$54 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$107
Overall average: $228
Frontier
ו' 5/1ש' 5/2
SFO - DEN • 1 stop
Cheapest non-stop
$107
Typical prices: $141-$310
Frontier
ו' 4/17ב' 4/20
SFO - DEN • Non-stop
Arrival airport
Denver (DEN)
You can't fly directly to Fort Collins. It is served by Denver (DEN), located 54.6 miles from Fort Collins.
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Flight Deals
Useful Info
Flight Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

ו', מאי 1 - ש', מאי 2
Frontier Logo
3:27 pm - 12:19 am
SFO
-
DEN
7h 52m
1 stop
Frontier Logo
9:25 pm - 11:25 pm
DEN
-
SFO
3h 00mnonstop
$107Frontier
ג', מרץ 31 - ד', אפר' 1
Frontier Logo
9:04 pm - 12:37 am
SFO
-
DEN
2h 33mnonstop
Frontier Logo
6:11 pm - 8:05 pm
DEN
-
SFO
2h 54mnonstop
$108Frontier
ג', אפר' 21 - ו', מאי 1
Frontier Logo
8:40 am - 12:30 pm
SFO
-
DEN
2h 50mnonstop
Frontier Logo
7:00 am - 11:11 am
DEN
-
SFO
5h 11m
1 stop
$109Frontier
ד', אפר' 15 - ד', אפר' 22
Frontier Logo
6:00 am - 9:47 am
SFO
-
DEN
2h 47mnonstop
Frontier Logo
1:40 pm - 9:39 pm
DEN
-
SFO
8h 59m
1 stop
$110Frontier
א', אפר' 19 - ש', מאי 2
Frontier Logo
6:00 am - 9:47 am
SFO
-
DEN
2h 47mnonstop
Frontier Logo
9:25 pm - 11:25 pm
DEN
-
SFO
3h 00mnonstop
$111Frontier
ד', אפר' 15 - ד', אוג' 26
Frontier Logo
6:00 am - 9:47 am
SFO
-
DEN
2h 47mnonstop
Frontier Logo
10:29 pm - 12:26 am
DEN
-
SFO
2h 57mnonstop
$112Frontier
ש', מאי 16 - ג', מאי 19
Frontier Logo
6:00 am - 9:42 am
SFO
-
DEN
2h 42mnonstop
Frontier Logo
9:30 pm - 11:25 pm
DEN
-
SFO
2h 55mnonstop
$113Frontier
ש', אפר' 18 - ש', אפר' 25
Frontier Logo
6:00 am - 9:47 am
SFO
-
DEN
2h 47mnonstop
Frontier Logo
10:29 pm - 10:50 am
DEN
-
SFO
13h 21m
1 stop
$114Frontier
ה', אפר' 16 - א', אפר' 26
Frontier Logo
11:56 am - 3:47 pm
SFO
-
DEN
2h 51mnonstop
Frontier Logo
10:29 pm - 12:27 am
DEN
-
SFO
2h 58mnonstop
$115Frontier
ו', מאי 1 - ד', מאי 6
Frontier Logo
11:56 am - 3:47 pm
SFO
-
DEN
2h 51mnonstop
Frontier Logo
9:30 pm - 11:25 pm
DEN
-
SFO
2h 55mnonstop
$116Frontier
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$54
Most popular time to fly with an average 11% increase in price.
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?

    60 direct flights run between San Francisco and Fort Collins on a daily basis. On average, there are about 421 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 Sundays if you are looking for the best rates. For your return to San Francisco, you’ll find the best rates on Fridays 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 Allegiant Air for $42. Frontier offered a round-trip connection from $75 and Allegiant Air from $87.

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 53 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 November, December and January. The cheapest month to fly is March.

Reviews of the 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 4305 reviews
8.1Boarding
7.5Entertainment
8.6Crew
7.0Food
8.0Comfort
Airline reviews

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

4.0 OkayEmma, Mar 2026
LAX - PHX
Read more Southwest reviews

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

The charges were ridiculous for an hour flight and the turbulence was very scary.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

I appreciate the staff who allowed me to board though I arrived a little late! Regarding the assigned seating, I had booked my flight before this change and wasn't aware of the change at the time, and so I didn't select a seat at booking as I didn't realize it was relevant. Better communication about the change would have been helpful for preparing.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

Great flight but super high price. Glad it was a business trip and not personal

3 hour delay. Had to change plans and was still delayed.

We got exit row seats both flights. Everything was running on time

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

it was a very short flight so my expectations were low.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

The flight crew where really good. Better then the crew from BNE to SFO

left on time, reasonable boarding process arrived early luggage came out quickly

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

Older aircraft, no meal, only food was for purchase. Not impressed United.

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

My seat was assigned last row behind restrooms No legroom’s I’m very Pettit Still was not comfortable Food choice was excellent

The worst Airline ever. They centered my second flight and leave me in NY. They don’t have any representatives at the airport and they don’t respond to calls. Basically I got stuck. I will never purchase through there again.

The chicken wrap was tiny ($13 for what looked like a 1/3 of a normal wrap?) and disgusting.

Mediocre would be best description. Food bland. Seat biz class uncomfortable to sleep. Crew never dimmed lights completely in an overnight flight to Europe. Would avoid AA if possible.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

Experience was great. The best part is the free Wi-Fi connection which helps me to work on the flight

The flight was fine. It's the satellite terminal that supports American eagle flights is what sucks. There is only one food option and everything there is way overpriced. I mean I know it's airport pricing, but it's even crazier than that. I bought a sandwich in a plastic container for $18.

The flight was really crowded. Flight attendants were just ok.

Flight was delayed for 2 hours, then last minute the change to on time. The satélite location is far and a nightmare to get to.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

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

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