Carrier route record
F9JFK→ATL
Frontier Airlines · New York to Atlanta
- Flights
- 737
- Period
- July 2025 to June 2026
- Share of route
- 17%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on JFK to ATL sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 737 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 2,456 at 82.2% on time.
The national on-time rate over the same period is 77.6%, so Frontier on JFK to ATL runs 7 points behind the country as a whole. Across a thousand flights that is about 71 extra late arrivals.
Key figures
On time
70.5%
Arrivals under 15 minutes late, of 721 completed flights
Avg delay
74 min
Across delayed arrivals only, not all flights
Cancelled
2.17%
National rate is 1.81%
Whole route
76.7%
Every carrier on JFK to ATL, 4,272 flights
These figures cover 737 flights between July 2025 and June 2026. Beyond the headline rate, 9.6% 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 JFK to ATL
Frontier flew 737 of the 4,272 flights on JFK to ATL, about 17% of it. Its 70.5% on time is 6 points worse than the route as a whole, which runs 76.7%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Delta at 82.2% to JetBlue at 68.3%.
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 82.2% of the time; JetBlue Airways manages 68.3%. Sample sizes sit next to every figure, because a two-point gap across 1,079 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 2,456 | 82.2% | 83 min | 1.51% | B |
| Frontier Airlines (this page) | 737 | 70.5% | 74 min | 2.17% | C |
| JetBlue Airways | 1,079 | 68.3% | 71 min | 3.99% | C− |
JetBlue Airways cancels 4.0% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Flight by flight
Frontier flight numbers on JFK to ATL
Departure window
When Frontier runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 737 flights.
- 5am–8am287 flights70.5%
- 8am–11am214 flights73.5%
- 11am–2pm236 flights67.7%
- 2pm–5pm—
- 5pm–8pm—
- 8pm–5am—
Scale runs 60% to 80%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 67.7% on time against 73.5% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 5am–8am window is the busiest, with 287 flights scheduled in it.
Across the year
Frontier on JFK to ATL through the year
December is the weak month at 52.1% on time, against 83.0% in February. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. October was the busiest month here, with 86 flights.
Across the week, Wednesday is the strongest day at 84.3% on time and Sunday the weakest at 61.7%. 23 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 42% of the 16,000 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.
- 42%Late-arriving aircraft
- 30%National Airspace System
- 27%Carrier
- 1%Extreme weather
42% 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 16,000 reported delay minutes here, that single category outweighs weather by 42 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 15,824 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 73.5% on time here.
Cancellations sit at 2.17% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
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. 9.6% 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.
The 760 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 67.1% on time across 735 flights, 3 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 3 points of difference.
One caution: this is a thin sample. 737 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 JFK to ATL
Put together: treat all of this as provisional. 737 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 70.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 721 completed flights over 12 months sit behind that.
Related
Where to go next
- JFK to ATL, every carrier
- Frontier on ATL to JFK, the return leg
- Delta Air Lines on JFK to ATL82.2%
- JetBlue Airways on JFK to ATL68.3%
- Frontier Airlines network-wide record
- John F. Kennedy International (JFK) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Same route, different airline: where the carrier you pick matters most
- Why the first flight of the morning is statistically safest
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.