DEN - SFO

$104 Find Cheap Flights from Denver to San Francisco - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to San Francisco departing on 9/3. 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.
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Everything you should know

Cheapest round-trip
$191
Typical prices: $148-$337
Frontier
Wed 9/2Tue 9/8
DEN - SFO • Non-stop
Cheapest non-stop
$192
Typical prices: $201-$390
Frontier
Wed 8/19Mon 8/24
DEN - SFO • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Frontier Economy Bundle adds carry-on and seat choice; buy bags online early.
Southwest includes a free carry-on; United Economy Plus adds more legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with Frontier, Southwest and United Airlines. Average duration is 2h 41m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
Avoid delays
Most punctual • 78% on-time
Best time • Fewest delays
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 38% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 21% price drop
Most popular
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Flight Deals

Cheap Flights from Denver to San Francisco (DEN-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to San Francisco 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to San Francisco

Wed, Sep 2 - Tue, Sep 8
Frontier Logo
10:23 am - 12:12 pm
DEN
-
SFO
2h 49mnonstop
Frontier Logo
8:56 pm - 10:07 am
SFO
-
DEN
12h 11m
1 stop
$191Frontier
Wed, Aug 19 - Mon, Aug 24
Frontier Logo
9:45 am - 11:34 am
DEN
-
SFO
2h 49mnonstop
Frontier Logo
7:30 pm - 11:10 pm
SFO
-
DEN
2h 40mnonstop
$192Frontier
Mon, Sep 14 - Fri, Sep 18
Frontier Logo
9:05 am - 1:43 pm
DEN
-
SFO
5h 38m
1 stop
Frontier Logo
10:24 pm - 10:07 am
SFO
-
DEN
10h 43m
1 stop
$193Frontier
Wed, Sep 9 - Sat, Sep 12
Multiple Airlines Logo
6:17 am - 10:53 am
DEN
-
SFO
5h 36m
1 stop
Multiple Airlines Logo
6:04 am - 9:46 am
SFO
-
DEN
2h 42mnonstop
$203Multiple Airlines
Tue, Aug 25 - Tue, Sep 1
Multiple Airlines Logo
12:47 pm - 7:56 pm
DEN
-
SFO
8h 09m
1 stop
Multiple Airlines Logo
1:50 pm - 9:41 pm
SFO
-
DEN
6h 51m
1 stop
$214Multiple Airlines
Fri, Oct 2 - Sun, Oct 4
Multiple Airlines Logo
6:17 am - 9:42 pm
DEN
-
SFO
16h 25m
1 stop
Multiple Airlines Logo
9:42 am - 1:29 pm
SFO
-
DEN
2h 47mnonstop
$216Multiple Airlines
Mon, Sep 7 - Thu, Sep 10
United Airlines Logo
5:00 am - 6:41 am
DEN
-
SFO
2h 41mnonstop
United Airlines Logo
5:00 am - 8:39 am
SFO
-
DEN
2h 39mnonstop
$257United Airlines
Wed, Sep 9 - Sat, Sep 12
United Airlines Logo
9:36 am - 11:23 am
DEN
-
SFO
2h 47mnonstop
United Airlines Logo
6:25 pm - 10:08 pm
SFO
-
DEN
2h 43mnonstop
$257United Airlines
Wed, Aug 26 - Wed, Sep 2
Southwest Logo
9:15 am - 10:50 am
DEN
-
SFO
2h 35mnonstop
Southwest Logo
5:30 pm - 9:00 pm
SFO
-
DEN
2h 30mnonstop
$257Southwest
Wed, Sep 9 - Tue, Sep 15
Southwest Logo
3:45 pm - 5:20 pm
DEN
-
SFO
2h 35mnonstop
Southwest Logo
6:35 am - 10:00 am
SFO
-
DEN
2h 25mnonstop
$257Southwest
Booking Insights

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

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

How much is a round-trip flight from Denver to San Francisco?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to San Francisco departing in September.

Flight prices are below average for this route right now.

Flights to San Francisco from Denver usually cost between $198 and $385 in September.
The lowest price found in the past 5 days was $191 on Frontier (Sep 2-Sep 8).

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

The average price of all round-trip flights from Denver to San Francisco clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Denver to San Francisco, look for departures on Fridays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from San Francisco, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to San Francisco, 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 Denver to San Francisco is January, where tickets cost $236 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $375 and $370 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to San Francisco, 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 Denver to San Francisco, you should book around 3 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Expert advice

Expert advice for your flight from Denver to San Francisco

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on Southwest and SFO

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Harriet Baskas

Harriet Baskas

Expert on DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

KAYAK's tips to save more on a Denver to San Francisco flight

The most affordable time to fly from Denver to San Francisco is generally on a Saturday in September.

Cheapest Route: The Denver to San Francisco route is the most cost-effective.

Booking Time: Book at least 90 days in advance to get the best prices.

Budget Airline: Frontier Airlines typically offers the cheapest flights for this route.

Flight Type: Direct flights are generally more expensive, consider flights with layovers to save money.

Flight Type: Direct flights are typically more expensive, consider flights with layovers for savings.

AI-powered; AI can make mistakes.

Good to know

Low season

January

Cheapest flight

$104
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Denver to San Francisco

When to book flights from Denver to San Francisco

Are your dates flexible? Find out the best times to travel from Denver to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 Denver to San Francisco

  • Are there onsite hotels at San Francisco International Airport?

    While there are no hotels directly onsite at San Francisco International Airport, travelers with flights from Denver to San Francisco will be happy to hear that there are a number of hotels within close proximity. The Westin San Francisco Airport, Aloft San Francisco Airport, and San Francisco Airport Marriott Waterfront are all within two miles of the airport and offer free transportation to and from the airport.

  • Can I fly from Denver to San Francisco non-stop?

    Frontier Airlines and United Airlines both offer direct flights from Denver to San Francisco. Other airlines like Delta Air Lines and American Airlines offer one-stop flights with layovers in cities like Salt Lake City for Delta Air Lines and Phoenix for American Airlines.

  • What facilities are available for travelers with pets at San Francisco International Airport and Denver International Airport?

    In San Francisco International Airport there are seven pet relief areas available in the airport - in the Arrivals areas of Terminals 1, 2, and 3, plus there is an additional post-security pet relief area in each terminal, with Terminal 1 featuring yet another extra one. At Denver International Airport there are four pet relief areas: one in each core gate area for Gates A, B, and C, and then another one outside of Jeppesen Terminal.

  • Should I fly to San Francisco International Airport or Oakland International Airport?

    San Francisco International Airport and Oakland International Airport are both connected to BART, making them easily accessible for travelers who plan to use public transportation. However, San Francisco International Airport sits on the eastern side of the bay, while Oakland International Airport is on the western side of the bay. Thus, whether your final destination is on the eastern or western side is often the deciding factor when choosing which airport to fly into.

  • Does Denver International Airport offer a mood-boosting pet program for weary travelers?

    DEN understands that getting to the airline hub in time and navigating the maze of security and passport control can be stressful. The airport's animal therapy program, the Canine Animal Therapy Squad (DEN CATS), will brighten your day with a furry cuddle. You will encounter this dog squad donning violet 'Pet Me" vests throughout the airport.

  • What are the eco-friendliest airlines flying this route?

    Roughly 1717 lbs. of carbon is released on flights from DEN to SFO. Nonstop flights are eco-friendlier than layover flights on this route. If you wish to travel in an environmentally-responsible manner, consider booking flights with the eco-friendliest carriers on this route, United Airlines and Frontier. They release 41% and 39% less carbon, respectively.

  • Does San Francisco International Airport offer any support services for commuters with limited mobility?

    Yes. SFO wants all passengers at the airport to have equal access to their facilities. It has therefore invested in accessible services and amenities like TTY telephones at all terminals' baggage claim/Arrival levels. The airport's AirTrain is also wheelchair-accessible, and service animals are permitted. Be sure to state all of your requirements when booking your ticket.

  • What are some good hotels near Denver International Airport (DEN)?

    If you want to be on time for your Denver to San Francisco flight, spending the night at the nearby accommodations would be best. A good option is the Westin Hotel at Denver International Airport, an onsite hotel adjoined to DEN's Jeppesen Terminal. Holiday Inn Express Denver Airport and Hyatt House Denver Airport are other surrounding hotels with drop-off services.

  • Where is the San Francisco International Airport (SFO) car rental centre?

    You will want an SFO car rental to evade public transport inconveniences like unreliable schedules. You can easily obtain one at the rental car centre on McDonell Road- the AirTrain's Blue Line services connections from the airport. The AirTrain runs round-the-clock and leaves from the AirTrain departure level near baggage claim.

  • What are the inter-terminal transfer options at San Francisco Airport?

    SFO is home to four terminals (3, 2, 1, and International) and 115 gates within its seven concourses (A-G). If you wish to transfer to the International Terminal from Terminals 2 and 3, there is a connector walkway whose entrance is in Terminal 3, close to Gate G1. You may also use the AirTrain to the International Terminal A Station from Level 3 of Terminals 3 and 2.

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

    In the last 5 days, the lowest price for a flight from Denver to San Francisco was $104 for a one-way ticket and $191 for a round-trip.

  • Do I need a passport to fly between Denver and San Francisco?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

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

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

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

    The Airbus A321neo is the aircraft model that flies most regularly on the Denver to San Francisco flight route.

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

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

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

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

  • Which is the best airline for flights from Denver to San Francisco, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to San Francisco are Southwest and United Airlines. With an average price for the route of $352 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $385 and an overall rating of 7.4.

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

    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 Denver to San Francisco.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Denver 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 Denver to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Denver with another airline. Booking your flights between Denver and SFO can sometimes prove cheaper using this method.

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

    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 San Francisco from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $159 or less one-way and $286 or less round-trip.
  • Do the children need to work off a bit of energy after their flight to San Francisco? Fortunately for travelers with children, there are three children’s play areas in San Francisco International Airport: two in Terminal 3 and one in Terminal 2.
  • Denver International Airport is conveniently linked to downtown Denver area by both public transport and local highways. The A Line commuter train is the best option for travelers relying on public transport as it offers quick access to downtown straight from the airport.
  • Driving a car to Denver International Airport? The airport’s parking is located onsite at the airport. Covered parking is located outside Jeppesen Terminal. The shuttle buses, every 10 minutes, are found at Jeppesen Terminal on Level 5’s Island 4.
  • It never hurts to stretch the legs or get a bit of a workout in before or after a flight. Luckily for travelers with flights from Denver to San Francisco, exercise is made easy, thanks to San Francisco International Airport’s yoga rooms. There are two yoga rooms in the airport, located in Terminals 2 and 3, and they are both open 24 hours a day.
  • Looking to take public transportation at San Francisco International Airport? BART (Bay Area Rapid Transport) offers quick and direct access from San Francisco International Airport to all across the city. Terminal 3 at San Francisco International Airport hosts the airport’s BART station and reaching the rest of the airport is as easy as hopping on the airport’s complimentary AirTrain.
  • You can wait for your Denver International Airport (DEN) to San Francisco International Airport (SFO) flight at any of the lounges at DEN. These include American Airlines Admirals Club on Level 2, concourse A, and a USO lounge on Level 4, Concourse A.
  • If you want advice on San Francisco destinations, Airport Travel Agency has a counter in the International Terminal, Upper Level of SFO. They also make arrangements for transport to your hotel of residence.
  • DEN is re-known for its public art collection and murals. These include the Spirit of Colorado Mural in Concourse B, the Breeze Dance Mural in Concourse C, and the Family Ties Mural in Concourse A.

Prefer to fly direct from Denver to San Francisco?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Denver Intl to San Francisco.
Find which airlines fly direct from Denver Intl Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to San Francisco

Monday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Tuesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Wednesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Thursday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Friday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Saturday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Sunday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

See more direct flights

Direct returns

San Francisco to Denver Intl

Monday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Tuesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Wednesday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Thursday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Friday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Saturday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

Sunday

Frontier,Southwest,United Airlines

Frontier,Southwest, +1 more

See more direct flights

Reviews of the top 3 airlines serving from Denver to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Denver to San Francisco. 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 Denver to San Francisco? 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.
8.0
SouthwestOverall score based on 4230 reviews
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
7.0Food
Airline reviews

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

2.0 MediocreChristopher, Jul 2026
DEN - SJC
Read more Southwest reviews

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Connecting flight is on time and boarding was a breeze!

Southwest has a serious issue with keeping their passengers in the dark about delays. They also appear to lack the necessary crews to deal with any sort of hiccup in their operations. The way they run their day-to-day operations is a joke. You are telling me that a hail storm in Denver, where hail storms are incredibly common, results in hours of delays due to every plane needing to be inspected for hail damage? Understandable, but there seems to be a skeleton crew of maintenance workers undergoing this daunting task. There was no particular order of inspecting planes, leading to some planes only having an hour delay or less in others having four or more just because of the luck of the draw of what plane got inspected with no consideration to how long the respective delay was. The entire time the passengers were told nothing except the fact that there was lightning in the area and the ground crews could not load the bags. This always happens that Southwest will incrementally delay a flight with no information given, leaving many frustrated passengers fuming once they find out that their flight is canceled. Don't make people wait around for hours at the airport giving them no information, just to keep them on the hook and prevent any action from being taken by the passengers in terms of finding alternate routes of transportation or accommodations for the night. How many hours of people's times do you think you waste by operating like this? How about having a fully staffed crew in one of your busiest hubs that is famous for severe weather that can effectively deal with a situation like this, or how about having planes on standby to quickly replace in case something like this happens, like all the other major airlines do. This is just like the Christmas fiasco but on a Denver scale, but again this is literally just from a single thunderstorm going over Denver in the spring. I'm glad I've stopped using Southwest as my primary airline and have switched to United. Every single time I fly Southwest, something has to come up. It's ridiculous and I seriously can't wait to finish using my miles so I don't have to deal with your garbage anymore. You used to be so good and I don't know why you thought you could just scrap your quality and expect people to deal with it. Oh, and I walked by someone getting CPR for over 5 minutes in the concourse. I hope he was ok. Southwest needs something similar.

Flight had over 6 people in wheel chairs and there was only 1 gate agent. Very impressed though in how Maddie handled having to efficiency move that many people by herself. We still nursed in a timely manner.

I loved that the flight was not as full, so we were able to have seats available between us. I just wish wipes are available as we board so that we can clean our areas, as the window area was quite dirty in my case, on both legs of this trip, and it was hard getting the flight attendant's attention for this. She also seemed a bit stingy with the free drinks. I asked for two cups of drinks; she brought one and then waited until I fell asleep and brought the other. Not sure why...

Easy boarding, but no power at the seats and no television wasn’t a good experience.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

Flight was late - I was downgraded from first class to coach

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

See my previous comments. I was probably booked in business but was moved to economy

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Too many fees (but that seems to apply to all airlines nowadays)

United requires seat selection in order for those booking together to stay together.

Serving a coffr Or a Drink would have been nice.

Very bad! No good service delayed my second connection flight

Everything went as planned. Crew was great. Seats were still not that comfortable.

Charges unexpected. For seat that didnt recline. Please reverse extra seat and carryon charge. Bad business that is a bait and switch.

I couldn’t check in because the app didn’t work. It took 3 Frontier employees at the counter to get me checked in. Flight left 3 hours after departure time

Horrible! The short distance flight ended up taking 5 hrs! There was a 3 hr delay for the flight to take off and there was a 70 min wait on the tarmac for some bogus reason that the pilot said the gate he was supposed to board was taken up. After a 30 min wait he said the plane that was supposed to push out of the gate called a medical emergency and 40 min later he ended up boarding another gate. For the initial 3 hr delay there was no information/alert about the gate or delay in the app or the boards up until the boarding time and even beyond! Had to walk all the way to the end of the terminal to find the frontier staff to ask what was going on. Avoid this airline at all costs! If you have carryon bags or checked bags , their prices come equivalent to the prices of more reliable airlines. They are the worst in timeliness at 60% (reported as delayed) this year (check the data) by a high margin even compared to the second worst airline. If you are ok with having a miserable flight experience with the odds close to flip of a coin, feel free to try them. If you value your time , money and flying experience, stay away.

Our flight was delayed by four hours without notice, the app for getting my boarding pass is super confusing, and I wasn’t able to check a suitcase without paying for a higher cost package

First the gate was a total nightmare-no chairs anywhere! So over crowded and only one bathroom and nightmare of food service - took forever and NOT one place to sit. No inflight entertainment and had to pay 60.00 for a small carry on. I will never fly Frontier again!

Flight was 3 hours late leaving. Poor communication from the staff about delays. Impossible to get in touch with customer service (by design). And it actually didn't come out to be much cheaper than a non-budget airline! Not worth the headache, I'm never flying Frontier again

Lost baggage on my connecting flight. 24 hours later, still no update on my bags.

Frontier is a no-frills airlines were the focus is low cost. You get basic service so don't set your expectations high. Watch out thought because this airline, like a few others, will try to nickel and dime you.

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

Other airlines flying from Denver to San Francisco

Flights from the other most popular airlines that fly from Denver to San Francisco according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.