Cheap flights from San Diego to Denver from £35
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/2. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from San Diego to Denver Intl are usually found in January or February, booked 65 days in advance, depart on a Wednesday or Monday and return on a Monday
Find flight deals from San Diego to Denver
Cheapest flights from San Diego to DenverExplore the most affordable flight options available from San Diego to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.
Explore the most affordable flight options available from San Diego to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.
Cheap flight deals from San Diego to Denver
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 28 October 2025.
Cheapflights Fare Finder
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
Wed 11/2
20:10-23:59
Nonstop2h 49m
Denver Intl
Sun 15/2
19:04-20:27
Nonstop2h 23m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sun 22/2
15:15-18:33
Nonstop2h 18m
Denver Intl
Thu 26/2
12:30-13:56
Nonstop2h 26m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Tue 18/11
08:15-11:34
Nonstop2h 19m
Denver Intl
Sun 23/11
06:00-07:34
Nonstop2h 34m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Tue 20/1
08:00-11:38
Nonstop2h 38m
Denver Intl
Thu 22/1
19:39-21:14
Nonstop2h 35m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Thu 20/11
16:00-21:35
1 stop4h 35m
Denver Intl
Sun 23/11
05:40-07:15
Nonstop2h 35m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Tue 30/12
20:50-00:15
Nonstop2h 25m
Denver Intl
Sun 4/1
05:40-09:00
1 stop4h 20m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Fri 19/12
19:40-00:35
1 stop3h 55m
Denver Intl
Mon 22/12
05:30-09:05
1 stop4h 35m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Wed 18/2
10:45-15:40
1 stop3h 55m
Denver Intl
Sat 21/2
19:40-22:55
1 stop4h 15m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sun 7/12
06:30-10:00
Nonstop2h 30m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Thu 12/2
18:55-22:21
Nonstop2h 26m
Best time to book a flight from San Diego to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from San Diego with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from San Diego to Denver
How far ahead should I book a flight from San Diego to Denver?
The best time to book flights from San Diego to Denver is 58 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from San Diego to Denver?
Currently, January is the cheapest month in which you can book a flight from San Diego to Denver (average of £18). Flying from San Diego to Denver in October is currently the most expensive (average of £50). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SAN to DEN?
When flying from San Diego to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 94% versus a flight at midday.
How often are flights from San Diego to Denver delayed?
About 15% of weekly flights between San Diego and Denver have experienced delays in the past year, with the average delay time being 142 minutes.
What is the most punctual flight time for San Diego to Denver flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Diego to Denver flights?
Over the past year, Sun Country Air have had the lowest number of delays on this route, with no flights being classified as delayed.
Related info for your journey
Find useful and relevant information for your journey from San Diego to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Diego to Denver
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How does Cheapflights help users find flights from San Diego to Denver?
Deals for San Diego to Denver flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from San Diego to Denver?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from San Diego to Denver.
Can Cheapflights find flights from San Diego to Denver with no change fees?
Yes! Cheapflights helps users easily find flights from San Diego to Denver with no change fees.
Can Cheapflights notify me if prices for flights from San Diego to Denver become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Denver from San Diego today and book when prices fit your budget.