$71+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DEN
Jul 13 — Jul 201
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 June 13, 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 June 13, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Tue 8/47:40 am
DEN
- SAN
Nonstop2h 25m
Frontier
Deal found 6/9![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 10/148:32 pm
SAN
- DEN
Nonstop2h 34m
Frontier
Sat 10/1710:32 pm
DEN
- SAN
Nonstop2h 27m
Frontier
Deal found 6/10![Frontier logo]()
$125
This Cheapflightsfares deal was found by Cheapflights users on 6/13. 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 10/86:25 am
SAN
- DEN
Nonstop2h 33m
Frontier
Sun 10/1110:32 pm
DEN
- SAN
Nonstop2h 27m
Frontier
Deal found 6/13![Frontier logo]()
$126
This Trip.com deal was found by Cheapflights users on 6/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Tue 8/117:45 am
DEN
- SAN
Nonstop2h 25m
Frontier
Deal found 6/10![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:32 pm
SAN
- DEN
Nonstop2h 34m
Frontier
Mon 9/1410:32 pm
DEN
- SAN
Nonstop2h 27m
Frontier
Deal found 6/9![Frontier logo]()
$129
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Fri 8/219:37 am
SAN
- DEN
Nonstop2h 36m
Frontier
Sun 8/237:13 am
DEN
- SAN
Nonstop2h 29m
Frontier
Deal found 6/11![Frontier logo]()
$132
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:25 am
SAN
- DEN
Nonstop2h 41m
Frontier
Mon 8/247:13 am
DEN
- SAN
Nonstop2h 29m
Frontier
Deal found 6/10![Frontier logo]()
$133
This Priceline deal was found by Cheapflights users on 6/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:25 am
SAN
- DEN
Nonstop2h 33m
Frontier
Sun 11/810:32 pm
DEN
- SAN
Nonstop2h 27m
Frontier
Deal found 6/10![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Tue 8/184:17 pm
SAN
- DEN
1 stop4h 29m
Frontier
Tue 8/259:01 am
DEN
- SAN
1 stop7h 31m
Frontier
Deal found 6/10![Frontier logo]()
$135
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:10 am
SAN
- DEN
Nonstop2h 41m
Frontier
Fri 8/710:29 pm
DEN
- SAN
Nonstop2h 22m
Frontier
Deal found 6/8![Frontier logo]()
$136
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 8/96:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Mon 8/107:45 am
DEN
- SAN
Nonstop2h 25m
Frontier
Deal found 6/11![Frontier logo]()
$137
This Southwest deal was found by Cheapflights users on 6/8. 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 8/41:45 pm
SAN
- COS
1 stop5h 10m
Southwest
Wed 8/55:40 pm
COS
- SAN
1 stop4h 15m
Southwest
Deal found 6/8![Southwest logo]()
$180
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 June 13, 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 June 13, 2026.
This Southwest deal was found by Cheapflights users on 6/8. 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.
Wed 7/85:45 pm
SAN
- COS
1 stop5h 05m
Southwest
Wed 7/157:05 pm
COS
- SAN
1 stop4h 50m
Southwest
Deal found 6/8![Southwest logo]()
$193
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:30 pm
SAN
- DEN
1 stop4h 40m
Delta
Mon 9/1411:00 am
DEN
- SAN
1 stop5h 56m
Delta
Deal found 6/10![Delta logo]()
$207
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 9/264:11 pm
SAN
- COS
1 stop4h 55m
United Airlines
Tue 9/291:29 pm
COS
- SAN
2 stops8h 16m
United Airlines
Deal found 6/8![United Airlines logo]()
$290
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 7/27:15 pm
SAN
- DRO
1 stop3h 47m
American Airlines
Tue 7/76:00 am
DRO
- SAN
1 stop3h 51m
American Airlines
Deal found 6/11![American Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:00 am
SAN
- DEN
1 stop7h 10m
Delta
Fri 9/187:25 pm
DEN
- SAN
1 stop5h 17m
Delta
Deal found 6/10![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 6/12. 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 9/158:35 am
SAN
- COS
2 stops10h 35m
Southwest
Fri 9/185:10 pm
COS
- SAN
1 stop6h 00m
Southwest
Deal found 6/12![Southwest logo]()
$232
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/236:35 am
SAN
- GJT
1 stop7h 05m
United Airlines
Mon 6/296:10 pm
GJT
- SAN
1 stop5h 15m
United Airlines
Deal found 6/10![United Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:35 am
SAN
- COS
1 stop5h 15m
Southwest
Sun 10/115:55 am
COS
- SAN
1 stop4h 10m
Southwest
Deal found 6/10![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/266:30 am
SAN
- GJT
1 stop5h 08m
United Airlines
Sat 8/291:40 pm
GJT
- SAN
1 stop4h 20m
United Airlines
Deal found 6/11![United Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 6/11. 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.
Sun 8/96:35 am
SAN
- DEN
1 stop4h 55m
Southwest
Mon 8/108:05 am
DEN
- SAN
1 stop4h 10m
Southwest
Deal found 6/11![Southwest logo]()
$295
This Delta deal was found by Cheapflights users on 6/11. 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 6/195:01 pm
SAN
- GJT
1 stop3h 53m
Delta
Tue 6/237:40 am
GJT
- SAN
2 stops8h 31m
Delta
Deal found 6/11![Delta logo]()
$353
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/36:35 am
SAN
- GJT
1 stop4h 56m
United Airlines
Mon 8/175:30 am
GJT
- SAN
2 stops7h 05m
United Airlines
Deal found 6/12![United Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:00 am
SAN
- COS
1 stop4h 30m
Southwest
Sun 11/810:05 am
COS
- SAN
Nonstop2h 20m
Southwest
Deal found 6/10![Southwest logo]()
$313
This Delta deal was found by Cheapflights users on 6/12. 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.
Thu 7/163:00 pm
SAN
- ASE
1 stop4h 25m
Delta
Tue 7/2112:03 pm
ASE
- SAN
1 stop4h 05m
Delta
Deal found 6/12![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/286:35 am
SAN
- ASE
1 stop7h 09m
United Airlines
Tue 8/45:10 pm
ASE
- SAN
1 stop4h 36m
United Airlines
Deal found 6/11![United Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 6/11. 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 10/2611:05 am
SAN
- MTJ
2 stops7h 50m
Southwest
Fri 10/308:30 am
MTJ
- SAN
1 stop7h 05m
Southwest
Deal found 6/11![Southwest logo]()
$326
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/76:35 am
SAN
- COS
1 stop4h 48m
United Airlines
Mon 8/106:32 pm
COS
- SAN
1 stop4h 53m
United Airlines
Deal found 6/11![United Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 6/11. 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 6/193:00 pm
SAN
- GJT
2 stops5h 54m
Delta
Fri 6/266:50 pm
GJT
- SAN
1 stop6h 06m
Delta
Deal found 6/11![Delta logo]()
$376
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 7/48:45 am
SAN
- ASE
1 stop4h 59m
United Airlines
Tue 7/145:10 pm
ASE
- SAN
2 stops7h 44m
United Airlines
Deal found 6/8![United Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 6/8. 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.
Mon 8/1710:30 am
SAN
- MTJ
2 stops7h 50m
Southwest
Thu 8/209:10 am
MTJ
- SAN
2 stops7h 00m
Southwest
Deal found 6/8![Southwest logo]()
$342
This Delta deal was found by Cheapflights users on 6/12. 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.
Thu 8/133:00 pm
SAN
- ASE
1 stop4h 24m
Delta
Mon 8/1712:03 pm
ASE
- SAN
1 stop4h 07m
Delta
Deal found 6/12![Delta logo]()
$394
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Sat 8/296:30 am
SAN
- MTJ
1 stop6h 57m
United Airlines
Tue 9/13:24 pm
MTJ
- SAN
1 stop6h 10m
United Airlines
Deal found 6/9![United Airlines logo]()
$338
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/267:50 pm
SAN
- COS
1 stop4h 30m
Southwest
Mon 6/2912:20 pm
COS
- SAN
Nonstop2h 15m
Southwest
Deal found 6/10![Southwest logo]()
$343
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 6/185:01 pm
SAN
- GJT
1 stop3h 53m
Delta
Tue 6/307:40 am
GJT
- SAN
2 stops8h 31m
Delta
Deal found 6/11![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 11/72:30 pm
SAN
- MTJ
1 stop4h 39m
United Airlines
Wed 11/111:35 pm
MTJ
- SAN
1 stop4h 35m
United Airlines
Deal found 6/8![United Airlines logo]()
$338
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3012:55 pm
SAN
- COS
Nonstop2h 25m
Southwest
Mon 8/37:55 pm
COS
- SAN
1 stop3h 50m
Southwest
Deal found 6/10![Southwest logo]()
$346
This United Airlines deal was found by Cheapflights users on 6/12. 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 6/296:55 pm
SAN
- COS
1 stop4h 04m
United Airlines
Thu 7/26:32 pm
COS
- SAN
1 stop4h 53m
United Airlines
Deal found 6/12![United Airlines logo]()
$340
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/83:00 pm
SAN
- ASE
1 stop4h 25m
Delta
Wed 7/1512:03 pm
ASE
- SAN
1 stop4h 05m
Delta
Deal found 6/10![Delta logo]()
$420
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:40 pm
SAN
- COS
1 stop3h 55m
Southwest
Sun 8/94:40 pm
COS
- SAN
2 stops6h 10m
Southwest
Deal found 6/10![Southwest logo]()
$361
This United Airlines deal was found by Cheapflights users on 6/8. 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 6/226:35 am
SAN
- GUC
1 stop7h 04m
United Airlines
Thu 7/23:20 pm
GUC
- SAN
2 stops10h 11m
United Airlines
Deal found 6/8![United Airlines logo]()
$344
Last-minute flights from San Diego to ColoradoDiscover last-minute flight deals from San Diego to Colorado. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Colorado. Data last updated June 13, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 7/710:00 am
SAN
- DEN
Nonstop2h 41m
Frontier
Wed 8/510:29 pm
DEN
- SAN
Nonstop2h 22m
Frontier
Deal found 6/11![Frontier logo]()
$139
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 7/76:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Wed 7/87:40 am
DEN
- SAN
Nonstop2h 25m
Frontier
Deal found 6/12![Frontier logo]()
$156
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:45 pm
SAN
- COS
1 stop5h 05m
Southwest
Wed 7/87:55 pm
COS
- SAN
1 stop3h 50m
Southwest
Deal found 6/10![Southwest logo]()
$218
This Southwest deal was found by Cheapflights users on 6/9. 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 7/75:45 pm
SAN
- COS
1 stop5h 05m
Southwest
Tue 7/147:25 am
COS
- SAN
2 stops7h 20m
Southwest
Deal found 6/9![Southwest logo]()
$223
This Southwest deal was found by Cheapflights users on 6/8. 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.
Wed 7/85:45 pm
SAN
- COS
1 stop5h 05m
Southwest
Wed 7/157:05 pm
COS
- SAN
1 stop4h 50m
Southwest
Deal found 6/8![Southwest logo]()
$193
This Frontier deal was found by Cheapflights users on 6/12. 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 7/2110:00 am
SAN
- DEN
Nonstop2h 41m
Frontier
Wed 7/2910:29 pm
DEN
- SAN
Nonstop2h 22m
Frontier
Deal found 6/12![Frontier logo]()
$158
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Tue 8/410:29 pm
DEN
- SAN
Nonstop2h 22m
Frontier
Deal found 6/8![Frontier logo]()
$129
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Tue 8/47:40 am
DEN
- SAN
Nonstop2h 25m
Frontier
Deal found 6/9![Frontier logo]()
$124
This Mytrip deal was found by Cheapflights users on 6/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Tue 8/257:13 am
DEN
- SAN
Nonstop2h 29m
Frontier
Deal found 6/8![Frontier logo]()
$132
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Wed 8/57:45 am
DEN
- SAN
Nonstop2h 25m
Frontier
Deal found 6/8![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Wed 7/293:03 pm
SAN
- DEN
1 stop5h 38m
Frontier
Mon 8/310:29 pm
DEN
- SAN
Nonstop2h 22m
Frontier
Deal found 6/8![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Thu 7/306:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Tue 8/410:29 pm
DEN
- SAN
Nonstop2h 22m
Frontier
Deal found 6/12![Frontier logo]()
$147
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 June 13, 2026.
Search for one-way flight options from San Diego to Colorado. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 9/99:57 am
SAN
- DEN
1 stop4h 41m
Frontier
Deal found 6/10![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/53:03 pm
SAN
- DEN
1 stop5h 38m
Frontier
Deal found 6/9![Frontier logo]()
$74
This Frontier deal was found by Cheapflights users on 6/11. 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.
Thu 8/66:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Deal found 6/11![Frontier logo]()
$75
This Frontier deal was found by Cheapflights users on 6/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Deal found 6/8![Frontier logo]()
$77
This Super.com deal was found by Cheapflights users on 6/13. 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 7/86:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Deal found 6/13![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Tue 9/89:53 pm
SAN
- DEN
1 stop4h 59m
Frontier
Deal found 6/11![Frontier logo]()
$84
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:30 am
SAN
- DEN
Nonstop2h 36m
United Airlines
Deal found 6/10![United Airlines logo]()
$87
This Super.com deal was found by Cheapflights users on 6/9. 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 7/65:57 pm
SAN
- DEN
Nonstop2h 40m
Frontier
Deal found 6/9![Frontier logo]()
$88
This Southwest deal was found by Cheapflights users on 6/8. 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 8/41:45 pm
SAN
- COS
1 stop5h 10m
Southwest
Deal found 6/8![Southwest logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Thu 9/109:57 am
SAN
- DEN
1 stop7h 38m
Frontier
Deal found 6/10![Frontier logo]()
$91
This Southwest deal was found by Cheapflights users on 6/11. 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 7/85:45 pm
SAN
- COS
1 stop5h 05m
Southwest
Deal found 6/11![Southwest logo]()
$94
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:25 pm
SAN
- COS
2 stops6h 30m
Southwest
Deal found 6/10![Southwest logo]()
$96
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 June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $124 (Cheapflightsfares) |
One-way from | $71 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $267 |
Good round-trip deal | $253 or less |
Good one-way deal | $149 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 June 13, 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 DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Wed 7/8
5:45 pm-11:50 pm
1 stop5h 05m
Colorado Springs
Wed 7/15
7:05 pm-10:55 pm
1 stop4h 50m
$193
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Wed 9/9
1:30 pm-7:10 pm
1 stop4h 40m
Denver Intl
Mon 9/14
11:00 am-3:56 pm
1 stop5h 56m
$207
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Fri 9/11
10:00 am-6:10 pm
1 stop7h 10m
Denver Intl
Fri 9/18
7:25 pm-11:42 pm
1 stop5h 17m
$217
San DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Tue 9/15
8:35 am-8:10 pm
2 stops10h 35m
Colorado Springs
Fri 9/18
5:10 pm-10:10 pm
1 stop6h 00m
$232
San DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Tue 10/6
6:35 am-12:50 pm
1 stop5h 15m
Colorado Springs
Sun 10/11
5:55 am-9:05 am
1 stop4h 10m
$283
San DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Sat 9/26
4:11 pm-10:06 pm
1 stop4h 55m
Colorado Springs
Tue 9/29
1:29 pm-8:45 pm
2 stops8h 16m
$290
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sun 8/9
6:35 am-12:30 pm
1 stop4h 55m
Denver Intl
Mon 8/10
8:05 am-11:15 am
1 stop4h 10m
$295
San DiegoGrand Junction
SAN - GJT
SANGJT
San Diego
Tue 6/23
6:35 am-2:40 pm
1 stop7h 05m
Grand Junction Regnl
Mon 6/29
6:10 pm-10:25 pm
1 stop5h 15m
$307
San DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Fri 11/6
11:00 am-4:30 pm
1 stop4h 30m
Colorado Springs
Sun 11/8
10:05 am-11:25 am
Nonstop2h 20m
$313
San DiegoGrand Junction
SAN - GJT
SANGJT
San Diego
Wed 8/26
6:30 am-12:38 pm
1 stop5h 08m
Grand Junction Regnl
Sat 8/29
1:40 pm-5:00 pm
1 stop4h 20m
$315
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-DRO
SAN-GJT
SAN-ASE
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-DRO
SAN-GJT
What is the cheapest month to book a flight from San Diego to Colorado?
Currently, September is the cheapest month in which you can book a flight from San Diego to Colorado (average of $245). Flying from San Diego to Colorado in July is currently the most expensive (average of $478). 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 June 13, 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 48% versus a flight at noon.
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 June 13, 2026.
The most flights from SAN to USCO are scheduled on a Friday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).
How much does it cost to fly round-trip from San Diego to Colorado?
How far ahead should I book a flight from San Diego to Colorado?
To ensure you get the cheapest price possible for a flight from San Diego to Colorado, you should look to book at least 62 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 June 8, 2026.
Travelers seeking maximum savings on their San Diego to Colorado flight should consider departing on Tuesday at noon when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 June 13, 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
7.0
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Food
7.0
Comfort
7.8
Entertainment
7.0
Crew
8.5
Overall
7.9
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
See prices for flight routes from nearby airports that may be better suited for you.
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 June 13, 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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$148 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$68 | Average$167 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$113 | Average$373 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$404 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$374 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$215 | Average$328 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$228 | Average$443 | FlexibilityNo cancel fee | On-time71% |