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IDA to FNL: distance & flight time
Idaho Falls (Idaho Falls Regional Airport) → Fort Collins (Northern Colorado Regional Airport)
420 mi
675 km · 365 nm
1h 23m
estimated nonstop flight time
Same time
time difference · heading southeast
See live IDA→FNL fares Phone-only fares on this route — call free
Flight time details
420 miles nonstop takes roughly 1h 23m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- IDA — Idaho Falls Regional Airport · Idaho Falls, United States
- FNL — Northern Colorado Regional Airport · Fort Collins, 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 IDA
- PIH · Pocatello Regional Airport49 mi away
- JAC · Jackson Hole Airport67 mi away
- WYS · Yellowstone Airport94 mi away
- BYI · Burley Municipal Airport109 mi away
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
Frequently asked questions
How far is IDA from FNL?
The flight distance from Idaho Falls (IDA) to Fort Collins (FNL) is 420 miles (675 km, 365 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IDA to FNL?
A nonstop flight takes about 1h 23m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from IDA to FNL?
Nonstop service on IDA–FNL depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 23m nonstop estimate.
What is the cheapest way to fly from IDA to FNL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IDA–FNL that never appear on search engines, with no booking fees.
Why are some IDA to FNL fares phone-only?
Consolidator contracts let us sell certain IDA–FNL tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.