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FNL to SAN: distance & flight time
Fort Collins (Northern Colorado Regional Airport) → San Diego (San Diego International Airport)
859 mi
1,383 km · 747 nm
2h 20m
estimated nonstop flight time
-1h
time difference · heading southwest
See live FNL→SAN fares Phone-only fares on this route — call free
Flight time details
859 miles nonstop takes roughly 2h 20m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- FNL — Northern Colorado Regional Airport · Fort Collins, United States
- SAN — San Diego International Airport · San Diego, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near FNL
- DEN · Denver International Airport45 mi away
- GXY · Greeley–Weld County Airport20 mi away
- WBU · Boulder Municipal Airport31 mi away
- BJC · Rocky Mountain Metropolitan Airport38 mi away
Near SAN
Frequently asked questions
How far is FNL from SAN?
The flight distance from Fort Collins (FNL) to San Diego (SAN) is 859 miles (1,383 km, 747 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FNL to SAN?
A nonstop flight takes about 2h 20m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Fort Collins and San Diego?
San Diego is 1 hour behind Fort Collins.
What is the cheapest way to fly from FNL to SAN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FNL–SAN that never appear on search engines, with no booking fees.