Cheap flights from San Diego to Denver (SAN - DEN)

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The best prices from San Diego to Denver Intl are usually found in August or January, booked 16 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

How to find the cheapest flight from
San Diego (SAN) to Denver (DEN)

All the information you need to plan the best SAN to DEN flight in 2021: compare San Diego to Denver flight prices with the expected peak season, weather and rainfall in Denver.
SAN - DEN
Price
$136 - $247
DEN
Temperature
30.2 - 73.4 °F
DEN
Precipitation
0.5 - 2.3 inches

Popular in

December

High demand for flights, 30% potential price rise

Cheapest in

August

Best time to find cheap flights, 21% potential price drop

Round-trip from

C$ 136

From San Diego to Denver Intl

One-way from

$47

One-way flight from San Diego to Denver Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from San Diego to Denver?

Users have found that flying from San Diego to Denver on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

To save up to 8% on this flight, we recommend booking at least 16 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from San Diego to Denver from $158 1-2 weeks out and tickets from $177 for flights departing within the next 72 hours.

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

The best pricing can be found in the month of August. Prices to Denver from San Diego average $172. You can even find prices in August for less than $172, as users have found deals to Denver from as low as $96. The month of December appears to be one of the more expensive times to travel to Denver from San Diego. Flying in the targeted month can save you up to 43%.

When is the cheapest time to fly from San Diego to Denver (SAN - DEN)?

It’s typically best to fly out from San Diego to Denver at noon. Doing so could potentially save you 34% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap flights from San Diego to Denver in September, October 2021

The best prices found for SAN to DEN flights for September, October
5 Oct - 9 Oct
$64pp
SAN
San Diego
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
3 Oct - 8 Oct
$67pp
SAN
San Diego
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
4 Oct - 9 Oct
$71pp
SAN
San Diego
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SAN
San Diego

San Diego to Denver 2021 flight deals

Cheap flights to Denver from San Diego found for this year
5 Oct - 9 Oct
$64pp
SAN
San Diego
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
3 Oct - 8 Oct
$67pp
SAN
San Diego
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
1 Dec - 7 Dec
$69pp
SAN
San Diego
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SAN
San Diego

Non-stop flights to Denver from San Diego

Save time with San Diego to Denver direct flight deals
29 Oct - 2 Nov
$84pp
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
28 Oct - 31 Oct
$86pp
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego
3 Nov - 7 Nov
$93pp
SAN
San Diego
Frontier
Non-Stop
DEN
Denver Intl
DEN
Denver Intl
Frontier
Non-Stop
SAN
San Diego

Last minute flights from San Diego to Denver

Late deals on round-trip flights to Denver from San Diego, departing today and this week
30 Sep - 4 Oct
$67pp
SAN
San Diego
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
29 Sep - 1 Oct
$72pp
SAN
San Diego
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
30 Sep - 14 Oct
$74pp
SAN
San Diego
Spirit Airlines
 
1 STOP
DEN
Denver Intl
DEN
Denver Intl
Spirit Airlines
 
1 STOP
SAN
San Diego

One-way flights to Denver Intl from San Diego

The cheapest one-way flights from San Diego to Denver
6:20 pm - 3:32 pm
Multiple Airlines
1 Stop
20h 12m
SAN - DEN
Multiple Airlines
$47
Kiwi.com
7:00 am - 6:48 pm
Spirit Airlines
3 Stops
34h 48m
SAN - DEN
Spirit Airlines
$68
FareScan
2:40 pm - 4:56 am
Frontier
1 Stop
13h 16m
SAN - DEN
Frontier
$69
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">San Diego</span> to <span class="emphasized">Denver</span> flights.

Flight FAQs

From San Diego to Denver

What airports do I use to fly from San Diego to Denver?

You will need to book a flight from San Diego to Denver Intl if you want to fly from San Diego to Denver. At least 7 different airlines have flights from San Diego (SAN) to Denver Intl (DEN) on a regular basis. There are 19 flights to Denver from the San Diego airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SAN to DEN to be around 2h 13m.

Which airlines flying from San Diego to Denver Intl have flexible cancellations due to COVID-19?

Some of the carriers operating flights from San Diego to Denver Intl that may be offering flexible cancellation policies are Frontier, United Airlines, and Spirit Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Are flight prices decreasing from San Diego to Denver due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both San Diego and Denver for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from San Diego to Denver for under $100 on Cheapflights?

Yes, there are multiple flights from San Diego to Denver for under $100. The cheapest flight booked recently is on Spirit Airlines for just $64, but on average you can expect to pay $77.

Are there nonstop flights from San Diego to Denver for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from San Diego to Denver under $100. A good price for a nonstop flight from San Diego to Denver is less than $103.

Are there last-minute flights available from San Diego to Denver for under $100?

There are currently 20+ open flights from San Diego to Denver within the next 7 days for less than $100.

How popular is this San Diego to Denver flight route?

This flight path from San Diego to Denver Intl was viewed by 228 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines flying from San Diego to Denver round-trip?

Spirit Airlines, at $64, was found to be the cheapest airline from San Diego to Denver. An alternate airline flying to your destination would be Frontier. Spirit Airlines is priced at 62% lower than the current average price of a flight leaving 3 months from now.

What are the most reliable airlines from San Diego to Denver?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Diego to Denver on time: Frontier(93%), Air Canada(80%), United Airlines(73%.)

What are the most popular airlines that fly from San Diego to Denver?

The most popular airlines flying from San Diego to Denver are Major Airline, American Airlines and Delta. Something to consider prior to booking your flight.

What are the cheapest flights from San Diego to Denver?

While on average a flight from San Diego to Denver is generally $405, our data shows the cheapest flight currently is $63. When looking at the most popular route, (San Diego - Denver Intl), you can expect to pay $64 for that flight.

COVID Restrictions

View COVID Travel Restrictions for Denver, CO

Do I need a COVID test to fly to Denver from San Diego?

Information is based on travel restrictions for travel to Denver Intl within the United States

Most visitors from San Diego need to provide a negative COVID-19 test result and/or quarantine to enter Denver Intl.

COVID-19 testing requirements
Visitors from San Diego must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Denver Intl.

Quarantine requirements
Visitors from San Diego are not required to quarantine after entering Denver Intl.

Do I need a test to fly back to San Diego from Denver?

Returning to San Diego from Denver Intl

COVID-19 testing requirements
Visitors from Denver Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to San Diego.

Quarantine requirements
Visitors from Denver Intl are not required to quarantine after entering San Diego.

Hide COVID Travel Restrictions for Denver, CO

Alternative routes for San Diego to Denver

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Denver

Things to know before you go - useful duration and weather info for your trip from San Diego to Denver.
Flight duration from SAN to DEN
2h 30m
Average temperature for September in Denver
78.8 °F
Avg rainfall for September in Denver
1.1 ″

Airports servicing San Diego

Airports servicing Denver

Top 6 airlines flying from San Diego to Denver Intl

The chart below displays the airlines Cheapflights users traveling from San Diego to Denver choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
American Airlines
$57 $177 No cancel fee 71%
Spirit Airlines
$63 $159 No cancel fee 65%
Frontier
$77 $174 No cancel fee 62%
Delta
$82 $161 No cancel fee N/A
United Airlines
$88 $240 No cancel fee 69%
Southwest
$130 $340 No cancel fee 63%

Hourly flight availability from San Diego to Denver

See what time of day planes typically take off from San Diego towards Denver.
Morning 6 AM to noon 36% of SAN to DEN departures
Afternoon Noon to 6 PM 34% of SAN to DEN departures
Early morning Midnight to 6 AM 28% of SAN to DEN departures
Evening 6 PM to midnight 2% of SAN to DEN departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from San Diego to Denver
See how many times per day planes take to the skies headed from San Diego to Denver.
Sunday
28 daily flights
Monday
22 daily flights
Tuesday
11 daily flights
Wednesday
12 daily flights
Thursday
20 daily flights
Friday
21 daily flights
Saturday
21 daily flights
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