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Cheap flights from San Francisco International to Denver

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Compare San Francisco International to Denver flight deals

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

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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.P4,489 per passenger.Departing Sat, 5 Apr, returning Sun, 6 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Sat, 5 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 6 Apr, arriving in San Francisco International.Price includes taxes and charges.From P4,489, select.
Denver.P4,489 per passenger.Departing Thu, 1 May, returning Sat, 3 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Thu, 1 May, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 3 May, arriving in San Francisco International.Price includes taxes and charges.From P4,489, select.
Denver.P4,835 per passenger.Departing Mon, 31 Mar, returning Mon, 7 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Mon, 31 Mar, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Mon, 7 Apr, arriving in San Francisco International.Price includes taxes and charges.From P4,835, select.
Denver.P4,892 per passenger.Departing Tue, 25 Mar, returning Sat, 29 Mar.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Tue, 25 Mar, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sat, 29 Mar, arriving in San Francisco International.Price includes taxes and charges.From P4,892, select.
Denver.P6,839 per passenger.Departing Tue, 29 Apr, returning Sun, 4 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Tue, 29 Apr, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 4 May, arriving in San Francisco International.Price includes taxes and charges.From P6,839, select.
Denver.P7,935 per passenger.Departing Tue, 3 Jun, returning Tue, 10 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Tue, 3 Jun, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 10 Jun, arriving in San Francisco International.Price includes taxes and charges.From P7,935, select.
Denver.P8,472 per passenger.Departing Wed, 2 Jul, returning Tue, 12 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Wed, 2 Jul, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Tue, 12 Aug, arriving in San Francisco International.Price includes taxes and charges.From P8,472, select.
Denver.P8,510 per passenger.Departing Tue, 1 Jul, returning Sun, 6 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from San Francisco International on Tue, 1 Jul, arriving in Denver International.Inbound direct flight with Frontier Airlines departs from Denver International on Sun, 6 Jul, arriving in San Francisco International.Price includes taxes and charges.From P8,510, 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 April.
Feb
Find prices
Mar
from P4,892
Apr
from P4,489
May
from P4,489
Jun
from P7,935
Jul
from P8,510
Aug
from P9,680
Sep
from P15,949
Oct
from P20,521
Nov
from P28,698
Dec
from P15,930
Jan
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.

San Francisco to Denver: Flight information

The things to know before you go.
Cheapest flight foundP4,489
Cheapest month to flyApril
Average flight time2 hrs, 39 mins
Most popular airlineUnited
Average flights per week419

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 P4,489. 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 39 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 February 2025, there are 419 flights per week flying from San Francisco International to Denver.
The cheapest month to fly from San Francisco International to Denver is usually February 2025.
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 P4,489.
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 Saturday, 5 April 2025.
Yes – the average flight time is 2 hours and 39 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 February, the average temperature is usually around 0°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.

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

  • Around 2 hours 43 minutes is how long you'll be travelling on a direct flight from San Francisco International Airport to Denver.

  • Denver is 1 hour ahead of San Francisco, where San Francisco International Airport is located. Denver operates on the UTC-6 timezone.

  • With 128 weekly flights between the two airports, San Francisco International Airport (SFO) to Denver International Airport (DEN) is the most popular route. Frontier Airlines operates the earliest flight at 00:58. If you'd like to get more out of your day before leaving, the last departure from SFO to DEN is with Southwest Airlines at 20:55.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to board your flight from SFO to Denver.

  • Popular months like August or holiday periods such as Thanksgiving and Christmas will mean longer waits at check-in and security. If you're travelling then, play it safe and head to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of an international flight is a smart move.

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

  • You'll have your choice of airlines operating direct flights from San Francisco International Airport to Denver. Book your seat with one of these:

  • Once you've booked cheap tickets from San Francisco International Airport to Denver, get your documents in order. A visa or passport isn't required since you're travelling within United States. As long as you have some other valid form of identification, like a driver's licence or an ID card, you're all set.

  • Located around 21 kilometres from central San Francisco, SFO can be reached in about 20 minutes by car (depending on traffic). The same journey on public transport is roughly 47 minutes.

  • In search of a convenient hotel close to SFO? If you're catching an early flight from San Francisco International Airport to Denver, these accommodation options will have you sleeping moments from check-in:

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

  • P2,245 is the cheapest price we've seen for a one-way ticket from San Francisco International Airport to Denver. For a return flight on this route, the best price is P4,489. Depending on how early you book and the availability, these fares could change.

  • To snag cheap tickets from SFO to Denver, book your journey 9 months before your departure date.

  • Organise your trip for May. That's the cheapest month for tickets from San Francisco International Airport to Denver. If you're flexible with your dates, use the 'Whole month' tool to see the lowest price across each month.

  • Log into your online account or use the app to create a Price Alert. We'll get in touch right away if there's a better deal on this route. It doesn't take long, and it'll save you from checking for cheap tickets from SFO to Denver every day.

  • Use the filters to tailor your flights from San Francisco International Airport to Denver. Pick your preferred arrival and departure times, number of stops and airlines. Alternatively, sort your results by 'Cheapest' to find the best deals.

Airports in Denver

Denver International Airport (DEN)

  • Denver International Airport (DEN) to central Denver is roughly 40 kilometres. It'll take you around 34 minutes to reach the centre driving.

  • Getting to the centre on public transport takes roughly 1 hour and 31 minutes.

  • Hop off your flight from San Francisco International Airport to Denver and jump into your hotel bed shortly after. If you're looking for a convenient option a short drive from DEN, check out SpringHill Suites Denver Airport.

Best time to go to Denver

  • July is the busiest month to hop on a flight from San Francisco International Airport to Denver while April is the quietest. To work out the best time to visit Denver, consider whether you prefer a lively vibe or a quieter pace.

  • The warmest month in Denver is July, with temperatures ranging between 14ºC and 32ºC. Book your flights from San Francisco International Airport to Denver in this month if you enjoy this type of weather.

  • Search for cheap flights from SFO to Denver in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -9ºC and 7ºC on average.

More about Denver

  • When it comes to searching for somewhere to lay your head, you'll find the top stays in Denver right here. Browse these options as soon as you've booked your flight from San Francisco International Airport to Denver:

  • Every great holiday has to include a little sightseeing. Denver Art Museum, Union Station and Denver Botanic Gardens are must-do's during your Denver adventure.

Complete your Denver trip with a car rental

  • Finding you a cheap flight from San Francisco International Airport to Denver isn't the only trick up our sleeve. Check out our car rentals in Denver and explore the city on your own terms. We search for deals from trusted car rental providers and put them all in one place. Instantly compare rates and then book with no fees.

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Hotels deals in Denver

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.