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Find cheap flights from San Diego to Colorado from $45

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Diego to Colorado departing on 5/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 5/27
Mon 6/3

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Best Colorado Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Denver
Denvernonstop$57
Aspen
Aspen1 stop$386
Grand Junction
Grand Junction2 stops$202
Vail
Vail1 stop$350
Durango
Durango1 stop$367
Montrose
Montrose2 stops$296
Hayden
Hayden1 stop$502
Gunnison
Gunnison2 stops$509

Good to know

Low season

April

High season

June

Cheapest flight

$45
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly with an average 11% increase in price.
Flight from San Diego to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from San Diego to Colorado?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Diego to Colorado.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Diego to Colorado?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Colorado from San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Diego to Colorado?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Colorado with an airline and back to San Diego with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Colorado?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Colorado from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Colorado

  • Looking for a cheap flight? 25% of our users found tickets from San Diego to the following destinations at these prices or less: Denver $106 one-way - $130 round-trip
  • Morning departure is around 18% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from San Diego to Colorado

 
Need help choosing which airline to fly with from San Diego to Colorado? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10951 reviews
8.2boarding
8.6crew
8.0entertainment
7.4food
7.9comfort
Airline reviews

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

6.0 GoodDan, Apr 2024LGA - DEN
Read more about Delta reviews

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

The helpful attitude of the staff, and being a wheelchair passenger everyone was helpful and understanding. The trip was made comfortable by the upgraded seat which was given without my request, that was a great surprise. Thank you Delta.

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

Great. Loved that there was WiFi on flight to keep in touch and excellent service of beverages and snacks.

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

Terrible. Flight was cancelled due to the weather in the east and sout east(florida). Did not get any compesation of any kind. According to them, it was not under their control so I lost all the money paid for the 2 fairs from Raleigh, NC to Orlando, Fl.

great flight. Pilot was communicative, flight attendants were excellent. Really nice experience except my tv didn’t work.

I really liked the way snacks and drinks were available throughout the flight!!! The flight attendants were also all fantastic!

Best Thing flight took less time than programmed, quick entry and exit. Recommended!

Always like Jet Blue! It seems, however, that people are getting bigger & seats are getting smaller! We had a very full flight and I couldn't get an aisle seat like I always do. I wish there were more leg room. People sitting next to me were very nice though so it was fine to disturb them if I needed to use the restroom. Otherwise the flight was fine but a bit long.

The pilots were awesome and got us there early. Great landing too. No complaints on the flight. Service - a young cabin crew woman was terrible as she seemed to hate her job and never smiled. Why do they hire people like that? Terrible. The cabin crew lead woman was wonderful - very professional (and more mature go figure)

For some reason, the seats on this flight seemed unusually uncomfortable. Speaking with friends who took another JetBlue flight later in the day, they brought up the same issue.

None of the in flight Direct TV worked. A better selection of Shows would have been better. The baggage was s low. Otherwise we enjoyed our flight!

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

They did get us booked on a later flight, but it made us miss our connecting flight. So, we had to stay and another state overnight with no luggage or clothes. Because they kept our luggage at airport for next flight on the next day.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Crew is way too many times on the intercom re explaining the same thing

Amazing comfortable chairs great snacks super friendly staff pilots did excellent job. Smooth sailing all the way. Definitely be flying United more.

We waited too long to get water while the plane was on the Tarmac awaiting de-icing.

Easy peasy. Crew was great. Take-off and landing nice anc chill (good job by the pilot). Thank you UA!

The plane was delayed coming in and on the tarmac. I was coming from another flight so it made for a very long day. The stewardess kept trying to slam the overhead bins closed and I was worried that she had damaged my new luggage. They ran out of snacks and lccdsddd me a hummus box which was nice. It took them a very long time to pick up the garbage so I could not go to the washroom and had little time. To prepare for disbarment. The TV system was hard to control from the armrest and picture wasn’t clear. The crew did apologize several times for the lateness. It took the Denver airport an unusually long time to de-ice the plane.

By in large it was a good experience. The flight crew was great and that's the most important to me. Boarding was fine.

It was fine. Everything ran on time, crew was great.

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Because I can’t stand very long in one place, I was allowed to reword.

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

Apart from the delay due to unforeseen circumstances. The leg from sjc to dfw was fine. It was the leg from dfw to orf that we encountered issues mainly due to the flight attendant crew not being friendly. We had two small children and we needed some assistance to warm up milk so the baby would sleep. The crew just didn’t get it and made things very difficult. One made a remark that the baby’s dirty diaper smell was a “gift” to the plane in a rude way. Normally I’d brush that off as a funny comment if the rest of the trip the attendants were helpful or understanding of the difficulty we faced. But that wasn’t the case. We were met with rudeness on the second leg. Whereas on the first leg the crew were so nice and helpful.

Flight From PHX to CVG was on time, very professional staff

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Not have to pay for every single item to take a flight. Seating and delays sucked.

Terrible. Seats are bad and the baggage policy is inconsistent

Everything was good, and most importantly on time. They have been extremely tardy in some of my flights

They lost my baggage on my connection flight, it’s been 24 hours since I put my claim in and still no update on my bags.

It’s a cheap airline. I wish they had better seats.

The only issues had were outside of Frontier’s control or weren’t expected. It was a two hour flight they completed fast. We landed almost an hour ahead of schedule. The issues with no entertainment or food weren’t issues since there was no expectations. The issue of the loud or crying babies was outside of frontiers control.

My first time to fly Frontier and loved it! Boarding was super easy as we only had personal items. Crew was helpful and funny and the plane was clean. Pilot was also great at landing the plane smoothly.

Seats are cramped and very uncomfortable. You have to pay for everything and it is too expensive.

Smooth process and flight. My favorite kind. Uneventful and on-time!

Book cheap flights from San Diego to Colorado

Recent round-trip flight deals

5/22Wed
nonstopFrontier
2h 30mSAN-DEN
5/29Wed
nonstopFrontier
2h 29mDEN-SAN
$65
5/15Wed
nonstopFrontier
2h 30mSAN-DEN
5/20Mon
nonstopFrontier
2h 30mDEN-SAN
$67
5/27Mon
1 stop
14h 25mSAN-DEN
5/30Thu
nonstop
2h 29mDEN-SAN
$145
5/28Tue
1 stopDelta
4h 42mSAN-DEN
5/29Wed
1 stopDelta
6h 11mDEN-SAN
$196
5/26Sun
1 stopDelta
4h 52mSAN-DEN
6/1Sat
1 stopDelta
5h 47mDEN-SAN
$197
6/3Mon
2 stops
20h 15mSAN-GJT
6/11Tue
2 stops
12h 22mGJT-SAN
$202
8/16Fri
1 stopAmerican Airlines
4h 24mSAN-DEN
8/19Mon
1 stopAmerican Airlines
4h 13mDEN-SAN
$222
7/9Tue
1 stopUnited Airlines
6h 29mSAN-COS
7/10Wed
1 stopUnited Airlines
5h 02mCOS-SAN
$238
7/8Mon
1 stopUnited Airlines
6h 49mSAN-COS
7/10Wed
1 stopUnited Airlines
5h 02mCOS-SAN
$273
5/9Thu
1 stopAmerican Airlines
8h 01mSAN-COS
5/14Tue
1 stopAmerican Airlines
8h 39mCOS-SAN
$275

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Recent one-way flight deals

5/22Wed
1 stopFrontier
6h 04mSAN-DEN
$45
5/26Sun
nonstopFrontier
2h 29mSAN-DEN
$49
5/28Tue
1 stopDelta
4h 42mSAN-DEN
$98
5/26Sun
1 stopAmerican Airlines
6h 06mSAN-COS
$99
5/26Sun
1 stopDelta
4h 52mSAN-DEN
$99
8/8Thu
1 stopAmerican Airlines
4h 22mSAN-DEN
$103
5/5Sun
nonstopUnited Airlines
2h 26mSAN-DEN
$160
6/1Sat
2 stopsAlaska Airlines
16h 27mSAN-DEN
$168
5/12Sun
1 stopUnited Airlines
6h 11mSAN-COS
$181
5/29Wed
2 stopsAlaska Airlines
12h 44mSAN-DEN
$181

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Last minute flights from San Diego to Colorado

Last minute flight, train and bus deals

5/2Thu
nonstopFrontier
2h 23mSAN-DEN
5/7Tue
nonstopFrontier
2h 30mDEN-SAN
$148
5/1Wed
multi-stopFrontier
4h 30mSAN-DEN
5/29Wed
nonstopFrontier
2h 29mDEN-SAN
$158
5/1Wed
multi-stopAmerican Airlines
7h 54mSAN-COS
5/4Sat
multi-stopAmerican Airlines
7h 41mCOS-SAN
$375
5/1Wed
multi-stopAmerican Airlines
10h 04mSAN-COS
5/4Sat
multi-stopAmerican Airlines
7h 41mCOS-SAN
$380
4/28Sun
multi-stopUnited Airlines
6h 27mSAN-COS
5/1Wed
multi-stopUnited Airlines
4h 51mCOS-SAN
$528
4/28Sun
multi-stopUnited Airlines
6h 27mSAN-COS
5/1Wed
multi-stopUnited Airlines
9h 22mCOS-SAN
$533
4/29Mon
multi-stopAlaska Airlines
8h 56mSAN-DEN
5/7Tue
multi-stopAlaska Airlines
11h 17mDEN-SAN
$566
4/29Mon
multi-stopAlaska Airlines
8h 56mSAN-DEN
5/6Mon
multi-stopAlaska Airlines
26h 58mDEN-SAN
$586
4/28Sun
multi-stopDelta
4h 40mSAN-DEN
4/28Sun
multi-stopDelta
6h 43mDEN-SAN
$616
4/28Sun
multi-stopDelta
7h 32mSAN-COS
5/1Wed
multi-stopDelta
10h 38mCOS-SAN
$707

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