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Cheap flights from San Diego to Denver from $64

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 10/15. 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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Find the cheapest flights from San Diego to Denver

Cheap round-trip flights

Frontier Logo
6:35 am - 10:08 amSAN-DEN
2h 33mnonstop
Frontier Logo
10:29 pm - 11:53 pmDEN-SAN
2h 24mnonstop
$89Frontier
Find Deal
Fri, Sep 5 - Mon, Sep 8
Frontier Logo
7:15 am - 10:50 amSAN-DEN
2h 35mnonstop
Frontier Logo
6:00 am - 9:25 amDEN-SAN
4h 25m1 stop
$90Frontier
Find Deal
Sat, Sep 27 - Mon, Sep 29
Frontier Logo
10:16 am - 8:03 pmSAN-DEN
8h 47m1 stop
Frontier Logo
9:38 am - 11:09 amDEN-SAN
2h 31mnonstop
$92Frontier
Find Deal
Sat, Sep 27 - Sun, Sep 28
Frontier Logo
7:15 am - 10:50 amSAN-DEN
2h 35mnonstop
Frontier Logo
9:38 am - 11:09 amDEN-SAN
2h 31mnonstop
$94Frontier
Find Deal
Wed, Sep 17 - Sun, Sep 21
Frontier Logo
9:14 am - 2:56 pmSAN-DEN
4h 42m1 stop
Frontier Logo
9:48 am - 11:17 amDEN-SAN
2h 29mnonstop
$95Frontier
Find Deal
Thu, Nov 13 - Mon, Nov 17
Frontier Logo
7:15 am - 10:50 amSAN-DEN
2h 35mnonstop
Frontier Logo
9:38 am - 11:09 amDEN-SAN
2h 31mnonstop
$96Frontier
Find Deal
Wed, Sep 17 - Sun, Sep 21
Southwest Logo
5:15 pm - 8:35 pmSAN-DEN
2h 20mnonstop
Southwest Logo
1:30 pm - 4:55 pmDEN-SAN
4h 25m1 stop
$122Southwest
Find Deal
Tue, Dec 2 - Wed, Dec 3
Southwest Logo
4:30 pm - 7:50 pmSAN-DEN
2h 20mnonstop
Southwest Logo
10:40 am - 5:40 pmDEN-SAN
8h 00m2 stops
$127Southwest
Find Deal
Sat, Oct 25 - Tue, Oct 28
Southwest Logo
5:15 pm - 8:35 pmSAN-DEN
2h 20mnonstop
Southwest Logo
1:30 pm - 4:55 pmDEN-SAN
4h 25m1 stop
$132Southwest
Find Deal
Tue, Dec 2 - Thu, Dec 4
Logo
6:35 am - 10:08 amSAN-DEN
2h 33mnonstop
Logo
10:44 pm - 12:31 pmDEN-SAN
14h 47m2 stops
$135
Find Deal
Thu, Sep 25 - Mon, Sep 29

Frontier flights from San Diego to Denver

Our best Frontier deals on San Diego to Denver flight tickets
Frontier
Sep 5
SAN6:35 amSan Diego
2h 33m
DEN10:08 amDenver Intl
Sep 8
DEN10:29 pmDenver Intl
2h 24m
SAN11:53 pmSan Diego
$89
Find similar
Frontier
Sep 27
SAN7:15 amSan Diego
2h 35m
DEN10:50 amDenver Intl
Sep 29
DEN6:00 amDenver Intl
4h 25m
1 stop
SAN9:25 amSan Diego
$90
Find similar
Frontier
Sep 27
SAN10:16 amSan Diego
8h 47m
1 stop
DEN8:03 pmDenver Intl
Sep 28
DEN9:38 amDenver Intl
2h 31m
SAN11:09 amSan Diego
$92
Find similar

Southwest flights from San Diego to Denver

Our best Southwest deals on San Diego to Denver flight tickets
Southwest
Dec 2
SAN5:15 pmSan Diego
2h 20m
DEN8:35 pmDenver Intl
Dec 3
DEN1:30 pmDenver Intl
4h 25m
1 stop
SAN4:55 pmSan Diego
$122
Find similar
Southwest
Oct 25
SAN4:30 pmSan Diego
2h 20m
DEN7:50 pmDenver Intl
Oct 28
DEN10:40 amDenver Intl
8h 00m
2 stops
SAN5:40 pmSan Diego
$127
Find similar
Southwest
Dec 2
SAN5:15 pmSan Diego
2h 20m
DEN8:35 pmDenver Intl
Dec 4
DEN1:30 pmDenver Intl
4h 25m
1 stop
SAN4:55 pmSan Diego
$132
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Diego to Denver 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, momondo users made 832,500 searches. Data last updated August 21, 2025.
Use the filters below to find and compare flights from San Diego to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Fri 9/5

6:35 am-10:08 am

Nonstop2h 33m

Denver Intl

Mon 9/8

10:29 pm-11:53 pm

Nonstop2h 24m

$89

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 9/27

7:15 am-10:50 am

Nonstop2h 35m

Denver Intl

Mon 9/29

6:00 am-9:25 am

1 stop4h 25m

$90

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 9/27

10:16 am-8:03 pm

1 stop8h 47m

Denver Intl

Sun 9/28

9:38 am-11:09 am

Nonstop2h 31m

$92

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 9/17

7:15 am-10:50 am

Nonstop2h 35m

Denver Intl

Sun 9/21

9:38 am-11:09 am

Nonstop2h 31m

$94

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Thu 11/13

9:14 am-2:56 pm

1 stop4h 42m

Denver Intl

Mon 11/17

9:48 am-11:17 am

Nonstop2h 29m

$95

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 9/17

7:15 am-10:50 am

Nonstop2h 35m

Denver Intl

Sun 9/21

9:38 am-11:09 am

Nonstop2h 31m

$96

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Tue 12/2

5:15 pm-8:35 pm

Nonstop2h 20m

Denver Intl

Wed 12/3

1:30 pm-4:55 pm

1 stop4h 25m

$122

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 10/25

4:30 pm-7:50 pm

Nonstop2h 20m

Denver Intl

Tue 10/28

10:40 am-5:40 pm

2 stops8h 00m

$127

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Tue 12/2

5:15 pm-8:35 pm

Nonstop2h 20m

Denver Intl

Thu 12/4

1:30 pm-4:55 pm

1 stop4h 25m

$132

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Thu 9/25

6:35 am-10:08 am

Nonstop2h 33m

Denver Intl

Mon 9/29

10:44 pm-12:31 pm

2 stops14h 47m

$135

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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 $275. 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 $337.

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 $197. Flights in the afternoon are often more expensive with an average ticket price of $329.

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 $152 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.

Can stopping save me money on San Diego to Denver flights?

No. A direct flight is the cheapest option for a flight between San Diego to Denver.

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

As of August 2025, prices for San Diego to Denver flights are approximately 36% cheaper 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

$129

Fastest flight time

2h 13m

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 $129. The best round-trip flight deal from San Diego to Denver found on momondo in the last 72 hours is $158.
The fastest flight from San Diego to Denver takes 2h 13m
Direct flights go from San Diego to Denver every day.
There is 1 airport near Denver: Denver Intl (DEN)
Search flight deals

  • How far is San Diego to Denver Intl by plane?

    The distance between San Diego and Denver Intl is about 832.3 mi. 2h 20m 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 $66Free CancellationRating
5.8
3,207 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $98Free CancellationRating
7.8
2,672 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $137Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $157Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
United AirlinesPriceFrom $167Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
American AirlinesPriceFrom $197Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $206Free CancellationRating
7.9
7,981 reviews
Search Delta flights

  • Southwest Flights From San Diego to Denver

    Southwest flight deals from San Diego to Denver start from $157 round-trip. Over the 49 Southwest flights for this route in a normal week, average airfare is usually $270 round-trip - but some users have found much cheaper deals with momondo.

  • United Airlines Flights From San Diego to Denver

    $167 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 $308, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 8,930 user reviews) flies into Denver from San Diego 28 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
Manitou Springs
Lakewood
Greeley
Westminster
Thornton
Winter Park
Grand Lake
Copper Mountain
Silverthorne
Frisco
Centennial

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.

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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