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$44+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SAN
Dec 24 — Dec 311
Tue 12/24
Tue 12/31
1 adult, Economy
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Cheap flight deals from Colorado to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Colorado (USCO) 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 December 19, 2024.

Round-trip from

$78
(Frontier)

One-way from

$44
(Frontier)
From Colorado to San Diego
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One-way flight from Colorado to San Diego
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Find flight deals from Colorado to San Diego

Cheapest flights from Colorado to San Diego
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 December 19, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 12/18. 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 12/3110:20 pmDEN - SAN
Nonstop2h 34mFrontier
Tue 1/76:25 amSAN - DEN
Nonstop2h 31mFrontier
Deal found 12/18$141
This Frontier deal was found by Cheapflights users on 12/18. 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.
Mon 12/238:59 amEGE - SAN
1 stop9h 57mFrontier
Sun 12/296:25 amSAN - EGE
1 stop7h 14mFrontier
Deal found 12/18$188
This American Airlines deal was found by Cheapflights users on 12/19. 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.
Sat 12/283:30 pmGJT - SAN
1 stop3h 53mAmerican Airlines
Thu 1/29:58 amSAN - GJT
1 stop4h 02mAmerican Airlines
Deal found 12/19$273
This American Airlines deal was found by Cheapflights users on 12/19. 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.
Fri 12/2712:16 pmASE - SAN
1 stop7h 07mAmerican Airlines
Tue 12/316:15 amSAN - ASE
1 stop7h 15mAmerican Airlines
Deal found 12/19$358
This American Airlines deal was found by Cheapflights users on 12/18. 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 12/195:27 amDRO - SAN
1 stop8h 09mAmerican Airlines
Wed 12/2512:39 pmSAN - DRO
1 stop4h 15mAmerican Airlines
Deal found 12/18$378
This Expedia deal was found by Cheapflights users on 12/18. 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 12/306:00 amDEN - SAN
1 stop9h 40mMultiple Airlines
Mon 1/69:19 pmSAN - DEN
2 stops14h 10mMultiple Airlines
Deal found 12/18$381
This Southwest deal was found by Cheapflights users on 12/18. 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 12/316:15 pmDEN - SAN
1 stop4h 00mSouthwest
Fri 1/38:45 amSAN - DEN
2 stops5h 45mSouthwest
Deal found 12/18$420
This United Airlines deal was found by Cheapflights users on 12/18. 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 12/317:45 amDEN - SAN
Nonstop2h 29mUnited Airlines
Fri 1/38:35 amSAN - DEN
Nonstop2h 28mUnited Airlines
Deal found 12/18$452
This United Airlines deal was found by Cheapflights users on 12/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/231:25 pmGJT - SAN
2 stops10h 04mUnited Airlines
Mon 12/307:00 amSAN - GJT
1 stop6h 47mUnited Airlines
Deal found 12/19$463
This Delta deal was found by Cheapflights users on 12/18. 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 12/2512:53 pmEGE - SAN
1 stop11h 39mDelta
Tue 12/314:06 pmSAN - EGE
1 stop19h 07mDelta
Deal found 12/18$502
This Travelocity deal was found by Cheapflights users on 12/18. 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.
Mon 12/238:59 amEGE - SAN
1 stop9h 57mMultiple Airlines
Sat 12/2812:54 pmSAN - EGE
Nonstop2h 36mMultiple Airlines
Deal found 12/18$503
This Delta deal was found by Cheapflights users on 12/18. 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 12/296:25 pmDEN - SAN
1 stop6h 07mDelta
Wed 1/16:15 amSAN - DEN
1 stop4h 46mDelta
Deal found 12/18$517

Find flights from Colorado to San Diego within your budget

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 December 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Sat 2/22

10:43 pm-12:20 am

Nonstop2h 37m

San Diego

Tue 2/25

4:06 pm-7:33 pm

Nonstop2h 27m

$75

VailSan Diego

EGE - SAN

EGESAN

Vail Eagle County

Sun 2/16

3:07 pm-12:20 am

1 stop10h 13m

San Diego

Thu 2/20

6:25 am-2:07 pm

1 stop6h 42m

$83

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Tue 2/18

10:43 pm-12:20 am

Nonstop2h 37m

San Diego

Tue 2/25

7:20 am-9:20 pm

2 stops13h 00m

$180

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Fri 2/7

7:40 pm-9:10 pm

Nonstop2h 30m

San Diego

Mon 2/10

7:00 am-10:28 am

Nonstop2h 28m

$197

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Thu 1/30

9:40 am-11:15 am

Nonstop2h 35m

San Diego

Thu 1/30

6:30 pm-9:50 pm

Nonstop2h 20m

$198

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Wed 1/8

5:40 am-9:10 am

1 stop4h 30m

San Diego

Sat 1/11

6:15 am-11:37 am

1 stop4h 22m

$216

DurangoSan Diego

DRO - SAN

DROSAN

Durango La Plata County

Thu 2/27

6:59 pm-9:44 pm

1 stop3h 45m

San Diego

Tue 3/4

10:20 am-2:51 pm

1 stop3h 31m

$218

Grand JunctionSan Diego

GJT - SAN

GJTSAN

Grand Junction Regnl

Thu 1/30

5:00 am-8:39 am

1 stop4h 39m

San Diego

Sun 2/2

4:30 pm-10:18 pm

1 stop4h 48m

$228

VailSan Diego

EGE - SAN

EGESAN

Vail Eagle County

Wed 1/8

5:21 pm-10:30 pm

1 stop6h 09m

San Diego

Sun 1/12

7:00 am-2:42 pm

1 stop6h 42m

$232

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Fri 2/7

2:07 pm-7:36 am

2 stops18h 29m

San Diego

Mon 2/10

6:20 am-1:07 pm

1 stop5h 47m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 46 results
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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.
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.

Travel insights for flights from Colorado to San Diego

Get recent, data-driven insights about flights from Colorado to San Diego including ideal travel times, pricing trends, and more.

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 December 19, 2024.

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 December 19, 2024.

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 (7 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 December 19, 2024.
See what other customers who have flown with Frontier, United 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.
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,836 reviews
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,545 reviews
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,600 reviews
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
9,043 reviews
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,836 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

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.

  • What airport do you fly into for flights to San Diego from Colorado?

    San Diego (SAN), located 2.6 mi from the city center, is the airport you fly into when you book flights from Colorado to San Diego.

  • How popular is this Colorado to San Diego flight route?

    This flight path from Colorado to San Diego was viewed by 153 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Colorado to San Diego one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $44. United Airlines flights start at $88 while deals on American Airlines start at $99 one-way.

  • What are the most popular routes from Colorado to San Diego?

    While some choose either Colorado Springs - San Diego or Durango La Plata County - San Diego, Denver Intl - San Diego is the most popular route from Colorado to San Diego.

  • What are the most reliable airlines from Colorado to San Diego?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Colorado to San Diego on time: United Airlines (85%), Lufthansa (83%), Copa Airlines (81%).

  • What are the cheapest flights from Colorado to San Diego?

    Looking for the cheapest flight from Colorado to San Diego? While on average our users pay $293, our data indicates the cheapest price to be $33. The most popular route (Denver Intl - San Diego), is priced around $133.

  • Can I find deals for flights from Colorado to San Diego that include hotel bookings?

    Yes. In addition to deals on Colorado to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to San Diego.

  • Can I find deals for business class flights from Colorado to San Diego?

    Yes. Cheapflights offers flight deals from Colorado to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Colorado to San Diego

Discover the top 5 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 December 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$145FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$150Average$442FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$158Average$321FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$176Average$374FlexibilityNo cancel feeOn-time71%
DeltaCheapest$196Average$257FlexibilityNo cancel feeOn-timeN/A
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