$79+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DEN
Aug 28 — Sep 41
Round-trip
1 adult, Economy
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Find cheap flights from San Diego to Colorado with Cheapflights
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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 July 29, 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 July 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/183:45 pm
SAN
- DEN
Nonstop2h 35m
Frontier
Wed 8/1912:22 pm
DEN
- SAN
1 stop8h 53m
Frontier
Deal found 7/28![Frontier logo]()
$157
This Southwest deal was found by Cheapflights users on 7/27. 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 9/141:10 pm
SAN
- COS
Nonstop2h 20m
Southwest
Thu 9/172:15 pm
COS
- SAN
Nonstop2h 20m
Southwest
Deal found 7/27![Southwest logo]()
$157
This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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.
Mon 9/144:54 pm
SAN
- DEN
Nonstop2h 28m
Frontier
Mon 9/1410:50 pm
DEN
- SAN
1 stop19h 09m
Frontier
Deal found 7/28![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/288:59 pm
SAN
- DEN
1 stop5h 49m
Frontier
Wed 9/22:45 pm
DEN
- SAN
1 stop6h 30m
Frontier
Deal found 7/28![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/246:25 am
SAN
- DEN
2 stops10h 35m
Frontier
Mon 8/3112:47 pm
DEN
- SAN
1 stop8h 27m
Frontier
Deal found 7/27![Frontier logo]()
$161
This Frontier deal was found by Cheapflights users on 7/28. 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 9/96:25 am
SAN
- DEN
Nonstop2h 34m
Frontier
Mon 9/148:59 am
DEN
- SAN
1 stop10h 20m
Frontier
Deal found 7/28![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/206:25 am
SAN
- DEN
2 stops10h 35m
Frontier
Mon 8/248:31 pm
DEN
- SAN
1 stop4h 13m
Frontier
Deal found 7/28![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 9/43:45 pm
SAN
- DEN
Nonstop2h 35m
Frontier
Mon 9/76:45 am
DEN
- SAN
1 stop17h 59m
Frontier
Deal found 7/26![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/196:25 am
SAN
- DEN
Nonstop2h 38m
Frontier
Thu 8/2012:47 pm
DEN
- SAN
1 stop8h 17m
Frontier
Deal found 7/28![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/218:59 pm
SAN
- DEN
1 stop5h 49m
Frontier
Wed 8/2610:29 pm
DEN
- SAN
Nonstop2h 22m
Frontier
Deal found 7/28![Frontier logo]()
$167
This Southwest deal was found by Cheapflights users on 7/27. 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 8/271:10 pm
SAN
- COS
Nonstop2h 20m
Southwest
Tue 9/11:15 pm
COS
- SAN
1 stop10h 20m
Southwest
Deal found 7/27![Southwest logo]()
$167
This Southwest deal was found by Cheapflights users on 7/28. 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 9/1611:45 am
SAN
- DEN
Nonstop2h 25m
Southwest
Sat 9/191:35 pm
DEN
- SAN
2 stops6h 20m
Southwest
Deal found 7/28![Southwest logo]()
$168
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 July 29, 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 July 29, 2026.
This Southwest deal was found by Cheapflights users on 7/28. 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 9/101:10 pm
SAN
- COS
Nonstop2h 20m
Southwest
Sat 9/122:00 pm
COS
- SAN
1 stop5h 10m
Southwest
Deal found 7/28![Southwest logo]()
$167
This Delta deal was found by Cheapflights users on 7/24. 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.
Tue 9/295:01 pm
SAN
- DEN
1 stop4h 39m
Delta
Sat 10/310:45 am
DEN
- SAN
1 stop6h 11m
Delta
Deal found 7/24![Delta logo]()
$207
This American Airlines deal was found by Cheapflights users on 7/24. 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 10/176:15 am
SAN
- GJT
1 stop4h 21m
American Airlines
Wed 10/2112:01 pm
GJT
- SAN
1 stop4h 37m
American Airlines
Deal found 7/24![American Airlines logo]()
$245
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/512:33 pm
SAN
- DEN
Nonstop2h 33m
United Airlines
Mon 9/77:43 am
DEN
- SAN
Nonstop2h 22m
United Airlines
Deal found 7/28![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 7/27. 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 9/297:25 am
SAN
- DEN
1 stop4h 15m
Southwest
Tue 10/66:55 pm
DEN
- SAN
1 stop4h 10m
Southwest
Deal found 7/27![Southwest logo]()
$197
This Delta deal was found by Cheapflights users on 7/24. 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 9/2410:54 am
SAN
- DEN
1 stop6h 17m
Delta
Sat 10/31:00 pm
DEN
- SAN
1 stop3h 56m
Delta
Deal found 7/24![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 9/211:06 am
SAN
- DEN
1 stop6h 26m
Alaska Airlines
Tue 9/88:08 am
DEN
- SAN
2 stops11h 29m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$470
This Delta deal was found by Cheapflights users on 7/26. 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 10/2310:57 am
SAN
- DEN
1 stop6h 12m
Delta
Sun 10/256:35 am
DEN
- SAN
1 stop4h 42m
Delta
Deal found 7/26![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 7/25. 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 9/910:54 am
SAN
- DEN
1 stop6h 17m
Delta
Mon 9/147:55 pm
DEN
- SAN
1 stop4h 52m
Delta
Deal found 7/25![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 7/24. 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 10/1411:05 am
SAN
- COS
2 stops6h 45m
Southwest
Sat 10/175:25 pm
COS
- SAN
1 stop4h 40m
Southwest
Deal found 7/24![Southwest logo]()
$246
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/316:30 am
SAN
- HDN
1 stop4h 58m
United Airlines
Tue 9/11:30 pm
HDN
- SAN
1 stop4h 30m
United Airlines
Deal found 7/27![United Airlines logo]()
$272
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/176:30 am
SAN
- GJT
1 stop5h 08m
United Airlines
Tue 9/229:24 am
GJT
- SAN
1 stop4h 37m
United Airlines
Deal found 7/28![United Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 7/23. 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 8/219:00 am
SAN
- COS
1 stop5h 40m
Southwest
Wed 8/261:15 pm
COS
- SAN
2 stops6h 15m
Southwest
Deal found 7/23![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/18:45 am
SAN
- GJT
1 stop7h 41m
United Airlines
Sun 9/61:40 pm
GJT
- SAN
1 stop4h 20m
United Airlines
Deal found 7/28![United Airlines logo]()
$282
This United Airlines deal was found by Cheapflights users on 7/26. 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 9/216:30 am
SAN
- HDN
1 stop4h 58m
United Airlines
Fri 9/251:43 pm
HDN
- SAN
2 stops7h 25m
United Airlines
Deal found 7/26![United Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 7/26. 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 8/206:15 am
SAN
- GJT
2 stops11h 03m
Delta
Tue 8/257:41 am
GJT
- SAN
2 stops8h 29m
Delta
Deal found 7/26![Delta logo]()
$292
This Southwest deal was found by Cheapflights users on 7/28. 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 9/512:10 pm
SAN
- DEN
2 stops5h 25m
Southwest
Mon 9/76:40 am
DEN
- SAN
1 stop4h 40m
Southwest
Deal found 7/28![Southwest logo]()
$312
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/226:20 am
SAN
- DEN
1 stop7h 02m
United Airlines
Sat 8/227:25 pm
DEN
- SAN
1 stop6h 04m
United Airlines
Deal found 7/26![United Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 7/28. 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 9/165:01 pm
SAN
- GJT
1 stop3h 56m
Delta
Mon 9/216:53 pm
GJT
- SAN
1 stop5h 59m
Delta
Deal found 7/28![Delta logo]()
$302
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/292:24 pm
SAN
- DRO
2 stops6h 36m
United Airlines
Tue 9/11:34 pm
DRO
- SAN
2 stops7h 21m
United Airlines
Deal found 7/26![United Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 7/27. 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 8/166:35 am
SAN
- COS
1 stop4h 00m
Southwest
Fri 8/212:15 pm
COS
- SAN
Nonstop2h 20m
Southwest
Deal found 7/27![Southwest logo]()
$344
This Delta deal was found by Cheapflights users on 7/26. 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 9/173:00 pm
SAN
- GJT
2 stops5h 57m
Delta
Mon 9/216:53 pm
GJT
- SAN
1 stop5h 59m
Delta
Deal found 7/26![Delta logo]()
$324
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/196:30 am
SAN
- MTJ
1 stop5h 15m
United Airlines
Thu 9/247:15 am
MTJ
- SAN
2 stops11h 11m
United Airlines
Deal found 7/27![United Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 7/25. 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 9/53:15 pm
SAN
- COS
1 stop3h 55m
Southwest
Tue 9/81:15 pm
COS
- SAN
2 stops6h 15m
Southwest
Deal found 7/25![Southwest logo]()
$368
This Delta deal was found by Cheapflights users on 7/25. 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.
Sun 1/176:15 am
SAN
- ASE
1 stop6h 45m
Delta
Fri 1/2212:00 pm
ASE
- SAN
1 stop4h 20m
Delta
Deal found 7/25![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 7/24. 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 8/2012:33 pm
SAN
- GJT
1 stop7h 02m
United Airlines
Sat 8/227:00 am
GJT
- SAN
1 stop6h 41m
United Airlines
Deal found 7/24![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 7/27. 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.
Tue 8/253:00 pm
SAN
- ASE
1 stop4h 24m
Delta
Tue 9/112:03 pm
ASE
- SAN
1 stop4h 07m
Delta
Deal found 7/27![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 7/26. 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 9/76:30 am
SAN
- HDN
1 stop4h 58m
United Airlines
Sat 9/121:30 pm
HDN
- SAN
1 stop4h 40m
United Airlines
Deal found 7/26![United Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 7/25. 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 8/98:15 am
SAN
- COS
2 stops6h 45m
Southwest
Thu 8/1311:20 am
COS
- SAN
1 stop7h 15m
Southwest
Deal found 7/25![Southwest logo]()
$409
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/214:07 pm
SAN
- GJT
1 stop4h 52m
United Airlines
Sun 8/235:30 am
GJT
- SAN
2 stops7h 05m
United Airlines
Deal found 7/26![United Airlines logo]()
$324
Last-minute flights from San Diego to ColoradoDiscover last-minute flight deals from San Diego to Colorado. Data last updated July 29, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Colorado. Data last updated July 29, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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 8/64:28 pm
SAN
- DEN
1 stop4h 21m
Frontier
Fri 8/1410:29 pm
DEN
- SAN
Nonstop2h 22m
Frontier
Deal found 7/24![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/64:28 pm
SAN
- DEN
1 stop4h 21m
Frontier
Sat 8/229:15 am
DEN
- SAN
1 stop12h 00m
Frontier
Deal found 7/26![Frontier logo]()
$269
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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 8/74:28 pm
SAN
- DEN
1 stop4h 21m
Frontier
Sat 8/1510:29 pm
DEN
- SAN
Nonstop2h 22m
Frontier
Deal found 7/24![Frontier logo]()
$231
This Delta deal was found by Cheapflights users on 7/25. 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.
Tue 8/119:46 am
SAN
- COS
1 stop6h 50m
Delta
Tue 8/186:16 pm
COS
- SAN
1 stop6h 34m
Delta
Deal found 7/25![Delta logo]()
$259
This Southwest deal was found by Cheapflights users on 7/27. 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 8/146:40 pm
SAN
- COS
1 stop3h 55m
Southwest
Tue 8/1810:45 am
COS
- SAN
1 stop8h 35m
Southwest
Deal found 7/27![Southwest logo]()
$254
This Southwest deal was found by Cheapflights users on 7/23. 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 8/217:50 am
SAN
- COS
1 stop5h 25m
Southwest
Wed 8/264:15 pm
COS
- SAN
1 stop5h 15m
Southwest
Deal found 7/23![Southwest logo]()
$252
This Southwest deal was found by Cheapflights users on 7/27. 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 8/2612:20 pm
SAN
- COS
1 stop6h 35m
Southwest
Wed 9/26:55 am
COS
- SAN
1 stop4h 50m
Southwest
Deal found 7/27![Southwest logo]()
$177
This Southwest deal was found by Cheapflights users on 7/27. 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 8/271:10 pm
SAN
- COS
Nonstop2h 20m
Southwest
Tue 9/11:15 pm
COS
- SAN
1 stop10h 20m
Southwest
Deal found 7/27![Southwest logo]()
$167
This United Airlines deal was found by Cheapflights users on 7/27. 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 55m
United Airlines
Wed 9/25:30 am
COS
- SAN
1 stop4h 35m
United Airlines
Deal found 7/27![United Airlines logo]()
$230
This Southwest deal was found by Cheapflights users on 7/26. 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 8/281:50 pm
SAN
- HDN
1 stop4h 25m
Southwest
Wed 9/29:00 am
HDN
- SAN
1 stop6h 55m
Southwest
Deal found 7/26![Southwest logo]()
$197
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/285:00 pm
SAN
- COS
2 stops5h 55m
United Airlines
Sun 8/308:38 am
COS
- SAN
1 stop5h 03m
United Airlines
Deal found 7/27![United Airlines logo]()
$262
This Southwest deal was found by Cheapflights users on 7/27. 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 8/296:20 am
SAN
- COS
2 stops8h 10m
Southwest
Sat 9/57:00 am
COS
- SAN
2 stops6h 40m
Southwest
Deal found 7/27![Southwest logo]()
$187
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 July 29, 2026.
Search for one-way flight options from San Diego to Colorado. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
This Southwest deal was found by Cheapflights users on 7/27. 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 8/271:10 pm
SAN
- COS
Nonstop2h 20m
Southwest
Deal found 7/27![Southwest logo]()
$79
This Southwest deal was found by Cheapflights users on 7/27. 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 9/91:40 pm
SAN
- DEN
Nonstop2h 25m
Southwest
Deal found 7/27![Southwest logo]()
$89
This Southwest deal was found by Cheapflights users on 7/25. 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 8/245:05 pm
SAN
- COS
1 stop5h 30m
Southwest
Deal found 7/25![Southwest logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/246:25 am
SAN
- DEN
2 stops10h 35m
Frontier
Deal found 7/27![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/206:25 am
SAN
- DEN
2 stops14h 16m
Frontier
Deal found 7/25![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/296:25 am
SAN
- DEN
2 stops14h 16m
Frontier
Deal found 7/27![Frontier logo]()
$93
This Southwest deal was found by Cheapflights users on 7/27. 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 8/261:40 pm
SAN
- HDN
1 stop4h 40m
Southwest
Deal found 7/27![Southwest logo]()
$94
This Frontier deal was found by Cheapflights users on 7/25. 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 8/223:45 pm
SAN
- DEN
Nonstop2h 35m
Frontier
Deal found 7/25![Frontier logo]()
$94
This Delta deal was found by Cheapflights users on 7/27. 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.
Tue 8/255:01 pm
SAN
- COS
1 stop4h 27m
Delta
Deal found 7/27![Delta logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Sun 8/236:25 am
SAN
- DEN
1 stop28h 08m
Frontier
Deal found 7/25![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/187:04 pm
SAN
- DEN
1 stop13h 39m
Frontier
Deal found 7/27![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 7/28. 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.
Fri 8/213:45 pm
SAN
- DEN
Nonstop2h 35m
Frontier
Deal found 7/28![Frontier logo]()
$98
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 July 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (Kiwi.com) |
One-way from | $79 (Southwest) |
Popular in | June |
Cheapest in | February |
Average price | $262 |
Good round-trip deal | $262 or less |
Good one-way deal | $159 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 July 29, 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
Thu 9/10
1:10 pm-4:30 pm
Nonstop2h 20m
Colorado Springs
Sat 9/12
2:00 pm-6:10 pm
1 stop5h 10m
$167
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Tue 9/29
7:25 am-12:40 pm
1 stop4h 15m
Denver Intl
Tue 10/6
6:55 pm-10:05 pm
1 stop4h 10m
$197
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Tue 9/29
5:01 pm-10:40 pm
1 stop4h 39m
Denver Intl
Sat 10/3
10:45 am-3:56 pm
1 stop6h 11m
$207
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Thu 9/24
10:54 am-6:11 pm
1 stop6h 17m
Denver Intl
Sat 10/3
1:00 pm-3:56 pm
1 stop3h 56m
$217
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Fri 10/23
10:57 am-6:09 pm
1 stop6h 12m
Denver Intl
Sun 10/25
6:35 am-10:17 am
1 stop4h 42m
$217
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Wed 9/9
10:54 am-6:11 pm
1 stop6h 17m
Denver Intl
Mon 9/14
7:55 pm-11:47 pm
1 stop4h 52m
$217
San DiegoGrand Junction
SAN - GJT
SANGJT
San Diego
Sat 10/17
6:15 am-11:36 am
1 stop4h 21m
Grand Junction Regnl
Wed 10/21
12:01 pm-3:38 pm
1 stop4h 37m
$245
San DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Wed 10/14
11:05 am-6:50 pm
2 stops6h 45m
Colorado Springs
Sat 10/17
5:25 pm-9:05 pm
1 stop4h 40m
$246
Quickest round-trip
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sat 9/5
12:33 pm-4:06 pm
Nonstop2h 33m
Denver Intl
Mon 9/7
7:43 am-9:05 am
Nonstop2h 22m
$257
San DiegoColorado Springs
SAN - COS
SANCOS
San Diego
Fri 8/21
9:00 am-3:40 pm
1 stop5h 40m
Colorado Springs
Wed 8/26
1:15 pm-6:30 pm
2 stops6h 15m
$257
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-COS
SAN-DEN
SAN-HDN
SAN-ASE
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-COS
SAN-DEN
SAN-HDN
SAN-ASE
What is the cheapest month to book a flight from San Diego to Colorado?
Currently, February is the cheapest month in which you can book a flight from San Diego to Colorado (average of $160). Flying from San Diego to Colorado in June is currently the most expensive (average of $303). 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 July 29, 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 44% 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 July 29, 2026.
The most flights from SAN to USCO are scheduled on a Monday (34 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).
How much does it cost to fly round-trip from San Diego to Colorado?
Airfare is below average for this route at the moment.
San Diego to Colorado flights typically cost between $159 and $270 in August.The cheapest round-trip price found within the last 5 days was $157 on Frontier (Aug 18-Aug 19).
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 July 25, 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. Monday 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 July 29, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, 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
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Overall
8.0
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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 July 29, 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 July 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$47 | Average$142 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$58 | Average$137 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$115 | Average$382 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$409 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$370 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$228 | Average$403 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$243 | Average$445 | FlexibilityNo cancel fee | On-time71% |