Carrier route record
F9ATL→JAX
Frontier Airlines · Atlanta to Jacksonville
- Flights
- 188
- Period
- July 2025 to June 2026
- Share of route
- 5%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on ATL to JAX draws a D. Roughly one flight in two arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 188 flights, with a median arrival 5 minutes late.
The national on-time rate over the same period is 77.6%, so Frontier on ATL to JAX runs 19 points behind the country as a whole. Across a thousand flights that is about 192 extra late arrivals.
Key figures
On time
58.4%
Arrivals under 15 minutes late, of 185 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
1.06%
National rate is 1.81%
Whole route
75.5%
Every carrier on ATL to JAX, 4,017 flights
These figures cover 188 flights between July 2025 and June 2026. Beyond the headline rate, 13.0% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
Frontier against every carrier on ATL to JAX
Frontier flew 188 of the 4,017 flights on ATL to JAX, about 5% of it. Its 58.4% on time is 17 points worse than the route as a whole, which runs 75.5%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Delta at 76.3% to Frontier at 58.4%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 3,829 | 76.3% | 57 min | 1.44% | B |
| Frontier Airlines (this page)thin sample | 188 | 58.4% | 55 min | 1.06% | D |
Departure window
When Frontier runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 21 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am—
- 8am–11am18 flights—
- 11am–2pm4 flights—
- 2pm–5pm110 flights50.0%
- 5pm–8pm56 flights70.9%
- 8pm–5am—
Scale runs 40% to 75%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 70.9% on time. The full set of windows spans 21 points.
Across the year
Frontier on ATL to JAX through the year
- Jul–Sep 202526 flights—
- Oct–Dec 202532 flights54.8%
- Jan–Mar 202649 flights67.3%
- Apr–Jun 202681 flights49.4%
Scale runs 40% to 75%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 58.4% on time across 188 flights.
Frontier on ATL to JAX did not run the same all year. Its best quarter was Jan–Mar 2026 at 67.3% on time and its weakest Apr–Jun 2026 at 49.4%, a swing of 18 points on roughly 63 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
Across the week, Thursday is the strongest day at 69.4% on time and Sunday the weakest at 43.6%. 26 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Frontier runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 60% of the 4,261 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 60%Late-arriving aircraft
- 22%Carrier
- 16%National Airspace System
- 1%Extreme weather
60% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 4,261 reported delay minutes here, that single category outweighs weather by 43 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 4,261 reported delay minutes.
Cancellations sit at 1.06% against a national 1.81%, which is ordinary. Diversions add another 0.53%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.0% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
At 269 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5pm–8pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 53.6% on time across 188 flights, 5 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 5 points of difference.
One caution: this is a thin sample. 188 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking Frontier on ATL to JAX
Put together: treat all of this as provisional. 188 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 58.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 185 completed flights over 12 months sit behind that.
Related
Where to go next
- ATL to JAX, every carrier
- Frontier on JAX to ATL, the return leg
- Delta Air Lines on ATL to JAX76.3%
- Frontier Airlines network-wide record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.