78% AI deal score
$633
$437
Save $196
From DEN
Elite
Aug 22
San Diego, United States
78% AI deal score
$633
$437
Save $196
From DEN
Elite
Aug 26
San Diego, United States
78% AI deal score
$634
$437
Save $197
From DEN
Elite
Aug 19
San Diego, United States
78% AI deal score
$635
$437
Save $198
From DEN
Elite
Aug 22
San Diego, United States
78% AI deal score
$856
$515
Save $341
From DEN
Elite
Aug 26
San Diego, United States
77% AI deal score
$660
$437
Save $223
From DEN
Elite
Aug 25
San Diego, United States
77% AI deal score
$659
$437
Save $222
From DEN
Elite
Aug 25
San Diego, United States
77% AI deal score
$654
$438
Save $216
From DEN
Elite
Aug 19
San Diego, United States
77% AI deal score
$649
$438
Save $211
From DEN
Elite
Aug 19
San Diego, United States
77% AI deal score
$660
$438
Save $222
From DEN
Elite
Aug 19
San Diego, United States
77% AI deal score
$642
$438
Save $204
From DEN
Elite
Aug 22
San Diego, United States
77% AI deal score
$619
$437
Save $182
From DEN
Elite
Aug 19
San Diego, United States
77% AI deal score
$621
$437
Save $184
From DEN
Elite
Aug 25
San Diego, United States
77% AI deal score
$804
$505
Save $299
From DEN
Elite
Sep 05
San Diego, United States
77% AI deal score
$775
$505
Save $270
From DEN
Elite
Oct 27
San Diego, United States
77% AI deal score
$762
$515
Save $247
From DEN
Elite
Sep 02
San Diego, United States
77% AI deal score
$783
$515
Save $268
From DEN
Elite
Sep 15
San Diego, United States
77% AI deal score
$795
$515
Save $280
From DEN
Elite
Oct 03
San Diego, United States
77% AI deal score
$792
$515
Save $277
From DEN
Elite
Sep 22
San Diego, United States
77% AI deal score
$783
$515
Save $268
From DEN
Elite
Sep 09
San Diego, United States
77% AI deal score
$793
$515
Save $278
From DEN
Elite
Aug 21
San Diego, United States
77% AI deal score
$844
$525
Save $319
From DEN
Elite
Aug 31
San Diego, United States
77% AI deal score
$826
$525
Save $301
From DEN
Elite
Aug 25
San Diego, United States
76% AI deal score
$641
$438
Save $203
From DEN
Elite
Sep 01
San Diego, United States
76% AI deal score
$648
$438
Save $210
From DEN
Elite
Aug 25
San Diego, United States
76% AI deal score
$629
$438
Save $191
From DEN
Elite
Aug 19
San Diego, United States
76% AI deal score
$630
$438
Save $192
From DEN
Elite
Sep 29
San Diego, United States
76% AI deal score
$607
$437
Save $170
From DEN
Elite
Aug 22
San Diego, United States
76% AI deal score
$589
$437
Save $152
From DEN
Elite
Aug 25
San Diego, United States
76% AI deal score
$583
$437
Save $146
From DEN
Elite
Aug 22
San Diego, United States
76% AI deal score
$584
$437
Save $147
From DEN
Elite
Sep 19
San Diego, United States
76% AI deal score
$589
$437
Save $152
From DEN
Elite
Aug 26
San Diego, United States
76% AI deal score
$589
$437
Save $152
From DEN
Elite
Sep 19
San Diego, United States
76% AI deal score
$588
$437
Save $151
From DEN
Elite
Aug 29
San Diego, United States
76% AI deal score
$584
$437
Save $147
From DEN
Elite
Sep 05
San Diego, United States
76% AI deal score
$583
$437
Save $146
From DEN
Elite
Aug 25
San Diego, United States
76% AI deal score
$583
$437
Save $146
From DEN
Elite
Aug 22
San Diego, United States
76% AI deal score
$584
$437
Save $147
From DEN
Elite
Sep 26
San Diego, United States
76% AI deal score
$603
$437
Save $166
From DEN
Elite
Aug 26
San Diego, United States
76% AI deal score
$583
$437
Save $146
From DEN
Elite
Aug 29
San Diego, United States
76% AI deal score
$583
$437
Save $146
From DEN
Elite
Aug 25
San Diego, United States
76% AI deal score
$589
$437
Save $152
From DEN
Elite
Aug 26
San Diego, United States
76% AI deal score
$590
$437
Save $153
From DEN
Elite
Aug 19
San Diego, United States
76% AI deal score
$586
$437
Save $149
From DEN
Elite
Aug 22
San Diego, United States
76% AI deal score
$590
$437
Save $153
From DEN
Elite
Sep 26
San Diego, United States
76% AI deal score
$603
$437
Save $166
From DEN
Elite
Aug 29
San Diego, United States
76% AI deal score
$577
$437
Save $140
From DEN
Elite
Aug 26
San Diego, United States
76% AI deal score
$583
$437
Save $146
From DEN
Elite
Sep 23
San Diego, United States
76% AI deal score
$772
$515
Save $257
From DEN
Elite
Sep 02
San Diego, United States
76% AI deal score
$762
$515
Save $247
From DEN
Elite
Sep 28
San Diego, United States
76% AI deal score
$785
$525
Save $260
From DEN
Elite
Sep 18
San Diego, United States
76% AI deal score
$783
$525
Save $258
From DEN
Elite
Sep 18
San Diego, United States
76% AI deal score
$792
$525
Save $267
From DEN
Elite
Sep 24
San Diego, United States
76% AI deal score
$772
$525
Save $247
From DEN
Elite
Aug 12
San Diego, United States
76% AI deal score
$804
$535
Save $269
From DEN
Elite
Sep 23
San Diego, United States
75% AI deal score
$562
$437
Save $125
From DEN
Elite
Sep 01
San Diego, United States
71% AI deal score
$602
$438
Save $164
From DEN
Elite
Oct 06
San Diego, United States
71% AI deal score
$585
$438
Save $147
From DEN
Elite
Sep 08
San Diego, United States
71% AI deal score
$605
$438
Save $167
From DEN
Elite
Sep 08
San Diego, United States
71% AI deal score
$592
$438
Save $154
From DEN
Elite
Sep 15
San Diego, United States
71% AI deal score
$550
$437
Save $113
From DEN
Elite
Sep 19
San Diego, United States
71% AI deal score
$549
$437
Save $112
From DEN
Elite
Sep 22
San Diego, United States
71% AI deal score
$552
$437
Save $115
From DEN
Elite
Sep 09
San Diego, United States
71% AI deal score
$543
$437
Save $106
From DEN
Elite
Sep 05
San Diego, United States
71% AI deal score
$542
$437
Save $105
From DEN
Elite
Sep 01
San Diego, United States
70% AI deal score
$580
$438
Save $142
From DEN
Elite
Sep 01
San Diego, United States
70% AI deal score
$572
$438
Save $134
From DEN
Elite
Sep 02
San Diego, United States
70% AI deal score
$529
$437
Save $92
From DEN
Elite
Sep 16
San Diego, United States
70% AI deal score
$533
$437
Save $96
From DEN
Elite
Sep 05
San Diego, United States
70% AI deal score
$540
$437
Save $103
From DEN
Elite
Sep 01
San Diego, United States
70% AI deal score
$540
$437
Save $103
From DEN
Elite
Sep 09
San Diego, United States
70% AI deal score
$530
$437
Save $93
From DEN
Elite
Sep 02
San Diego, United States
70% AI deal score
$527
$437
Save $90
From DEN
Elite
Nov 03
San Diego, United States
70% AI deal score
$597
$477
Save $120
From DEN
Elite
Sep 15
San Diego, United States
69% AI deal score
$518
$437
Save $81
From DEN
Elite
Oct 27
San Diego, United States
69% AI deal score
$589
$477
Save $112
From DEN
Elite
Oct 24
San Diego, United States
69% AI deal score
$589
$477
Save $112
From DEN
Elite
Oct 30
San Diego, United States
69% AI deal score
$765
$605
Save $160
From DEN
Elite
Sep 01
San Diego, United States
68% AI deal score
$488
$437
Save $51
From DEN
Elite
Sep 02
San Diego, United States
68% AI deal score
$487
$437
Save $50
From DEN
Elite
Sep 05
San Diego, United States
68% AI deal score
$488
$437
Save $51
From DEN
Elite
Sep 01
San Diego, United States
68% AI deal score
$493
$437
Save $56
From DEN
Elite
Sep 09
San Diego, United States
68% AI deal score
$496
$437
Save $59
From DEN
Elite
Sep 02
San Diego, United States
68% AI deal score
$487
$437
Save $50
From DEN
Elite
Sep 05
San Diego, United States
68% AI deal score
$494
$437
Save $57
From DEN
Elite
Sep 01
San Diego, United States
68% AI deal score
$488
$437
Save $51
From DEN
Elite
Sep 08
San Diego, United States
68% AI deal score
$495
$437
Save $58
From DEN
Elite
Sep 08
San Diego, United States
68% AI deal score
$493
$437
Save $56
From DEN
Elite
Sep 09
San Diego, United States
68% AI deal score
$495
$437
Save $58
From DEN
Elite
Sep 05
San Diego, United States
68% AI deal score
$493
$437
Save $56
From DEN
Elite
Sep 01
San Diego, United States
68% AI deal score
$488
$437
Save $51
From DEN
Elite
Nov 08
San Diego, United States
68% AI deal score
$582
$497
Save $85
From DEN
Elite
Nov 10
San Diego, United States
68% AI deal score
$597
$517
Save $80
From DEN
Elite
Nov 07
San Diego, United States
68% AI deal score
$693
$595
Save $98
From DEN
Elite
Nov 13
San Diego, United States
67% AI deal score
$597
$532
Save $65
From DEN
Elite
Nov 24
San Diego, United States
66% AI deal score
$595
$552
Save $43