$78+ Cheap flights from Colorado to San Diego (SAN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAN
Nov 23 — Nov 301
Round-trip
1 adult, Economy
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Find cheap flights from Colorado to San Diego 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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Colorado to San Diego
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Cheapest flights from Colorado to San DiegoExplore the most affordable flight options available from Colorado to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
Explore the most affordable flight options available from Colorado to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
This Gotogate deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:29 pm -
Nonstop2h 28m
Wed 11/256:30 am -
Nonstop2h 34m
Deal found 10/19![Frontier logo]()
$126
This Trip.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/1310:29 pm -
Nonstop2h 28m
Mon 11/166:25 am -
Nonstop2h 34m
Deal found 10/19![Frontier logo]()
$127
This Expedia deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:29 pm -
Nonstop2h 28m
Sun 11/226:30 am -
Nonstop2h 34m
Deal found 10/21![Frontier logo]()
$128
This Frontier deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/129:19 pm -
1 stop12h 18m
Sat 11/146:25 am -
Nonstop2h 34m
Deal found 10/20![Frontier logo]()
$129
This Cheapflightsfares deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/128:49 am -
Nonstop2h 30m
Wed 12/169:58 am -
1 stop6h 47m
Deal found 10/22![Frontier logo]()
$130
This Priceline deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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.
Tue 11/107:00 am -
1 stop4h 11m
Tue 11/104:53 pm -
Nonstop2h 32m
Deal found 10/20![Frontier logo]()
$131
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 12/37:46 am -
1 stop11h 24m
Fri 12/411:16 am -
Nonstop2h 42m
Deal found 10/21![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/1310:29 pm -
Nonstop2h 28m
Wed 11/256:30 am -
Nonstop2h 34m
Deal found 10/20![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/182:28 pm -
Nonstop2h 30m
Sun 11/226:30 am -
Nonstop2h 34m
Deal found 10/22![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:29 pm -
Nonstop2h 28m
Sun 11/226:30 am -
Nonstop2h 34m
Deal found 10/23![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/2110:29 pm -
Nonstop2h 28m
Fri 11/276:30 am -
Nonstop2h 34m
Deal found 10/21![Frontier logo]()
$137
This Delta deal was found by Cheapflights users on 10/24. 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 11/106:08 pm -
1 stop6h 45m
Thu 11/195:13 pm -
1 stop4h 09m
Deal found 10/24![Delta logo]()
$192
Best flights from Colorado to San DiegoDiscover carefully curated flight deals from Colorado to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
Discover carefully curated flight deals from Colorado to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
This Southwest deal was found by Cheapflights users on 10/24. 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.
Tue 11/174:25 pm -
Nonstop2h 25m
Sat 11/219:15 pm -
Nonstop2h 25m
Deal found 10/24![Southwest logo]()
$157
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/136:08 pm -
1 stop6h 45m
Thu 11/199:43 am -
1 stop6h 45m
Deal found 10/21![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/145:00 am -
1 stop6h 12m
Sat 11/142:30 pm -
1 stop5h 57m
Deal found 10/23![United Airlines logo]()
$212
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2311:14 am -
Nonstop2h 33m
Mon 11/238:24 pm -
Nonstop2h 35m
Deal found 10/23![Alaska Airlines logo]()
$213
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 1/131:35 pm -
1 stop9h 25m
Sun 1/1712:00 pm -
1 stop6h 45m
Deal found 10/22![Southwest logo]()
$197
This American Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 10/2911:44 am -
1 stop4h 48m
Sun 11/14:30 pm -
1 stop5h 29m
Deal found 10/22![American Airlines logo]()
$438
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/21:26 pm -
1 stop4h 49m
Sat 12/512:39 pm -
1 stop7h 00m
Deal found 10/22![United Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/106:30 am -
1 stop4h 10m
Tue 11/1012:35 pm -
2 stops8h 10m
Deal found 10/19![Southwest logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/66:00 am -
1 stop11h 08m
Tue 11/104:53 pm -
1 stop27h 57m
Deal found 10/22![Multiple Airlines logo]()
$492
This Southwest deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/164:15 pm -
1 stop6h 40m
Thu 11/196:15 am -
1 stop4h 00m
Deal found 10/19![Southwest logo]()
$225
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/196:00 am -
2 stops6h 31m
Sun 11/226:30 pm -
1 stop4h 29m
Deal found 10/20![United Airlines logo]()
$254
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 1/126:55 am -
2 stops7h 00m
Sat 1/168:50 am -
2 stops6h 15m
Deal found 10/21![Southwest logo]()
$226
This Delta deal was found by Cheapflights users on 10/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:05 am -
1 stop4h 20m
Sun 11/224:11 pm -
1 stop6h 48m
Deal found 10/23![Delta logo]()
$327
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Tue 11/171:27 pm -
2 stops10h 00m
Mon 11/236:45 am -
1 stop4h 40m
Deal found 10/24![United Airlines logo]()
$285
This Southwest deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 1/15:35 am -
1 stop4h 10m
Thu 1/710:35 am -
1 stop4h 50m
Deal found 10/19![Southwest logo]()
$239
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:40 am -
1 stop7h 15m
Mon 11/234:18 pm -
1 stop6h 41m
Deal found 10/23![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/111:16 pm -
2 stops10h 38m
Sun 11/156:30 am -
1 stop5h 09m
Deal found 10/20![Delta logo]()
$364
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/1210:05 am -
Nonstop2h 20m
Sun 11/156:30 pm -
1 stop4h 20m
Deal found 10/20![Southwest logo]()
$269
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 1/217:10 pm -
Nonstop2h 32m
Wed 1/278:40 am -
Nonstop2h 31m
Deal found 10/22![United Airlines logo]()
$313
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 12/238:25 pm -
1 stop4h 00m
Sat 12/264:05 pm -
Nonstop2h 20m
Deal found 10/21![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/195:30 am -
1 stop4h 40m
Wed 12/26:45 am -
1 stop4h 42m
Deal found 10/20![United Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/2611:59 am -
1 stop4h 43m
Sun 11/296:25 am -
1 stop4h 01m
Deal found 10/20![American Airlines logo]()
$534
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 12/288:25 pm -
1 stop4h 25m
Mon 1/47:00 pm -
1 stop3h 50m
Deal found 10/21![Southwest logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/46:00 am -
2 stops38h 35m
Sun 11/86:25 am -
1 stop8h 00m
Deal found 10/20![Multiple Airlines logo]()
$562
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Sat 12/53:11 pm -
1 stop6h 30m
Fri 12/116:45 am -
1 stop4h 42m
Deal found 10/24![United Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 12/235:45 pm -
1 stop4h 05m
Sat 12/266:50 pm -
1 stop4h 50m
Deal found 10/19![Southwest logo]()
$286
This American Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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.
Mon 12/75:06 pm -
1 stop7h 50m
Thu 12/106:15 am -
1 stop9h 21m
Deal found 10/19![American Airlines logo]()
$576
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/21:26 pm -
1 stop4h 49m
Fri 12/412:39 pm -
1 stop7h 00m
Deal found 10/22![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 10/23. 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.
Thu 11/58:30 am -
1 stop4h 45m
Sat 11/73:00 pm -
1 stop4h 45m
Deal found 10/23![Southwest logo]()
$288
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 12/231:33 pm -
2 stops11h 18m
Thu 1/712:39 pm -
1 stop7h 00m
Deal found 10/20![United Airlines logo]()
$342
Last-minute flights from Colorado to San DiegoDiscover last-minute flight deals from Colorado to San Diego. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to San Diego. Data last updated October 24, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 10/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:29 pm -
Nonstop2h 28m
Wed 11/1111:06 am -
1 stop5h 32m
Deal found 10/23![Frontier logo]()
$130
This Priceline deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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.
Tue 11/107:00 am -
1 stop4h 11m
Tue 11/104:53 pm -
Nonstop2h 32m
Deal found 10/20![Frontier logo]()
$131
This Cheapflightsfares deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/107:00 am -
1 stop4h 11m
Thu 11/194:53 pm -
Nonstop2h 32m
Deal found 10/21![Frontier logo]()
$132
This Delta deal was found by Cheapflights users on 10/24. 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 11/106:08 pm -
1 stop6h 45m
Thu 11/195:13 pm -
1 stop4h 09m
Deal found 10/24![Delta logo]()
$192
This Frontier deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/129:19 pm -
1 stop12h 18m
Sat 11/146:25 am -
Nonstop2h 34m
Deal found 10/20![Frontier logo]()
$129
This Trip.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/1310:29 pm -
Nonstop2h 28m
Mon 11/166:25 am -
Nonstop2h 34m
Deal found 10/19![Frontier logo]()
$127
This Super.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/1310:29 pm -
Nonstop2h 28m
Wed 11/256:30 am -
Nonstop2h 34m
Deal found 10/20![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/182:28 pm -
Nonstop2h 30m
Sun 11/226:30 am -
Nonstop2h 34m
Deal found 10/22![Frontier logo]()
$134
This Expedia deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:29 pm -
Nonstop2h 28m
Sun 11/226:30 am -
Nonstop2h 34m
Deal found 10/21![Frontier logo]()
$128
This Gotogate deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:29 pm -
Nonstop2h 28m
Wed 11/256:30 am -
Nonstop2h 34m
Deal found 10/19![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:29 pm -
Nonstop2h 28m
Sun 11/226:30 am -
Nonstop2h 34m
Deal found 10/23![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/2110:29 pm -
Nonstop2h 28m
Fri 11/276:30 am -
Nonstop2h 34m
Deal found 10/21![Frontier logo]()
$137
One-way flights from Colorado to San DiegoSearch for one-way flight options from Colorado to San Diego. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
Search for one-way flight options from Colorado to San Diego. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
This Super.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 12/97:39 am -
1 stop11h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$78
This Cheapflightsfares deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 12/167:39 am -
1 stop11h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 12/2310:29 pm -
Nonstop2h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/1210:29 pm -
Nonstop2h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$82
This deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2510:29 pm -
Nonstop2h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$83
This Super.com deal was found by Cheapflights users on 10/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:50 pm -
1 stop10h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$84
This Orbitz deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/178:35 am -
1 stop11h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:46 pm -
1 stop16h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$86
This Super.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/91:05 pm -
1 stop7h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Frontier logo]()
$87
This American Airlines deal was found by Cheapflights users on 10/24. 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.
Thu 11/266:40 am -
1 stop6h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![American Airlines logo]()
$89
This Super.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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.
Sat 11/217:50 pm -
1 stop13h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$90
This Southwest deal was found by Cheapflights users on 10/23. 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.
Tue 11/1010:15 am -
1 stop3h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Southwest logo]()
$94
Find flight deals from Colorado to San Diego
Keep the following information in mind while searching for Colorado to San Diego flight deals. Data was last updated October 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $126 (Gotogate) |
One-way from | $78 (Super.com) |
Popular in | June |
Cheapest in | February |
Average price | $222 |
Good round-trip deal | $210 or less |
Good one-way deal | $141 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Colorado to San Diego 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 7,457,451 searches. Data last updated October 24, 2026.
Use the filters below to find and compare flights from Colorado to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Wed 12/9
8:20 am-11:25 am
1 stop4h 05m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$84
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Tue 12/8
8:50 am-1:00 pm
2 stops5h 10m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$89
Colorado SpringsSan Diego
COS Colorado Springs - SAN San Diego
COSSAN
Colorado Springs
Fri 2/5
5:55 pm-11:47 pm
1 stop6h 52m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
Colorado SpringsSan Diego
COS Colorado Springs - SAN San Diego
COSSAN
Colorado Springs
Tue 12/1
5:35 pm-8:40 pm
1 stop4h 05m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
Colorado SpringsSan Diego
COS Colorado Springs - SAN San Diego
COSSAN
Colorado Springs
Thu 11/19
6:00 am-11:31 am
2 stops6h 31m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$104
Colorado SpringsSan Diego
COS Colorado Springs - SAN San Diego
COSSAN
Colorado Springs
Tue 12/15
11:50 am-5:25 pm
2 stops6h 35m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$104
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Sat 12/19
7:00 am-8:30 am
Nonstop2h 30m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$107
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Thu 11/12
7:15 am-8:45 am
Nonstop2h 30m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$107
HaydenSan Diego
HDN Hayden Yampa Valley - SAN San Diego
HDNSAN
Hayden Yampa Valley
Tue 12/8
8:40 am-1:30 pm
1 stop5h 50m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$107
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Sun 11/8
7:15 am-8:45 am
Nonstop2h 30m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Colorado to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Colorado with our price prediction graph.
DEN-SAN
COS-SAN
ASE-SAN
HDN-SAN
DRO-SAN
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 Colorado to San Diego
USCO-SAN
DEN-SAN
COS-SAN
ASE-SAN
HDN-SAN
What is the cheapest month to book a flight from Colorado to San Diego?
Currently, February is the cheapest month in which you can book a flight from Colorado to San Diego (average of $152). Flying from Colorado to San Diego in June is currently the most expensive (average of $284). 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 CO to SAN?
Find hourly flight availability from Colorado to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 24, 2026.
It’s optimal to fly from Colorado to San Diego in the evening. By choosing this option you can save up to 57% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Colorado to San Diego
Explore weekly flight availability from Colorado to San Diego. 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 October 24, 2026.
The most flights from USCO to SAN are scheduled on a Friday (32 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).
How much does it cost to fly round-trip from Colorado to San Diego?
Airfare is below average for this route at the moment.
Colorado to San Diego flights typically cost between $143 and $312 in November.The cheapest round-trip price found within the last 5 days was $126 on Frontier (Nov 21-Nov 25).
How far ahead should I book a flight from Colorado to San Diego?
To ensure you get the cheapest price possible for a flight from Colorado to San Diego, you should look to book at least 90 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 Colorado to San Diego?
Use this chart to determine the cheapest time to fly round-trip from Colorado to San Diego. Price data was last updated on October 24, 2026.
Travelers seeking maximum savings on their Colorado to San Diego flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Colorado to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
National City
Chula Vista
San Ysidro
Poway
Coronado
La Mesa
Julian
Santee
Lemon Grove
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Alternative routes for Colorado to San Diego
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Complete your trip
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Search flights from Colorado to San Diego by cabin class
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Colorado and San Diego flights
Browse other Colorado and San Diego flight options. Last updated on October 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
Colorado to San Diego flights
Consider these flights traveling from Colorado to San Diego.
Top 8 airlines flying from Colorado to San Diego
Discover the top 8 airlines that operate flights from Colorado to San Diego. 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 7,457,451 searches. Data last updated October 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$50 | Average$158 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$80 | Average$135 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$117 | Average$307 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$238 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$362 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$236 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$186 | Average$303 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$228 | Average$364 | FlexibilityNo cancel fee | On-time71% |