Cheap flights from San Diego to Denver from $36
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Denver departing on 11/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier flights from San Diego to Denver
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How to get the cheapest flight ticket from San Diego to Denver
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between San Diego and Denver?
What is the cheapest month to fly to Denver?
The cheapest month to fly to Denver from San Diego is in January. Flight prices, which tend to average around $148, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in January, then you should wait until February to fly from San Diego, when ticket prices are also cheap, with an average price of $153.
What is the cheapest day to depart on your flight to Denver?
The cheapest day to depart on your flight to Denver is on a Saturday when prices can be found for as low as $276. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Monday, with ticket prices averaging around $347.
What is the cheapest time of day to depart on your flight to Denver?
The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $193. Flights in the afternoon are often more expensive with an average ticket price of $314.
What is the cheapest San Diego to Denver Intl flight route?
Fly from San Diego to Denver Intl for the best San Diego - Denver Intl flight prices
How far in advance should I book a flight to Denver?
You are more likely to see cheaper flights to Denver from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $194 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from San Diego for as low as $156 on momondo.
What cabin class options are available on San Diego to Denver Intl flights?
There are 4 cabin classes available to choose from on San Diego to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from San Diego to Denver Intl?
Frontier, Hawaiian Airlines, and Southwest are the most popular carriers operating from San Diego to Denver Intl
What airlines fly to Denver?
Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Denver from San Diego according to our data. Frontier is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 7 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.
How many flights depart from San Diego to Denver on average per day?
As of July 2025, there are 16 flights per day flying from San Diego to Denver. The most common time of day flights depart is 11:00AM, with 52% of flights taking off at noon.
How many flights depart from San Diego to Denver on average per week?
As of July 2025, 117 flights take off from San Diego and land in Denver each week. The most common flight departure day for this route is Thu, with 22% of weekly flights taking off on this day.
When to book flights from San Diego to Denver
Cheap San Diego to Denver (SAN to DEN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Diego to Denver
How far is San Diego to Denver Intl by plane?
The distance between San Diego and Denver Intl is about 832.3 mi. 2h 33m is a normal flight duration for this route.
When did momondo last update prices for flights from San Diego Airport to Denver Intl Airport?
Prices for flights from San Diego Airport to Denver Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from San Diego Airport to Denver Intl Airport?
The number of operators available for flights from San Diego Airport to Denver Intl Airport is 6 as of July 2025.
How old do you have to be to fly from San Diego Airport to Denver Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The necessary travel and health documents for your Denver Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from San Diego to Denver?
Based on momondo bookings for flights between San Diego and Denver, the leading plane model is Airbus A321neo, making up 16.50% of the total bookings. Other popular models include Boeing 737 MAX 8 with 16.33%, Boeing 737-800 with 12.28%, and Boeing 737-700 Passenger/BBJ1 (winglets) with 11.30%.
What is the most popular airline from San Diego to Denver?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Diego to Denver is Frontier (66% of total bookings). The next most popular airlines are United Airlines (23%), Southwest (11%), and Delta (0%).
Best airlines flying from San Diego to Denver
Compare and see reviews for airlines that fly from San Diego to Denver with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $58 | Free Cancellation | Rating 5.9 3,286 reviews | |||
| PriceFrom $166 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $167 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $173 | Free Cancellation | Rating 8.0 4,266 reviews | |||
| PriceFrom $196 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $197 | Free Cancellation | Rating 7.2 10,000 reviews |
Southwest Flights From San Diego to Denver
Southwest flight deals from San Diego to Denver start from $173 round-trip. Over the 30 Southwest flights for this route in a normal week, average airfare is usually $275 round-trip - but some users have found much cheaper deals with momondo.
United Airlines Flights From San Diego to Denver
$166 is the best United Airlines flight deal from San Diego to Denver found on momondo over the last 72 hours. The average United Airlines ticket price found was closer to $306, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 8,861 user reviews) flies into Denver from San Diego 33 times in an average week so prices can vary.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from San Diego to Denver?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Denver from San Diego.
Can I find flights from San Diego to Denver with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Denver from San Diego with this policy.
How can momondo help me find flights from San Diego to Denver?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Diego to Denver.
I’m not ready to book a flight from San Diego to Denver right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of San Diego to Denver flights. All you need is a valid email address and we will do the rest; it is that quick and easy.