Is Frontier Airlines reliable?
Ranked 54 of 74 US airlines on on-time record.
19,104 flights · February 2026 – July 2026 · US Bureau of Transportation Statistics
71.32%
Arrived on time
Within 15 minutes of schedule
2%
Cancelled
Share of scheduled flights
84 min
When late, late by
Average across delayed arrivals
75.47%
Delays it caused itself
Rest was weather, ATC or security
Reading Frontier Airlines’ record
Most of Frontier Airlines’ delay was its own doing. Around 75% of the minutes it lost came from crew, maintenance and aircraft arriving late from earlier legs — causes inside the airline — rather than weather or air traffic control. That is the part a change of management can change, and the part that does not improve on its own.
Frontier Airlines sits mid-table, which for an airline's punctuality is a better outcome than it sounds.
The extremes are far apart. On SJU to MCO it arrived on time 80% of the time; on MCO to ATL the figure was 52.73%. Same airline, same fleet, same procedures — which is the clearest argument on this site for checking the route rather than the carrier.
Each axis is a percentile against the other US airlines in the same period, not an absolute score. Further out is better than most; nearer the centre is worse than most.
Frontier Airlines in five measures
An airline's headline on-time rate hides more than it shows. Two carriers can both arrive on time 75% of the time while one is late by twelve minutes and the other by an hour, or while one is evenly mediocre everywhere and the other is excellent on most routes and dreadful on a few.
These five axes pull those apart. Each is scored against the other US airlines in the same period rather than on an absolute scale, because on-time rates cluster tightly enough that raw numbers would draw every carrier as the same shape.
Same everywhere is the one worth reading twice: it measures how far Frontier Airlines's on-time rate moves from route to route. A carrier scoring low there has an average propped up by routes you may not be flying.
Its most reliable routes
- SJU → MCO San Juan to Orlando 80%
- PHX → DEN Phoenix to Denver 75.68%
- CLE → MCO Cleveland to Orlando 73.95%
- DEN → PHX Denver to Phoenix 73.87%
- MCO → SJU Orlando to San Juan 73.85%
- MCO → PHL Orlando to Philadelphia 73.33%
- LAS → DEN Las Vegas to Denver 73.01%
- MCO → CLE Orlando to Cleveland 72.03%
- PHL → ATL Philadelphia to Atlanta 70.91%
- PHL → MCO Philadelphia to Orlando 70.68%
Its worst routes
- MCO → ATL Orlando to Atlanta 52.73%
- ATL → BWI Atlanta to Baltimore 60.55%
- BWI → ATL Baltimore to Atlanta 61.9%
- ATL → MCO Atlanta to Orlando 64.55%
- ATL → PHL Atlanta to Philadelphia 64.55%
- DEN → DFW Denver to Dallas/Fort Worth 65.18%
- DFW → DEN Dallas/Fort Worth to Denver 66.37%
- DEN → LAS Denver to Las Vegas 69.51%
- PHL → MCO Philadelphia to Orlando 70.68%
- PHL → ATL Philadelphia to Atlanta 70.91%
How Frontier Airlines compares
Figures cover February 2026 – July 2026 and are counted from the regulators' own published files. A grade describes the past and is not a prediction about a particular flight, nor a safety rating. How the grade is calculated →