Question 1

How popular is this San Francisco to Denver flight route?

Accepted Answer

This flight path from San Francisco to Denver Intl was viewed by 36 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Question 2

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

Accepted Answer

Flying on United Airlines is currently your cheapest option to Denver, with prices starting at £147. Additional return tickets that might be worth considering are offered by Southwest and Alaska Airlines, with the lowest prices starting at £148 and £161, respectively. You may be able to fly from San Francisco to Denver for 8% less than the average price by searching for these airlines.

Question 3

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

Accepted Answer

The cheapet airlines for a one-way flight from San Francisco to Denver are Southwest (£53), United Airlines (£67), and Frontier (£72).

Question 4

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

Accepted Answer

The price you pay for your flight from San Francisco to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 24 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 5

What is the cheapest month to book a flight from San Francisco to Denver?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from San Francisco to Denver (average of £667). Flying from San Francisco 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.

Question 6

What is the cheapest day to fly from San Francisco to Denver?

Accepted Answer

Travellers seeking maximum savings on their San Francisco to Denver flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 7

Weekly flight availability from San Francisco to Denver

Accepted Answer

The most flights from SFO to DEN are scheduled on a Tuesday (49 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Question 8

E

Accepted Answer

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.

Question 9

E

Accepted Answer

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).

Question 10

What are the cheapest flights from San Francisco to Denver?

Accepted Answer

Looking at all options, your cheapest flight can be booked for £101. While the most popular route (San Francisco - Denver Intl) can be booked for £171 on average our data indicates £170 when flying from San Francisco to Denver.

Question 11

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

Accepted Answer

Before booking your flight to Denver from San Francisco, check out the most reliable airlines to get you to your destination on time: Frontier (94%), Air Canada (90%), United Airlines( 89%).

Question 12

What is the cheapest day to fly round-trip from San Francisco to Denver?

Accepted Answer

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 490% when planning your travel around this day of the week.

Question 13

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

Accepted Answer

Find a great deal and save up to 44% by booking at least 25 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from San Francisco to Denver within the next two weeks, with the cheapest ticket starting at £133.

Question 14

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

Accepted Answer

The best pricing can be found in the month of September. Prices to Denver from San Francisco average £160. You can even find prices in September for less than £160, as users have found deals to Denver from as low as £42. The month of December appears to be one of the more expensive times to travel to Denver from San Francisco. Flying in the targeted month can save you up to 22%.

Question 15

What is the cheapest time of day to fly from SFO to DEN?

Accepted Answer

When flying from San Francisco to Denver, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 65% versus a flight in the afternoon.

Question 16

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

Accepted Answer

If you book a flight from San Francisco to Denver, you will be flying from San Francisco to Denver Intl. Flights to Denver Intl (DEN) from San Francisco (SFO) take 2h 30m for a nonstop flight. There are 21 flights from San Francisco to Denver per day from 1 airline.

Question 17

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

Accepted Answer

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

Question 18

How can I find direct flights from San Francisco to Denver?

Accepted Answer

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

Question 19

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

Accepted Answer

Yes. Cheapflights offers flight deals from San Francisco 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.

Question 20

How does Cheapflights help users find flights from San Francisco to Denver?

Accepted Answer

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Francisco to Denver. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Question 21

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Denver?

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Denver from San Francisco.

Question 22

Can Cheapflights find flights from San Francisco to Denver with no change fees?

Accepted Answer

Yes! Cheapflights helps users easily find flights from San Francisco to Denver with no change fees.

Question 23

Can Cheapflights notify me if prices for flights from San Francisco to Denver become cheaper?

Accepted Answer

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Denver from San Francisco today and book when prices fit your budget.

Round-trip from	£147
One-way from	£53
Popular in	December
Cheapest in	September
Average price	£155
Good round-trip deal	£188 or less
Good one-way deal	£125 or less

Cheap flights from San Francisco to Denver from £53

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from San Francisco to Denver Intl are usually found in September or January, booked 24 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from San Francisco to Denver

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San Francisco to Denver

Cheapest flights from San Francisco to DenverExplore the most affordable flight options available from San Francisco to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Explore the most affordable flight options available from San Francisco to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Denver that are best for you.

Best time to book a flight from San Francisco to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from San Francisco with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Denver

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

Use this chart to determine the optimal time to book a return flight from San Francisco to Denver. Price data was last updated on 25 April 2025.

What is the cheapest month to book a flight from San Francisco to Denver?

What is the cheapest time of day to fly from SFO to DEN?

Find hourly flight availability from San Francisco 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 29 April 2025.

Weekly flight availability from San Francisco to Denver

Explore weekly flight availability from San Francisco 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 29 April 2025.

Rainfall in Denver by month

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

Temperature in Denver by month

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

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 29 April 2025.

To help decide which airline to fly from San Francisco to Denver, see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Francisco 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 Francisco to Denver?

How popular is this San Francisco to Denver flight route?

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

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

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

What are the cheapest flights from San Francisco to Denver?

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

How can I find direct flights from San Francisco to Denver?

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

What is the cheapest month to book a flight from San Francisco to Denver?

Travelling to a place near San Francisco?

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 Francisco to Denver

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

Top airline flying from San Francisco to Denver

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 Francisco to Denver?

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Denver?

Can Cheapflights find flights from San Francisco to Denver with no change fees?

Can Cheapflights notify me if prices for flights from San Francisco to Denver become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from San Francisco to Denver
Explore the most affordable flight options available from San Francisco to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.