$51+ Cheap flights from Denver to San Diego (DEN - SAN)
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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAN
Apr 14 — Apr 211
Round-trip
1 adult, Economy
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Find cheap flights from Denver 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Denver Intl to San Diego are usually found in February or January, booked 83 days in advance, depart on a Thursday or Friday and return on a Friday
Cheap flight deals from Denver to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Denver to San DiegoExplore the most affordable flight options available from Denver to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 15, 2026.
Explore the most affordable flight options available from Denver to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:15 am
DEN
- SAN
Nonstop2h 37m
Frontier
Sat 4/116:25 am
SAN
- DEN
Nonstop2h 40m
Frontier
Deal found 3/11![Frontier logo]()
$71
This Cheapflightsfares deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1910:29 pm
DEN
- SAN
Nonstop2h 21m
Frontier
Thu 5/216:25 am
SAN
- DEN
Nonstop2h 36m
Frontier
Deal found 3/12![Frontier logo]()
$72
This Booking.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:00 am
DEN
- SAN
Nonstop2h 34m
Frontier
Sun 5/36:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/12![Frontier logo]()
$73
This Trip.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
DEN
- SAN
Nonstop2h 34m
Frontier
Mon 5/46:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/12![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/259:30 pm
DEN
- SAN
Nonstop2h 36m
Frontier
Sun 5/36:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/12![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:15 am
DEN
- SAN
Nonstop2h 37m
Frontier
Fri 4/176:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/11![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:30 pm
DEN
- SAN
Nonstop2h 34m
Frontier
Sun 5/36:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/13![Frontier logo]()
$81
This Cheapflightsfares deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:15 am
DEN
- SAN
Nonstop2h 37m
Frontier
Fri 4/109:28 pm
SAN
- DEN
Nonstop2h 33m
Frontier
Deal found 3/13![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1110:30 pm
DEN
- SAN
Nonstop2h 32m
Multiple Airlines
Mon 4/138:05 pm
SAN
- DEN
Nonstop2h 39m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$83
This Trip.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:25 am
DEN
- SAN
Nonstop2h 41m
Multiple Airlines
Wed 4/158:00 am
SAN
- DEN
Nonstop2h 41m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$84
This Trip.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:29 pm
DEN
- SAN
Nonstop2h 30m
Multiple Airlines
Mon 5/48:41 am
SAN
- DEN
Nonstop2h 25m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$85
This Expedia deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:30 pm
DEN
- SAN
Nonstop2h 32m
Multiple Airlines
Thu 4/161:48 pm
SAN
- DEN
Nonstop2h 36m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$87
Best flights from Denver to San DiegoDiscover carefully curated flight deals from Denver to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 15, 2026.
Discover carefully curated flight deals from Denver to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 15, 2026.
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:20 pm
DEN
- SAN
Nonstop2h 25m
Southwest
Tue 5/194:30 pm
SAN
- DEN
1 stop5h 35m
Southwest
Deal found 3/10![Southwest logo]()
$101
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:50 pm
DEN
- SAN
Nonstop2h 32m
United Airlines
Mon 4/206:32 am
SAN
- DEN
Nonstop2h 37m
United Airlines
Deal found 3/12![United Airlines logo]()
$117
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:25 pm
DEN
- SAN
1 stop4h 35m
Southwest
Wed 5/206:30 pm
SAN
- DEN
1 stop4h 35m
Southwest
Deal found 3/10![Southwest logo]()
$124
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/37:45 am
DEN
- SAN
Nonstop2h 31m
United Airlines
Sun 4/57:14 pm
SAN
- DEN
Nonstop2h 31m
United Airlines
Deal found 3/10![United Airlines logo]()
$137
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/245:10 pm
DEN
- SAN
1 stop3h 45m
Southwest
Mon 4/275:25 pm
SAN
- DEN
1 stop4h 40m
Southwest
Deal found 3/12![Southwest logo]()
$132
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/25:30 am
DEN
- SAN
1 stop4h 10m
Southwest
Sun 4/57:25 pm
SAN
- DEN
1 stop4h 30m
Southwest
Deal found 3/10![Southwest logo]()
$137
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:30 am
DEN
- SAN
1 stop4h 25m
Delta
Sun 4/56:15 am
SAN
- DEN
1 stop4h 18m
Delta
Deal found 3/12![Delta logo]()
$354
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/25:30 am
DEN
- SAN
1 stop4h 10m
Southwest
Tue 4/78:35 am
SAN
- DEN
1 stop5h 30m
Southwest
Deal found 3/12![Southwest logo]()
$167
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/116:40 pm
DEN
- SAN
Nonstop2h 30m
Southwest
Wed 4/157:35 pm
SAN
- DEN
Nonstop2h 25m
Southwest
Deal found 3/14![Southwest logo]()
$177
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/65:10 pm
DEN
- SAN
2 stops5h 25m
Southwest
Wed 4/88:40 am
SAN
- DEN
2 stops5h 25m
Southwest
Deal found 3/10![Southwest logo]()
$258
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/25:10 pm
DEN
- SAN
2 stops5h 25m
Southwest
Wed 4/88:40 am
SAN
- DEN
2 stops5h 25m
Southwest
Deal found 3/11![Southwest logo]()
$333
Last-minute flights from Denver to San DiegoDiscover last-minute flight deals from Denver to San Diego. Data last updated March 15, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to San Diego. Data last updated March 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:15 am
DEN
- SAN
Nonstop2h 37m
Frontier
Sat 4/116:25 am
SAN
- DEN
Nonstop2h 40m
Frontier
Deal found 3/11![Frontier logo]()
$71
This Cheapflightsfares deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:15 am
DEN
- SAN
Nonstop2h 37m
Frontier
Fri 4/109:28 pm
SAN
- DEN
Nonstop2h 33m
Frontier
Deal found 3/11![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:15 am
DEN
- SAN
Nonstop2h 37m
Frontier
Fri 4/176:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/11![Frontier logo]()
$80
This Trip.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1110:30 pm
DEN
- SAN
Nonstop2h 32m
Multiple Airlines
Mon 4/138:05 pm
SAN
- DEN
Nonstop2h 39m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$83
This Trip.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:25 am
DEN
- SAN
Nonstop2h 41m
Multiple Airlines
Wed 4/158:00 am
SAN
- DEN
Nonstop2h 41m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$84
This Expedia deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:30 pm
DEN
- SAN
Nonstop2h 32m
Multiple Airlines
Thu 4/161:48 pm
SAN
- DEN
Nonstop2h 36m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/259:30 pm
DEN
- SAN
Nonstop2h 36m
Frontier
Sun 5/36:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/12![Frontier logo]()
$77
This Booking.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:00 am
DEN
- SAN
Nonstop2h 34m
Frontier
Sun 5/36:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/12![Frontier logo]()
$73
This Trip.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 am
DEN
- SAN
Nonstop2h 34m
Frontier
Mon 5/46:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/12![Frontier logo]()
$76
This Trip.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:29 pm
DEN
- SAN
Nonstop2h 30m
Multiple Airlines
Mon 5/48:41 am
SAN
- DEN
Nonstop2h 25m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$85
This Frontier deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:30 pm
DEN
- SAN
Nonstop2h 34m
Frontier
Sun 5/36:25 am
SAN
- DEN
Nonstop2h 37m
Frontier
Deal found 3/13![Frontier logo]()
$81
One-way flights from Denver to San DiegoSearch for one-way flight options from Denver to San Diego. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
Search for one-way flight options from Denver to San Diego. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:20 pm
DEN
- SAN
1 stop4h 25m
Southwest
Deal found 3/11![Southwest logo]()
$51
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:15 am
DEN
- SAN
Nonstop2h 37m
Frontier
Deal found 3/12![Frontier logo]()
$53
This deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:29 pm
DEN
- SAN
Nonstop2h 26m
Frontier
Deal found 3/10![Frontier logo]()
$54
This Trip.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/176:20 pm
DEN
- SAN
Nonstop2h 38m
Hawaiian Airlines
Deal found 3/14![Hawaiian Airlines logo]()
$55
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:20 pm
DEN
- SAN
Nonstop2h 38m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$57
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:45 am
DEN
- SAN
Nonstop2h 31m
United Airlines
Deal found 3/13![United Airlines logo]()
$59
This Super.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2510:29 pm
DEN
- SAN
Nonstop2h 39m
Frontier
Deal found 3/11![Frontier logo]()
$63
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:20 pm
DEN
- SAN
1 stop4h 25m
Southwest
Deal found 3/12![Southwest logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/129:52 am
DEN
- SAN
1 stop9h 07m
Frontier
Deal found 3/13![Frontier logo]()
$65
This Cheapflightsfares deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/177:00 am
DEN
- SAN
Nonstop2h 34m
Frontier
Deal found 3/14![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/29:10 am
DEN
- SAN
1 stop26h 58m
Frontier
Deal found 3/11![Frontier logo]()
$67
This eDestinos deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/2110:29 pm
DEN
- SAN
Nonstop2h 39m
Frontier
Deal found 3/12![Frontier logo]()
$68
Find flight deals from Denver to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $71 (Kiwi.com) |
One-way from | $51 (Southwest) |
Popular in | June |
Cheapest in | February |
Average price | $208 |
Good round-trip deal | $138 or less |
Good one-way deal | $86 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Denver 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 2,558,603 searches. Data last updated March 15, 2026.
Use the filters below to find and compare flights from Denver to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Wed 5/13
8:20 pm-9:45 pm
Nonstop2h 25m
San Diego
Tue 5/19
4:30 pm-11:05 pm
1 stop5h 35m
$101
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Fri 4/17
7:50 pm-9:22 pm
Nonstop2h 32m
San Diego
Mon 4/20
6:32 am-10:09 am
Nonstop2h 37m
$117
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Fri 5/15
6:25 pm-10:00 pm
1 stop4h 35m
San Diego
Wed 5/20
6:30 pm-12:05 am
1 stop4h 35m
$124
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Fri 4/24
5:10 pm-7:55 pm
1 stop3h 45m
San Diego
Mon 4/27
5:25 pm-11:05 pm
1 stop4h 40m
$132
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Fri 4/3
7:45 am-9:16 am
Nonstop2h 31m
San Diego
Sun 4/5
7:14 pm-10:45 pm
Nonstop2h 31m
$137
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Thu 4/2
5:30 am-8:40 am
1 stop4h 10m
San Diego
Sun 4/5
7:25 pm-12:55 am
1 stop4h 30m
$137
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Thu 4/2
5:30 am-8:40 am
1 stop4h 10m
San Diego
Tue 4/7
8:35 am-3:05 pm
1 stop5h 30m
$167
Quickest round-trip
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Sat 4/11
6:40 pm-8:10 pm
Nonstop2h 30m
San Diego
Wed 4/15
7:35 pm-11:00 pm
Nonstop2h 25m
$177
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Mon 4/6
5:10 pm-9:35 pm
2 stops5h 25m
San Diego
Wed 4/8
8:40 am-3:05 pm
2 stops5h 25m
$258
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Thu 4/2
5:10 pm-9:35 pm
2 stops5h 25m
San Diego
Wed 4/8
8:40 am-3:05 pm
2 stops5h 25m
$333
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Denver to San Diego
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to San Diego in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Denver-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Denver-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Denver to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Denver with our price prediction graph.
DEN-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 Denver to San Diego
Prices
Airlines
Delays
How far ahead should I book a flight from Denver to San Diego?
Use this chart to determine the optimal time to book a round-trip flight from Denver to San Diego. Price data was last updated on March 13, 2026.
Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Denver to San Diego?
Currently, February is the cheapest month in which you can book a flight from Denver to San Diego (average of $38). Flying from Denver to San Diego in September is currently the most expensive (average of $75). 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 DEN to SAN?
Find hourly flight availability from Denver 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 March 15, 2026.
When flying from Denver to San Diego, 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 37% versus a flight at noon.
What is the cheapest day to fly from Denver to San Diego?
Use this chart to determine the cheapest time to fly round-trip from Denver to San Diego. Price data was last updated on March 14, 2026.
Travelers seeking maximum savings on their Denver to San Diego flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from Denver to San Diego delayed?
About 20% of weekly flights between Denver and San Diego have experienced delays in the past year, with the average delay time being 128 minutes.
What is the most punctual flight time for Denver to San Diego flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Denver to San Diego flights?
Over the last year, Alaska Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.
The best insider tips for Denver to San Diego flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to San Diego trip
Our travel experts
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated March 15, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andHawaiian Airlines from Denver to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Feb 2026
DEN - BDL
Related info for your journey
Find useful and relevant information for your journey from Denver 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
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove
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Denver and San Diego flights
Browse other Denver and San Diego flight options. Last updated on March 15, 2026.
Other flights from Denver
Browse through other flights departing from Denver. Flights are based on user searches made on Cheapflights and were last updated on March 15, 2026.
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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 March 15, 2026.
Top 5 airlines flying from Denver to San Diego
Discover the top 5 airlines that operate flights from Denver 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 2,558,603 searches. Data last updated March 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$51 | Average$165 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$68 | Average$177 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$100 | Average$199 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$257 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$117 | Average$236 | FlexibilityNo cancel fee | On-time63% |