Cheap Flights from San Diego to Denver
Browse current best options from San Diego. Become a member to unlock all deals and get alerts when new deals appear.
Deals from
San Diego
RatePunk searches hundreds of travel sites at once for deals on flights to Denver
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 San Diego to Denver
Explore current cheapest deals departing from San Diego to Denver
Round trip
Sort by: Cheapest
October 3 - October 20
SAN - Denver
$109
$82
Round trip
October 3 - October 27
SAN - Denver
$107
$82
Round trip
September 17 - September 26
SAN - Denver
$104
$83
Round trip
November 4 - November 11
SAN - Denver
$135
$84
Round trip
October 27 - November 11
SAN - Denver
$120
$84
Round trip
October 27 - November 17
SAN - Denver
$119
$84
Round trip
October 28 - November 4
SAN - Denver
$136
$84
Round trip
October 28 - November 11
SAN - Denver
$123
$84
Round trip
September 9 - September 26
SAN - Denver
$92
$84
Round trip
October 28 - November 10
SAN - Denver
$123
$84
Round trip
Unlock all 500+ flight deals to Denver and get alerts when great deals appear
Route Intelligence — 486,190 Searches this Week
Insights for flights from San Diego to Denver
How much is a round trip from San Diego to Denver
Regular price: $87 - $228
Prices for flights from San Diego to Denver are currently below the regular range.
Regular prices for flights from San Diego to Denver typically range from $87 to $228. The current lowest deal is $82. This deal is with Frontier Airlines for travel from October 3 to October 20.
now $82
Low $87
High $228
The cheapest time to fly from San Diego to Denver
The cheapest month to fly from San Diego to Denver is September, with a median price of $74. The most expensive month is March, with a median price of $460. Prices are generally lower from February to November.
September
Flights from $74
March
Flights from $460
Direct flights from San Diego to Denver
Frontier Airlines
Last-minute flights going from San Diego to Denver
Sat, Aug 29
SAN - Denver
San Diego (SAN) - Denver (DEN)
Frontier Airlines
$105
$86
One-way
Wed, Sep 9
SAN - Denver
San Diego (SAN) - Denver (DEN)
Frontier Airlines
$92
$84
One-way
Thu, Sep 17
SAN - Denver
San Diego (SAN) - Denver (DEN)
Frontier Airlines
$104
$83
One-way
Thu, Sep 17
SAN - Denver
San Diego (SAN) - Denver (DEN)
Frontier Airlines
$111
$86
One-way
Sat, Oct 3
SAN - Denver
San Diego (SAN) - Denver (DEN)
Frontier Airlines
$109
$82
One-way
Sat, Oct 3
SAN - Denver
San Diego (SAN) - Denver (DEN)
Frontier Airlines
$107
$82
One-way
Biggest price drops on these dates for flights from San Diego to Denver
Nov 3 - Nov 4
$138 → $84
39%
Oct 28 - Nov 4
$136 → $84
38%
Oct 28 - Nov 3
$136 → $84
38%
Nov 4 - Nov 11
$135 → $84
38%
Popular Airports to fly from San Diego to Denver
San Diego - Denver route insights
💸 Price insights
Recent fares are below the typical level
Recent fares from San Diego to Denver are below the typical level, with deals around $82.
📅 Best time to fly
September is historically cheapest at $74
Historically, September is the cheapest month to fly from San Diego to Denver, with a median price of $74.
⏱️ Flight duration
Direct flights average 4h 58m
The typical flight duration for this route is 4 hours and 58 minutes.
✈️ Airlines & availability
Frequent deals are available
Deals for flights from San Diego to Denver are frequent, with over 1 deal per day.
🏆 Airline highlight
Frontier Airlines offers direct flights
Frontier Airlines is one of the airlines that offers direct flights on this route.
🎯 Booking tip
Good prices are uncommon
Historically, only 7% of deals from San Diego to Denver are considered good prices.
San Diego main airports to depart from
San Diego International (SAN)
San Diego International Airport offers the cheapest flights from San Diego to Denver.
📍 ~5 km from San Diego city center (reachable by car).
💸 Flights from ~$82
McClellan–Palomar (CLD)
McClellan–Palomar Airport is an alternative option for flights from San Diego to Denver.
📍 ~45 km from San Diego city center (reachable by car).
💸 Flights from ~$342
Denver main airports to arrive at
Denver International (DEN)
Denver International Airport is a primary gateway for travelers flying from San Diego to Denver.
📍 ~37 km from city center (reachable by car, bus, or rail).
💸 Flights from ~$82
Airports nearby Denver used as alternative
Colorado Springs (COS)
Colorado Springs (COS) is a practical alternative to Denver (DEN) due to its proximity and service level.
📍 ~100 km from Denver (approximately 1.5 hours drive depending on I-25 traffic)
💸 Flights from ~$197
Eagle County Regional (EGE)
Eagle County Regional (EGE) is a primary alternative for travelers located in the western mountains.
📍 ~160 km from Denver (reachable by car)
💸 Flights from ~$439
Aspen–Pitkin County (ASE)
Aspen–Pitkin County (ASE) offers a full range of cabin classes, including First Class.
📍 ~200 km from Denver (reachable by car)
💸 Flights from ~$329
Cheyenne Regional (CYS)
Cheyenne Regional (CYS) is geographically close to the northern Denver metro area, with easy parking.
📍 ~150 km from Denver (reachable by car)
💸 Flights from ~$286
Yampa Valley (HDN)
Yampa Valley (HDN) serves as a viable gateway for the Northwest Colorado region.
📍 ~200 km from Denver (reachable by car)
💸 Flights from ~$268
Business & First Class Flight Deals to Denver
Discover luxury on the budget with premium cabin class on flights from San Diego to Denver.
Elite
Best Elite deals to Denver
Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.
From SAN
Elite
Sep 26
Denver, United States
81% AI deal score
$695
$437
Save $258
From SAN
Elite
Aug 25
Denver, United States
81% AI deal score
$680
$437
Save $243
From SAN
Elite
Sep 30
Denver, United States
80% AI deal score
$639
$437
Save $202
From SAN
Elite
Sep 16
Denver, United States
80% AI deal score
$675
$437
Save $238
From SAN
Elite
Sep 15
Denver, United States
80% AI deal score
$674
$437
Save $237
From SAN
Elite
Aug 29
Denver, United States
79% AI deal score
$710
$437
Save $273
From SAN
Elite
Sep 15
Denver, United States
79% AI deal score
$741
$437
Save $304
From SAN
Elite
Sep 02
Denver, United States
79% AI deal score
$732
$437
Save $295
From SAN
Elite
Sep 08
Denver, United States
79% AI deal score
$752
$437
Save $315
From SAN
Elite
Sep 05
Denver, United States
79% AI deal score
$730
$438
Save $292
From SAN
Elite
Sep 23
Denver, United States
79% AI deal score
$623
$437
Save $186
From SAN
Elite
Sep 29
Denver, United States
79% AI deal score
$637
$437
Save $200
From SAN
Elite
Sep 23
Denver, United States
79% AI deal score
$621
$437
Save $184
From SAN
Elite
Sep 26
Denver, United States
79% AI deal score
$632
$437
Save $195
From SAN
Elite
Sep 12
Denver, United States
79% AI deal score
$617
$437
Save $180
From SAN
Elite
Sep 19
Denver, United States
79% AI deal score
$612
$437
Save $175
From SAN
Elite
Sep 30
Denver, United States
78% AI deal score
$705
$437
Save $268
From SAN
Elite
Sep 19
Denver, United States
78% AI deal score
$721
$437
Save $284
From SAN
Elite
Aug 25
Denver, United States
78% AI deal score
$679
$437
Save $242
From SAN
Elite
Aug 19
Denver, United States
78% AI deal score
$669
$437
Save $232
From SAN
Elite
Aug 29
Denver, United States
78% AI deal score
$677
$437
Save $240
From SAN
Elite
Aug 26
Denver, United States
78% AI deal score
$676
$437
Save $239
From SAN
Elite
Sep 02
Denver, United States
78% AI deal score
$699
$437
Save $262
From SAN
Elite
Sep 01
Denver, United States
78% AI deal score
$699
$437
Save $262
From SAN
Elite
Aug 26
Denver, United States
78% AI deal score
$672
$437
Save $235
From SAN
Elite
Sep 05
Denver, United States
78% AI deal score
$714
$437
Save $277
From SAN
Elite
Sep 29
Denver, United States
78% AI deal score
$606
$437
Save $169
From SAN
Elite
Sep 19
Denver, United States
78% AI deal score
$603
$437
Save $166
From SAN
Elite
Sep 08
Denver, United States
78% AI deal score
$606
$437
Save $169
From SAN
Elite
Sep 05
Denver, United States
78% AI deal score
$596
$437
Save $159
From SAN
Elite
Nov 11
Denver, United States
78% AI deal score
$675
$477
Save $198
From SAN
Elite
Sep 05
Denver, United States
77% AI deal score
$661
$437
Save $224
From SAN
Elite
Sep 15
Denver, United States
77% AI deal score
$660
$437
Save $223
From SAN
Elite
Sep 08
Denver, United States
77% AI deal score
$661
$437
Save $224
From SAN
Elite
Sep 02
Denver, United States
77% AI deal score
$662
$437
Save $225
From SAN
Elite
Aug 19
Denver, United States
77% AI deal score
$648
$437
Save $211
From SAN
Elite
Sep 05
Denver, United States
77% AI deal score
$661
$437
Save $224
From SAN
Elite
Aug 26
Denver, United States
77% AI deal score
$646
$437
Save $209
From SAN
Elite
Sep 01
Denver, United States
77% AI deal score
$677
$437
Save $240
From SAN
Elite
Aug 19
Denver, United States
77% AI deal score
$658
$437
Save $221
From SAN
Elite
Sep 05
Denver, United States
77% AI deal score
$689
$437
Save $252
From SAN
Elite
Aug 19
Denver, United States
77% AI deal score
$648
$437
Save $211
From SAN
Elite
Aug 29
Denver, United States
77% AI deal score
$669
$437
Save $232
From SAN
Elite
Aug 25
Denver, United States
77% AI deal score
$646
$437
Save $209
From SAN
Elite
Sep 15
Denver, United States
77% AI deal score
$665
$437
Save $228
From SAN
Elite
Sep 08
Denver, United States
77% AI deal score
$692
$437
Save $255
From SAN
Elite
Aug 29
Denver, United States
77% AI deal score
$651
$437
Save $214
From SAN
Elite
Sep 02
Denver, United States
77% AI deal score
$678
$437
Save $241
From SAN
Elite
Sep 08
Denver, United States
77% AI deal score
$661
$437
Save $224
From SAN
Elite
Aug 26
Denver, United States
77% AI deal score
$658
$437
Save $221
From SAN
Elite
Aug 25
Denver, United States
77% AI deal score
$670
$437
Save $233
From SAN
Elite
Sep 01
Denver, United States
77% AI deal score
$660
$437
Save $223
From SAN
Elite
Aug 25
Denver, United States
77% AI deal score
$657
$437
Save $220
From SAN
Elite
Aug 19
Denver, United States
77% AI deal score
$648
$438
Save $210
From SAN
Elite
Oct 03
Denver, United States
77% AI deal score
$641
$438
Save $203
From SAN
Elite
Oct 03
Denver, United States
77% AI deal score
$687
$438
Save $249
From SAN
Elite
Sep 30
Denver, United States
77% AI deal score
$582
$437
Save $145
From SAN
Elite
Sep 29
Denver, United States
77% AI deal score
$584
$437
Save $147
From SAN
Elite
Sep 26
Denver, United States
77% AI deal score
$585
$437
Save $148
From SAN
Elite
Sep 19
Denver, United States
77% AI deal score
$568
$437
Save $131
From SAN
Elite
Sep 30
Denver, United States
77% AI deal score
$585
$437
Save $148
From SAN
Elite
Nov 06
Denver, United States
77% AI deal score
$676
$497
Save $179
From SAN
Elite
Oct 27
Denver, United States
77% AI deal score
$768
$505
Save $263
From SAN
Elite
Sep 19
Denver, United States
77% AI deal score
$798
$505
Save $293
From SAN
Elite
Sep 01
Denver, United States
76% AI deal score
$645
$437
Save $208
From SAN
Elite
Sep 09
Denver, United States
76% AI deal score
$556
$437
Save $119
From SAN
Elite
Sep 19
Denver, United States
76% AI deal score
$564
$437
Save $127
From SAN
Elite
Sep 08
Denver, United States
76% AI deal score
$556
$437
Save $119
From SAN
Elite
Sep 15
Denver, United States
76% AI deal score
$563
$437
Save $126
From SAN
Elite
Sep 12
Denver, United States
76% AI deal score
$558
$437
Save $121
From SAN
Elite
Sep 15
Denver, United States
76% AI deal score
$558
$437
Save $121
From SAN
Elite
Sep 09
Denver, United States
76% AI deal score
$561
$437
Save $124
From SAN
Elite
Sep 02
Denver, United States
76% AI deal score
$560
$437
Save $123
From SAN
Elite
Sep 05
Denver, United States
76% AI deal score
$555
$437
Save $118
From SAN
Elite
Sep 01
Denver, United States
76% AI deal score
$560
$437
Save $123
From SAN
Elite
Sep 05
Denver, United States
76% AI deal score
$757
$505
Save $252
From SAN
Elite
Sep 01
Denver, United States
76% AI deal score
$798
$515
Save $283
From SAN
Elite
Aug 03
Denver, United States
76% AI deal score
$856
$560
Save $296
From SAN
Elite
Dec 08
Denver, United States
75% AI deal score
$679
$537
Save $142
From SAN
Elite
Sep 23
Denver, United States
75% AI deal score
$763
$515
Save $248
From SAN
Elite
Sep 27
Denver, United States
75% AI deal score
$797
$550
Save $247
From SAN
Elite
Dec 09
Denver, United States
70% AI deal score
$665
$512
Save $153
From SAN
Elite
Dec 01
Denver, United States
70% AI deal score
$656
$512
Save $144
From SAN
Elite
Dec 16
Denver, United States
70% AI deal score
$661
$512
Save $149
From SAN
Elite
Dec 09
Denver, United States
70% AI deal score
$672
$512
Save $160
From SAN
Elite
Dec 09
Denver, United States
70% AI deal score
$652
$512
Save $140
From SAN
Elite
Oct 25
Denver, United States
70% AI deal score
$640
$532
Save $108
From SAN
Elite
Dec 07
Denver, United States
70% AI deal score
$679
$567
Save $112
From SAN
Elite
Dec 05
Denver, United States
70% AI deal score
$679
$567
Save $112
From SAN
Elite
Sep 11
Denver, United States
70% AI deal score
$809
$560
Save $249
From SAN
Elite
Sep 03
Denver, United States
70% AI deal score
$776
$560
Save $216
From SAN
Elite
Nov 21
Denver, United States
69% AI deal score
$677
$527
Save $150
From SAN
Elite
Nov 21
Denver, United States
69% AI deal score
$642
$527
Save $115
From SAN
Elite
Nov 21
Denver, United States
69% AI deal score
$642
$527
Save $115
From SAN
Elite
Nov 27
Denver, United States
69% AI deal score
$652
$527
Save $125
From SAN
Elite
Dec 11
Denver, United States
69% AI deal score
$655
$527
Save $128
From SAN
Elite
Dec 01
Denver, United States
49% AI deal score
$626
$625
Save $1
From SAN
Elite
Jun 19
Denver, United States
47% AI deal score
$887