Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from San Diego to Denver from £65

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 22/2. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DEN
22 Jan — 29 Jan1
1 adult

The best prices from San Diego to Denver Intl are usually found in April or January, booked 44 days in advance, depart on a Tuesday or Monday and return on a Monday

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 17 January 2025.

Round-trip from

£145

One-way from

£65

Popular in

December

Cheapest in

April

Average price

£122
United Airlines
  • United Airlines
  • 19/2-22/2
  • 2 total stops
  • 9h 17m total
  • San Diego to Denver
Southwest
  • Southwest
  • 22/2
  • Nonstop
  • 2h 20m total
  • San Diego to Denver
High demand for flights, 9% potential price rise
Best time to find cheap flights, 2% potential price drop
Average for round-trip flights in January 2025

Find flight deals from San Diego to Denver

Cheapest flights from San Diego to Denver
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 17 January 2025.

Wed 19/206:15SAN - DEN
1 stop5h 04mUnited Airlines
Sat 22/206:00DEN - SAN
1 stop4h 13mUnited Airlines
Deal found 15/1£145
Sat 8/313:25SAN - DEN
1 stop9h 52mDelta
Wed 12/306:10DEN - SAN
1 stop7h 16mDelta
Deal found 16/1£166
Sat 1/307:00SAN - DEN
1 stop15h 29mAlaska Airlines
Sat 8/307:00DEN - SAN
2 stops17h 59mAlaska Airlines
Deal found 16/1£227
Fri 21/319:20SAN - DEN
1 stop4h 35mSouthwest
Mon 24/315:05DEN - SAN
1 stop4h 50mSouthwest
Deal found 17/1£267

Find flights from San Diego to Denver within your budget

Customise 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, Cheapflights users made 858,174 searches. Data last updated 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 19/2

06:15-12:19

1 stop5h 04m

Denver Intl

Sat 22/2

06:00-09:13

1 stop4h 13m

£145

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 8/3

13:25-00:17

1 stop9h 52m

Denver Intl

Wed 12/3

06:10-12:26

1 stop7h 16m

£166

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 1/3

07:00-23:29

1 stop15h 29m

Denver Intl

Sat 8/3

07:00-23:59

2 stops17h 59m

£227

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Fri 21/3

19:20-00:55

1 stop4h 35m

Denver Intl

Mon 24/3

15:05-18:55

1 stop4h 50m

£267

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 22/2

07:45-11:05

Nonstop2h 20m

£65

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Tue 18/2

06:15-14:41

1 stop7h 26m

£73

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 19/2

13:25-00:17

1 stop9h 52m

£83

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 5/3

10:24-23:29

2 stops12h 05m

£92

Flights are sorted by cheapest return flights first.

Deals found on 17/1

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.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from San Diego to Denver

Get recent, data-driven insights about flights from San Diego to Denver including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from San Diego to Denver. Price data was last updated on 10 January 2025.

The best time to book flights from San Diego to Denver is 44 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 £667). Flying from San Diego to Denver in July is currently the most expensive (average of £1,030). 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?

Find hourly flight availability from San Diego to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 January 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to Denver as you normally would.

Weekly flight availability from San Diego to Denver

Explore weekly flight availability from San Diego to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 January 2025.

The most flights from SAN to DEN are scheduled on a Thursday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 13.0 - 58.0 inches per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Denver when rainfall is around 13.0 mm.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated 17 January 2025.
Peruse reviews from past customers who have flown with United Airlines, Delta and Alaska Airlines from San Diego to Denver to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very Good
4,659 reviews

Overall

8.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

8.1
Very Good
4,659 reviews
8.1
Very Good
4,659 reviews

Overall

8.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

8.0
Very Good
9,684 reviews
8.1
Very Good
4,659 reviews

Overall

8.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

8.0
Very Good
8,513 reviews
8.1
Very Good
4,659 reviews

Overall

8.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

7.4
Good
8,969 reviews
8.1
Very Good
4,659 reviews

Overall

8.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Food

7.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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

    Denver Intl is the airport most travelers will use when flying to Denver from San Diego. Booking flights from San Diego (SAN) to Denver Intl (DEN) should be relatively easy as there are 16 daily flights to Denver from 1 airline. 2h 28m is how long a flight from San Diego to Denver Intl will take if you book a nonstop flight.

  • How popular is this San Diego to Denver flight route?

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

    Our cheapest airline available from San Diego to Denver is United Airlines. Our recent data shows that you can find tickets from as low as £145 on this airline. Additional options worth looking into are Delta and Alaska Airlines, starting at £166 and £227 round-trip. United Airlines is 2% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from San Diego to Denver one-way?

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at £65. United Airlines flights start at £73 while deals on Delta start at £83 one-way.

  • 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: Copa Airlines (86%), Air Canada (83%), United Airlines (81%).

  • Can I find deals for flights from San Diego to Denver that include hotel bookings?

    Yes. In addition to deals on San Diego to Denver flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Denver.

  • Can I find deals for business class flights from San Diego to Denver?

    Yes. Cheapflights offers flight deals from San Diego to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 £667). Flying from San Diego to Denver in July is currently the most expensive (average of £1,030). 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.

See more FAQs

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Winter Park
Frisco

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Denver

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

Top airline flying from San Diego to Denver

Discover the top airline that operate flights from San Diego to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest£47Average£202FlexibilityNo cancel feeOn-time62%
Search Frontier flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.