$78+ Cheap flights from Denver to San Diego (DEN - 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAN
Dec 10 — Dec 171
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 89 days in advance, depart on a Thursday or Saturday and return on a Saturday
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 November 10, 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 November 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1010:29 pm -
Nonstop2h 29m
Fri 12/116:30 am -
Nonstop2h 36m
Deal found 11/10![Frontier logo]()
$121
This Expedia deal was found by Cheapflights users on 11/9. 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 Expedia 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 12/1611:14 am -
Nonstop2h 42m
Deal found 11/9![Frontier logo]()
$122
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 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
Mon 12/77:51 pm -
1 stop13h 19m
Deal found 11/5![Frontier logo]()
$123
This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:39 am -
1 stop11h 37m
Sat 12/126:30 am -
Nonstop2h 36m
Deal found 11/6![Frontier logo]()
$124
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 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 11/5![Frontier logo]()
$125
This Mytrip deal was found by Cheapflights users on 11/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:50 am -
Nonstop2h 31m
Tue 12/87:51 pm -
1 stop17h 21m
Deal found 11/6![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:50 am -
Nonstop2h 31m
Wed 12/29:58 am -
1 stop6h 57m
Deal found 11/9![Frontier logo]()
$130
This CheapOair deal was found by Cheapflights users on 11/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:29 pm -
Nonstop2h 28m
Sat 12/56:30 am -
Nonstop2h 36m
Deal found 11/6![Frontier logo]()
$131
This Travelocity deal was found by Cheapflights users on 11/10. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1210:06 am -
1 stop9h 10m
Sun 12/136:30 am -
Nonstop2h 36m
Deal found 11/10![Frontier logo]()
$132
This Trip.com deal was found by Cheapflights users on 11/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:50 am -
Nonstop2h 31m
Thu 12/311:16 am -
Nonstop2h 42m
Deal found 11/6![Frontier logo]()
$133
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 November 10, 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 November 10, 2026.
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/277:02 am -
Nonstop2h 44m
Mon 1/48:15 pm -
Nonstop2h 40m
Deal found 11/9![Alaska Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 11/5. 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.
Sun 12/275:55 am -
Nonstop2h 25m
Thu 12/317:00 pm -
Nonstop2h 25m
Deal found 11/5![Southwest logo]()
$297
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/197:40 am -
Nonstop2h 34m
Sat 12/264:45 pm -
1 stop4h 53m
Deal found 11/8![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 11/5. 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.
Wed 3/105:40 am -
1 stop4h 26m
Tue 3/163:59 pm -
1 stop6h 01m
Deal found 11/5![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 11/9. 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.
Thu 12/248:45 am -
2 stops5h 15m
Wed 12/306:25 pm -
1 stop4h 30m
Deal found 11/9![Southwest logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/88:20 am -
Nonstop2h 25m
Mon 4/193:15 pm -
Nonstop2h 18m
Deal found 11/5![Alaska Airlines logo]()
$347
This Delta deal was found by Cheapflights users on 11/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/216:30 am -
1 stop5h 00m
Mon 3/2210:00 am -
1 stop7h 10m
Deal found 11/9![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 11/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2112:59 pm -
1 stop6h 56m
Wed 3/245:00 pm -
1 stop4h 33m
Deal found 11/9![Delta logo]()
$367
This Southwest deal was found by Cheapflights users on 11/9. 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 1/155:45 pm -
1 stop4h 00m
Sat 1/237:15 am -
2 stops5h 45m
Deal found 11/9![Southwest logo]()
$394
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Sat 3/137:40 pm -
Nonstop2h 34m
Sat 3/207:00 am -
Nonstop2h 31m
Deal found 11/5![United Airlines logo]()
$476
This Southwest deal was found by Cheapflights users on 11/6. 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.
Mon 3/228:45 am -
2 stops7h 05m
Fri 3/266:35 am -
1 stop5h 10m
Deal found 11/6![Southwest logo]()
$428
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Fri 11/207:40 am -
1 stop5h 17m
Sun 11/224:01 pm -
1 stop5h 09m
Deal found 11/9![United Airlines logo]()
$477
Last-minute flights from Denver to San DiegoDiscover last-minute flight deals from Denver to San Diego. Data last updated November 10, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to San Diego. Data last updated November 10, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 11/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:50 am -
Nonstop2h 31m
Tue 12/87:51 pm -
1 stop17h 21m
Deal found 11/6![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/18:50 am -
Nonstop2h 31m
Wed 12/29:58 am -
1 stop6h 57m
Deal found 11/9![Frontier logo]()
$130
This Trip.com deal was found by Cheapflights users on 11/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:50 am -
Nonstop2h 31m
Thu 12/311:16 am -
Nonstop2h 42m
Deal found 11/6![Frontier logo]()
$133
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 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
Mon 12/77:51 pm -
1 stop13h 19m
Deal found 11/5![Frontier logo]()
$123
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 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 11/5![Frontier logo]()
$125
This CheapOair deal was found by Cheapflights users on 11/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:29 pm -
Nonstop2h 28m
Sat 12/56:30 am -
Nonstop2h 36m
Deal found 11/6![Frontier logo]()
$131
This Expedia deal was found by Cheapflights users on 11/9. 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 Expedia 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 12/1611:14 am -
Nonstop2h 42m
Deal found 11/9![Frontier logo]()
$122
This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:39 am -
1 stop11h 37m
Sat 12/126:30 am -
Nonstop2h 36m
Deal found 11/6![Frontier logo]()
$124
This Cheapflightsfares deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1010:29 pm -
Nonstop2h 29m
Fri 12/116:30 am -
Nonstop2h 36m
Deal found 11/10![Frontier logo]()
$121
This Travelocity deal was found by Cheapflights users on 11/10. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1210:06 am -
1 stop9h 10m
Sun 12/136:30 am -
Nonstop2h 36m
Deal found 11/10![Frontier logo]()
$132
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 November 10, 2026.
Search for one-way flight options from Denver to San Diego. Find affordable one-way fares based on user searches. Data last updated November 10, 2026.
This Super.com deal was found by Cheapflights users on 11/7. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/58:50 am -
1 stop8h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Frontier logo]()
$78
This Mytrip deal was found by Cheapflights users on 11/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:46 am -
1 stop11h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/1010:29 pm -
Nonstop2h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Frontier logo]()
$80
This FlightHub deal was found by Cheapflights users on 11/8. 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 FlightHub 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 11/8![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 11/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/178:35 am -
1 stop11h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Frontier logo]()
$82
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/210:29 pm -
Nonstop2h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Frontier logo]()
$87
This Super.com deal was found by Cheapflights users on 11/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:50 am -
Nonstop2h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Frontier logo]()
$88
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 November 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $121 (Cheapflightsfares) |
One-way from | $78 (Super.com) |
Popular in | June |
Cheapest in | February |
Average price | $260 |
Good round-trip deal | $179 or less |
Good one-way deal | $108 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 7,457,451 searches. Data last updated November 10, 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 Denver Intl - SAN San Diego
DENSAN
Denver Intl
Wed 12/30
7:39 am-1:50 pm
1 stop7h 11m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$114
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Sun 1/3
1:28 pm-3:13 pm
Nonstop2h 45m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$124
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Tue 12/1
6:45 am-10:27 am
1 stop4h 42m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$130
Quickest round-trip
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Sun 12/27
5:55 am-7:20 am
Nonstop2h 25m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$164
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Sat 12/26
7:40 am-9:14 am
Nonstop2h 34m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$174
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Sun 11/29
11:55 pm-1:25 am
Nonstop2h 30m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$174
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Thu 4/15
12:25 pm-1:50 pm
Nonstop2h 25m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$174
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Tue 12/29
5:55 am-7:20 am
Nonstop2h 25m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$174
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Tue 3/16
8:45 am-2:50 pm
2 stops7h 05m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$184
DenverSan Diego
DEN Denver Intl - SAN San Diego
DENSAN
Denver Intl
Thu 3/11
8:45 am-2:50 pm
2 stops7h 05m
San Diego
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$214
Showing 1-10 of 22 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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | 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?
Booking 88 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 $124). Flying from Denver to San Diego in June is currently the most expensive (average of $268). 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 November 10, 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 26% versus a flight in the morning.
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 November 7, 2026.
Travelers seeking maximum savings on their Denver to San Diego flight should consider departing on Saturday 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.
How often are flights from Denver to San Diego delayed?
About 21% of weekly flights between Denver and San Diego have experienced delays in the past year, with the average delay time being 130 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?
Tuesday tends to have the lowest number of delays on this route, whereas Thursday 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 15% 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
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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 November 10, 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.
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
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
National City
Chula Vista
San Ysidro
Poway
Coronado
La Mesa
Julian
Santee
Lemon Grove
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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 7,457,451 searches. Data last updated November 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$48 | Average$161 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$117 | Average$239 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$272 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$275 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$236 | FlexibilityNo cancel fee | On-time85% |