SFO - DEN

Find cheap flights from San Francisco to Denver

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

SFO — DEN
Dec 2 — Dec 91
Round-trip
1 adult
Economy
0 bags
From?
To?
Fri 12/2
Fri 12/9

Let KAYAK do the searching

Save 22% or more

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

We’re completely free to use – no hidden charges or fees.

Filter by cabin class, free Wi-Fi and more

Bundle your flight + hotel and save

Good to know

Low season

January

High season

June

Cheapest flight

$27

Average price round-trip

$236

Good deal round-trip

$143

Good deal one-way

$119
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from San Francisco to Denver Intl
(avg. price over the last 2 weeks)
or less
or less

When to book flights from San Francisco to Denver Intl

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

Top tips for finding a cheap flight from SFO to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $119 or less one-way and $143 or less round-trip.
  • The cheapest flight from San Francisco to Denver was found 31 days before departure, on average.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is January.
  • Morning departure is around 10% more expensive than an evening flight, on average*.
  • 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.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking flights from San Francisco to Denver

Top airlines flying San Francisco to Denver Intl

Scores according to KAYAK customer reviews
7.0
United AirlinesOverall score based on 70629 reviews
7.4Boarding
7.0Comfort
7.7Crew
6.6Entertainment
6.5Food
Airline reviews

It was rush

Read more about United Airlines

It was rush

Prefer entertainment on seats vs phone.

Cons: "3 delays that caused a missed connection and overnight layover."
Pros: "Flight was packed in like sardines. Seat was uncomfortable"
Cons: "Have passengers sir at every other seat."
Pros: "Everything"
Cons: "Smelled like pee for half time we were up and announcer was very annoying , she sounded like she is about to pass out , short of breath like she needs an ambulance. Statement about wearing masks was just too much... we get it - we wear masks."
Pros: "The crew was friendly and helpful."
Cons: "We were told at the gate that we would be able to purchase food on the plane, but it wasn’t the case."
Pros: "Very organized and helpful. I felt safe."
Cons: "Different types of snack. Nothing serious to complain about."
Cons: "Really tired of delays. Got to the airport, notified of a 90 minute delay. Then got delayed again after we were supposed to board... Like I didn't know it was delayed again. Then got delayed 1 last time before leaving. Delays happen, I get it, just be slightly more accurate and upfront"
Pros: "Great flight"
Cons: "Nothing"
Pros: "A quick flight between the two cities."
Cons: "After we all boarded the plane, there was an issue to be resolved. This meant we were stuck on the plane, mostly in our seats, for an hour before we took off. This meant there were numerous people on our flight who either missed or had to run to their next flights."
Pros: "The crew was wonderful"
Cons: "My flight was severely delayed."
Cons: "Our plane was 2 hours late from San Francisco and we missed our flight to Columbia."
Cons: "Entertainment on the app became unavailable mid flight!"
Pros: "Smooth flight all the way through"
Cons: "United didn't have their act together in Denver. Waiting on the tarmac for the gate to be disoccupied, 40 minutes and counting. When the entire terminal B is United, you'd think they'd have an open gate that can be used for a 757..."
Pros: "It was incredible to get my flight moved up so my layover was much shorter."
Cons: "Flight delayed over an hour. Connecting flight was held but luggage was left behind and had to be retrieved late the next night."
Pros: "Staff was nice!"
Cons: "I didn't like the luggage restrictions associated with our tickets."
Pros: "Crew was nice."
Cons: "The seats and leg room is way to small and crowded."
Cons: "Seats to small. But I am 6'3"" and my son traveling with me is 6'5"."
Cons: "Flight delayed for 50 minutes, then again for 30 minutes, then again for 20 minutes, etc..."
Pros: "Nothing"
Cons: "There seemed to be no planning for this flight. 1. The boarding area was way too small for the number of passengers, causing a major blockage of the moving-walkway-exit in the area. 2. We didn't start boarding until the time the flight was scheduled to take off. 3. After boarding, it took FOREVER for catering to be loaded. They seemed to do it door-by-door rather than loading all sections of the plane at the same time. Why was this not done during the boarding delay. 4. After catering was finally done, and we were ready to push back, the Captain announced that they weren't sure if they put a cargo container in the right location on the place, so had to check that....another 20-minutes of delay. I experienced lengthy delays on both ends of this travel - both by United. I will most certainly look at alternatives for my next flight."
Pros: "- Early morning (5.20 AM) flight - everything went smoothly."
Pros: "Left on time, easy flight, fine weather, no problems!"
Pros: "on time"
Pros: "No incidents, functional, homogeneous, pleasant crew"
Cons: "Thank you for flying with us- Missing sincerity And service!"
Pros: "Our learned expectations are so low it's hard to be disappointed"
Cons: "General indifference"
Cons: "It was super cold. Miserable."
Pros: "On time departure, early arrival. Efficient and courteous service, organized boarding process"
Cons: "Wifi could be cheaper!"
Cons: "They flight left an hour and thirty minutes late so I missed my connecting flight now I'm stuck in the airport overnight NEVER FLYING UNITED AGAIN"
Pros: "No issues with getting a seat or checking in like the cheap airlines."
Cons: "Same flight as the cheap airlines. New seats are not comfortable. Row 30 was brutal at 6'1". I'd rather deal with a shitty airline."
Pros: "Got to destination safely"
Cons: "Don't fit in the seats at all I am 6'7" tall Person in front can't recline And I don't fit at all"
Cons: "It doesn't make sense to book two tickets together and end up sitting in two middle seats in different rows."
Pros: "Easy & no glitches. Luggage arrived"
Pros: "Everything and everyone was great with United Airlines. The flights were on time.. thanks"
Cons: "N/A"
Pros: "Crew was nice and friendly"
Cons: "Wish they had TV"
Pros: "Liked United wifi and being able to watch movies to pass the time."
Cons: "Perhaps look at getting music added to United wifi"
Pros: "The gate attendant and flight crew (attendants) were nice."
Cons: "The plane had a delayed takeoff due to "mechanical difficulties". During the flight, the plane experienced VERY BAD turbulence which scared a lot the passengers. Instead of the captain coming online to assure everyone that all will be well, he maintained silence which worried a lot of passengers. I can imagine that this was traumatic for first-time flyers and children."
Pros: "It was great"
Cons: "Service was horrible."
Pros: "Landed on time."
Cons: "Cramped seats."
Pros: "Entertainment"
Pros: "Why's is there to like!!!?"
Cons: "No blanket.. No pllow"
Pros: "The fact that everything went as planned with no delays."
Cons: "Nothing"
Pros: "Efficiency. We left the gate early and arrived even earlier. Seats were comfortable enough for me to fall asleep in, enough legroom too."
Cons: "Maybe I missed it, but a little sign on every seat said there was a power outlet between the seat, but I didn't see one."
Pros: "Overall behavior of the officials and creed of the UA."
Cons: "Repeated supply of same nature of refreshments in all connecting flights."
Pros: "First class male flight attendant was AWESOME!"
Pros: "It was on time"
Pros: "nothing"
Cons: "united was very rude to me. they charged me twice for the same ticket and never refunded me that money."
Pros: "Seats fit for midgets"
Pros: "Cheap price but you definitely pay elsewhere. Watch out for extra charges for bags, seats, and beverages. Nice staff."
Cons: "Delayed flights to and from my destination and during lay overs. When I approached staff about my connecting flight I was told I would make it. Our plane taxied into the gate my connecting flight was docked at. We waited in the plane so my connecting flight could take off. In turn I wasn't pushed to a flight 5 hours later. I left my accommodations at 6:15AM. Due to layovers and delays I will not be home until 11:15PM. Also planes required "maintenance" each time and still had no running water and jammed overhead compartments."
Pros: "The flight was on time."
Cons: "Three dollar glass of soda...please!"
Cons: "Unexplained delay is not ok."
Pros: "Great staff, courteous and helpful"
Cons: "No complementary drinks, no carry-on allowed"
Pros: "I really appreciated that a supervisor credited me a full refund after I discovered mid-day before my 6:30 p.m. Sunday flight that the Frontier flight had been delayed, for no apparent reason, by nearly 4 hours, which would have gotten me into Denver at 1:45 a.m. Not acceptable, so I changed to a United flight, but the customer representative initially told me I could not get a refund (only a credit), but then the supervisor that I asked to speak with agreed to give me a full refund, and he was very polite and accommodating. I did appreciate that. Thank you."
Cons: "For no apparent reason, certainly not weather related, Frontier delayed their San Francisco to Denver flight nearly 4 hours, which would have gotten me into Denver at 1:45 a.m. This was unacceptable, so I switched to United, and it was much better and I got to Denver at the time Frontier was originally supposed to land. Thank you."
Pros: "Nothing"
Cons: "Flight from SFO to DEN was delayed. At check in i expressed concern about missing connecting DEN to PHL red eye (9min window) and was reassured that I "will make the flight." The flight arrived in Denver later than anticipated and the connecting red eye to PHL departed 5mins prior to landing. I was then placed on the next available flight- 5/29 at 6:55pm with arrival to PHL on 5/30 at 1am. No accomandations, re-routing options were given. I then attempted to file a complaint with the airline customer service number twice but both times no complaint was filed. The customer service rep promised to put me on an earlier flight to Trenton and refund my ticket. So I sat on the floor of the airport until ticketing opened at 4am where I was informed that no complaints were filed, I would not be refunded and the Trenton flight was not available. Also requests to retrieve my bag were ignored at the gate. I would have to spend the next 4 hours trying to locate it. I had to be in PHL today for work. I purchased a ticket on southwest."
Pros: "Fast boarding. The crew were friendly, and clearly a lot of regular commuters and travelers were on this route. More like a local bus ride. The energy was positive and the process efficient."
Cons: "My seatbelt was damaged and old. The belt was twisted, the tension clamp did not work, and the stitching on the air bag sleeve ( I was in the 1st row) was coming out. The plane had a lot of interior pieces missing, trim pieces falling of, little holes etc. I realize that this doesn't impact the over all mechanical safety - yet if they can't even replace a seat belt or fix a piece of trim how do I know that the engines and flight computers are in good shape ? I am a product developer, marketer, and also a motorcycle rider. So I understand the stats, still I don't want a janky plane ride with broken pieces."
Pros: "Price, overall experience this trip"
Cons: "All the extra charges, uncomfortable non recline seats, no entertainment, food service"
Cons: "I checked in early online the night before my flight only to stand in line for 45-55 minutes to drop off my bag. They also didn't have anyone working the counters until about an hour and a half before my flight departure time. Myself and about 100 others were standing in line for about 20 minutes before anyone showed up to help us check in or take our bags. I was charged a seat fee for both of my flights ( I purchased a round trip ticket) I'm pretty sure that should have been included in my initial ticket purchase. To have a carry on requires an additional fee that is more expensive than it is to check a bag. The website said these charges were to give us the best ticket prices however with all the additional fees it was significantly more expensive than their competitors. I will not fly with Frontier again."
Pros: "I really enjoyed the camaraderie i shared with my fellow passengers. Adversity really brings people together."
Cons: "Frontier as a whole, I was unaware, is a 'not good' airline. Smallest seats I've yet experienced, no recline, no legroom. If you don't want to pay $35 to check a bag, it's cool they understand, they'll happily take $40 to let you carry a bag on. Well, not happily. More begrudgingly than happily. Customer service was poor, bordering on hostile from one sky waitress in particular. It's hard to blame the airline's employees for their poor attitude, as I would be disheartened and upset if I was surrounded by a plane-full of customers vowing to 'never fly frontier again'"
Cons: "Flight delayed 4.5 hours. A total waste of time and money."
Pros: "Nothing -a nightmare trip - delayed 6 hrs in Dia -also waited 2hrs for wheelchair-dirty airplane -diaper under seat & crumbs not cleaned after paying for seat, luggage, food even water,( none of which was mentioned in booking) tips, taxi(no buses to late) cost me over $200 no service on airline. Midnite when arrived SF so no buses to Petaluma so more $ to get there At 81 yrs old I do not like to see such poor mgt No pilots, no crew, no info- was sent to 8 gates from 4 to 10 o"clock no wheelchair- I was at airport at noon- and did not see a bed until 2:30 in morning Have never had treatment like this in my life time and I have gone via Frontier many times to Minot ND HNY Ferne Axelsen"
Pros: "Literally nothing. Absolutely a hellish, terrible nightmare experience in every way."
Cons: "- Frontier literally just threw everyone's bags from over 10 different flights in a giant mess all over the airport. And then was extremely rude to their customers about it. I can't even make this up. - Frontier unloaded bags from multiple flights on the same baggage claim section, and would only partially load certain flights. For instance, they only loaded 1/2 of the bags from my San Francisco flight, and I had to wait a whole day to get my bag bag in a giant mess of bags. - People had been waiting in line for literally 4 hours to talk to someone and when I finally got to the customer service desk she was making small talk and giggling and told me to go to the back of the line and said "well you can keep on waiting" when I said maybe she should have more of a sense of urgency for these poor travelers stuck in the airport literally all day and night. This was also the person in charge of the bags - a catch employee! - They told me they would give me a refund for my cancelled flight and refused to give me a receipt for my refund. They said "we don't give receipts." - Seats were extremely tiny and uncomfortable. - When we landed at the gate we had to stay on our plane for over 1.5 HOURS just waiting to get off because there wasn't a gate available. - They made no effort to reschedule me after my flight was cancelled."
Cons: "turbulence, drunk people, sat on the runway x1hr"
Cons: "Seats not reclining, not very comfortable. To be told I had to Pay for my tiny bag to check instead of taking on plane. If I took it to the gate it would cost 60 to check at gate. Then to only be offered free water on the flight when I paid a lot for my one way flight. It seemed like a slap in the face to be told frontier is growing so fast and opening in new cities with 120 planes ordered, but they can't offer you a free juice and maybe some pretzels. I always liked frontier mainly because they were based out of Denver, but it feels like money is the only driving factor now. I fly a lot but doubt I'll fly frontier again."
Cons: "Frontier made it very clear that it does not value its customers. I arrived a whopping 3.5 hours early to my flight from San Fransisco to Denver. I proceeded through security and my online boarding pass wouldn't scan. I was sent back to the check-in desk where I was met with 4 non-operating kiosks, a vacant check-in counter, and a sign saying they would re-open 2 hours later. What! I was soon joined by many many others who were sent back from security for the same reason. Some people had printout boarding passes that wouldn't scan at security! This was all on a Sunday afternoon, busy busy time for travel. Other complaints that severely impacted my travel experience: 1) Did not send me a flight reminder email or a boarding pass confirmation email. 2) At online check-in, Frontier charged me for my seat. The seat I already paid for! Frontier would not issue my boarding pass until I paid for my seat. That I already paid for. 3) Frontier charged me $30 for my carry-on. Get a clue Frontier! 4) The seats did not have headrests and the legroom was the smallest ever! I don't know how adult-sized people fly Frontier comfortably. 5) Frontier charges for snacks and drinks on the plane. Nothing is complimentary. Again, get a clue Frontier! I will never fly Frontier again."
Cons: "The single worst flight or airline I've ever experienced."
Pros: "The was the only thing good."
Cons: "I will never fly frontier again"
Pros: "Not the strangers sleeping in my armpits."
Cons: "The worst part was we landed at 9:30 and did not get our checked bags until 11:30! We stood around for 2 hours!!!!! They said they were already 45 minutes behind to start with. How do you get that behind? You have to pay for everything, including coffee and water. We paid to check our bags at $25 online because they charge $30 for carry on. After waiting two hours for our checked bags, I sure wish I would have splurged on that $5.00! Even though we bought two tickets, to sit together we would have had to pay more, so I got the nightmare of a girl asleep in my armpit on one side and another guy on other side snoring and legs spread out across my chair. Virgin was only $40 more, would have been worth it in end!"
Pros: "I appreciated the airline crew and staff explaining the real reasons that our flight, which could have left on time, ended up leaving 90 minutes late"
Cons: "Frontier has essentially lost their ground crew in Denver because their new owners, a holding company, is engaging in "cost-cutting measures" that has decimated staffing and morale"
Pros: "price on-time arrival"
Cons: "seats not very comfortable"
Pros: "Quick efficient"
Cons: "Legroom"
Pros: "Nothing."
Cons: "This is NOT a discount airline. Everything is a hidden charge. The seats are uncomfortable."
Pros: "Best price but you get what you pay gor"
Cons: "Very cramped, boarding delay, no free refreshments"
Pros: "Value for money. Very comfortable as compared to other low-cost airlines."
Cons: "They were late in my returning flight but it happens. Nothing much to complain."
Pros: "Absolutely nothing to like about frontier. You get worse than you pay for with frontier."
Pros: "I arrived alive, but that's about it."
Cons: "Over an hour delay in leaving SFO due to poor management (the passengers deplaning from our plane had been kept on the Tarmac for 2 hours before being release b/c Frontier could not find a gate for them). Then a 2 hr 20" flight took 20" longer. To add insult to injury, we were ot offered so much as a glass of water but would be allowed to purchase one. There was a lengthy delay deplaning as we allowed the passengers with connecting flights (half the plane) to deplane first. The we waited over an hour to claim our baggage, after the carousel was changed 3 times. I will not fly Frontier again!"
Pros: "Nothing"
Cons: "Delays, late bags, poor service"
Pros: "It's really hard to find anything positive to say."
Cons: "Checking, lack of communication during delays, rude crew members, getting yelled at for not sitting while another plane is obviously docked at the gate we are suppose to pull into for an hour. Everything just really sucked not work the price you end up paying with your time, add ons and convenience not worth it."
Cons: "That I didn't actually fly home"
Cons: "Frontier charges for everything. At check-in the attendant told me I could either bring my bag on the flight for $45 or check it for $40. I wish I knew all this before booking my ticket. I would've just paid extra for a different airline. At least I would've had better service. Every Feontier employee I came into contact with was either jaded or grumpy, as if hey hated their jobs, which made the experience even worse. All of my flights were delayed for whatever reason, and dealing with the staff made the experience that much worse. Most of them were so rude!"
Cons: "Sat on the plane an hour after we landed."
Pros: "Great pilot, the plane hit some sever turbulence as we approached Denver International airport. I wasn't concerned since this was a new aircraft but if it was an older one it would have sustained structural damage. The pilot aborted the landing and flew over Denver and came in from a different direction. Everyone on the plane cheered when the pilot landed the plane safely."
Cons: "I was charged a fee to select a seat, not one with more leg room just any seat. Also, I was charged $40. for just one carry on. In addition on this new AIRBUS 320 the seats are so close together in the rows that they should issue a warning that if you are taller than 6 ft. 3 in. you won't be able to sit in the seat because your knees will be in contact with the seat in front of you. I'm 6 ft. 4 in. so luckily this was only a 2 hour flight. I also choose an aisle seat so I could put my feet in the aisle."
Cons: "We were left on the tarmac for 100 minutes after landing. Given No information; not allowed to get up for the bathroom. Terrible."
Pros: "The competence of the on board personnel."
Cons: "The lack of communication with passengers at the gate."
Pros: "I made it alive"
Cons: "Everything else. We left late (couple hours), the attendents said looking like a 7:15 departure... No update...8:10 departure, ran out of the snack items we wanted, no wifi, uncomfortable chair, no entertainment, arrived but then sat on Tarmac, again attendent said just a few minutes but 25 later we moved to gate just to wait for the crew that wasn't there yet. Seemed really super unorganized and would have been better if they just told us straight up how long it was going to take. Cost me a whole bunch of money. I would have just flown the next day and skipped a night at a hotel, a car rental, taxis and we were so late we didn't even get to eat before bed. Absolutely the worst flight ever. Hard to believe since it is only two hours and I travel a lot! Won't be traveling Frontier again."
Cons: "Told at the checkin desk it's $35 per person to "confirm our seats" -- two in the exit row as all that remained. Why? I paid $250 per person to confirm I wanted on the aircraft. I showed up 1.5 hours early to check in. Also told at the desk it's $40 per checked bag ($45 per carry on!). So when I get to the airport I'm forced to pay $150 more, just to fly to my destination. Credit card only. The lady checking in next to me paid me cash so I'd help her pay her extra fees. Not how to treat your customers. That's what I call a scam. If all this was in the small print, I missed it, and it was tough to find, having booked through Kayak. Won't be duped again. Goodbye, Frontier."
Cons: "The seats are absolutely terrible."
Pros: "Boarding was quick"
Cons: "Nothing"
Pros: "The crew was helpful and couteous"
Cons: "Seats were uncomfortable and not much space to stretch out comfortably. The flight was a little late but didn't effect my schedule"
Pros: "Nothing."
Cons: "Horridly uncomfortable seats (even though we paid extra for them!!!) everything on this airline costs money. seats, water, coffee, snacks, your comfort, your soul. Never fly it again."
Pros: "Didn't like the "bait and switch " tactics Feontier does. Having to pay for a seat assignment and for brining a bag was ridiculous. The total cost of round trip seat assignment and bag charges was $122.00!!! This add-on was never mentioned in the price shown on Kayak's site. This add-on was an extra 31% of the "advertised" price shown on Kayak! This important information should have been mentioned on the comparative quote given so a more realistic price comparison decision could be made. I won't be using Frontier again."
Cons: "Not family friendly, too many upcharges, terrible plane, food, seats, hot, dry, expensive"
Pros: "Price"
Cons: "That i have to pay for my carry on bag!!! Reslly???"
Cons: "Baggage prices was not clear... I feel that it needs to be stated clearly that carry on luggage is to be paid for at departure..."
Pros: "Low price"
Cons: "Could not buy sandwich on plane. I was hungry all day."
Cons: "I have been in the airport for 8 hours. I am still waiting for the flight to board."
Pros: "the plain didn't crash when landing, barely"
Cons: "the entire experience"
Cons: "Your check in on line is too confusing. Too much advertising mixed in with the check in process. Your food and beverage service SUCKS. No snacks or drinks unless you pay. Prices are rediculas for a drink. One little bag of peanuts or crackers and a soda is not too much to ask. We already pay too much for the ticket and luggage fees now we have to pay for a snack and drink. This may be my last frontier flight. And when are you going to get a better boarding system so I don't have to crawl across two people to get to my seat??"
Cons: "extra fees for everything!!"

Book cheap flights from San Francisco to Denver

Recent round-trip flight & train deals

1/20Fri
nonstopFrontier
2h 40mSFO-DEN
1/23Mon
nonstopFrontier
2h 56mDEN-SFO
$60
2/9Thu
nonstopFrontier
2h 40mSFO-DEN
2/12Sun
nonstopFrontier
3h 01mDEN-SFO
$61
1/27Fri
nonstopFrontier
2h 40mSFO-DEN
1/29Sun
nonstopFrontier
2h 56mDEN-SFO
$68
12/13Tue
nonstopFrontier
2h 35mSFO-DEN
12/19Mon
nonstopFrontier
2h 58mDEN-SFO
$70
12/14Wed
nonstopFrontier
2h 36mSFO-DEN
12/20Tue
nonstopFrontier
2h 58mDEN-SFO
$73
12/13Tue
nonstopFrontier
2h 36mSFO-DEN
12/19Mon
nonstopFrontier
2h 58mDEN-SFO
$75
12/13Tue
nonstopFrontier
2h 36mSFO-DEN
12/15Thu
nonstopFrontier
2h 56mDEN-SFO
$78
1/17Tue
nonstopFrontier
2h 40mSFO-DEN
1/21Sat
nonstopFrontier
3h 00mDEN-SFO
$80
2/2Thu
nonstopFrontier
2h 40mSFO-DEN
2/7Tue
nonstopFrontier
3h 01mDEN-SFO
$81
12/12Mon
nonstopFrontier
2h 36mSFO-DEN
12/13Tue
nonstopFrontier
2h 58mDEN-SFO
$82
1/12Thu
nonstopAmtrak
32h 28m9MY-EN8
1/17Tue
nonstopAmtrak
33h 05mEN8-9MY
$236
1/12Thu
nonstopAmtrak
32h 28m9MY-EN8
1/16Mon
nonstopAmtrak
33h 05mEN8-9MY
$236
3/6Mon
nonstopAmtrak
32h 28m9MY-EN8
3/12Sun
nonstopAmtrak
33h 05mEN8-9MY
$236
1/14Sat
nonstopAmtrak
32h 28m9MY-EN8
1/16Mon
nonstopAmtrak
33h 05mEN8-9MY
$236
1/8Sun
nonstopAmtrak
32h 28m9MY-EN8
1/12Thu
nonstopAmtrak
33h 05mEN8-9MY
$236
1/20Fri
nonstopAmtrak
32h 28m9MY-EN8
1/22Sun
nonstopAmtrak
33h 05mEN8-9MY
$236
1/14Sat
nonstopAmtrak
32h 28m9MY-EN8
1/17Tue
nonstopAmtrak
33h 05mEN8-9MY
$236
1/13Fri
nonstopAmtrak
32h 28m9MY-EN8
1/17Tue
nonstopAmtrak
33h 05mEN8-9MY
$236
1/13Fri
nonstopAmtrak
32h 28m9MY-EN8
1/16Mon
nonstopAmtrak
33h 05mEN8-9MY
$236
1/19Thu
nonstopAmtrak
32h 28m9MY-EN8
1/25Wed
nonstopAmtrak
33h 05mEN8-9MY
$236

Search by stops

Search by airline

Search by train company

Search by price

Recent one-way flight & train deals

2/2Thu
nonstopFrontier
2h 40mSFO-DEN
$27
1/23Mon
nonstopFrontier
2h 40mSFO-DEN
$30
12/14Wed
nonstopFrontier
2h 35mSFO-DEN
$31
12/14Wed
nonstopFrontier
2h 36mSFO-DEN
$34
12/14Wed
nonstopFrontier
2h 36mSFO-DEN
$39
12/6Tue
nonstopFrontier
2h 35mSFO-DEN
$40
1/30Mon
nonstopFrontier
2h 40mSFO-DEN
$41
12/12Mon
nonstopFrontier
2h 36mSFO-DEN
$42
1/10Tue
1 stopFrontier
9h 42mSFO-DEN
$44
1/31Tue
1 stopFrontier
9h 42mSFO-DEN
$45
3/1Wed
nonstopAmtrak
32h 28m9MY-EN8
$118
2/18Sat
nonstopAmtrak
32h 28m9MY-EN8
$118
6/11Sun
nonstopAmtrak
32h 28m9MY-EN8
$118
12/6Tue
nonstopAmtrak
32h 28m9MY-EN8
$118
1/14Sat
nonstopAmtrak
32h 28m9MY-EN8
$118
1/12Thu
nonstopAmtrak
32h 28m9MY-EN8
$118
1/11Wed
nonstopAmtrak
32h 28m9MY-EN8
$118
2/16Thu
nonstopAmtrak
32h 28m9MY-EN8
$118
1/20Fri
nonstopAmtrak
32h 28m9MY-EN8
$118
3/1Wed
nonstopAmtrak
32h 28m9MY-EN8
$118

Search by stops

Search by airline

Search by train company

Search by price

San Francisco - Denver Flights

Departure:

San Francisco (SFO)United States

Destination:

Denver (DEN)United States

Return flight deals:

Denver - San Francisco

Cabin classes:

$860
$815
$377
$79

Browse destinations:

Compare transportation modes for San Francisco to Denver

Average priceAverage duration
Flights$4862h 35m
Trains$2360h 00m