Cheap Flights from Fort Collins (FNL) to San Diego (SAN)

Popular airlines from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN)

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Frequently asked questions

How much does a flight from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN) cost?
Get a cheap one-way flight or cheap return flight from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN)?
Traveling in may help you find better deals, as it's the cheapest month for flights between FNL and SAN. You'll typically find the lowest prices during the off-season.
Which airlines fly direct from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN)?
Although Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) has no direct flights to San Diego Intl. Airport (SAN), other airports have nonstop options. Jetting off from Denver Intl. Airport (DEN) will get you to San Diego without any detours.
What is the cheapest airline that flies from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from FNL to SAN. Then, sort your results by "Price (lowest to highest)" to score a great deal.
How many flights per day from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN)?
You'll have to book a flight with a layover if you're traveling from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from FNL to SAN?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on various factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN)?
Choose a flight from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN) that leaves before 3 PM to reduce the risk of cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN) last-minute?
Last-minute bookings from FNL to SAN are usually more expensive. For the lowest prices, start searching for flights well in advance. That being said, if you're flexible with your travel dates, it's possible to score a cheap ticket right before you leave.
Is it cheaper to book a FNL to SAN flight and hotel package?
You'll typically save money by booking a FNL to SAN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've selected your preferred flights and accommodations, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Fort Collins, CO (FNL-Fort Collins-Loveland Municipal) to San Diego Intl. Airport (SAN)?
It's usually possible to reschedule or cancel your FNL to SAN flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Fort Collins-Loveland Municipal
Destination airport
San Diego Intl.
Distance
859 mi

Book with confidence

Book with confidence

Fort Collins to San Diego Flights

The cheapest times to fly from Fort Collins to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Fort Collins to San Diego are during the month of . You can find some of the cheapest flights from Fort Collins to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Fort Collins to San Diego

Sunday is one of the best days to book for cheap flights from Fort Collins to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Fort Collins to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Fort Collins to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Fort Collins to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Fort Collins to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Fort Collins to San Diego Flights

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