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Cheap Flights from San Francisco International to Denver

Compare San Francisco International to Denver flight deals

Find the cheapest month or even day of the year to fly to Denver

Book the best Denver fare with no extra fees

Flight deals from San Francisco International to Denver

Looking for a cheap last-minute deal or the best return flight from San Francisco International to Denver? Find the lowest prices on one-way and return tickets right here.
Denver.R 459 per passenger.Departing Wed, 4 Mar.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Wed, 4 Mar, arriving in Denver International.Price includes taxes and charges.From R 459, select.
Denver.R 459 per passenger.Departing Wed, 18 Feb.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Wed, 18 Feb, arriving in Denver International.Price includes taxes and charges.From R 459, select.
Denver.R 719 per passenger.Departing Tue, 7 Apr.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Tue, 7 Apr, arriving in Denver International.Price includes taxes and charges.From R 719, select.
Denver.R 1,380 per passenger.Departing Fri, 30 Jan.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Fri, 30 Jan, arriving in Denver International.Price includes taxes and charges.From R 1,380, select.
Denver.R 1,619 per passenger.Departing Tue, 5 May.One-way flight with United.Outbound direct flight with United departs from San Francisco International on Tue, 5 May, arriving in Denver International.Price includes taxes and charges.From R 1,619, select.
Denver.R 2,339 per passenger.Departing Mon, 1 Jun.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from San Francisco International on Mon, 1 Jun, arriving in Denver International.Price includes taxes and charges.From R 2,339, select.
Denver.R 2,347 per passenger.Departing Sat, 17 Oct.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from San Francisco International on Sat, 17 Oct, arriving in Denver International.Price includes taxes and charges.From R 2,347, select.
Denver.R 2,347 per passenger.Departing Thu, 3 Sep.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from San Francisco International on Thu, 3 Sep, arriving in Denver International.Price includes taxes and charges.From R 2,347, select.

Find the cheapest month to fly from San Francisco International to Denver

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Francisco International to Denver flights are currently cheapest in February.
Jan
from R 1,380
Feb
from R 459
Mar
from R 459
Apr
from R 719
May
from R 1,619
Jun
from R 2,339
Jul
from R 2,425
Aug
from R 2,425
Sep
from R 2,347
Oct
from R 2,347
Nov
from R 2,350
Dec
Find prices

Direct flights from San Francisco International to Denver

Alternative San Francisco International to Denver routes

Looking for the cheapest, fastest or easiest route from San Francisco International to Denver? You could fly into the following airports instead.

Denver Arapahoe Co

1km from central Denver
Closest
Search flights

Broomfield

23km from central Denver
Search flights

Denver International

30km from central Denver
Cheapest
from R 459
Search flights

Northern Colorado Regional

79km from central Denver
Search flights

San Francisco to Denver: Flight information

The things to know before you go.
Cheapest flight foundR 459
Cheapest month to flyFebruary
Average flight time2 hrs, 42 mins
Most popular airlineUnited
Average flights per week766

Finding cheap flights from San Francisco International to Denver: Frequently asked questions

There are 4 airports in Denver: Denver Arapahoe Co, Broomfield, Denver International, and Northern Colorado Regional.
The best price we found for a return flight from San Francisco International to Denver is R 918. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 42 minutes is the average flight time from San Francisco International to Denver.
United, Southwest Airlines and Air Canada fly direct from San Francisco International to Denver.
As of January 2026, there are 383 flights per week flying from San Francisco International to Denver.
The cheapest month to fly from San Francisco International to Denver is usually February.
If you're flying from San Francisco International Airport, the cheapest airport near Denver is Denver International – which is 29.9 km away from the centre of Denver. We've found flights into this airport from R 918.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to Denver on Wednesday, 18 February 2026.
Yes – the average flight time is 2 hours and 42 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.
In January, the average temperature is usually around -1°C. July is typically the warmest month in Denver, when it usually averages around 31°C. You can expect the least rain in January. The coldest month is December, with temperatures averaging -6°C. The rainiest month is July.
Currently, Frontier Airlines offers the cheapest flight tickets to Denver.

Flying from San Francisco International Airport (SFO) to Denver: what you need to know

  • Jump on a direct flight from San Francisco International Airport to Denver and you'll be in the air for an average of 2 hours 45 minutes.

  • Denver is one hour ahead of San Francisco, where San Francisco International Airport is located. Denver observes the UTC-6 timezone.

  • San Francisco International Airport (SFO) to Denver International Airport (DEN) is the most traveled route, with 91 weekly flights to choose from. If you have things to do before leaving, the last flight from SFO to DEN is with Southwest Airlines at 21:25. Opt for the first departure operated by United Airlines at 05:00 if you want to get on your way earlier.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to catch your SFO to Denver flight.

  • Planning to travel during a peak period like public or school holidays? Expect longer lines at security and check-in. To be on the safe side, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • Direct San Francisco International Airport to Denver tickets are available for booking. Denver International Airport (DEN) is where you'll be landing.

  • You'll have your choice of carriers that offer direct flights from San Francisco International Airport to Denver. Get up and away with one of these:

  • SFO is around 18 kilometres from central San Francisco. If you're catching a cab, driving or ride-sharing from the centre, it'll take 20 minutes or so to get there, depending on traffic. If you're taking public transport, expect the travel time to be around 45 minutes.

  • Catching an early flight from San Francisco International Airport to Denver? Avoid the hassle of rushing to the airport (and get some extra shut-eye) by choosing one of these hotels near SFO:

  • 77.36% of flights taking off from San Francisco International Airport touch down at their destination on schedule.

How to find the cheapest flights from San Francisco International Airport (SFO) to Denver

  • The lowest price we've seen for a one-way San Francisco International Airport to Denver flight is R 459. The cheapest price for a return flight is R 918. Remember fares may change due to demand at the time of booking.

  • Score cheap flights from SFO to Denver by booking one month ahead. Based on our research, that's the sweet spot for finding a bargain.

  • Plan your trip for May. That's the best month for scoring a bargain on San Francisco International Airport to Denver tickets. If you're flexible with your dates, use the 'Whole month' tool to access the lowest price across each month.

  • Spend less time searching for cheap flights from SFO to Denver by setting up a Price Alert. You'll receive an email or notification on the app when fares go down.

  • Choose your ideal departure and arrival times, number of stops and airlines with our filters. Then, sort the results for your flight from San Francisco International Airport to Denver by 'Fastest,' 'Cheapest' or 'Best.'

Airports in Denver

Denver International Airport (DEN)

  • Denver International Airport (DEN) is around 40 kilometres from central Denver. If you're catching a cab or a ride-share, the drive takes roughly 35 minutes.

  • It takes around 1 hour 30 minutes to get there using public transport.

  • Consider checking in to Baymont by Wyndham Denver International Airport after your flight from San Francisco International Airport to Denver. It's a short drive from DEN and a comfortable option if you want to relax as soon as possible.

  • Travel at your own speed with a Denver International Airport rental car. Pick up your wheels from Routes Car Rentals, Dollar or Budget and see more of Denver and beyond.

  • Reserving your ride from Denver International Airport around one week in advance of your flight from SFO to Denver can help you secure the lowest rate.

  • DEN is located at 8500 Pena Boulevard.

Best time to go to Denver

  • Visit Denver during the high season if you want a busy atmosphere, but remember that prices are usually higher. Alternatively, book your flights from San Francisco International Airport to Denver during low season when prices are cheaper and it's less crowded.

  • The warmest month in Denver is July, with temperatures ranging between 14ºC (57ºF) and 32ºC (90ºF). Lock in your San Francisco International Airport to Denver flight ticket then if this is the type of weather you enjoy.

  • If you want to travel in cooler conditions, look for a cheap ticket from SFO to Denver in January when temperatures average between -9ºC (16ºF) and 7ºC (45ºF).

More about Denver

Explore more of United States

  • Colorado Springs is just one of the many places in United States waiting to be discovered once you've taken in the sights of Denver. Around 105 kilometres away to the south, popular attractions include US Northern Command (USNORTHCOM) / North American Aerospace Defence Command (NORAD) Headquarters, Cheyenne Mountain Air Force Station and National Strength and Conditioning Association (NSCA).

  • Around 161 kilometres south of Denver, Pueblo is another essential stop in United States. No visit is complete without checking out Pueblo Weisbrod Aircraft Museum, Rosemount Museum and Pueblo Zoo.

Plan the rest of your trip from San Francisco to Denver

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.