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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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0 bags

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Find the cheapest flights from San Diego to Denver

Cheap round-trip flights

Frontier Logo
7:06 pm - 4:00 amSAN-DEN
7h 54m1 stop
Frontier Logo
8:45 pm - 10:08 pmDEN-SAN
2h 23mnonstop
$87Frontier
Find Deal
Sat, Aug 16 - Sat, Aug 23
Frontier Logo
6:25 am - 10:02 amSAN-DEN
2h 37mnonstop
Frontier Logo
9:39 am - 11:08 amDEN-SAN
2h 29mnonstop
$88Frontier
Find Deal
Wed, Oct 22 - Mon, Oct 27
Frontier Logo
7:04 pm - 4:00 amSAN-DEN
7h 56m1 stop
Frontier Logo
1:33 pm - 6:10 pmDEN-SAN
5h 37m1 stop
$90Frontier
Find Deal
Thu, Jul 24 - Mon, Jul 28
Frontier Logo
10:15 am - 4:31 pmSAN-DEN
5h 16m1 stop
Frontier Logo
8:45 pm - 10:08 pmDEN-SAN
2h 23mnonstop
$91Frontier
Find Deal
Thu, Aug 28 - Tue, Sep 2
Frontier Logo
1:03 pm - 6:58 pmSAN-DEN
4h 55m1 stop
Frontier Logo
9:36 pm - 11:02 pmDEN-SAN
2h 26mnonstop
$92Frontier
Find Deal
Fri, Aug 8 - Tue, Aug 12
Frontier Logo
1:03 pm - 11:09 pmSAN-DEN
9h 06m1 stop
Frontier Logo
9:36 pm - 11:02 pmDEN-SAN
2h 26mnonstop
$93Frontier
Find Deal
Thu, Aug 7 - Tue, Aug 12
Frontier Logo
7:06 pm - 4:00 amSAN-DEN
7h 54m1 stop
Frontier Logo
11:04 am - 9:22 amDEN-SAN
23h 18m1 stop
$95Frontier
Find Deal
Sat, Aug 16 - Sat, Aug 23
Frontier Logo
6:25 am - 10:02 amSAN-DEN
2h 37mnonstop
Frontier Logo
9:39 am - 11:08 amDEN-SAN
2h 29mnonstop
$97Frontier
Find Deal
Fri, Oct 10 - Mon, Oct 13
Frontier Logo
9:03 pm - 12:38 amSAN-DEN
2h 35mnonstop
Frontier Logo
8:50 pm - 10:24 pmDEN-SAN
2h 34mnonstop
$98Frontier
Find Deal
Thu, Sep 18 - Wed, Sep 24
Frontier Logo
11:25 am - 3:06 pmSAN-DEN
2h 41mnonstop
Frontier Logo
8:45 pm - 10:08 pmDEN-SAN
2h 23mnonstop
$99Frontier
Find Deal
Thu, Aug 21 - Sat, Aug 30

Frontier flights from San Diego to Denver

Our best Frontier deals on San Diego to Denver flight tickets
Frontier
Aug 16
SAN7:06 pmSan Diego
7h 54m
1 stop
DEN4:00 amDenver Intl
Aug 23
DEN8:45 pmDenver Intl
2h 23m
SAN10:08 pmSan Diego
Frontier
Oct 22
SAN6:25 amSan Diego
2h 37m
DEN10:02 amDenver Intl
Oct 27
DEN9:39 amDenver Intl
2h 29m
SAN11:08 amSan Diego
Frontier
Jul 24
SAN7:04 pmSan Diego
7h 56m
1 stop
DEN4:00 amDenver Intl
Jul 28
DEN1:33 pmDenver Intl
5h 37m
1 stop
SAN6:10 pmSan Diego

See travel insights to Denver from

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.

How have San Diego to Denver flight prices changed over time?

As of July 2025, prices for San Diego to Denver flights are approximately 0% more expensive when compared to flights at the same time last year.

When to book flights from San Diego to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from San Diego to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Best Price Found

$36

Fastest flight time

2h 18m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from San Diego in the past 72 hours is $36. The best round-trip flight deal from San Diego to Denver found on momondo in the last 72 hours is $87.
The fastest flight from San Diego to Denver takes 2h 18m
Direct flights go from San Diego to Denver every day.
There is 1 airport near Denver: Denver Intl (DEN)

  • 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?

  • 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?

  • What is the most popular airline from San Diego to Denver?


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
FrontierPriceFrom $58Free CancellationRating
5.9
3,286 reviews
Search Frontier flights
United AirlinesPriceFrom $166Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $167Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $173Free CancellationRating
8.0
4,266 reviews
Search Southwest flights
DeltaPriceFrom $196Free CancellationRating
8.0
7,982 reviews
Search Delta flights
American AirlinesPriceFrom $197Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • 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 locations
Estes Park
Breckenridge
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Longmont
Boulder
Lakewood
Manitou Springs
Greeley
Westminster
Thornton
Winter Park
Silverthorne
Copper Mountain
Grand Lake
Golden
Frisco

Why 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.


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1 adult
Tue 7/8
Tue 7/15

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