$45+ Cheap flights from San Diego (SAN) to Colorado
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DEN
Apr 9 — Apr 161
Round-trip
1 adult, Economy
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Cheapest flights from San Diego to ColoradoExplore the most affordable flight options available from San Diego to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
Explore the most affordable flight options available from San Diego to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/812:00 pm
SAN
- DEN
Nonstop2h 34m
Frontier
Sun 4/1210:30 pm
DEN
- SAN
Nonstop2h 32m
Frontier
Deal found 3/5![Frontier logo]()
$56
This Trip.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/56:25 am
SAN
- DEN
Nonstop2h 40m
Frontier
Sun 4/1210:30 pm
DEN
- SAN
Nonstop2h 32m
Frontier
Deal found 3/6![Frontier logo]()
$59
This Trip.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:42 am
SAN
- DEN
Nonstop2h 41m
Frontier
Sat 5/99:30 pm
DEN
- SAN
Nonstop2h 36m
Frontier
Deal found 3/9![Frontier logo]()
$60
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Sun 4/267:00 am
DEN
- SAN
Nonstop2h 34m
Frontier
Deal found 3/5![Frontier logo]()
$69
This Super.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:00 am
SAN
- DEN
Nonstop2h 41m
Frontier
Fri 4/2410:29 pm
DEN
- SAN
Nonstop2h 30m
Frontier
Deal found 3/6![Frontier logo]()
$71
This Trip.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:15 am
SAN
- DEN
Nonstop2h 35m
Frontier
Fri 4/2410:29 pm
DEN
- SAN
Nonstop2h 30m
Frontier
Deal found 3/6![Frontier logo]()
$75
This Super.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/239:08 pm
SAN
- DEN
Nonstop2h 29m
Frontier
Mon 3/3010:29 pm
DEN
- SAN
Nonstop2h 39m
Frontier
Deal found 3/9![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/39:28 pm
SAN
- DEN
Nonstop2h 33m
Frontier
Fri 4/1010:30 pm
DEN
- SAN
Nonstop2h 32m
Frontier
Deal found 3/8![Frontier logo]()
$81
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:25 am
SAN
- DEN
Nonstop2h 35m
Frontier
Tue 3/2410:29 pm
DEN
- SAN
Nonstop2h 39m
Frontier
Deal found 3/5![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:25 am
SAN
- DEN
Nonstop2h 35m
Frontier
Tue 3/317:31 pm
DEN
- SAN
Nonstop2h 43m
Frontier
Deal found 3/5![Frontier logo]()
$84
This Southwest deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/25:00 pm
SAN
- COS
Nonstop2h 15m
Southwest
Thu 4/92:15 pm
COS
- SAN
Nonstop2h 20m
Southwest
Deal found 3/5![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:15 am
SAN
- COS
1 stop4h 20m
Southwest
Sat 5/165:25 pm
COS
- SAN
1 stop5h 00m
Southwest
Deal found 3/8![Southwest logo]()
$159
Best flights from San Diego to ColoradoDiscover carefully curated flight deals from San Diego to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
Discover carefully curated flight deals from San Diego to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:50 pm
SAN
- DEN
Nonstop2h 30m
Southwest
Fri 4/108:10 pm
DEN
- SAN
1 stop3h 55m
Southwest
Deal found 3/7![Southwest logo]()
$127
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/14:09 pm
SAN
- DEN
1 stop6h 34m
United Airlines
Sun 7/57:40 am
DEN
- SAN
Nonstop2h 22m
United Airlines
Deal found 3/5![United Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:01 pm
SAN
- GJT
1 stop3h 59m
Delta
Mon 6/16:51 pm
GJT
- SAN
1 stop5h 52m
Delta
Deal found 3/7![Delta logo]()
$231
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/175:55 pm
SAN
- DEN
1 stop4h 00m
Southwest
Mon 4/205:10 pm
DEN
- SAN
1 stop3h 45m
Southwest
Deal found 3/8![Southwest logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/252:08 pm
SAN
- GJT
1 stop20h 59m
Multiple Airlines
Sun 3/298:14 pm
GJT
- SAN
2 stops43h 32m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:40 am
SAN
- DEN
2 stops5h 25m
Southwest
Fri 4/245:10 pm
DEN
- SAN
1 stop3h 45m
Southwest
Deal found 3/7![Southwest logo]()
$138
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:40 am
SAN
- DEN
2 stops5h 25m
Southwest
Sun 5/312:25 pm
DEN
- SAN
1 stop4h 20m
Southwest
Deal found 3/9![Southwest logo]()
$142
This American Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/216:24 am
SAN
- GJT
1 stop4h 08m
American Airlines
Wed 3/2512:08 pm
GJT
- SAN
1 stop4h 52m
American Airlines
Deal found 3/6![American Airlines logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/229:20 am
SAN
- HDN
Nonstop2h 28m
Alaska Airlines
Thu 3/261:28 pm
HDN
- SAN
Nonstop2h 27m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$417
This Southwest deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/305:00 pm
SAN
- COS
Nonstop2h 15m
Southwest
Thu 4/22:40 pm
COS
- SAN
Nonstop2h 35m
Southwest
Deal found 3/5![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/236:15 am
SAN
- MTJ
1 stop6h 14m
United Airlines
Fri 3/272:10 pm
MTJ
- SAN
1 stop6h 38m
United Airlines
Deal found 3/8![United Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/22:40 pm
SAN
- COS
1 stop5h 05m
Southwest
Sat 6/64:50 pm
COS
- SAN
1 stop5h 10m
Southwest
Deal found 3/8![Southwest logo]()
$168
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:35 am
SAN
- DEN
Nonstop2h 33m
United Airlines
Sun 7/55:32 am
DEN
- SAN
1 stop5h 36m
United Airlines
Deal found 3/9![United Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:35 am
SAN
- COS
1 stop4h 55m
Southwest
Tue 4/147:05 am
COS
- SAN
2 stops6h 05m
Southwest
Deal found 3/9![Southwest logo]()
$182
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:00 pm
SAN
- COS
2 stops5h 49m
United Airlines
Sun 8/305:30 am
COS
- SAN
1 stop4h 35m
United Airlines
Deal found 3/5![United Airlines logo]()
$252
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:45 pm
SAN
- DEN
1 stop4h 00m
Southwest
Mon 4/61:20 pm
DEN
- SAN
1 stop3h 55m
Southwest
Deal found 3/6![Southwest logo]()
$198
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:32 am
SAN
- GJT
1 stop5h 06m
United Airlines
Mon 4/135:30 am
GJT
- SAN
1 stop4h 46m
United Airlines
Deal found 3/5![United Airlines logo]()
$266
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:05 pm
SAN
- DEN
1 stop4h 32m
United Airlines
Wed 5/611:25 am
DEN
- SAN
1 stop6h 59m
United Airlines
Deal found 3/8![United Airlines logo]()
$267
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/66:32 am
SAN
- COS
1 stop6h 58m
United Airlines
Wed 4/86:00 am
COS
- SAN
1 stop4h 16m
United Airlines
Deal found 3/8![United Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:20 am
SAN
- MTJ
2 stops7h 50m
Southwest
Tue 4/148:45 am
MTJ
- SAN
1 stop4h 20m
Southwest
Deal found 3/9![Southwest logo]()
$236
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:30 am
SAN
- MTJ
1 stop7h 07m
United Airlines
Thu 3/193:39 pm
MTJ
- SAN
2 stops9h 01m
United Airlines
Deal found 3/8![United Airlines logo]()
$284
This Southwest deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:10 pm
SAN
- COS
Nonstop2h 15m
Southwest
Sun 4/195:55 am
COS
- SAN
1 stop4h 10m
Southwest
Deal found 3/5![Southwest logo]()
$248
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2011:03 am
SAN
- ASE
1 stop4h 14m
United Airlines
Tue 3/242:27 pm
ASE
- SAN
1 stop7h 36m
United Airlines
Deal found 3/5![United Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:55 am
SAN
- COS
1 stop3h 40m
Southwest
Sun 4/121:50 pm
COS
- SAN
1 stop7h 10m
Southwest
Deal found 3/9![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:09 pm
SAN
- DRO
1 stop5h 14m
United Airlines
Sat 5/25:30 am
DRO
- SAN
1 stop4h 45m
United Airlines
Deal found 3/7![United Airlines logo]()
$290
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:40 am
SAN
- DEN
2 stops5h 25m
Southwest
Fri 4/248:10 pm
DEN
- SAN
1 stop3h 55m
Southwest
Deal found 3/9![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:32 am
SAN
- DRO
1 stop5h 02m
United Airlines
Mon 4/1311:36 am
DRO
- SAN
2 stops9h 36m
United Airlines
Deal found 3/5![United Airlines logo]()
$296
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:35 pm
SAN
- COS
1 stop5h 00m
Southwest
Sun 4/56:25 pm
COS
- SAN
Nonstop2h 30m
Southwest
Deal found 3/6![Southwest logo]()
$259
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/710:55 am
SAN
- DRO
2 stops9h 11m
United Airlines
Sat 5/95:30 am
DRO
- SAN
1 stop4h 45m
United Airlines
Deal found 3/7![United Airlines logo]()
$296
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/912:40 pm
SAN
- GUC
1 stop6h 39m
United Airlines
Tue 4/141:25 pm
GUC
- SAN
1 stop4h 51m
United Airlines
Deal found 3/6![United Airlines logo]()
$301
Last-minute flights from San Diego to ColoradoDiscover last-minute flight deals from San Diego to Colorado. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Colorado. Data last updated March 10, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:25 am
SAN
- DEN
Nonstop2h 35m
Frontier
Wed 4/110:30 pm
DEN
- SAN
Nonstop2h 32m
Frontier
Deal found 3/5![Frontier logo]()
$84
This Cheapflightsfares deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:25 am
SAN
- DEN
Nonstop2h 35m
Frontier
Tue 3/317:31 pm
DEN
- SAN
Nonstop2h 43m
Frontier
Deal found 3/6![Frontier logo]()
$85
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:25 am
SAN
- DEN
Nonstop2h 35m
Frontier
Tue 3/2410:29 pm
DEN
- SAN
Nonstop2h 39m
Frontier
Deal found 3/5![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/239:08 pm
SAN
- DEN
Nonstop2h 29m
Frontier
Mon 3/3010:29 pm
DEN
- SAN
Nonstop2h 39m
Frontier
Deal found 3/9![Frontier logo]()
$80
This Expedia deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/18:42 am
SAN
- DEN
Nonstop2h 38m
Multiple Airlines
Sun 4/1210:30 pm
DEN
- SAN
Nonstop2h 32m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$87
This Southwest deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/25:00 pm
SAN
- COS
Nonstop2h 15m
Southwest
Thu 4/92:15 pm
COS
- SAN
Nonstop2h 20m
Southwest
Deal found 3/5![Southwest logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/39:28 pm
SAN
- DEN
Nonstop2h 33m
Frontier
Fri 4/1010:30 pm
DEN
- SAN
Nonstop2h 32m
Frontier
Deal found 3/8![Frontier logo]()
$81
This Trip.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/56:25 am
SAN
- DEN
Nonstop2h 40m
Frontier
Sun 4/1210:30 pm
DEN
- SAN
Nonstop2h 32m
Frontier
Deal found 3/6![Frontier logo]()
$59
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/812:00 pm
SAN
- DEN
Nonstop2h 34m
Frontier
Sun 4/1210:30 pm
DEN
- SAN
Nonstop2h 32m
Frontier
Deal found 3/5![Frontier logo]()
$56
This Trip.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:15 am
SAN
- DEN
Nonstop2h 35m
Frontier
Fri 4/2410:29 pm
DEN
- SAN
Nonstop2h 30m
Frontier
Deal found 3/6![Frontier logo]()
$75
This Super.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/228:00 am
SAN
- DEN
Nonstop2h 41m
Frontier
Fri 4/2410:29 pm
DEN
- SAN
Nonstop2h 30m
Frontier
Deal found 3/6![Frontier logo]()
$71
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Sun 4/267:00 am
DEN
- SAN
Nonstop2h 34m
Frontier
Deal found 3/5![Frontier logo]()
$69
One-way flights from San Diego to ColoradoSearch for one-way flight options from San Diego to Colorado. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
Search for one-way flight options from San Diego to Colorado. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This Frontier deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:25 am
SAN
- DEN
Nonstop2h 44m
Frontier
Deal found 3/6![Frontier logo]()
$45
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/6![Frontier logo]()
$52
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:25 am
SAN
- DEN
Nonstop2h 44m
Frontier
Deal found 3/6![Frontier logo]()
$53
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:25 am
SAN
- DEN
Nonstop2h 44m
Frontier
Deal found 3/5![Frontier logo]()
$54
This Trip.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:20 pm
SAN
- DEN
1 stop8h 00m
Frontier
Deal found 3/7![Frontier logo]()
$55
This Frontier deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/39:28 pm
SAN
- DEN
Nonstop2h 33m
Frontier
Deal found 3/7![Frontier logo]()
$56
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:15 am
SAN
- DEN
Nonstop2h 35m
Frontier
Deal found 3/5![Frontier logo]()
$57
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:25 am
SAN
- DEN
Nonstop2h 40m
Frontier
Deal found 3/5![Frontier logo]()
$58
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:14 pm
SAN
- DEN
Nonstop2h 31m
United Airlines
Deal found 3/9![United Airlines logo]()
$59
This Super.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:25 am
SAN
- DEN
Nonstop2h 35m
Frontier
Deal found 3/5![Frontier logo]()
$63
This Frontier deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:25 am
SAN
- DEN
Nonstop2h 35m
Frontier
Deal found 3/6![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:51 am
SAN
- DEN
1 stop5h 19m
Frontier
Deal found 3/6![Frontier logo]()
$65
Find flight deals from San Diego to Colorado
Keep the following information in mind while searching for San Diego to Colorado flight deals. Data was last updated March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $56 (Cheapflightsfares) |
One-way from | $45 (Frontier) |
Popular in | June |
Cheapest in | February |
Average price | $197 |
Good round-trip deal | $177 or less |
Good one-way deal | $117 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego to Colorado that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
Use the filters below to find and compare flights from San Diego to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Mon 4/6
7:50 pm-11:20 pm
Nonstop2h 30m
Denver Intl
Fri 4/10
8:10 pm-11:05 pm
1 stop3h 55m
$127
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Fri 4/17
5:55 pm-10:55 pm
1 stop4h 00m
Denver Intl
Mon 4/20
5:10 pm-7:55 pm
1 stop3h 45m
$132
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Tue 4/21
8:40 am-3:05 pm
2 stops5h 25m
Denver Intl
Fri 4/24
5:10 pm-7:55 pm
1 stop3h 45m
$138
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Wed 4/29
8:40 am-3:05 pm
2 stops5h 25m
Denver Intl
Sun 5/3
12:25 pm-3:45 pm
1 stop4h 20m
$142
Quickest round-trip
San DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Mon 3/30
5:00 pm-8:15 pm
Nonstop2h 15m
Colorado Springs
Thu 4/2
2:40 pm-4:15 pm
Nonstop2h 35m
$157
San DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Tue 6/2
2:40 pm-8:45 pm
1 stop5h 05m
Colorado Springs
Sat 6/6
4:50 pm-9:00 pm
1 stop5h 10m
$168
San DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Tue 4/7
9:35 am-3:30 pm
1 stop4h 55m
Colorado Springs
Tue 4/14
7:05 am-12:10 pm
2 stops6h 05m
$182
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Wed 4/1
7:45 pm-12:45 am
1 stop4h 00m
Denver Intl
Mon 4/6
1:20 pm-4:15 pm
1 stop3h 55m
$198
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Wed 7/1
4:09 pm-11:43 pm
1 stop6h 34m
Denver Intl
Sun 7/5
7:40 am-9:02 am
Nonstop2h 22m
$227
San DiegoGrand Junction
SAN - GJT
SANGJT
San Diego
Fri 5/29
5:01 pm-10:00 pm
1 stop3h 59m
Grand Junction Regnl
Mon 6/1
6:51 pm-11:43 pm
1 stop5h 52m
$231
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from San Diego to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from San Diego with our price prediction graph.
SAN-DEN
SAN-COS
SAN-GJT
SAN-HDN
SAN-MTJ
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Diego to Colorado
SAN-USCO
SAN-DEN
SAN-COS
SAN-GJT
SAN-HDN
What is the cheapest month to book a flight from San Diego to Colorado?
Currently, January is the cheapest month in which you can book a flight from San Diego to Colorado (average of $38). Flying from San Diego to Colorado in May is currently the most expensive (average of $70). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SAN to CO?
Find hourly flight availability from San Diego to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 10, 2026.
When flying from San Diego to Colorado, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 53% versus a flight at noon.
What is the cheapest day to fly from San Diego to Colorado?
Use this chart to determine the cheapest time to fly round-trip from San Diego to Colorado. Price data was last updated on February 21, 2026.
Travelers seeking maximum savings on their San Diego to Colorado flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from San Diego to Colorado
Explore weekly flight availability from San Diego to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 10, 2026.
The most flights from SAN to USCO are scheduled on a Tuesday (29 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (15 on average).
Reviews of airlines servicing Colorado
Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated March 10, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, andUnited Airlines from San Diego to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.1
Comfort
7.8
Overall
8.0
Entertainment
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from San Diego to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Diego to Colorado
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Complete your trip
Complete your trip to Colorado by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Diego to Colorado by cabin class
Find flights from San Diego to Colorado, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Diego and Colorado flights
Browse other San Diego and Colorado flight options. Last updated on March 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Diego to Colorado flights
Consider these flights traveling from San Diego to Colorado.
Top 7 airlines flying from San Diego to Colorado
Discover the top 7 airlines that operate flights from San Diego to Colorado. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$54 | Average$155 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$68 | Average$177 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$106 | Average$383 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$410 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$121 | Average$400 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$215 | Average$321 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$218 | Average$388 | FlexibilityNo cancel fee | On-time71% |