SFO - DEN

$127 Find Cheap Flights from San Francisco to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Denver departing on 17/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Denver, as well as popular online travel agencies
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Cheap Flight Deals from San Francisco to Denver (SFO-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Francisco to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from San Francisco to Denver

KAYAK's recommended return flight deals from the most popular airlines that fly from San Francisco to Denver.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
United Airlines Logo
19:05 - 22:44SFO-DEN
2h 39mdirect
United Airlines Logo
05:20 - 07:10DEN-SFO
2h 50mdirect
$221United Airlines
Find Deal
Fri, 16 May - Sun, 18 May
Frontier Logo
06:37 - 10:12SFO-DEN
2h 35mdirect
Frontier Logo
22:29 - 00:24DEN-SFO
2h 55mdirect
$279Frontier
Find Deal
Sun, 8 Jun - Sun, 15 Jun
United Airlines Logo
20:45 - 00:24SFO-DEN
2h 39mdirect
United Airlines Logo
05:00 - 06:42DEN-SFO
2h 42mdirect
$296United Airlines
Find Deal
Wed, 21 May - Mon, 26 May
Southwest Logo
05:10 - 08:35SFO-DEN
2h 25mdirect
Southwest Logo
21:50 - 23:30DEN-SFO
2h 40mdirect
$309Southwest
Find Deal
Wed, 18 Jun - Sat, 28 Jun
United Airlines Logo
18:25 - 22:04SFO-DEN
2h 39mdirect
United Airlines Logo
05:20 - 07:10DEN-SFO
2h 50mdirect
$315United Airlines
Find Deal
Sat, 17 May - Mon, 19 May
Southwest Logo
05:25 - 12:15SFO-DEN
5h 50m1 stop
Southwest Logo
21:50 - 23:30DEN-SFO
2h 40mdirect
$324Southwest
Find Deal
Wed, 11 Jun - Sat, 14 Jun
Delta Logo
12:40 - 18:19SFO-DEN
4h 39m1 stop
Delta Logo
05:30 - 08:56DEN-SFO
4h 26m1 stop
$337Delta
Find Deal
Sat, 17 May - Mon, 19 May
Alaska Airlines Logo
07:00 - 13:58SFO-DEN
5h 58m1 stop
Alaska Airlines Logo
19:05 - 23:21DEN-SFO
5h 16m1 stop
$338Alaska Airlines
Find Deal
Tue, 3 Jun - Tue, 3 Jun
Delta Logo
15:48 - 23:48SFO-DEN
7h 00m1 stop
Delta Logo
05:40 - 09:06DEN-SFO
4h 26m1 stop
$340Delta
Find Deal
Wed, 2 Jul - Tue, 8 Jul
Alaska Airlines Logo
17:25 - 13:58SFO-DEN
19h 33m2 stops
Alaska Airlines Logo
19:05 - 23:21DEN-SFO
5h 16m1 stop
$368Alaska Airlines
Find Deal
Mon, 2 Jun - Wed, 4 Jun

KAYAK's insights & trends for San Francisco to Denver flights

Get data-powered insights and trends into flights from San Francisco to Denver to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Francisco to Denver?

The average price of all round-trip flights from San Francisco to Denver clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Denver on a Monday and more expensive on a Friday. On your return trip to San Francisco, you should consider flying back on a Thursday, and avoid Tuesdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San Francisco to Denver is September, where tickets cost $291 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $412 and $409 respectively.

Can I save money by flying with a stopover from San Francisco to Denver?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of $530, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from San Francisco to Denver, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low season

January

High season

July

Cheapest flight

$127
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (1% more expensive on average)
Flight from San Francisco to Denver

When to book flights from San Francisco to Denver

Are your dates flexible? Find out the best times to travel from San Francisco to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Denver

  • How do I get from Denver Airport to downtown Denver?

    The RTD bus service connects Denver Airport with the city and departs every 15m from the airport. The bus stop is located at the DEN Transit Center at the south end of Jeppesen Terminal. There is also an information counter in the arrivals hall if you have any questions about routes, fares, or directions. Day passes can be purchased for approximately $9 in cash (no change given) at the bus driver or with credit cards at the ticket machines.

  • Where can I eat at Denver airport after I’ve landed?

    If you land at Jeppesen Terminal and fancy authentic American cuisine, opt for the Boulder Beer Tap House at level 5 on the west side of the terminal. Here you can consume scrumptious snacks, warm dishes, and craft beer. For Mexican food, the Cantina Grill at level 6 is also a good option to get something hearty to eat.

  • Where can I find the car rental center at Denver airport?

    Explore the city and its surroundings conveniently with your own four wheels and rent a car directly from one of the companies located at the airport. The airport has its own car rental center which can be reached with a courtesy shuttle departing from Jeppesen Terminal at level 5, island 4. Companies operating at the airport include Avis, Thrifty, and Enterprise, which are at your service 24/7.

  • Is there a hotel at Denver airport?

    The Westin Denver International Airport Hotel is just a few steps from the terminal building and provides transit flyers, late arrivals, or early departing passengers with a nearby bed. Apart from its over 500 rooms, the hotel boasts a conference center, pool, and gym, as well as various restaurants.

  • What is the cheapest flight from San Francisco to Denver?

    In the last 3 days, the lowest price for a flight from San Francisco to Denver was $81 for a one-way ticket and $141 for a return.

  • Which airports will I be using when flying from San Francisco to Denver?

    San Francisco and Denver are both served by 1 main airport. You will leave San Francisco from San Francisco and will be arriving at Denver Intl.

  • Which airlines offer Wi-Fi service onboard planes from San Francisco to Denver?

    Alaska Airlines, Delta, JetBlue, American Airlines, and Hawaiian Airlines offer inflight Wi-Fi service on the San Francisco to Denver flight route.

  • Which aircraft models fly most regularly from San Francisco to Denver?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the San Francisco to Denver flight route.

  • Which airline alliances offer flights from San Francisco to Denver?

    Star Alliance is the only airline alliance operating flights between San Francisco and Denver.

  • On which days can I fly direct from San Francisco to Denver?

    There are direct flights from San Francisco to Denver on a daily basis.

  • How does KAYAK find such low prices on flights from San Francisco to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Denver with an airline and back to San Francisco with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from San Francisco to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $138 or less one-way and $309 or less round-trip.
  • If you’d like to fly cheap and nonstop from San Francisco to the Denver International Airport (DEN), you can book with Frontier Airlines. This low-cost airline offers regular flights from San Francisco to Denver and allows you to save some money on your journey for your time away.
  • For anyone who has extra time on their hands before their departure from San Francisco International Airport (SFO) and who are interested in everything connected to airports and airplanes, a visit at the Aviation Museum & Library is right up the sleeve. You can find it in the main hall of the international terminal building and get access between 10:30 am and 4:30 pm.
  • Let your children use up their energy before boarding your flight from San Francisco to Denver and check out the Kids’ Spots at Terminal 3, Area F, and Area E. Tubes, toys, and interactive activities keep the little ones entertained until it is time to board.
  • Roaming through the San Francisco airport allows you to spot all the exhibited art from regional artists. The SFO Museum and Art Collection welcome and see off travelers in style with various art installations, pictures, and sculptures.
  • Pigs and dogs are usually not a common sight at airports, but at San Francisco airport they belong to the crew. The Wag Brigade consists of various specially trained dogs and a pig who give travelers a joyful (and sometimes wet) welcome and goodbye. They can be detected by their "Pet Me" vests and wagging tails while wandering through the terminals.
See more tips

Prefer to fly direct from San Francisco to Denver Intl?

Find which airlines fly direct from San Francisco Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

San Francisco to Denver Intl

Monday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

Tuesday

ANA, Air Canada, Air New Zealand, +7 more

ANA, Air Canada, +8 more

Wednesday

ANA, Air Canada, Air China, +9 more

ANA, Air Canada, +10 more

Thursday

ANA, Air Canada, Air New Zealand, +7 more

ANA, Air Canada, +8 more

Friday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

Saturday

ANA, Air Canada, Air China, +8 more

ANA, Air Canada, +9 more

Sunday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

See more direct flights

Direct returns

Denver Intl to San Francisco

Monday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

Tuesday

ANA, Air Canada, Air New Zealand, +7 more

ANA, Air Canada, +8 more

Wednesday

ANA, Air Canada, Air China, +9 more

ANA, Air Canada, +10 more

Thursday

ANA, Air Canada, Air New Zealand, +7 more

ANA, Air Canada, +8 more

Friday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

Saturday

ANA, Air Canada, Air China, +8 more

ANA, Air Canada, +9 more

Sunday

ANA, Air Canada, Air New Zealand, +8 more

ANA, Air Canada, +9 more

See more direct flights
See more direct flights

Top airline flying from San Francisco to Denver

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
5.9
FrontierOverall score based on 3283 reviews
4.6Entertainment
4.8Food
6.8Crew
6.2Boarding
5.6Comfort
Airline reviews

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

8.0 ExcellentGreg, Apr 2025MCO - DEN
Read more Frontier reviews

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

The plane failed preflight inspection, so we sat there for 90 mins while they tried to fix it. Ultimately, everything was remedied and we made our connecting flight; instead of a 2 hour layover at the airport, we spent it waiting on the plane.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Delayed each time on a round trip with no significant weather interference. Updates to flight times came after the fact. 30 min behind in boarding and board and phone still show an on time departure. Some mysterious extra 300 miles that came so surprising they had to fuel while we were already on board?

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

Stuck in Phoenix for two days, not even a hotel voucher offered.

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

Flight got delayed for 3.5 hours, and for the first hour after the departure time there was no update from the gate folks...

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

Information on your arrival and departure airports

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