$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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DEN
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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Find cheap flights from San Diego to Colorado with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 August 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 August 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 8/9. 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.
Sat 9/53:45 pm -
Nonstop2h 35m
Tue 9/810:29 pm -
Nonstop2h 22m
Deal found 8/9![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Tue 9/16:25 am -
Nonstop2h 38m
Sat 9/56:45 am -
1 stop14h 30m
Deal found 8/9![Frontier logo]()
$122
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:25 am -
Nonstop2h 38m
Sat 9/1210:29 pm -
Nonstop2h 22m
Deal found 8/10![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/44:54 pm -
Nonstop2h 28m
Tue 10/62:29 pm -
Nonstop2h 30m
Deal found 8/7![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Thu 8/273:45 pm -
Nonstop2h 35m
Mon 8/318:31 pm -
1 stop4h 13m
Deal found 8/6![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:25 am -
Nonstop2h 34m
Wed 9/1610:50 pm -
1 stop22h 27m
Deal found 8/7![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:45 pm -
Nonstop2h 35m
Thu 9/36:10 am -
1 stop15h 04m
Deal found 8/7![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Fri 10/96:25 am -
Nonstop2h 33m
Sun 10/116:10 am -
1 stop7h 30m
Deal found 8/9![Frontier logo]()
$130
This Super.com deal was found by Cheapflights users on 8/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:45 pm -
Nonstop2h 35m
Wed 9/910:29 pm -
Nonstop2h 22m
Deal found 8/10![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Sat 9/56:25 am -
1 stop12h 21m
Sat 9/122:28 pm -
Nonstop2h 30m
Deal found 8/9![Frontier logo]()
$132
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:45 pm -
Nonstop2h 35m
Tue 9/87:40 am -
Nonstop2h 25m
Deal found 8/10![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:25 am -
1 stop12h 21m
Sun 9/1310:29 pm -
Nonstop2h 22m
Deal found 8/7![Frontier logo]()
$134
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 August 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 August 10, 2026.
This Southwest deal was found by Cheapflights users on 8/5. 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 10/224:20 pm -
Nonstop2h 10m
Mon 10/2610:50 am -
Nonstop2h 25m
Deal found 8/5![Southwest logo]()
$205
This Delta deal was found by Cheapflights users on 8/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/55:00 pm -
1 stop4h 30m
Tue 1/125:55 pm -
1 stop6h 52m
Deal found 8/6![Delta logo]()
$215
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/174:11 pm -
Nonstop2h 29m
Sun 9/207:43 am -
Nonstop2h 22m
Deal found 8/9![United Airlines logo]()
$217
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/84:29 pm -
1 stop4h 02m
Sun 10/116:00 am -
1 stop4h 07m
Deal found 8/8![American Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 8/9. 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.
Sat 9/51:50 pm -
1 stop5h 20m
Fri 9/112:15 pm -
Nonstop2h 20m
Deal found 8/9![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 8/7. 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.
Wed 11/111:35 pm -
1 stop5h 01m
Sun 11/155:25 am -
1 stop4h 23m
Deal found 8/7![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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.
Tue 1/122:12 pm -
2 stops25h 34m
Sat 1/166:26 pm -
Nonstop2h 43m
Deal found 8/6![Alaska Airlines logo]()
$514
This United Airlines deal was found by Cheapflights users on 8/7. 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.
Mon 9/216:15 am -
2 stops7h 14m
Fri 9/251:43 pm -
2 stops11h 48m
Deal found 8/7![United Airlines logo]()
$258
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:57 am -
1 stop6h 12m
Sun 11/16:35 am -
1 stop4h 42m
Deal found 8/5![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/9. 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.
Sun 11/84:40 pm -
Nonstop2h 20m
Sat 11/146:25 am -
2 stops8h 55m
Deal found 8/9![Southwest logo]()
$252
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/2712:33 pm -
1 stop4h 20m
Tue 9/111:30 am -
2 stops6h 56m
Deal found 8/7![United Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 8/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:00 pm -
2 stops5h 57m
Wed 9/237:41 am -
2 stops8h 20m
Deal found 8/6![Delta logo]()
$256
This Southwest deal was found by Cheapflights users on 8/9. 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.
Fri 9/47:50 pm -
Nonstop2h 25m
Sun 9/68:50 am -
Nonstop2h 20m
Deal found 8/9![Southwest logo]()
$261
This United Airlines deal was found by Cheapflights users on 8/9. 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.
Wed 9/234:11 pm -
Nonstop2h 29m
Sun 9/277:43 am -
Nonstop2h 22m
Deal found 8/9![United Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 8/7. 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.
Thu 8/273:20 pm -
1 stop5h 30m
Tue 9/15:40 pm -
1 stop4h 15m
Deal found 8/7![Southwest logo]()
$273
This Delta deal was found by Cheapflights users on 8/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:00 pm -
2 stops5h 57m
Mon 9/216:53 pm -
1 stop5h 59m
Deal found 8/6![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/511:17 am -
2 stops9h 39m
Fri 9/1111:30 am -
2 stops6h 56m
Deal found 8/9![United Airlines logo]()
$288
This Southwest deal was found by Cheapflights users on 8/9. 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.
Fri 9/255:30 pm -
1 stop4h 35m
Sun 9/276:15 am -
1 stop4h 55m
Deal found 8/9![Southwest logo]()
$277
This United Airlines deal was found by Cheapflights users on 8/5. 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 10/156:50 pm -
1 stop4h 09m
Mon 10/195:08 pm -
1 stop6h 19m
Deal found 8/5![United Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 8/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:36 pm -
1 stop3h 42m
Sun 9/206:53 pm -
1 stop5h 59m
Deal found 8/6![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 8/5. 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 8/271:10 pm -
Nonstop2h 20m
Sun 8/303:30 pm -
Nonstop2h 20m
Deal found 8/5![Southwest logo]()
$299
This United Airlines deal was found by Cheapflights users on 8/7. 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.
Sat 9/264:11 pm -
1 stop5h 04m
Fri 10/25:15 am -
2 stops7h 20m
Deal found 8/7![United Airlines logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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.
Fri 10/98:19 pm -
Nonstop2h 40m
Mon 10/126:59 pm -
Nonstop2h 35m
Deal found 8/6![Alaska Airlines logo]()
$517
This Delta deal was found by Cheapflights users on 8/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/285:01 pm -
1 stop3h 55m
Thu 9/36:53 pm -
2 stops6h 01m
Deal found 8/6![Delta logo]()
$324
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Sun 8/306:30 am -
1 stop5h 02m
Sun 9/61:34 pm -
1 stop4h 26m
Deal found 8/6![United Airlines logo]()
$308
This American Airlines deal was found by Cheapflights users on 8/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:17 am -
1 stop6h 42m
Mon 10/127:53 am -
1 stop7h 24m
Deal found 8/9![American Airlines logo]()
$547
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:15 am -
1 stop9h 55m
Thu 8/278:22 am -
2 stops11h 38m
Deal found 8/7![Alaska Airlines logo]()
$546
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/36:30 am -
1 stop5h 02m
Sun 9/65:15 am -
2 stops9h 29m
Deal found 8/9![United Airlines logo]()
$314
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:25 am -
2 stops11h 17m
Wed 9/27:50 am -
2 stops8h 36m
Deal found 8/8![American Airlines logo]()
$558
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/176:15 am -
1 stop6h 45m
Fri 1/2212:00 pm -
1 stop4h 20m
Deal found 8/5![Delta logo]()
$349
Last-minute flights from San Diego to ColoradoDiscover last-minute flight deals from San Diego to Colorado. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Colorado. Data last updated August 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Thu 8/273:45 pm -
Nonstop2h 35m
Mon 8/318:31 pm -
1 stop4h 13m
Deal found 8/6![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:45 pm -
Nonstop2h 35m
Thu 9/36:10 am -
1 stop15h 04m
Deal found 8/7![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Tue 9/16:25 am -
Nonstop2h 38m
Sat 9/56:45 am -
1 stop14h 30m
Deal found 8/9![Frontier logo]()
$122
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:25 am -
Nonstop2h 38m
Sat 9/1210:29 pm -
Nonstop2h 22m
Deal found 8/10![Frontier logo]()
$123
This Super.com deal was found by Cheapflights users on 8/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:45 pm -
Nonstop2h 35m
Wed 9/910:29 pm -
Nonstop2h 22m
Deal found 8/10![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 8/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/33:45 pm -
Nonstop2h 35m
Sat 9/1210:29 pm -
Nonstop2h 22m
Deal found 8/10![Frontier logo]()
$133
This Cheapflightsfares deal was found by Cheapflights users on 8/9. 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.
Sat 9/53:45 pm -
Nonstop2h 35m
Tue 9/810:29 pm -
Nonstop2h 22m
Deal found 8/9![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Sat 9/56:25 am -
1 stop12h 21m
Sat 9/122:28 pm -
Nonstop2h 30m
Deal found 8/9![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:25 am -
1 stop12h 21m
Sun 9/1310:29 pm -
Nonstop2h 22m
Deal found 8/7![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Fri 9/114:54 pm -
Nonstop2h 28m
Mon 9/143:18 pm -
1 stop19h 25m
Deal found 8/9![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:25 am -
Nonstop2h 34m
Wed 9/1610:50 pm -
1 stop22h 27m
Deal found 8/7![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Wed 9/305:54 pm -
1 stop15h 13m
Mon 10/52:28 pm -
Nonstop2h 30m
Deal found 8/6![Frontier logo]()
$124
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 August 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 August 10, 2026.
This Southwest deal was found by Cheapflights users on 8/6. 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.
Fri 9/111:10 pm -
Nonstop2h 20m
Deal found 8/6![Southwest logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 8/6. 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.
Tue 10/67:04 pm -
1 stop13h 39m
Deal found 8/6![Frontier logo]()
$89
This Southwest deal was found by Cheapflights users on 8/6. 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.
Sat 9/53:15 pm -
1 stop3h 55m
Deal found 8/6![Southwest logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:48 pm -
1 stop6h 04m
Deal found 8/7![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 8/9. 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.
Fri 11/69:57 am -
1 stop4h 36m
Deal found 8/9![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 8/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:25 am -
Nonstop2h 34m
Deal found 8/10![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 8/6. 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.
Sun 9/274:54 pm -
Nonstop2h 28m
Deal found 8/6![Frontier logo]()
$93
This Southwest deal was found by Cheapflights users on 8/9. 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 9/221:45 pm -
1 stop5h 15m
Deal found 8/9![Southwest logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:25 am -
2 stops17h 19m
Deal found 8/5![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:25 am -
1 stop28h 08m
Deal found 8/5![Frontier logo]()
$95
This WAYA deal was found by Cheapflights users on 8/7. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:25 am -
1 stop6h 52m
Deal found 8/7![Frontier logo]()
$96
This Trip.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/219:03 pm -
1 stop12h 04m
Deal found 8/7![Frontier logo]()
$97
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 August 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $121 (Cheapflightsfares) |
One-way from | $79 (Southwest) |
Popular in | June |
Cheapest in | February |
Average price | $238 |
Good round-trip deal | $258 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 August 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
Quickest round-trip
San DiegoColorado Springs
SAN San Diego - COS Colorado Springs
SANCOS
San Diego
Thu 10/22
4:20 pm-7:30 pm
Nonstop2h 10m
Colorado Springs
Mon 10/26
10:50 am-12:15 pm
Nonstop2h 25m
$205
San DiegoColorado Springs
SAN San Diego - COS Colorado Springs
SANCOS
San Diego
Sat 9/5
1:50 pm-8:10 pm
1 stop5h 20m
Colorado Springs
Fri 9/11
2:15 pm-3:35 pm
Nonstop2h 20m
$207
San DiegoColorado Springs
SAN San Diego - COS Colorado Springs
SANCOS
San Diego
Tue 1/5
5:00 pm-10:30 pm
1 stop4h 30m
Colorado Springs
Tue 1/12
5:55 pm-11:47 pm
1 stop6h 52m
$215
San DiegoDenver
SAN San Diego - DEN Denver Intl
SANDEN
San Diego
Thu 9/17
4:11 pm-7:40 pm
Nonstop2h 29m
Denver Intl
Sun 9/20
7:43 am-9:05 am
Nonstop2h 22m
$217
San DiegoDenver
SAN San Diego - DEN Denver Intl
SANDEN
San Diego
Wed 11/11
1:35 pm-7:36 pm
1 stop5h 01m
Denver Intl
Sun 11/15
5:25 am-8:48 am
1 stop4h 23m
$227
San DiegoDenver
SAN San Diego - DEN Denver Intl
SANDEN
San Diego
Fri 10/30
10:57 am-6:09 pm
1 stop6h 12m
Denver Intl
Sun 11/1
6:35 am-10:17 am
1 stop4h 42m
$237
San DiegoColorado Springs
SAN San Diego - COS Colorado Springs
SANCOS
San Diego
Sun 11/8
4:40 pm-8:00 pm
Nonstop2h 20m
Colorado Springs
Sat 11/14
6:25 am-2:20 pm
2 stops8h 55m
$252
San DiegoGrand Junction
SAN San Diego - GJT Grand Junction Regnl
SANGJT
San Diego
Tue 9/15
3:00 pm-9:57 pm
2 stops5h 57m
Grand Junction Regnl
Wed 9/23
7:41 am-3:01 pm
2 stops8h 20m
$256
San DiegoHayden
SAN San Diego - HDN Hayden Yampa Valley
SANHDN
San Diego
Mon 9/21
6:15 am-2:29 pm
2 stops7h 14m
Hayden Yampa Valley
Fri 9/25
1:43 pm-12:31 am
2 stops11h 48m
$258
San DiegoDenver
SAN San Diego - DEN Denver Intl
SANDEN
San Diego
Fri 9/4
7:50 pm-11:15 pm
Nonstop2h 25m
Denver Intl
Sun 9/6
8:50 am-10:10 am
Nonstop2h 20m
$261
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-EGE
SAN-HDN
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-EGE
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 $167). Flying from San Diego to Colorado in June is currently the most expensive (average of $304). 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 August 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 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 August 10, 2026.
The most flights from SAN to USCO are scheduled on a Friday (34 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 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 $176 and $286 in September.The cheapest round-trip price found within the last 5 days was $121 on Frontier (Sep 5-Sep 8).
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 August 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. 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 August 10, 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.
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
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
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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 August 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 August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$47 | Average$141 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$58 | Average$137 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$115 | Average$383 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$412 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$373 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$228 | Average$403 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$243 | Average$450 | FlexibilityNo cancel fee | On-time71% |