$79+ Cheap flights from Colorado to San Diego (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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
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
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.Cheap 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 June 12, 2025.
Round-trip from | $127 (Cheapflightsfares) |
|---|---|
One-way from | $79 (United Airlines) |
Popular in | March |
Cheapest in | September |
Average price | $198 |
Good round-trip deal | $172 or less |
Good one-way deal | $96 or less |
Find flight deals from Colorado to San Diego
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 June 12, 2025.
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 June 12, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
This United Airlines deal was found by Cheapflights users on 6/10. 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.
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 6/11. 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.
This United Airlines deal was found by Cheapflights users on 6/12. 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.
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 2,558,603 searches. Data last updated June 12, 2025.
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
Price
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Sat 7/12
9:36 pm-11:02 pm
Nonstop2h 26m
San Diego
Wed 7/16
6:25 am-10:02 am
Nonstop2h 37m
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Wed 7/30
7:45 am-9:09 am
Nonstop2h 24m
San Diego
Sun 8/3
6:45 am-10:13 am
Nonstop2h 28m
Grand JunctionSan Diego
GJT - SAN
GJTSAN
Grand Junction Regnl
Fri 6/27
6:11 am-8:50 am
1 stop3h 39m
San Diego
Tue 7/1
7:33 pm-12:15 am
1 stop3h 42m
DenverSan Diego
DEN - SAN
DENSAN
Denver Intl
Fri 8/22
7:20 am-12:17 pm
1 stop5h 57m
San Diego
Wed 8/27
9:44 am-2:52 pm
1 stop4h 08m
DurangoSan Diego
DRO - SAN
DROSAN
Durango La Plata County
Thu 6/26
7:20 pm-9:48 pm
1 stop3h 28m
San Diego
Sun 6/29
7:33 pm-12:08 am
1 stop3h 35m
Grand JunctionSan Diego
GJT - SAN
GJTSAN
Grand Junction Regnl
Tue 7/29
6:00 am-8:39 am
1 stop3h 39m
San Diego
Sat 8/2
5:00 pm-10:33 pm
1 stop4h 33m
AspenSan Diego
ASE - SAN
ASESAN
Aspen Pitkin County
Wed 8/6
12:05 pm-3:19 pm
1 stop4h 14m
San Diego
Sun 8/10
9:59 am-5:51 pm
1 stop6h 52m
MontroseSan Diego
MTJ - SAN
MTJSAN
Montrose County
Wed 7/2
1:35 pm-5:32 pm
1 stop4h 57m
San Diego
Fri 7/4
12:45 pm-8:51 pm
1 stop7h 06m
Colorado SpringsSan Diego
COS - SAN
COSSAN
Colorado Springs
Fri 7/11
5:09 pm-11:06 pm
2 stops30h 57m
San Diego
Sun 7/13
9:40 pm-4:19 pm
2 stops17h 39m
Colorado SpringsSan Diego
COS - SAN
COSSAN
Colorado Springs
Thu 10/16
3:55 pm-5:10 pm
Nonstop2h 15m
San Diego
Mon 10/20
7:10 pm-12:35 am
1 stop4h 25m
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.
Cheapflights Insights
Everything you need to know about your flight from Colorado to San Diego
What is the cheapest month to book a flight from Colorado to San Diego?
Currently, August is the cheapest month in which you can book a flight from Colorado to San Diego (average of $286). Flying from Colorado to San Diego in March is currently the most expensive (average of $366). 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 June 12, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to San Diego as you normally would.
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 June 12, 2025.
The most flights from USCO to SAN are scheduled on a Thursday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).
Rainfall in San Diego by month
Plan your trip to San Diego by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.
Temperature in San Diego by month
Plan your trip to San Diego by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).
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 June 12, 2025.
See what other customers who have flown with Breeze Airways, Alaska Airlines and Southwest from Colorado to San Diego have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Dena,Dec 2024
LAS - BDL
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.
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Alternative routes for Colorado to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Colorado to San Diego
Discover the top 6 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 2,558,603 searches. Data last updated June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$163 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$417 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$175 | Average$356 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$177 | Average$348 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$194 | Average$333 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$212 | Average$372 | FlexibilityNo cancel fee | On-time71% |