DEN - SFO

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DEN — SFO
May 18 — May 251
Round-trip
1 adult
Economy
0 bags
From?
To?
Wed 5/18
Wed 5/25

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Good to know

Low season

August

High season

November

Cheapest flight

$54

Average price round-trip

$176

Good deal round-trip

$228

Good deal one-way

$121
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Denver Intl to San Francisco
(avg. price over the last 2 weeks)
or less
or less

When to book flights from Denver to San Francisco

Estimated round-trip price
Average price per month
Flight prices as travel date approaches

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $121 or less one-way and $228 or less round-trip.
  • The cheapest flight from Denver to San Francisco was found 14 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be October, November and December. The cheapest month to fly is August.
  • Morning departure is around 3% cheaper than an evening flight, on average*.
  • 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.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking flights from Denver to San Francisco

Top 3 airlines serving Denver Intl to San Francisco

Scores according to KAYAK customer reviews
7.9
DeltaOverall score based on 30733 reviews
8.1Boarding
7.8Comfort
8.5Crew
7.8Entertainment
7.5Food
Airline reviews
Cons: "Delta.... they’rrrrrr Grrrreaaate!"
Read more about Delta
Cons: "Delta.... they’rrrrrr Grrrreaaate!"
Pros: "Delayed"
Pros: "Most of the crew was great with the exception of curbside check-in in Denver."
Cons: "Curbside needs to stop chasing cash tips and do their jobs. If they focused on that tips would be easy to come by. The curbside attendant that took my bag didn’t even bother to check my id. He asked me my name and asked where my destination was. I told him Cincinnati as a layover then LaGuardia where he said that was wrong. He then proceeded to print a boarding pass that wasn’t mine and load my bag into the conveyor. Not 5 mins go by when I realize what happened I wound up having to go to special services to rectify the situation. Which ultimately consisted of me waiting another hour in LaGuardia to get my bag. Please delta have these curbside handlers actually want to do their job and stop chasing cash tips."
Pros: "Crew was very pleasant. Boarding and deplaning was smooth and easy!"
Pros: "I think Delta is upping its game, and I’m pleased to see that. Almonds for snacks, phone info about the state of your checked bags—good stuff."
Cons: "Of course the seat was not “super comfortable,” but whe you pick Economy, you know that."
Pros: "Availability of WiFi, a charging port and media options puts Delta a step (or two) ahead of their competitors. The professionalism of the crew, as well as the complimentary food/beverage options are also excellent."
Cons: "Not the airlines fault, but my 6’4” frame doesn’t fit very well in a middle main cabin seat."
Cons: "We weren't alerted there was a chance of delays. Over two hours late."
Pros: "No food, late by hour"
Pros: "Excellent crew and clean aircraft"
Cons: "Sat on tarmac for 20 mins because we were early..."
Pros: "We arrived eventually."
Cons: "Flight delayed three hours. Payed extra for an earlier flight. Very disappointing."
Cons: "Delayed 4 hours"
Pros: "Flight left on time and landed on time"
Pros: "Very comfortable, no complaints."
Pros: "Comfort + was nice."
Cons: "Had a middle seat between two other men. I was given my seat by the gate. It would have been nice if they placed my more strategically. That might be asking too much but seems reasonable."
Cons: "No delays. And have the terminal bridge in working order"
Cons: "Choice of healthier snack"
Pros: "Yes"
Cons: "Took off late. Other than that very comfortable and great experience"
Pros: "Good airframe."
Cons: "3+ hours delayed; didn't arrive until 3AM."
Cons: "Seats are so small. Flight was delayed."
Pros: "I really enjoyed the service on Delta. The entire process was better than what i've come to expect on airlines. My flight attendant was Kate, and she was awesome - super friendly, professional, thoughtful."
Pros: "It is a busy travel day and this flight was unbelievably smooth. The entire crew was competent and friendly."
Pros: "Having three seats."
Cons: "I had three seats to myself! After getting elbowed all the way from Amsterdam to Minneapolis, I was tired and I slept three good hours."
Pros: "Better than average entertainment system for domestic flights."
Cons: "Boarding done against logic: my seat was in the last 5 rows of the cabin and I was scheduled to board in the final group. When I got to my seat the first 30 rows were nearly fully, but the back of the plane was half empty. The whole time the gate agent was urging passengers to move faster through the aisle, but Delta should really rethink its boarding strategy. It shouldn't take 40 minutes to board a 757."
Cons: "Kayak a howed my gate as something that didn’t exist at the terminal. I went to a kayak help desk to have a ticket printed that showed my TSA precheck because it wasn’t showing on my mobile ticket, and no one was there to help. I waisted for 10 mins. It then took me nearly 2 hours to get through security. I asked if I could get through quicker and was told I could not, despite it being passed my boarding time. I then ran to my gate where I waited for another 10 mins (no one was there, again) and then an employee came out and said they couldn’t let anyone board once the door was shut. He then directed me to the delta help desk (there was at least 20 people behind me who missed their flight). I then had to pay an additional $75 to get a later flight. The whole experience was awful and I’m disappointed with Kayak and the gate confusion, but mostly Delta and the lack of customer service."
Cons: "The seats were in bad condition, I was surprised as Delta usually has well cared for interior and exterior airplanes."
Cons: "Sat on the runway for over an hour to get the gate. Unacceptable."
Pros: "The flight attendants were all helpful and pleasant. The seats were comfortable. We were provided with plenty of liquids."
Cons: "The landing was pretty tough and we took off almost a half hour late."
Pros: "Very friendly gate attendants helped us fix the problem that our frequent flyer number had not been entered on the boarding pass. This may have been because of the booking co., Just Fly."
Cons: "Would have liked more seat options, like when I book on Delta's website. Didn't have enough advance warning."
Pros: "Food and entertainment was good"
Cons: "The bathroom I used was disgusting."
Pros: "Check in Denver super helpful Gate staff hustled to turn around flight Flight crew excellent"
Cons: "Flight delayed, almost missed international connections"
Pros: "On time"
Cons: "Take a long time to taxi to the gate & getting off the plane."
Pros: "Everything was great, easy boarding, great idea (board ahead of your zone if you check bag free at gate), courteous staff, good food choices, arrived ahead of schedule, good movies."
Cons: "Engine problems-2 hour delay"
Cons: "Poor Delta DEN counter agent experience. Name on ticket didnt match Delta profile name nor TSA [rofile name. Delta counter agent would do nothing, except blame TSA. Would not check ticket name vs profile name. Happened two consecutive flights. Flight tomorrow morning has no TSA Pre clearance on boarding pass. This will be three consecutive flights. Also seated me next to a person who needed 2 seats to himself. Please never seat me next to a passenger who cannot fit in their own seat. I am switching to SWA."
Pros: "The movie selection is very good"
Cons: "Both boarding the flight and getting off the flight were severely delayed. The flight attendants also seemed to ignore half the plane when handing out drinks and when picking up trash. I had to flag someone down after they had simply walked past my row both times."
Pros: "Being on time."
Pros: "Crew was nice."
Cons: "The Entertainment sucked. Again I was sitting in comfort class which in theory should buy you more comfort and better entertainment. There was a ton of movies from the 90s and the same movie selection from about 6 months ago when I traveled with them. Also, what is going on, with having to use your own cell phone to watch movies on the plane? Whatever happened to the screens in the backseat of the front seat? I ended up with neck pain from trying to watch a movie on my phone. Delta has become very cheap. It is going into some serious decline."
Pros: "Nothing"
Cons: "Let me just say that I’m a loyal Delta costumer until now. The flight attendants (the two women) were an absolute nightmare. They were so rude and condescending. I was carrying with me my service dog and a bag containing an expensive medication (it couldn’t go on the top bin). Despite being in the comfort class and having the seat next to me empty, we were tight for space. The flight attendants were unreasonable and forced me to put my medication on the top bin despite the fact I had told them it was extremely delicate, that it that to go upright, and that I needed to keep it with me. They did not listen and pressured me into giving them the medication. The medication could have easily gotten broken. Thankfully it didn’t but this is no way to treat a human being."
Pros: "Entertainment system is awesome and similar to what I usually see only on international flights."
Cons: "Force me to take a bad seat"
Pros: "We were not happy with our flight my flight got cancelled 3 times I miss work they need to reimburse us and also reimburses the hotel cuz we had to stay at a hotel because they cancelled our flight three times and then our flight that we went out on Monday was late because of a flight attendant arriving late to the hotel to the airport"
Pros: "Most comfortable flight I have taken in some time. Spacious seat, power, good entertaiment, attentive flight crew. On time. Not usually a Delta flier, but times and destination made Delta the choice. Turns out a great choice."
Pros: "It got me to SFO earlyish"
Cons: "Was told to go away and wait for name to appear on screen for seat assignment. Was seated apart from travel companion. Got to sit next to folks with questionable hygiene, seat broken. Seatbelt broken. Stuck in back of plane window seat and was supposed to be “happy”. I was brilliantly ignored by crew. Seat back entertainment broken snd flight crew never answered the call button. Got to watch bag handlers throw and drop luggage like true gorillas. Delta, this time you truely are the worst. Wont book you again."
Pros: "We'd paid extra for main cabin so hot to choose seats and got in flight entertainment.. Staff were friendly."
Cons: "No free wifi."
Cons: "Zero communication to the passengers as to why we were delayed for almost an hour sitting on the plane"
Cons: "I fly Delta quite often, and am usually pleased with their service, but the morning of June 23 was terrible. I got to the airport in Denver at 5:30 am for a 7:30 am flight to Atlanta, and the line to check a bag was about 40 people long. I waited 55minutes to check my bag, as they kept moving the ski priority people, and people in danger of missing their flight, to the head of the line. There were obviously not enough Delta workers on staff to process all the flights at that time."
Pros: "They arrived on schedule."
Cons: "Seated in the rear middle seat. I had no options to select a seat when I checked in or made my reservation that wasn't an extra charge. I'mover 6' tall and middle seats are painful, especially cross country. Airlines need to be a little more attentive to their customers' needs. If a passenger is taller than average, and the flight is more than 60 minutes, provide comfortable seating at no extra charge. If a customer has a short layover, which their system knows about since it is the sourve of the flight plans, put the customer toward the front of the aircraft since these flights are habitually late and customers end up having to sprint through airports to try to make connections."
Pros: "We took off and landed early. The crew was wonderful and the snacks were exactly what I needed."
Cons: "We landed early and were stuck waiting on the plane for an hour and fifteen minutes for a gate to open."
Pros: "The flight attendants were so nice and accomadating. Even came by to refill our waters! I've never been on a flight with such friendly flight attendants!"

Arrival an hour late because the plane was having an issue!

Cons: "Clear checkin needs to have better coordination with TSA agents."
Cons: "7 hour delay"
Cons: "the seats are very uncomfortable."
Cons: "We should have had less in our carry on so we had more leg room. The staff was friendly and very helpful. There was plenty of movies, tv options, and games to pass the time when we weren't sleeping on the over night flight."
Pros: "Timely and comfortable"
Cons: "The prices of tickets"
Cons: "I was traveling with two kids and they used my phone for shows and I brought another older Oppo phone for the myself. It just wouldn't work with the united app to open up the movies. Was unfortunate because I had two flights."
Pros: "Personal entertainment system"
Pros: "The crew and the fact that they at least acted like they cared."
Cons: "After UA posted a four hour delay for my original flight, I switched to the next available 1.5 hours later. That flight got delayed and then delayed some more, and by the time I got to SFO, the flight I originally booked, landed about 20 minutes later."
Cons: "Flight was 65 mins delayed due to mechanical issues. Updates came from flight attendants insisting gate agents update the flight status."
Pros: "Food was great"
Cons: "I didn't go on my trip. My course in SF was cancelled and United would n't refund my money or change the dates for my trips because of there basic economy package. They have 3 different economy packages and the economy basic doesn't get refunds and you can't change the flights if needed. It feels like they are banking on increasing there ROI with this basic economy ticket which is 40 -60 dollars cheaper than the next economy package. Intuitively they know people will pick that, but if something comes up the customer is screwed."
Cons: "Hold time on tarmac. Over an hour. In a hurry to board people. If they knew they had a delay due to weather they might have done some better planning"
Cons: "Boarding group is getting huge!!!"
Cons: "The delayed flights and neck pillows."
Pros: "On time!"
Pros: "Good flight with no issues."
Cons: "No complaints"
Pros: "Cool crew"
Cons: "Delayed flight"
Pros: "Got an aisle seat"
Cons: "Plane was late. No Wi-Fi."
Pros: "I enjoyed my interaction with the other passengers."
Cons: "Several delays compounded to make trip a lot longer and far less comfortable than it needed to be."
Pros: "Nice seats, very helpful staff at ticketing and nice crew"
Cons: "Reservation was deleted so check in took a very long time and my seat (reserved weeks in advance) on the long international flight was reassigned to a very undesirable location."
Cons: "I was charged twice for my ticket"
Pros: "Friendly crew"
Cons: "Sardine can with no amenities. What value."
Pros: "Nice Hosts?"
Cons: "Cant watch TV for free- stuck watching gold rush whatever that is. Seats were uncomfortable knees felt cramped up smelled funny could not sleep, because the seats were not comfortable we sat at the gate for too long we took off late why didnt we de-ice beforehand? I dont understand why they say "we need to check your bags" when there is plenty of overhead space. It's stupid"
Pros: "I like that this flight got me from point A to point B. It was uneventful."
Cons: "I am tall and there is never enough leg room"
Pros: "Chief flight attendant was nice and attentive."
Cons: "Our section of the plane was very warm. When we mentioned it to one of the attendants, she pointed to the overhead vents and told us to use them. (We already knew this and had them open all the way!) Then the chief flight attendant came by and she was VERY responsive and went to tell the pilots. It got a little better but still stayed on the warm side the rest of the way. Your boarding process makes no sense and does nothing to get passengers settled faster. After priority seating is done, let the people in the BACK of the plane board first, then the middle section passengers, then the Eco Plus passengers."
Pros: "Nothing"
Cons: "Our flight was delayed which caused us to miss our international connection. Flight attendants did not care, did not attempt to get us out faster, or put on a different flight. Asked for an announcement to be made on board or to be moved to seats closer to the front so we could get off the plane quicker, did not happen. Offboarded and sprinted across the airport for our international connection and was notified by gate attendents that the gate closed five minutes ago and that they could not let us on the plane. Meanwhile, the plane sat there for an additional 30 minutes while it fueled and waited for release from air traffic control. There were six travelers total stuck there in San Fran at that gate, all of us begging to be let on the plane to Beijing, the last one for over 24 hours. Zero compassion from staff at the the airline gate. They did not care about us and did not care about leaving their travelers stranded. Our total travel was Denver to Bangkok, 26 hours of travel including layovers in San Fran and Beijing. In San Fran (after missing the gate connection), United rerouted us through Haiwaii and the customer service agent that did this reroute did not finish the reroute to our final destination. We got to Haiwaii and were stranded again, at the United service desk for four hours having to once again provide documentation of our initial travel plans to Bangkok, having them build a new itinerary to our final destination. Overall, 20 additional travel hours have been added to our itinerary, almost double our initial travel time. We have had to call and cancel pre-arranged bookings in Thailand as we are now missing two full days off our trip. I am absolutely disappointed and heart broken as I write this still stuck in the Beijing airport waiting another six hours to connect to Bangkok. My fiancé and I were traveling to Thailand to get married and have received no compassion from anyone at this airline to try and get us there. I fly United for work quite frequently and have never experienced such horrendous service and lack of basic human compassion. I am flat out disgusted by United and will not be using them again, for personal travel or work related trips, because of this horrendous experience."
Pros: "Crew did a great job. Air China had much better food service."
Cons: "Seats two small, not enough room to stretch your legs. Bathroom to small. Designed for people less than 150lbs, and 5'-6" in height Not comfortable for people over 6' tall."
Pros: "Boarding was easy and organized."
Cons: "Older plain with less leg room. Had to pay to watch a movie. Little bag a snack are little!"
Pros: "The FC Cabin is very comfortable; The service was also excellent"
Cons: "The food was mediocre"
Pros: "The crew was efficient"
Cons: "The entertainment couldn't be downloaded without their application"
Pros: "The stuff were accommodating and fun"
Cons: "Seats in economy were cramped! Chair barely leaned back at all. Woke up with a sore neck. Cabin was freezing!"
Pros: "Price was good. If it'd been an expensive ticket I'd have been upset"
Cons: "Pay for carry on luggage, last board plane despite having a window so everyone had to get up to let me in, no check in 24 hours in advance unless paying for baggage, in flight entertainment didn't work, seat charging outlet didn't work."
Pros: "Seats were comfy and I liked that the screens on the back of seats had a map of where we were in the flight."
Cons: "Wifi was kind of expensive- I bought 30 minutes for like $3- but it didn't even work. Maybe got 5-10 minutes of actual internet out of it, the rest was frustrating loading pages. Not worth the purchase."
Pros: "Nothing"
Cons: "Couldn't even get me a slightly better seat given all the hassles I'd been put thru up to that point."
Pros: "Flight was shorter than expected"
Pros: "On time from Checking In and Departure"
Cons: "EVERYTHING. My flight was originally scheduled for 650p. I understand that weather can cause delays. That's OK. However, the flight departure kept getting shifted. We ended up boarding for a 9:58p departure. I was told there was no more overhead space for my bag and forced to check it. When I got on the plane at 930p, there was clearly enough overhead room for my bag. I'm not sure why I was forced to check it. We then sat from 930p to 958p. We pulled away from the gate and then were told that we had to wait another 20 min. We turned off the engine and then waited until sometime between 1130-45 ON THE AIRPLANE on the runway. Is this even legal?? We finally took off and landed at 115a PST. I waited for 35 min for my bag that they forced me to check. They loaded our bags onto the wrong carousel, which caused all of us to be waiting for our bags in the wrong place for 10 minutes. This was the worst experience I've ever had flying. It wasn't the delay but the lack of clarity, being forced to sit on that plane for hours, and having my bag taken. I got to the airport in Denver at 550p PST and got home to SF at 3a PST for a 2 hour flight."
Cons: "Food was mediocre. Some staff was friendly, some was NOT"
Cons: "Power outlets worn out and won't hold a plug so they are unusable"
Pros: "On time"
Pros: "Left in time"
Cons: "The plane was so unbelievably hot. The air hardly blew out of the vents. Also, they left the lights on the entire time on a flight that left at 10pm and arrived at 12:30pm (11:30pm local time). It made for a very uncomfortable ride"
Pros: "There was nothing to like"
Cons: "Departed 45 mins late. Flight attendants too old, opinionated and grouchy for the job. Ground crew not any better."
Pros: "Professionalism of check-in staff"
Cons: "Unfriendly flight attendant"
Pros: "Free wifi, one free snack and drink, overall one personal item and one free carry on bag."
Cons: "Wifi wasn't excellent and the crew should tell the passengers that they give out one free snack and drink."
Pros: "The employees were very helpful on both legs of the journey and the conneting flights were conveniently located in the same area. Pilot was good about letting us know time frame of mechanical issue repair while on tarmack."
Cons: "The seats were incredibly uncomfortable. Must be the type of plane because never really had issues on other flights. We noticed many carry on bags others brought on bosrd were oversized. On leg from Kalispell to Denver the crew were diligent in spotting larger bags and tagging them for under plane storage for the flight. From Den to SFO however not so much. This led to most bins being filled ahead of our group 4 boarding with larger than permitted carry on bags. Obviously larger! Luckily we were able to put our smaller bags (which we made sure fit to overhead storage specs ahead of time) under the seat for flight but that made an uncomfortable 2.5 hour journey. Actually over 3 hrs because there was a mechanical problem which had us sitting on the tarmack for over 30 minutes from Den to SFO. We've flown United before without much incident but this trip in particular was pretty crappy."
Pros: "Night flight. Impossible to sleep with so many devices on."
Cons: "The screen button is on the armrest and gets turned on inadvertently constantly disturbing our sleep."
Cons: "We were stranded for hours and the information given to us was minimal."
Pros: "Smooth. Flight was delayed due to late arrival of our plane. It actually worked in our favor since we booked the flight so last minute if it hadn't been delayed we would have missed it! So, the delay was great! :)"
Cons: "space! I'm sure he hear it all the time but, I'm a smaller person and I'm still cramped. Thankfully it was a short flight. Just wish it could be more comfortable."
Pros: "Loved the full experience with the airline including the boarding experience."
Cons: "The food options could have been improved!"
Pros: "Nothing"
Cons: "Crew members could have been more friendly, boarding could have been quicker, no compensation for extreme delay"
Cons: "We missed this flight because our earlier flight was delayed and all frontier would do is tell us that we could “google” flights on other airlines to get us where we needed to go. No hotel voucher for the forced overnight, no refund for the missed leg, nothing. I really don’t understand how this company is in business."
Pros: "Nothing"
Cons: "Frontier is the worst airline. No sense of flight time, service is horrible, seats are terrible, flight stinks. And prices are not cheap at all. They fly whenever they like."
Cons: "Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why."
Pros: "Nice flight with competent crew."
Cons: "Kiosks did not work for check-in so I had to queue up and wait for help. Then I got charged $45 for a carry-on. Not a great start to the day."
Cons: "that it cost $45 per bag whether you used baggage shipped or carried one. Was then told if did,t pay it at counter, would cost $60 upstairs to carry on. Would only use airline as last resort due to this tactic"
Cons: "The flight was delayed an hour and the website would never work on my phone to check in and pay for our baggage."
Pros: "The seats don't recline, thy is the way for short haul flights"
Cons: "Dreadful bag drop. Awful! What is wrong with management at Frontier?"
Cons: "They didn't know how to handle the unpleasant situation of having delay due to "the plane is having some problems and they will try to fix it asap before departure"."
Pros: "Clean new planes and very friendly crew."
Cons: "It got delayed on my inbound trip for over an hour and a half for no real reasons (all were excuses: weather, crowded landing at SFO, air traffic controller did not give the green light, etc.). On the way back we had to wait over 45 minutes for the plane in our gate to move out of the way so we can get in."
Cons: "Plane was 2 hours late, no advance notice of the delay, and was on the hangar the entire time. No accommodations for delay and."
Pros: "Gate crew at Denver on May 2nd (afternoon) were just disorganized and confused. She was just stressed out for no reason. Seems like not a people's person and can't stay calm at ALL. Can't handle stress at all"
Cons: "4+ hour delay in Denver caused us to miss the last airport hotel shuttle and made us spend more on food and drinks in Denver. Extra money for a cab in SF. My 6 year old slept on the filthy airport carpet at the gate because at the seats had arm rests. Not even an apology from the airline."
Pros: "Nothing."
Cons: "After building in additional fees paid for seats didn't really cost less than competing airlines. No reclining seats. First airline where you had to pay for everything including soda."
Pros: "That eventually I made it to SFO. Also too that the jerk sitting in front of me was corrected by a fellow traveler. All through the flight the guy kept egging for a fight with someone but thankfully disappointed."
Cons: "When my ticket was originally resevered I printed out the flight info than. I was to go out Alaska and come back on Frontier. On the day of my flight I checked my email and was confused because it showed Frontier instead and if I checked in online I had to pay 15.00 more dollars to pick a seat. This is at 4:00a.m. in the morning and my visa is downstairs. I'm not paying another 15 for a seat I should already have. When I get to airport, I'm told not Alaska but Virgin. I run to Virgin only to find it's Frontier and instead of 7:15 the flight leaves at 7:00 and I had to wait in line to get this info because kiosk wouldn't let me log on. Needless to say I had to book the next flight that came 8 hours later. Why so few flights to SFO and if all three of you are connected why couldn't the rep. book me on one of the other two? I was responsible to get there 2 hours ahead but I could have made it if the paperwork had not been so confusing."
Cons: "Seriously, extra charge for a seat and carryon? Crappy plane, etc."
Pros: "Friendly flight attendants; apparently a diverse or progressive hiring policy"
Cons: "Seat couldn't be reclined which is below standard; checked-in baggage too expensive ($40 - that's not a fair price, it should have been no more than $25 as with competitors, ideally $0 to $20); was not able to use cash to pay for baggage at the counter; the need to pay for snacks and drinks on board (at least a cup of juice, tea or coffee should be offered as I see it but this is not a make-or-break point)."
Pros: "Not much"
Cons: "How does it save you money to make it so my seat doesn't decline. It what world does charging me me for a carry on make the flight better or "enhance" the customer experience?"
Pros: "Flight delayed for hours, no food vouchers, no alternatives offered even though flight if it goes at all will arrive almost at midnight. We are still in Denver. Scheduled to leave for SFO at 6:55-now maybe leaving at 9:45 pm. I will miss the last Amtrak train home."
Cons: "They lost my luggage, never filed my claim until two days and 3 people later, and I didn't receive my bag back until 4 days after and the delivery guy was mad at me because even though I told 3 different people my address and wrote it down before leaving the airport, they never told him."
Pros: "Didn't like anything"
Cons: "Upon arrival in Denver, made us sit on runway for an hour. Rude flight attendants. Upon return to SF, it took an hour to get our bags to baggage claim with no communication from Frontier staff. I don't think anyone likes their job at Frontier."
Cons: "Frontier charges extra for a seat upon check in and also for a carry on! Terrible scam!!!"
Cons: "Arrived 45 minutes before flight, but attendant didn't accept my check in bag, and didn't let either of us proceed to the gate even though we both had checked in already."
Cons: "The crew completely indulged a 3 loud passengers who announced that they wanted to get drunk -- and did; they clearly had a great time the whole time, and too bad for us; the crew member who served them seemed to be into them and probably wanted to join them, but it was pretty lousy experience for the rest of us... Will not be planning to fly Frontier again... baggage fees high."
Cons: "I'm not one to write negative reviews on the Internet, in fact, I've never done it before. But, my recent experience with frontier left a bit to be desired to say the least. I took the red eye from SF to Cincinnati Sunday/Monday 9/25-9/26. On this flight, I encountered the noisiest and most disrespectful crew of flight attendants I've experienced to date. As passengers on the back of the plane were attempting to slee, the crew members carried on a raucous conversation at high decibel levels; ignoring obvious stares from perturbed passengers. It got so bad, that at one point I moved to the front of the aircraft to attempt to distance myself from it. Then, on the connecting flight back to SF (from Denver), as I boarded the aircraft, I and several around me noticed a rather foul odor coming from the aisle. A toddler who was carrying his own diaper had dropped it in the aisle, spilling the contents. A crew was brought in to clean, causing for a 40 minute delay, but the scent lingered throughout the remainder of the 2 and a half hour flight. I am generally not a fussy customer, and have no problem with fewer amenities if it means a cheaper flight. But as one that travels frequently for work and personal reasons, will think twice before stepping on another frontier flight. I would ask that the company consider a voucher or refund to compensate."
Pros: "Nothing!"
Cons: "The rude staff (gate staff and flight attendants), the five hour delays without apologies, frequent gate changes, the indiscriminate charges for bags (some passengers were charged for every single item they took on the plane, including small purses, others weren't charged at all). Our flight finally landed at 2am (4 hours late) when there were no shuttle buses, trains or any other form of public transportation that so many of us were relying on to get home. The airline staff refused to address this problem and the "manager" that we were all told to talk to just "disappeared". When we challenged the luggage person who worked for Frontier, she said we were lucky we got our luggage and should be grateful for that!"
Cons: "There was wine throw-up in my seat and on the wall when we boarded. No compensation or alternatives were offered. The flight was spent sitting in an uncomfortable, wet seat with the aroma of freshly cleaned wine puke. The lack of legroom was intolerable."
Pros: "I liked the crew"
Cons: "The flight was stacked with hidden fees and charges after my purchase. We had to pay for seats - in addition to the ticket price?! We had to pay for carry-ons.. And their food and beverage service has a price tag attached to everything. "Surprise! Your $50 flight costs $150 by the time you actually arrive!" ..sneaky."
Cons: "I will never fly frontier. they changed gates 3 times, turned off AC, had no one to push back the plain and so on. too many to list."
Cons: "Mistake with wrong gate number, no food, crew with out smile, plain with no plug in inside"
Pros: "Nothing."
Cons: "The flight was 5 hours late, our gate was switched 3 times, no compensation was given and frontier airlines did not apologize to the passengers. There should be a law against this airline, they do this on a constant basis. The airline is being run my idiots. John Ramos"
Pros: "Nothing."
Cons: "Everything."
Cons: "1. They charge for every little thing. Each checked bag is $25.00 and each carry on is $35.00. They also charge you for a seat. So once you purchase your ticket, you then have to pay an additional fee to seat down. 2. The staff is unprofessional. Not only does everyone look sloppy, but the staff is comprised of individuals that don't care at all about customers and have been poorly trained. The quality is very low. 3. I was hit and then verbally abused by a gentlemen on the plane, they laughed and did nothing!!!!! 4. They only allow 15 bags on their plane! After 15, they will move your bags to a different plane without telling you. What kind of nonsense is that?!"
Cons: "Reported missing bag immediately to agent in baggage area. Called for a status next day, nothing. Went to the airport on day 2, was given run-around and the wrong delivery company contact info. When bag was delivered to porch, it was the wrong bag so I had to call again to have delivery person bring my bag."
Pros: "Except for perfectly nice crew, nothing was good about this flight."
Cons: "They charge $40 for carry on bags that don't fit under the seats, so we ended up checking our carry on for $30. WTF? This was not made clear up front when I purchased the tickets. People always complain about seat comfort and I'm usually easygoing about that, but these seats were extremely uncomfortable. They are not much better than auditorium folding chairs. My middle seat was lopsided perhaps with a broken spring on one leg of the flight. The seats do not recline and the fold down table is approx 4"x7", not large enough to rest an ipad. I will go out of my way never to fly Frontier ever again unless something dramatically alters."
Pros: "Nothing."
Cons: "I'd rather hop to San Francisco than fly frontier. A 4 hour 7 minute delay is a different flight than I booked."
Pros: "The minimal interaction I had with the Crew suggested that they were nice."
Cons: "It was continuously delayed a total of five times. It was not explained why things were delayed. The spaces were cramped and the trays were small. Leads me to be interested in traveling in other "cheaper" airlines such as Spirit."
Pros: "Water is free!! Yahoo!! Wheelchair was free!!! Yahoo!!!! Thank god for small mercies."
Cons: "A dog that kept sneezing behind my seat, the little stow away table that is smaller than an iPad mini, paid cabin bags - is frontier expecting travelrs to go without bags/clothes??? The baggage was late by 1hr, 30mins -- the carousel was disfunct, and terrible."
Pros: "Handled the flight delay well."
Cons: "Crew was very rude. At one point I had my hat over my face as I was falling asleep, then one of the stewardesses grabs my hat off my face and pokes me to pay attention to the emergency instructions. There are better ways of waking people. She continued to give me attitude the rest of the flight."
Pros: "Got me from point A to point B"
Cons: "Gate change at the last minute and the wrong destination city was displayed on the monitor for our flight, causing more confusion. Flight delay, as well"
Cons: "luggage was lost seating very cramped had to rush to board, almost missed connection"
Cons: "Seats don't recline, food tray very small, no free beverage except 1 cup water and most of all the unexpected 60 dollar charge for a CARRY-ON! Like the carry-on that easily fits in the over head space above and no one else charges for."
Pros: "When I arrived at Denver airport, my baggage was checked in less then ten minutes, the people were cheerful and helpful; the flight was enjoyable and attendants were friendly; we arrived safely on time and my baggage arrived very quickly"
Cons: "The seats were uncomfortable but ok for an under three hour flight. I was unhappy in San Francisco when the registration line didn't open until two hours before flight. That worried me concerning getting through long security lines on time."
Pros: "nothing"
Cons: "everything. what has happened to frontier? wont fly them again"
Cons: "Boarding - people who sit up front go first meaning that those that have seats in the back have to go in past people who are still in the aisles arranging themselves. I could not get a drink of water without paying. Is it really that esxpensive to give a coke and some peanuts??? Paying for seat selection means that some people get in the seats other peoiple want (like window seats) who don't want them. I tryly believe that Frontier is the nickel and diming airline. And I don't believe you had to wait for a gate and 11:30 at night."
Pros: "This last leg of my flight was better than the rest. The crew was friendly enough and the flight was smooth."
Cons: "Overall Frontier is a bare minimum airline and that's why tickets are less expensive. Rather pay more to get some amenities."
Pros: "That they got me to my destination safely."
Cons: "This airline is a joke. Shame on me for booking late and choosing the cheapest ticket. BUT knowing what I now know, I would have selected the Delta flight for $80 more. Here's why: No TSA Pre-Check. This aspects alone is a deal breaker. Pay for carry-on bag AND IT COSTS $40. Pay for beverages, snacks. Seats don't recline - "pre-reclined for your maximum comfort." Whatever Tray table is metal and tiny. You couldn't even fit an iPad mini on it, let alone a lap top. So, I put my MacBook on my lap to work, but it's uncomfortable, MacBook slides off. You're hitting the person next to you with your elbows. AND I have to take off my jacket, to protect my MacBook against hitting the metal tray table, so I got cold. No internet. It's 2016. No internet. It's 2016. Never again."
Pros: "flight staff"
Cons: "OUTBOUND - confusion for me and others as gate changed and we had to go to international for domestic flight - thought it strange to suggest I pay additionally for a seat and a carry on. RETURN - again confusion for me and others as gate changed and no gate personnel at kiosk for quite awhile They don't even give a pretzel snack on these flights."
Cons: "Getting charged 60 dollars at the gate to bring my bag onboard and not being told at booking online that the price would increase isn't cool. This was my first trip with Frontier and will be my last. I am a business traveler who spends roughly 80k a year on travel-- and I'll never fly frontier again"
COVID-19 information

Safety measures for airlines flying from Denver to San Francisco

Airlines flying from Denver to San Francisco have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Denver to San Francisco

Mandatory masks

Masks required on board, masks provided on flights from Denver to San Francisco

Social distancing seating

Middle seats unavailable to book on flights from Denver to San Francisco

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Denver to San Francisco

Flexible cancellations

Waiving of change fees. Search flexible flights from Denver to San Francisco

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Recent round-trip flight deals

6/7Tue
1 stopFrontier
13h 23mDEN-SFO
6/13Mon
1 stopFrontier
9h 50mSFO-DEN
$139
6/7Tue
1 stopFrontier
13h 23mDEN-SFO
6/14Tue
1 stopFrontier
9h 13mSFO-DEN
$141
6/7Tue
1 stopFrontier
9h 39mDEN-SFO
6/14Tue
1 stopFrontier
9h 13mSFO-DEN
$147
5/28Sat
1 stopFrontier
6h 37mDEN-SFO
5/31Tue
1 stopFrontier
18h 38mSFO-DEN
$149
6/15Wed
1 stopFrontier
9h 58mDEN-SFO
6/21Tue
1 stopFrontier
9h 13mSFO-DEN
$153
6/14Tue
1 stopFrontier
10h 04mDEN-SFO
6/21Tue
1 stopFrontier
9h 13mSFO-DEN
$160
6/15Wed
1 stopFrontier
9h 58mDEN-SFO
6/21Tue
1 stopFrontier
9h 13mSFO-DEN
$162
6/15Wed
1 stopFrontier
9h 58mDEN-SFO
6/21Tue
1 stopFrontier
9h 13mSFO-DEN
$164
5/28Sat
1 stopFrontier
9h 48mDEN-SFO
5/31Tue
1 stopFrontier
18h 38mSFO-DEN
$169
6/7Tue
1 stopFrontier
26h 54mDEN-SFO
6/14Tue
nonstopFrontier
2h 43mSFO-DEN
$170
6/21Tue
1 stopMultiple Airlines
10h 22mDEN-SFO
6/29Wed
1 stopMultiple Airlines
6h 13mSFO-DEN
$171
6/21Tue
1 stopMultiple Airlines
10h 22mDEN-SFO
6/27Mon
1 stopMultiple Airlines
13h 08mSFO-DEN
$172
6/14Tue
1 stopMultiple Airlines
10h 04mDEN-SFO
6/22Wed
1 stopMultiple Airlines
6h 13mSFO-DEN
$173
6/7Tue
1 stopMultiple Airlines
13h 23mDEN-SFO
6/8Wed
1 stopMultiple Airlines
13h 18mSFO-DEN
$174
6/14Tue
1 stopMultiple Airlines
10h 04mDEN-SFO
6/22Wed
1 stopMultiple Airlines
6h 13mSFO-DEN
$176
6/15Wed
1 stopMultiple Airlines
9h 58mDEN-SFO
6/22Wed
1 stopMultiple Airlines
6h 13mSFO-DEN
$187
6/22Wed
1 stopMultiple Airlines
10h 16mDEN-SFO
6/29Wed
1 stopMultiple Airlines
6h 13mSFO-DEN
$190
6/17Fri
1 stopMultiple Airlines
11h 07mDEN-SFO
6/21Tue
1 stopMultiple Airlines
9h 13mSFO-DEN
$192
6/7Tue
1 stopMultiple Airlines
9h 39mDEN-SFO
6/10Fri
2 stopsMultiple Airlines
18h 13mSFO-DEN
$193
6/6Mon
1 stopMultiple Airlines
10h 54mDEN-SFO
6/13Mon
1 stopMultiple Airlines
9h 50mSFO-DEN
$195

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Recent one-way flight deals

6/7Tue
1 stopFrontier
26h 54mDEN-SFO
$54
6/7Tue
1 stopFrontier
26h 54mDEN-SFO
$60
6/28Tue
1 stopMultiple Airlines
10h 22mDEN-SFO
$80
6/7Tue
1 stopFrontier
13h 23mDEN-SFO
$82
6/1Wed
1 stopFrontier
25h 44mDEN-SFO
$83
5/24Tue
nonstopFrontier
2h 43mDEN-SFO
$84
6/14Tue
1 stopFrontier
10h 04mDEN-SFO
$86
5/31Tue
1 stopFrontier
9h 39mDEN-SFO
$89
6/22Wed
1 stopMultiple Airlines
10h 16mDEN-SFO
$91
6/11Sat
1 stopFrontier
8h 58mDEN-SFO
$92
5/24Tue
1 stopMultiple Airlines
13h 24mDEN-SFO
$94
6/8Wed
1 stopFrontier
8h 54mDEN-SFO
$95
6/6Mon
1 stopMultiple Airlines
26h 10mDEN-SFO
$96
6/1Wed
1 stopFrontier
25h 44mDEN-SFO
$97
6/14Tue
1 stopMultiple Airlines
10h 46mDEN-SFO
$98
5/28Sat
1 stopMultiple Airlines
10h 45mDEN-SFO
$100
5/28Sat
2 stopsMultiple Airlines
22h 32mDEN-SFO
$102
6/27Mon
1 stopMultiple Airlines
10h 16mDEN-SFO
$103
8/24Wed
nonstopUnited Airlines
2h 45mDEN-SFO
$109
5/24Tue
1 stopDelta
5h 07mDEN-SFO
$118

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Denver - San Francisco Flights

Departure:

Denver (DEN)United States

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - Denver

Cabin classes:

$717
$890
$643
$103

Browse origins:

$180