What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on San Diego to Denver flights?

According to our data, Sun Country Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

How often are flights from San Diego to Denver delayed?

Historically, on average around 16% of flights between San Diego and Denver have experienced a delay on any given week. The average delay length over the past 12 months has been 141 minutes.

How many flights depart from San Diego to Denver on average per day?

As of November 2025, there are 25 flights per day flying from San Diego to Denver. The most common time of day flights depart is 6:00AM, with 45% of flights taking off at noon.

What is the most punctual flight time for San Diego to Denver flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

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 58% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 8 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from San Diego to Denver Intl?

Alaska Airlines and United Airlines are the most popular carriers operating from San Diego to Denver Intl

How many flights depart from San Diego to Denver on average per week?

As of November 2025, 177 flights take off from San Diego and land in Denver each week. The most common flight departure day for this route is Fri, with 20% of weekly flights taking off on this day.

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 5 as of November 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.

$47 Cheap Flights from San Diego to Denver in 2025/26

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7:00 am - 10:36 amSAN-DEN

2h 36mnonstop

6:05 pm - 7:37 pmDEN-SAN

2h 32mnonstop

$58Frontier

Find Deal

mié., ene. 7 - lun., ene. 12

6:25 am - 10:03 amSAN-DEN

2h 38mnonstop

10:29 pm - 11:59 pmDEN-SAN

2h 30mnonstop

$59Frontier

Find Deal

jue., dic. 18 - sáb., dic. 20

6:30 am - 10:05 amSAN-DEN

2h 35mnonstop

9:10 am - 10:54 amDEN-SAN

2h 44mnonstop

$62Frontier

Find Deal

vie., feb. 6 - lun., feb. 9

6:34 am - 10:12 amSAN-DEN

2h 38mnonstop

10:29 pm - 11:59 pmDEN-SAN

2h 30mnonstop

$63Frontier

Find Deal

mié., dic. 17 - mié., dic. 31

6:25 am - 10:03 amSAN-DEN

2h 38mnonstop

5:43 pm - 7:15 pmDEN-SAN

2h 32mnonstop

$64Frontier

Find Deal

jue., dic. 18 - vie., dic. 19

6:34 am - 10:12 amSAN-DEN

2h 38mnonstop

5:43 pm - 7:15 pmDEN-SAN

2h 32mnonstop

$67Frontier

Find Deal

sáb., dic. 13 - vie., dic. 19

6:34 am - 10:12 amSAN-DEN

2h 38mnonstop

10:29 pm - 11:59 pmDEN-SAN

2h 30mnonstop

$68Frontier

Find Deal

mié., dic. 17 - jue., ene. 1

6:34 am - 10:12 amSAN-DEN

2h 38mnonstop

5:43 pm - 7:15 pmDEN-SAN

2h 32mnonstop

$69Frontier

Find Deal

mar., dic. 16 - vie., dic. 19

6:25 am - 10:03 amSAN-DEN

2h 38mnonstop

10:29 pm - 11:59 pmDEN-SAN

2h 30mnonstop

$72Frontier

Find Deal

jue., dic. 18 - lun., dic. 29

6:34 am - 10:12 amSAN-DEN

2h 38mnonstop

10:29 pm - 11:59 pmDEN-SAN

2h 30mnonstop

$76Frontier

Find Deal

mié., dic. 17 - lun., dic. 29

Frontier flights from San Diego to Denver

Our best Frontier deals on San Diego to Denver flight tickets

Frontier

Jan 7

SAN7:00 amSan Diego

2h 36m

DEN10:36 amDenver Intl

Jan 11

DEN10:29 pmDenver Intl

2h 30m

SAN11:59 pmSan Diego

$58

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Frontier

Dec 18

SAN6:25 amSan Diego

2h 38m

DEN10:03 amDenver Intl

Dec 20

DEN10:29 pmDenver Intl

2h 30m

SAN11:59 pmSan Diego

$59

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Frontier

Feb 6

SAN6:30 amSan Diego

2h 35m

DEN10:05 amDenver Intl

Feb 9

DEN9:10 amDenver Intl

2h 44m

SAN10:54 amSan Diego

$62

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Fly from

Fly to

Route

Depart

Return

Price

San DiegoDenver

SAN - DEN

SANDEN

San Diego

mié. 1/7

7:00 am-10:36 am

Nonstop2h 36m

Denver Intl

lun. 1/12

6:05 pm-7:37 pm

Nonstop2h 32m

$58

San DiegoDenver

SAN - DEN

SANDEN

San Diego

jue. 12/18

6:25 am-10:03 am

Nonstop2h 38m

Denver Intl

sáb. 12/20

10:29 pm-11:59 pm

Nonstop2h 30m

$59

San DiegoDenver

SAN - DEN

SANDEN

San Diego

vie. 2/6

6:30 am-10:05 am

Nonstop2h 35m

Denver Intl

lun. 2/9

9:10 am-10:54 am

Nonstop2h 44m

$62

San DiegoDenver

SAN - DEN

SANDEN

San Diego

mié. 12/17

6:34 am-10:12 am

Nonstop2h 38m

Denver Intl

mié. 12/31

10:29 pm-11:59 pm

Nonstop2h 30m

$63

San DiegoDenver

SAN - DEN

SANDEN

San Diego

jue. 12/18

6:25 am-10:03 am

Nonstop2h 38m

Denver Intl

vie. 12/19

5:43 pm-7:15 pm

Nonstop2h 32m

$64

San DiegoDenver

SAN - DEN

SANDEN

San Diego

sáb. 12/13

6:34 am-10:12 am

Nonstop2h 38m

Denver Intl

vie. 12/19

5:43 pm-7:15 pm

Nonstop2h 32m

$67

San DiegoDenver

SAN - DEN

SANDEN

San Diego

mié. 12/17

6:34 am-10:12 am

Nonstop2h 38m

Denver Intl

jue. 1/1

10:29 pm-11:59 pm

Nonstop2h 30m

$68

San DiegoDenver

SAN - DEN

SANDEN

San Diego

mar. 12/16

6:34 am-10:12 am

Nonstop2h 38m

Denver Intl

vie. 12/19

5:43 pm-7:15 pm

Nonstop2h 32m

$69

San DiegoDenver

SAN - DEN

SANDEN

San Diego

jue. 12/18

6:25 am-10:03 am

Nonstop2h 38m

Denver Intl

lun. 12/29

10:29 pm-11:59 pm

Nonstop2h 30m

$72

San DiegoDenver

SAN - DEN

SANDEN

San Diego

mié. 12/17

6:34 am-10:12 am

Nonstop2h 38m

Denver Intl

lun. 12/29

10:29 pm-11:59 pm

Nonstop2h 30m

$76

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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

Prices

Airlines

Delays

Other information

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 $134, 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 $148.

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 Friday when prices can be found for as low as $269. 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 $327.

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 $212. Flights in the afternoon are often more expensive with an average ticket price of $310.

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 $186 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 $150 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 November 2025, prices for San Diego to Denver flights are approximately 18% 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	$101
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 $101. The best round-trip flight deal from San Diego to Denver found on momondo in the last 72 hours is $165.

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)

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 22m 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 5 as of November 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 18.41% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 14.45%, Boeing 737 MAX 8 with 13.25%, and Airbus A320neo with 8.33%.
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 (63% of total bookings). The next most popular airlines are United Airlines (20%), Southwest (13%), and Alaska Airlines (3%).

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
Frontier	PriceFrom $66	Free Cancellation	Rating 5.8 3,096 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $68	Free Cancellation	Rating 7.8 2,813 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $101	Free Cancellation	Rating 8.0 11,340 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $127	Free Cancellation	Rating 8.0 4,252 reviews	Search Southwest flights
United Airlines	PriceFrom $150	Free Cancellation	Rating 7.4 9,038 reviews	Search United Airlines flights

Alaska Airlines Flights From San Diego to Denver
Alaska Airlines flight deals from San Diego to Denver start from $101 round-trip. Over the 20 Alaska Airlines flights for this route in a normal week, average airfare is usually $190 round-trip - but some users have found much cheaper deals with momondo.
Southwest Flights From San Diego to Denver
$127 is the best Southwest flight deal from San Diego to Denver found on momondo over the last 72 hours. The average Southwest ticket price found was closer to $263, however, with flight time and availability significantly affecting the price. Southwest (8.0/10 from 4,252 user reviews) flies into Denver from San Diego 45 times in an average week so prices can vary.

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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

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Cheap flights from San Diego to Denver from $47

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 12/9. 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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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?

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 Friday when prices can be found for as low as $269. 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 $327.

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 $212. Flights in the afternoon are often more expensive with an average ticket price of $310.

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?

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 November 2025, prices for San Diego to Denver flights are approximately 18% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from San Diego to Denver Intl?

Alaska Airlines and United Airlines are the most popular carriers operating from San Diego to Denver Intl

What airlines fly to Denver?

How often are flights from San Diego to Denver delayed?

Historically, on average around 16% of flights between San Diego and Denver have experienced a delay on any given week. The average delay length over the past 12 months has been 141 minutes.

What is the most punctual flight time for San Diego to Denver flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on San Diego to Denver flights?

According to our data, Sun Country Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

How many flights depart from San Diego to Denver on average per day?

As of November 2025, there are 25 flights per day flying from San Diego to Denver. The most common time of day flights depart is 6:00AM, with 45% of flights taking off at noon.

How many flights depart from San Diego to Denver on average per week?

As of November 2025, 177 flights take off from San Diego and land in Denver each week. The most common flight departure day for this route is Fri, with 20% 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

Best Price Found

Fastest flight time

Direct flights

Airports in Denver

How far is San Diego to Denver Intl by plane?

When did momondo last update prices for flights from San Diego Airport to Denver Intl Airport?

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?

What documentation or ID do you need to fly to Denver Intl Airport?

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

Alaska Airlines Flights From San Diego to Denver

Southwest Flights From San Diego to Denver

Traveling to a place near Denver?

Why use momondo?

Why should I use momondo to find a flight deal from San Diego to Denver?

Can I find flights from San Diego to Denver with flexible booking policies on momondo?

How can momondo help me find flights 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?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States