HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$63+ Cheap flights from San Diego (SAN) to Colorado

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DEN
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Colorado 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 San Diego to Colorado

Keep the following information in mind while searching for San Diego to Colorado flight deals. Data was last updated April 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$124
(Cheapflightsfares)

One-way from

$63
(Cheapflightsfares)

Popular in

March

Cheapest in

January

Average price

$195

Good round-trip deal

$198 or less

Good one-way deal

$121 or less
Provider with most accurate pricing for San Diego-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Denver Intl flights.
Search Deals
From San Diego to Colorado
Search Deals
One-way flight from San Diego to Colorado
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from San Diego to Colorado.
Search Deals
Price to beat on a one-way flight from San Diego to Colorado.
Search Deals

Find flight deals from San Diego to Colorado

Cheapest flights from San Diego to Colorado
Explore the most affordable flight options available from San Diego to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 5/216:25 amSAN - DEN
Nonstop2h 31mFrontier
Sat 5/243:48 pmDEN - SAN
Nonstop2h 32mFrontier
Deal found 4/29$124
This Orbitz deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/76:25 amSAN - DEN
Nonstop2h 37mMultiple Airlines
Wed 7/97:06 pmDEN - SAN
1 stop5h 59mMultiple Airlines
Deal found 4/29$182
This United Airlines deal was found by Cheapflights users on 4/28. 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 10/75:50 pmSAN - DEN
1 stop5h 38mUnited Airlines
Sat 10/117:45 amDEN - SAN
Nonstop2h 24mUnited Airlines
Deal found 4/28$203
This Delta deal was found by Cheapflights users on 4/28. 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 6/111:28 pmSAN - DEN
1 stop5h 25mDelta
Tue 7/112:50 pmDEN - SAN
1 stop4h 09mDelta
Deal found 4/28$217
This Delta deal was found by Cheapflights users on 4/28. 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 5/259:47 amSAN - GJT
1 stop3h 51mDelta
Wed 5/286:05 amGJT - SAN
1 stop3h 37mDelta
Deal found 4/28$221
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 5/284:43 pmSAN - COS
1 stop6h 02mAmerican Airlines
Sat 5/314:43 pmCOS - SAN
1 stop6h 10mAmerican Airlines
Deal found 4/29$243
This United Airlines deal was found by Cheapflights users on 4/28. 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 5/2511:15 amSAN - GJT
2 stops8h 10mUnited Airlines
Wed 5/281:45 pmGJT - SAN
1 stop4h 29mUnited Airlines
Deal found 4/28$244
This American Airlines deal was found by Cheapflights users on 4/29. 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 9/510:26 amSAN - DEN
1 stop6h 41mAmerican Airlines
Mon 9/88:39 amDEN - SAN
1 stop7h 11mAmerican Airlines
Deal found 4/29$244
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 5/136:20 amSAN - GJT
1 stop3h 47mAmerican Airlines
Tue 5/206:30 pmGJT - SAN
1 stop4h 06mAmerican Airlines
Deal found 4/29$245
This Delta deal was found by Cheapflights users on 4/28. 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.
Sat 7/199:47 amSAN - COS
1 stop5h 07mDelta
Wed 7/235:55 pmCOS - SAN
1 stop6h 47mDelta
Deal found 4/28$245
This Southwest deal was found by Cheapflights users on 4/29. 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 11/145:00 pmSAN - DEN
1 stop4h 30mSouthwest
Sun 11/165:25 amDEN - SAN
1 stop4h 55mSouthwest
Deal found 4/29$252
This American Airlines deal was found by Cheapflights users on 4/28. 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 9/265:01 pmSAN - DRO
1 stop6h 05mAmerican Airlines
Wed 10/18:10 amDRO - SAN
1 stop8h 33mAmerican Airlines
Deal found 4/28$258

Cheapflights Fare Finder

Customize your flight search to find flights from San Diego to Colorado 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 April 30, 2025.
Use the filters below to find and compare flights from San Diego to Colorado that are best for you.

Fly from

San Diego

Fly to

Colorado

Route

Depart

Return

Price

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 5/21

6:25 am-9:56 am

Nonstop2h 31m

Denver Intl

Sat 5/24

3:48 pm-5:20 pm

Nonstop2h 32m

$124

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Mon 7/7

6:25 am-10:02 am

Nonstop2h 37m

Denver Intl

Wed 7/9

7:06 pm-12:05 am

1 stop5h 59m

$182

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 6/11

5:04 pm-10:25 pm

1 stop4h 21m

Denver Intl

Sat 6/28

5:30 am-8:40 am

1 stop4h 10m

$217

San DiegoGrand Junction

SAN - GJT

SANGJT

San Diego

Sun 5/25

9:47 am-2:38 pm

1 stop3h 51m

Grand Junction Regnl

Wed 5/28

6:05 am-8:42 am

1 stop3h 37m

$221

San DiegoColorado Springs

SAN - COS

SANCOS

San Diego

Wed 5/28

4:43 pm-11:45 pm

1 stop6h 02m

Colorado Springs

Sat 5/31

4:43 pm-9:53 pm

1 stop6h 10m

$243

San DiegoGrand Junction

SAN - GJT

SANGJT

San Diego

Sun 5/25

11:15 am-8:25 pm

2 stops8h 10m

Grand Junction Regnl

Wed 5/28

1:45 pm-5:14 pm

1 stop4h 29m

$244

San DiegoGrand Junction

SAN - GJT

SANGJT

San Diego

Tue 5/13

6:20 am-11:07 am

1 stop3h 47m

Grand Junction Regnl

Tue 5/20

6:30 pm-9:36 pm

1 stop4h 06m

$245

San DiegoColorado Springs

SAN - COS

SANCOS

San Diego

Sat 7/19

9:47 am-3:54 pm

1 stop5h 07m

Colorado Springs

Wed 7/23

5:55 pm-11:42 pm

1 stop6h 47m

$245

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Thu 6/19

4:24 pm-9:42 pm

1 stop4h 18m

Denver Intl

Mon 6/23

6:59 pm-9:48 pm

1 stop3h 49m

$247

San DiegoDurango

SAN - DRO

SANDRO

San Diego

Fri 9/26

5:01 pm-12:06 am

1 stop6h 05m

Durango La Plata County

Wed 10/1

8:10 am-3:43 pm

1 stop8h 33m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 47 results
1
2
3
...
5

Best time to book a flight from San Diego to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from San Diego 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.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Colorado

What is the cheapest month to book a flight from San Diego to Colorado?

Currently, October is the cheapest month in which you can book a flight from San Diego to Colorado (average of $197). Flying from San Diego to Colorado in March is currently the most expensive (average of $278). 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 SAN to CO?

Find hourly flight availability from San Diego to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

When flying from San Diego to Colorado, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Colorado by month

Plan your trip to Colorado by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Colorado ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Colorado when rainfall is around 0.5 in.

Temperature in Colorado by month

Plan your trip to Colorado by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Colorado, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated April 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from San Diego to Colorado to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,968 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,936 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,968 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Colorado. 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 from for flights from San Diego to Colorado?

    If you book a flight to Colorado from San Diego, you will be flying from San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego.

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

    Flights from San Diego to Colorado have been viewed 178 times in the past calendar month.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $63. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from San Diego to Colorado for a low price.

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

    Most travelers choose San Diego - Denver Intl, San Diego - Colorado Springs or San Diego - Grand Junction Regnl when deciding on the best route from San Diego to Colorado.

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

    The top 3 most reliable airlines when flying from San Diego to Colorado are Sun Country Air (100%), Lufthansa (92%) and United Airlines (90%).

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

    Looking for the cheapest flight from San Diego to Colorado? While on average our users pay $620, our data indicates the cheapest price to be $89. The most popular route (San Diego - Denver Intl), is priced around $156.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to Colorado 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 San Diego to Colorado?

    Currently, October is the cheapest month in which you can book a flight from San Diego to Colorado (average of $197). Flying from San Diego to Colorado in March is currently the most expensive (average of $278). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Seattle flights
Los Angeles to Newark flights
Los Angeles to Dallas/Fort Worth flights
San Francisco to Newark flights
Los Angeles to LaGuardia flights
Los Angeles to Honolulu flights
Los Angeles to Boston flights
Los Angeles to Miami flights
San Jose to Los Angeles flights
Los Angeles to Las Vegas flights
San Francisco to Los Angeles flights
San Francisco to Las Vegas flights
Los Angeles to Orlando flights
Los Angeles to San Francisco flights
Los Angeles to O'Hare Intl flights
San Francisco to LaGuardia flights
San Francisco to Honolulu flights
San Jose to Las Vegas flights
Los Angeles to Reagan-National flights
Santa Ana to Las Vegas flights
Los Angeles to Portland flights
Ontario to John F Kennedy Intl flights
Los Angeles to Baltimore flights
Oakland to Las Vegas flights
Burbank to Las Vegas flights
San Diego to Seattle flights
San Francisco to Seattle flights
Los Angeles to Dulles Intl flights
San Francisco to Ontario flights
San Francisco to O'Hare Intl flights
Oakland to Los Angeles flights
Los Angeles to Oakland flights
Santa Ana to Seattle flights
Ontario to Seattle flights
San Diego to John F Kennedy Intl flights
San Francisco to Boston flights
Burbank to Newark flights
Los Angeles to Kahului flights
Oakland to Santa Ana flights
Ontario to Dallas/Fort Worth flights
Santa Ana to Newark flights
Los Angeles to San Jose flights
San Diego to Newark flights
San Jose to Seattle flights
Burbank to Seattle flights
Los Angeles to Hobby flights
Ontario to San Francisco flights
Los Angeles to Fort Lauderdale flights

Top 6 airlines flying from San Diego to Colorado

Discover the top 6 airlines that operate flights from San Diego to Colorado. 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$113FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$167Average$461FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$175Average$367FlexibilityNo cancel feeOn-time63%
DeltaCheapest$206Average$387FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$218Average$388FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$237Average$420FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.