£58 Cheap Flights from San Diego (SAN) to Denver (DEN)

View £58 flight on Tue, 19 May 2026Opens in a new window

Popular airlines from San Diego Intl. Airport (SAN) to Denver International Airport (DEN)

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Cheap Flights from San Diego (SAN) to Denver (DEN)

Prices were available within the past 7 days and start at £58 for one-way flights and £115 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 20 May - Wed, 27 May
SAN
San Diego
DEN
Denver
£115 Return, found 3 days ago
£115
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 20 May from San Diego to Denver, returning Wed, 27 May, priced at £115 found 3 days ago
Alaska Airlines
Tue, 19 May - Tue, 2 Jun
SAN
San Diego
DEN
Denver
£117 Return, found 2 days ago
£117
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 19 May from San Diego to Denver, returning Tue, 2 Jun, priced at £117 found 2 days ago
Alaska Airlines
Tue, 26 May - Sat, 6 Jun
SAN
San Diego
DEN
Denver
£138 Return, found 2 days ago
£138
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 26 May from San Diego to Denver, returning Sat, 6 Jun, priced at £138 found 2 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
SAN
San Diego
DEN
Denver
£141 Return, found 3 days ago
£141
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 20 May from San Diego to Denver, returning Wed, 27 May, priced at £141 found 3 days ago
Alaska Airlines
Fri, 15 May - Tue, 2 Jun
SAN
San Diego
DEN
Denver
£142 Return, found 2 days ago
£142
Return
found 2 days ago
Select Alaska Airlines flight, departing Fri, 15 May from San Diego to Denver, returning Tue, 2 Jun, priced at £142 found 2 days ago
Delta
Thu, 21 May - Sat, 30 May
SAN
San Diego
DEN
Denver
£146 Return, found 2 days ago
£146
Return
found 2 days ago
Select Delta flight, departing Thu, 21 May from San Diego to Denver, returning Sat, 30 May, priced at £146 found 2 days ago
Alaska Airlines
Tue, 9 Jun - Sat, 20 Jun
SAN
San Diego
DEN
Denver
£153 Return, found 2 days ago
£153
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 9 Jun from San Diego to Denver, returning Sat, 20 Jun, priced at £153 found 2 days ago
Alaska Airlines
Wed, 20 May - Wed, 27 May
SAN
San Diego
DEN
Denver
£164 Return, found 3 days ago
£164
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 20 May from San Diego to Denver, returning Wed, 27 May, priced at £164 found 3 days ago
Alaska Airlines
Tue, 26 May - Sun, 7 Jun
SAN
San Diego
DEN
Denver
£165 Return, found 2 days ago
£165
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 26 May from San Diego to Denver, returning Sun, 7 Jun, priced at £165 found 2 days ago
JetBlue Airways
Tue, 28 Jul - Wed, 29 Jul
SAN
San Diego
DEN
Denver
£446 Return, found 4 days ago
£446
Return
found 4 days ago
Select JetBlue Airways flight, departing Tue, 28 Jul from San Diego to Denver, returning Wed, 29 Jul, priced at £446 found 4 days ago

Alternative airports near Denver

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city centre is 32 minutes. Flights from £168
DEN
Denver Intl.
Cheapest
Average driving time to city centre32 min
Flights from £168

Frequently asked questions

How much does a flight from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) cost?
One-way flights typically cost between £80 and £743 and return flights often range between £279 and £1,303. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
January is typically the cheapest month to fly from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.), with average return fares of approximately £265. This is about 24% lower than the average price throughout the year. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. Other cheap months to fly from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) include February and October.
Which airlines fly direct from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
Enter SAN to DEN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
To find a cheap flight from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
The best airline to fly with from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) will differ from traveller to traveller. If you like to fly early, WN offers early morning flights. If price is the most important factor, F9 typically offers the lowest fares. WN offers the most daily flights from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.), which is brilliant if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
When planning your trip from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.), it's helpful to know that the cheapest months to fly are typically January and October, with average return flights around £265. The most popular months for travel are February and June, which means you'll find plenty of flight options during these times. Since there isn't a single month that is both cheapest and most popular, you can choose based on your priorities: opt for January or October for the best value, or February or June if having a wide selection of flights is most important to you.
How many flights per day from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
There are approximately 17 nonstop flights per day from San Diego Intl. (SAN) to Denver Intl. (DEN). For even more choice, look at flights that include layovers. You'll find around 160 connecting flights per day. Some common connection points include Sky Harbor Intl. (PHX), McCarran Intl. (LAS), and San Francisco Intl. (SFO).
What is the earliest flight from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
The earliest flight from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) typically departs at approximately 12:55 AM local time, operated by American Airlines. This is a seasonal service active in July. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
You'll find the most flights from San Diego Intl. (SAN) to Denver Intl. (DEN) on a Friday, with around 109 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Southwest Airlines, United Airlines, and American Airlines. Flight options are notably more on Fridays compared to other days of the week.
What are the most popular departure times for flights from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
The most popular departure times for flights from San Diego Intl. (SAN) to Denver Intl. (DEN) are in the morning, from 6am to 9am. About 35% of passengers prefer this time. Many major carriers, including Southwest Airlines, Frontier Airlines and Alaska Airlines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day and arrive in Denver with plenty of time for your activities.
How long does it take to fly from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
A nonstop flight from SAN to DEN typically takes around 2 hours 30 minutes, covering approximately 852 miles. Connecting flights on this route usually add 4 hours 30 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
Select the "Business class" and "First class" filters when looking for SAN to DEN flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How much is a business class flight from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
A direct, return business class ticket from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) typically costs between £1088 - £1633. You may also be able to find a cheaper business class journey between San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Anaa (AAA) (AAA) to Toronto, ON (YYZ-Pearson Intl.) (YYZ) if you opt for a connecting flight.
How do I earn miles on a San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) flight with Expedia?
It's easy to earn miles on a San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Denver from San Diego Intl. (SAN)?
If you're planning to travel to Denver from San Diego Intl. (SAN), you can fly directly into Denver Intl. (DEN) Some flights may connect through major hubs like Sky Harbor Intl. (PHX), McCarran Intl. (LAS), Sacramento Intl. (SMF) before reaching Denver. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) at the last minute?
Typically, booking a last minute flight from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) flight and hotel package?
Securing a San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.)?
If you booked your San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
San Diego Intl.
Destination airport
Denver Intl.
Airlines serving
Alaska Airlines, JetBlue Airways
Return price
£115
Distance
1363 km
Average flight time
3 hours 26 mins

Book with confidence

Compare flights from San Diego to Denver easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from San Diego to Denver. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Denver Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from San Diego Intl. to Denver Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from San Diego Intl. (SAN) to Denver Intl. (DEN)

The easiest way to view the best deals on flights from San Diego to Denver today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from San Diego Intl. to Denver Intl. start at just £115 and range up to £446.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near San Diego and Denver
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your San Diego to Denver flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from San Diego Intl. to Denver Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from San Diego to Denver easily and book with confidence

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*Available to Expedia members.