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$48+ Cheap flights from San Diego (SAN) to Fort Collins, CO

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DEN
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from San Diego to Fort Collins are usually found in April or January, booked 71 days in advance, depart on a Saturday or Friday and return on a Saturday

Cheap flight deals from San Diego to Fort Collins

Keep the following information in mind while searching for San Diego to Fort Collins flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$75
(Kiwi.com)

One-way from

$48
(Cheapflightsfares)

Popular in

December

Cheapest in

April

Average price

$170
Provider with most accurate pricing for San Diego-Denver Intl flight deals.
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From San Diego to Fort Collins
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One-way flight from San Diego to Fort Collins
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Highest demand for flights based on searches. 9% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from San Diego to Fort Collins

Cheapest flights from San Diego to Fort Collins
Explore the most affordable flight options available from San Diego to Fort Collins. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/316:25 amSAN - DEN
Nonstop2h 31mFrontier
Wed 4/910:43 pmDEN - SAN
Nonstop2h 31mFrontier
Deal found 2/19$75
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/146:25 amSAN - DEN
Nonstop2h 31mMultiple Airlines
Sun 3/166:15 amDEN - SAN
Nonstop2h 22mMultiple Airlines
Deal found 2/20$127
This Southwest deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/35:30 pmSAN - DEN
1 stop4h 35mSouthwest
Mon 4/77:10 amDEN - SAN
1 stop4h 35mSouthwest
Deal found 2/20$212
This Hawaiian Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/187:00 amSAN - DEN
1 stop8h 12mHawaiian Airlines
Tue 3/257:00 amDEN - SAN
1 stop8h 21mHawaiian Airlines
Deal found 2/20$226
This SmartFares deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/136:15 amSAN - DEN
1 stop6h 39mAlaska Airlines
Mon 3/172:50 pmDEN - SAN
1 stop6h 45mAlaska Airlines
Deal found 2/19$237
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/181:30 pmSAN - DEN
1 stop4h 49mDelta
Mon 3/246:55 amDEN - SAN
1 stop4h 20mDelta
Deal found 2/20$259

Find flights from San Diego to Fort Collins within your budget

Customize your flight search to find flights from San Diego to Fort Collins that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

San Diego

Fly to

Fort Collins

Route

Depart

Return

Price

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Mon 3/31

6:25 am-9:56 am

Nonstop2h 31m

Denver Intl

Wed 4/9

10:43 pm-12:14 am

Nonstop2h 31m

$75

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Fri 3/14

6:25 am-9:56 am

Nonstop2h 31m

Denver Intl

Sun 3/16

6:15 am-7:37 am

Nonstop2h 22m

$127

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Thu 4/3

5:30 pm-11:05 pm

1 stop4h 35m

Denver Intl

Mon 4/7

7:10 am-10:45 am

1 stop4h 35m

$212

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Tue 3/18

7:00 am-4:12 pm

1 stop8h 12m

Denver Intl

Tue 3/25

7:00 am-2:21 pm

1 stop8h 21m

$226

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Thu 3/13

6:15 am-1:54 pm

1 stop6h 39m

Denver Intl

Mon 3/17

2:50 pm-8:35 pm

1 stop6h 45m

$237

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Tue 3/18

1:30 pm-7:19 pm

1 stop4h 49m

Denver Intl

Mon 3/24

6:55 am-10:15 am

1 stop4h 20m

$259

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Fri 3/7

6:25 am-9:56 am

Nonstop2h 31m

$48

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Tue 4/29

5:40 pm-10:45 pm

1 stop4h 05m

$104

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 5/21

1:00 pm-6:19 pm

2 stops28h 19m

$105

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Tue 4/22

10:52 am-9:15 pm

1 stop9h 23m

$108

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 14 results
1
2

Best time to book a flight from San Diego to Fort Collins

Have a flexible travel schedule? Discover the best time to fly to Fort Collins from San Diego with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from San Diego to Fort Collins

Get recent, data-driven insights about flights from San Diego to Fort Collins including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from San Diego to Fort Collins?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Fort Collins. Price data was last updated on February 14, 2025.

Booking 35 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Diego to Fort Collins. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Diego to Fort Collins?

Currently, October is the cheapest month in which you can book a flight from San Diego to Fort Collins (average of $197). Flying from San Diego to Fort Collins in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SAN to FC9?

Find hourly flight availability from San Diego to Fort Collins. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to Fort Collins as you normally would.

What is the cheapest day to fly from San Diego to Fort Collins?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Fort Collins. Price data was last updated on March 31, 2024.

Travelers seeking maximum savings on their San Diego to Fort Collins flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Diego to Fort Collins

Explore weekly flight availability from San Diego to Fort Collins. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 20, 2025.

The most flights from SAN to FC9 are scheduled on a Thursday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Fort Collins by month

Plan your trip to Fort Collins by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Fort Collins ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Fort Collins when rainfall is around 0.5 in.

Temperature in Fort Collins by month

Plan your trip to Fort Collins by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Fort Collins, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Fort Collins

Get insights into the airlines that provide service to Fort Collins. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Fort Collins. Reviews last updated February 20, 2025.
Read through reviews of airlines operating flights from San Diego to Fort Collins, such as Southwest, Alaska Airlines and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Fort Collins. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Diego to Fort Collins?

    San Diego (SAN) is the airport you will fly out of if you book a flight from San Diego to Fort Collins. You should not have trouble finding flights to Fort Collins from San Diego; the airport handles an average of 17 outbound flights to Fort Collins per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the San Diego airport to Fort Collins. It is only a 2.6 mi journey to San Diego (SAN) from San Diego’s city center.

  • How popular is this San Diego to Fort Collins flight route?

    Flights from San Diego to Fort Collins have been viewed 237 times in the past calendar month.

  • What are the cheapest airlines to fly from San Diego to Fort Collins one-way?

    The cheapest airlines for a one-way flight from San Diego to Fort Collins are Frontier ($48), Southwest ($104), and Alaska Airlines ($108).

  • What are the most reliable airlines from San Diego to Fort Collins?

    No one likes to see their flight delayed. When booking a flight from San Diego to Fort Collins consider choosing Copa Airlines (90%), Air Canada (86%) or Frontier (81%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from San Diego to Fort Collins?

    Looking at all options, your cheapest flight can be booked for $55. While the most popular route (San Diego - Denver Intl) can be booked for $88 on average our data indicates $801 when flying from San Diego to Fort Collins.

  • Can I find deals for flights from San Diego to Fort Collins that include hotel bookings?

    Yes. In addition to deals on San Diego to Fort Collins flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Fort Collins?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Fort Collins.

  • Can I find deals for business class flights from San Diego to Fort Collins?

    Yes. Cheapflights offers flight deals from San Diego to Fort Collins by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Diego to Fort Collins?

    Currently, October is the cheapest month in which you can book a flight from San Diego to Fort Collins (average of $197). Flying from San Diego to Fort Collins in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 5 airlines flying from San Diego to Fort Collins

Discover the top 5 airlines that operate flights from San Diego to Fort Collins. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$57Average$145FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$158Average$268FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$163Average$372FlexibilityNo cancel feeOn-time69%
DeltaCheapest$195Average$265FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$231Average$325FlexibilityNo cancel feeOn-time71%
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