$48 Find Cheap Flights from San Francisco to Fort Collins

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Fort Collins departing on 8/7. 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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Cheap Flight Deals from San Francisco to Fort Collins (SFO-DEN)

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

Recent round-trip flight deals from San Francisco to Fort Collins

KAYAK's recommended round-trip deals from the most popular airlines that fly from San Francisco to Fort Collins.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
6:39 pm - 10:23 pmSFO-DEN
2h 44mnonstop
Frontier Logo
10:14 pm - 12:09 amDEN-SFO
2h 55mnonstop
$96Frontier
Find Deal
Fri, May 30 - Sun, Jun 1
Frontier Logo
6:37 am - 10:17 amSFO-DEN
2h 40mnonstop
Frontier Logo
10:29 pm - 12:19 amDEN-SFO
2h 50mnonstop
$97Frontier
Find Deal
Fri, Jul 25 - Mon, Jul 28
Frontier Logo
6:37 am - 10:12 amSFO-DEN
2h 35mnonstop
Frontier Logo
9:36 pm - 11:25 pmDEN-SFO
2h 49mnonstop
$98Frontier
Find Deal
Fri, Jul 4 - Sat, Jul 12
United Airlines Logo
8:45 pm - 12:18 amSFO-DEN
2h 33mnonstop
United Airlines Logo
8:02 am - 9:45 amDEN-SFO
2h 43mnonstop
$197United Airlines
Find Deal
Tue, Jun 10 - Sat, Jun 14
American Airlines Logo
3:23 pm - 9:42 pmSFO-DEN
5h 19m1 stop
American Airlines Logo
2:35 pm - 8:01 pmDEN-SFO
6h 26m1 stop
$208American Airlines
Find Deal
Tue, Jul 1 - Wed, Aug 6
Delta Logo
5:35 am - 11:58 amSFO-DEN
5h 23m1 stop
Delta Logo
7:10 am - 12:12 pmDEN-SFO
6h 02m1 stop
$217Delta
Find Deal
Tue, Jun 10 - Sat, Jun 14
Southwest Logo
7:50 pm - 11:15 pmSFO-DEN
2h 25mnonstop
Southwest Logo
5:20 pm - 11:25 pmDEN-SFO
7h 05m2 stops
$223Southwest
Find Deal
Mon, Jun 30 - Tue, Jul 1
Delta Logo
1:45 pm - 7:30 pmSFO-DEN
4h 45m1 stop
Delta Logo
6:05 am - 9:58 amDEN-SFO
4h 53m1 stop
$237Delta
Find Deal
Wed, Jun 4 - Sun, Jun 8
United Airlines Logo
4:28 pm - 8:08 pmSFO-DEN
2h 40mnonstop
United Airlines Logo
1:30 pm - 3:12 pmDEN-SFO
2h 42mnonstop
$239United Airlines
Find Deal
Sat, Aug 30 - Sun, Aug 31
Southwest Logo
6:30 am - 12:55 pmSFO-DEN
5h 25m1 stop
Southwest Logo
4:35 pm - 10:15 pmDEN-SFO
6h 40m2 stops
$242Southwest
Find Deal
Sat, May 31 - Wed, Jun 4
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Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$48
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from San Francisco to Denver

When to book flights from San Francisco to Fort Collins

Are your dates flexible? Find out the best times to travel from San Francisco to Fort Collins based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

FAQs for booking flights from San Francisco to Fort Collins

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

    When flying out of San Francisco you’ll be using San Francisco. Fort Collins does not have its own airport so you’ll be flying into nearby Denver Intl airport, which is 54.6 mi away.

  • How long does a flight from San Francisco to Fort Collins take?

    Direct flights cover the 964 miles separating San Francisco and Fort Collins in about 2h 25m.

  • How many flights are there between San Francisco and Fort Collins?

    65 direct flights run between San Francisco and Fort Collins on a daily basis. On average, there are about 455 departures each week.

  • What’s the cheapest day of the week to fly between San Francisco and Fort Collins?

    Consider leaving on a Friday and avoid Thursdays if you are looking for the best rates. For your return to San Francisco, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

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

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

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

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

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

    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 Fort Collins with an airline and back to San Francisco with another airline.

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

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

  • Which airlines provide the cheapest flights from San Francisco to Fort Collins?

    In the last 72 hours, the cheapest one-way ticket between San Francisco and Fort Collins found on KAYAK was with Frontier for $48. Frontier offered a round-trip connection from $96 and United Airlines from $197.

Top tips for finding cheap flights from San Francisco to Fort Collins

  • There is no airport in Fort Collins. Instead, you’ll be flying into Denver Airport when flying between San Francisco and Fort Collins.
  • The cheapest flight from San Francisco to Fort Collins was found 24 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 November, December and January. The cheapest month to fly is September.

Top 5 airlines serving San Francisco to Fort Collins

Need help choosing which airline to fly with from San Francisco to Fort Collins? 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 4294 reviews
8.2Boarding
7.6Entertainment
8.0Comfort
7.1Food
8.6Crew
Airline reviews

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

2.0 MediocreAnonymous, Apr 2025MSY - DEN
Read more Southwest reviews

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

WiFi on the flight was not working. Thus, entertainment options were limited.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

Employees were kind and funny, as always! Flight was late but no announcements were made for people with tight connections to help them transition quickly. No service due to turbulence.

I recently flew Southwest from San Jose to Honolulu. I was very impressed with the flight crew, especially the flight attendant in charge of the front of the plane. She came through the aisle at least five times for drinks and water, and two times for snacks. I have not seen such service since I flew first class. Also, for the first time, they gave us the correct baggage claim number, and the luggage came out quickly. I can't wait for Southwest to have assigned seating! I absolutely hate the Cattle Call boarding procedure and the mad dash to get seats and overhead bins. However, the boarding was efficient.

For the first time in a long time we had a flawless experience with Southwest. Both flights were early and no mechanical errors at all. We were shocked and pleasantly surprised 😮.

Delta flight was on time, seats were comfortable, and crew was nice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

Airline lost my luggage and set me back a day worth of travel due to having to stay in Denver to wait on my luggage

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

Compared with other carriers business class for an overnight was not worth the extra expense.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

AWFUL. I have had the experience of traveling with many airlines across the world, and hands down United Airlines is the worst. Not one flight was on time, and I don’t think I met one crew member or staff member who wasn’t rude.

For an 8.5 hour flight the service on board lacked a bit. Service start was slow, the food was worse than usual and they skipped the snack they were supposed to deliver before landing.

Wish movie and music choices changed more often. Mostly same from a month or two ago when I last flew.

It was good. Just that the seats could not be reclined. The people behind were not ready to let the chairs be reclined

Checkin was painful and slow! Lady didn’t seem to know what was going on and couldn’t explain the delay. Seemed ahe couldnt see the computer scree and we couldn’t hear her talk through her mask.

Plane left & arrived early- 5 Crew great. Wi fi - paid for 2, only 1 worked - so so. Waste of $. Coolie was good

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

British Airways staff are very polite and willing to help.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

One of the best flights I’ve had. So smooth.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

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

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

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

No frills for sure. No gate announcements about flight delay, not even water to drink on the flight.

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

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

It was a redeye flight, so every passenger just wanted to sleep, but through the entire flight, the flight crew made announcements over the loudspeaker at maximum volume every few minutes making sleep impossible. For example: it’s 2am, and the crew decides to give an extremely detailed announcement about snacks and beverages for sale. And 3am is the perfect time to wake up everyone with a lengthy announcement about how to get a coffee refill and how to take advantage of new offer from frontier for a credit card.

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

While booking it was not obvious that I had to pay for carryon. Realized it only during check-in. Overall, meh!

Stop changing gates at sfo. When you are elderly going back for it’s not fun.

Everything you need to know for your flight from San Francisco to Fort Collins

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