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SAN - DEN

Find cheap flights from San Diego to Denver from $29

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 Denver 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
Thu 5/23
Thu 5/30

Search hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Denver, as well as popular online travel agencies
In the last 7 days travelers have searched 44,632,927 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from San Diego to Denver (SAN-DEN)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
2:19 pm - 5:51 pmSAN-DEN
2h 32mnonstop
5:45 am - 7:14 amDEN-SAN
2h 29mnonstop
$58Frontier
Find Deal
Sat, May 11 - Sat, May 18
4:57 pm - 8:21 pmSAN-DEN
2h 24mnonstop
5:30 am - 7:00 amDEN-SAN
2h 30mnonstop
$59Frontier
Find Deal
Sat, May 4 - Tue, May 14
10:02 am - 1:29 pmSAN-DEN
2h 27mnonstop
9:39 am - 3:06 pmDEN-SAN
6h 27m1 stop
$60Frontier
Find Deal
Tue, May 7 - Tue, May 14
8:04 am - 11:33 amSAN-DEN
2h 29mnonstop
7:55 pm - 9:25 pmDEN-SAN
2h 30mnonstop
$61Frontier
Find Deal
Tue, May 21 - Tue, May 28
4:03 pm - 10:04 pmSAN-DEN
5h 01m1 stop
6:51 am - 8:24 amDEN-SAN
2h 33mnonstop
$62Frontier
Find Deal
Tue, May 14 - Wed, May 15
2:55 pm - 6:23 pmSAN-DEN
2h 28mnonstop
7:55 pm - 9:25 pmDEN-SAN
2h 30mnonstop
$63Frontier
Find Deal
Sat, May 25 - Tue, Jun 4
5:45 pm - 10:20 amSAN-DEN
15h 35m1 stop
6:50 am - 8:23 amDEN-SAN
2h 33mnonstop
Fri, May 3 - Mon, May 6
5:16 pm - 11:14 pmSAN-DEN
4h 58m1 stop
6:00 pm - 10:47 pmDEN-SAN
5h 47m1 stop
$187Delta
Find Deal
Fri, May 24 - Sat, May 25
5:16 pm - 11:14 pmSAN-DEN
4h 58m1 stop
6:07 am - 9:52 amDEN-SAN
4h 45m1 stop
$196Delta
Find Deal
Tue, May 28 - Tue, Jun 4
5:16 pm - 11:14 pmSAN-DEN
4h 58m1 stop
5:40 am - 9:04 amDEN-SAN
4h 24m1 stop
$198Delta
Find Deal
Thu, May 30 - Sun, Jun 2

Flights from San Diego to Denver - Travel Insights & Trends

Get data-powered insights and trends into flights from San Diego to Denver to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Diego to Denver?

The average price of all flights from San Diego to Denver clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Denver on a Wednesday and more expensive on a Sunday. On your return trip to San Diego, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

What is the cheapest month to fly from San Diego to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Diego to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San Diego to Denver is February, where tickets cost $139 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $255 and $248 respectively.

How far in advance should I book a flight from San Diego to Denver?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Diego to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from San Diego to Denver, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 58 days before departure.

Which airlines provide the cheapest flights from San Diego to Denver?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting San Diego to Denver were found on Frontier ($58) and Delta ($187). Frontier proposed the cheapest one-way flight at $29.

Which airlines fly most frequently between San Diego and Denver?

Southwest connects San Diego to Denver with up to 7 flights per day. United Airlines also offers 7 flights per day, while Frontier follows with 3 flights per day.

Which airlines fly non-stop between San Diego and Denver?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from San Diego to Denver.
There are 3 airlines that fly nonstop from San Diego to Denver. They are: Frontier, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Frontier at $57 for a one-way flight. On average, the best prices for this route can be found at Frontier.

How many flights are there between San Diego and Denver per day?

Each day, there are between 15 and 21 nonstop flights that take off from San Diego and land in Denver, with an average flight time of 2h 25m. The most common departure time is 7:00 am and most flights take off in the morning. Each week, there are 127 flights. The most frequent day of departure is Friday, when 17% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between San Diego and Denver?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from San Diego to Denver take?

The average nonstop flight takes 2h 23m, covering a distance of 852 miles.

What’s the earliest departure time from San Diego to Denver?

Early birds can take the earliest flight from San Diego at 6:20 am and will be landing in Denver at 9:45 am.

What’s the latest departure time from San Diego to Denver?

If you prefer to fly at night, the latest flight from San Diego to Denver jets off at 8:55 pm and lands at 12:10 am.

Good to know

Low season

January

High season

June

Cheapest flight

$29
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from San Diego to Denver

When to book flights from San Diego to Denver

Are your dates flexible? Find out the best times to travel from San Diego to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Diego to Denver

  • What is the easiest way of traveling to San Diego Airport (SAN)?

    The easiest way to travel to SAN varies depending on the traveler's location and preferences. For those in the San Diego area, using a rideshare service like Uber or Lyft, taking a taxi, or driving a personal car may be the most convenient option. Public transportation options like bus, train, and tram are also available, with connections to the Old Town Transit Center.

  • Where can I find a peaceful place to spend some time before flying out of San Diego Airport (SAN)?

    If you are looking for a peaceful place to spend some time before your flight from SAN, the airport offers a Meditation Room. This room is located in Terminal 2, Airside, and provides a space where travelers can find peace and quiet amid the hustle and bustle of the airport.

  • Are there nursing stations at San Diego Airport (SAN)?

    Yes, there are nursing rooms available at San Diego Airport (SAN) for nursing mothers. The rooms can be found post-security in Terminal 1 and 2. They feature a hand washing area and electrical ports to provide a convenient and comfortable experience for nursing mothers.

  • Which nearby cities can I get to from Denver Airport?

    Some of the cities that can be easily accessed from DEN include Boulder, Aurora, and Fort Collins, each located less than an hour's drive away from the airport. Other popular destinations in the region that can be accessed from DEN include the Rocky Mountains, Colorado Springs, and Aspen, which can be accessed by shuttle, car service, or public transportation.

  • Are there pet amenities at Denver International Airport (DEN)?

    Yes. You will find pet relief rooms located airside at near gates A, B, and C, adjacent to US mail drops. These rooms have a canine theme and include amenities including hand soap, a wall-mounted sink, artificial grass flooring, and a drainage system. Additionally, a fenced-in outdoor pet relief area is available at the Jeppesen Terminal, outside door 200.

  • Can I rent a car at Denver Airport?

    Yes. There are several car rental agencies located on the airport property, including Enterprise Rent-A-Car, Avis, Hertz, and Budget. A courtesy shuttle service is provided by these agencies to and from the Jeppesen Terminal. Arrivals at the airport can rent a variety of vehicles such as cars, SUVs, vans, and trucks, depending on their needs.

  • Can I book a nonstop flight from San Diego to Denver?

    Frontier Airlines offers nonstop flights from San Diego International Airport to Denver International Airport in Denver. Other airlines on this route include United Airlines and Southwest Airlines, which offer a fast way to travel from San Diego to Denver.

  • Does San Diego International Airport offer services for guests with mobility impairments?

    The airport offers different accessibility services located throughout the airport to assist travelers with mobility impairments. Services under this category include visual paging monitors, TDD telephones, and a courtesy cart run by Volunteer Airport Ambassadors, located conveniently throughout the airport. Also, you’ll find the Harbor Police Officers, who assist travelers with special needs.

  • Are there designated smoking areas in San Diego International Airport?

    San Diego International Airport is a smoke-free facility. You’re only permitted to smoke in a designated area away from the terminals. You can use ashtrays located in all smoking areas.

  • What is the best means of transportation from Denver International Airport to my destination?

    The SkyRide bus and A Line rail system offer affordable means of transport from Denver International Airport to downtown Denver and nearby towns. You can also use an Uber from the airport or travel via the shuttle service to nearby cities like Welby, Aurora, Federal Heights, and Commerce City. If your friends or family will pick you up, make sure they can find a good parking spot as curbside parking is prohibited.

  • What guest amenities does Denver International Airport offer?

    Guests can use different amenities and facilities when they arrive at the airport. These include free Wi-Fi, religious facilities open 24h a day, and pet relief areas near gates A, B, and C. If you want to nurse your child, there are three nursing rooms located at each concourse.

  • What is the cheapest flight from San Diego to Denver?

    In the last 3 days, the lowest price for a flight from San Diego to Denver was $29 for a one-way ticket and $58 for a round-trip.

  • Do I need a passport to fly between San Diego and Denver?

    No

  • Which airlines offer Wi-Fi service onboard planes from San Diego to Denver?

    All the following airlines offer inflight Wi-Fi service on the San Diego to Denver flight route: Delta, American Airlines, Alaska Airlines, JetBlue, Lufthansa, Air Canada, and United Airlines.

  • Which aircraft models fly most regularly from San Diego to Denver?

    The Boeing 737-800 is the aircraft model that flies most regularly on the San Diego to Denver flight route.

  • Which airline alliances offer flights from San Diego to Denver?

    Star Alliance is the only airline alliance operating flights between San Diego and Denver.

  • On which days can I fly direct from San Diego to Denver?

    There are nonstop flights from San Diego to Denver on a daily basis.

  • Which is the best airline for flights from San Diego to Denver, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Diego to Denver are Delta and United Airlines. With an average price for the route of $234 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $302 and an overall rating of 7.4.

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

    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 Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver 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 Denver?

    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 Denver with an airline and back to San Diego with another airline. Booking your flights between San Diego and DEN can sometimes prove cheaper using this method.

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

    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 Denver 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 a cheap flight from SAN to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $106 or less one-way and $130 or less round-trip.
  • If you choose a one-stop flight from San Diego Airport (SAN) to Denver International Airport (DEN), expect to make a stop in Atlanta (ATL), Las Vegas (LAS), Phoenix (PHX), Los Angeles (LAX), or Salt Lake City (SLC), depending on the airline you choose for the trip.
  • Travelers looking for a hassle-free travel experience from San Diego (SAN) to Denver (DEN), without worrying about extra fees tacked onto their airfare can book a flight with Southwest Airlines. The airline has a no-bag fee policy that adds on to savings and offers a refreshing advantage to travelers.
  • It is advisable that you arrive at San Diego Airport (SAN) at least 2 hours ahead of the time of your flight to Denver. This will give you plenty of time to finish the required airport requirements, such as checking your bags, going through security, and getting to the right departure gate.
  • Most guests traveling from San Diego will use San Diego International Airport (SAN). While McClellan–Palomar Airport (CLD) is closer, it’s not a major airport.
  • To access San Diego International Airport, you can use a bicycle. The airport offers free bicycle lockers, but requires a $25 deposit, which is refundable. Also, you can catch an Uber to the airport or use car rental services.
  • If you’re using your car to get to San Diego International Airport, there’s a parking service, which costs approximately $13 per day, and includes a shuttle service to San Diego.
  • For arrivals at Denver, you can use Denver International Airport (DEN). From the airport, you can access downtown Denver via train, car rental, Uber, or shuttle service.
  • When you arrive in Denver, you’ll find hotels near Denver International Airport. Most hotels are about 10 miles away and have a shuttle service to help you get there.
  • Denver International Airport also supports sustainability by providing water bottle filling stations in all three concourses. Each concourse has four bottle filling stations.
  • Throughout the airport, you can use free Wi-Fi. You simply need to enable your wireless connection and check for “Den Airport Free Wi-Fi.” Click connect to the network as there is no password needed.
See more tips

Prefer to fly non-stop from San Diego to Denver?

Find which airlines fly direct from San Diego to Denver Intl, which days they fly and book direct flights.

Nonstop departures

San Diego to Denver Intl

Monday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Tuesday

Air Canada, Frontier, Lufthansa, +3 more

Air Canada, Frontier, +4 more

Wednesday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Thursday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Friday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Sunday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

See more direct flights

Nonstop returns

Denver Intl to San Diego

Monday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Tuesday

Air Canada, Frontier, Lufthansa, +3 more

Air Canada, Frontier, +4 more

Wednesday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Thursday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Friday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Sunday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

See more direct flights
See more direct flights

Top 5 airlines serving from San Diego to Denver

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to Denver? 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 11028 reviews
7.9comfort
7.5food
8.2boarding
8.0entertainment
8.6crew
Airline reviews

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

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

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).

You need to be a hacker to get the (Free) WiFi

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.

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.

Staff friendly and app worked really well. Modest delays were frustrating

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

Kayak does not know that spirit airlines charged me $70 to fly. But the bag check-in was $89 each way. This is false advertising to lure people. Spirit airlines sends bunch of emails after flight purchases to buy wifi, better seats, priority boarding, secure reserved seats. This is false advertising. Up front pricing. I would of flown jet blue or Alaska airlines.

One hour late taking off. Concerning, very hard landing. Uncomfortable seats with no recline. Extremely slow baggage claim. Very professional, knowledgeable flight attendants. Brand new, very clean plane.

Can’t say there was anything I particularly liked. Seats were very tight, leather wrapped plastic. I followed up a much longer and cheaper trip from Honolulu on southwest, everything was phenomenal, this flight was the exact opposite. Blows my mind they charge for water of all things. One of the attendants seemed very rude, I watched a taller gentleman a couple rows forward with his knees pressed into the back of the seat ahead, while the woman in that seat leaned forward the entire flight, I’m sure because she could feel his knees. I’ll be avoiding spirit like the plague from here forward.

Didn’t make the connecting flight due to a delay on our first flight.

I felt scam to have to pay $50 additional for my carry on luggage which was free for my other airline.

Enjoyed the experience, on time flights, friendly staff the WiFi was intros d kept cutting out.

Awful experience. Both flights were delayed several times with weather but also crew members being the official cause. The vouchers are unusable and insufficient ($50 voucher to fly the same crappy airline is a joke for putting me on a red-eye that landed at 3:00 am). The aircrafts were old and uncomfortable (have a real pocket on the seat, for crying out loud!).

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

It wasn’t as horrible as I would have expected, however, to not provide water and change so much for bags is a ripoff to say the least.

I was penalized for a mistake made by your team

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.

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!

Xmas Day- Flights were on time for departure and arrival, baggage check in and boarding process were hassle free, baggage also arrived without any delay. Satisfied customer on this journey.

Book cheap flights from San Diego to Denver

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Diego to Denver found on KAYAK in the last 72 hours.
5/22Wed
nonstopFrontier
2h 28mSAN-DEN
$29
5/8Wed
nonstopFrontier
2h 23mSAN-DEN
$30
5/25Sat
1 stopDelta
4h 58mSAN-DEN
$88
5/25Sat
1 stopDelta
4h 58mSAN-DEN
$98
8/10Sat
1 stopAmerican Airlines
4h 22mSAN-DEN
$99
5/22Wed
nonstopUnited Airlines
2h 26mSAN-DEN
$100
6/15Sat
1 stopAmerican Airlines
4h 33mSAN-DEN
$104
5/11Sat
2 stops
9h 10mSAN-DEN
$105
6/3Mon
2 stops
21h 09mSAN-DEN
$123
5/7Tue
nonstopUnited Airlines
2h 26mSAN-DEN
$140

Search by stops

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Search by price

Last minute flights from San Diego to Denver

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from San Diego to Denver that are departing in the next 10 days.
4/27Sat
nonstopFrontier
2h 32mSAN-DEN
4/28Sun
multi-stopFrontier
23h 40mDEN-SAN
$178
4/25Thu
multi-stopFrontier
12h 07mSAN-DEN
4/26Fri
nonstopFrontier
2h 33mDEN-SAN
$179
4/26Fri
nonstopFrontier
2h 24mSAN-DEN
4/27Sat
multi-stopFrontier
13h 10mDEN-SAN
$186
4/25Thu
multi-stop
16h 20mSAN-DEN
4/27Sat
multi-stop
14h 06mDEN-SAN
$407
4/25Thu
multi-stop
16h 20mSAN-DEN
4/27Sat
multi-stop
25h 42mDEN-SAN
$432
4/27Sat
multi-stopAlaska Airlines
7h 21mSAN-DEN
4/30Tue
multi-stopAlaska Airlines
15h 25mDEN-SAN
$586
4/24Wed
multi-stopUnited Airlines
6h 55mSAN-DEN
5/20Mon
multi-stopUnited Airlines
4h 37mDEN-SAN
$597
4/24Wed
multi-stopUnited Airlines
6h 55mSAN-DEN
5/23Thu
multi-stopUnited Airlines
5h 25mDEN-SAN
$631
4/27Sat
multi-stopAlaska Airlines
15h 11mSAN-DEN
4/30Tue
multi-stopAlaska Airlines
11h 15mDEN-SAN
$759
4/24Wed
multi-stopAmerican Airlines
7h 07mSAN-DEN
5/23Thu
multi-stopAmerican Airlines
9h 26mDEN-SAN
$795

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San Diego - Denver Flights

Departure:

San Diego (SAN)United States

Destination:

Denver (DEN)United States

Return flight deals:

Denver - San Diego

Cabin classes:

$637
$677
$433
$61

Browse destinations:

Compare transportation modes for San Diego to Denver

Average priceAverage duration
Flights$7902h 23m
Buses$15329h 55m