Carrier route record
F9ATL→JFK
Frontier Airlines · Atlanta to New York
- Flights
- 735
- 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 ATL to JFK draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 735 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 2,448 at 79.7% on time.
The national on-time rate over the same period is 77.6%, so Frontier on ATL to JFK runs 11 points behind the country as a whole. Across a thousand flights that is about 105 extra late arrivals.
Key figures
On time
67.1%
Arrivals under 15 minutes late, of 717 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
2.31%
National rate is 1.81%
Whole route
75.3%
Every carrier on ATL to JFK, 4,263 flights
These figures cover 735 flights between July 2025 and June 2026. Beyond the headline rate, 13.4% 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 JFK
Frontier flew 735 of the 4,263 flights on ATL to JFK, about 17% of it. Its 67.1% on time is 8 points worse than the route as a whole, which runs 75.3%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Delta at 79.7% to Frontier at 67.1%.
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 79.7% of the time; JetBlue Airways manages 70.6%. Sample sizes sit next to every figure, because a two-point gap across 1,080 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 2,448 | 79.7% | 75 min | 1.51% | B |
| JetBlue Airways | 1,080 | 70.6% | 100 min | 4.26% | C− |
| Frontier Airlines (this page) | 735 | 67.1% | 79 min | 2.31% | C |
JetBlue Airways cancels 4.3% 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 ATL to JFK
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 23 points, against 9 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am216 flights76.5%
- 8am–11am233 flights74.7%
- 11am–2pm—
- 2pm–5pm—
- 5pm–8pm—
- 8pm–5am286 flights53.5%
Scale runs 45% to 80%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 53.5% on time, against 76.5% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8pm–5am window is the busiest, with 286 flights scheduled in it.
Across the year
Frontier on ATL to JFK through the year
July is the worst month at 50.0% on time, 30 points below May, the best at 80.0%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. October was the busiest month here, with 85 flights.
Across the week, Wednesday is the strongest day at 77.0% on time and Friday the weakest at 60.6%. 16 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 49% of the 19,000 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.
- 49%Late-arriving aircraft
- 35%Carrier
- 13%National Airspace System
- 4%Extreme weather
49% 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 19,000 reported delay minutes here, that single category outweighs weather by 13 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 18,530 reported delay minutes.
The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 6,421 of the 19,000 delay minutes reported here.
Cancellations sit at 2.31% against a national 1.81%, which is ordinary. Diversions add another 0.14%.
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. 13.4% 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 70.5% on time across 737 flights, 3 points above 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. 735 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 JFK
Put together: treat all of this as provisional. 735 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 67.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 717 completed flights over 12 months sit behind that.
Related
Where to go next
- ATL to JFK, every carrier
- Frontier on JFK to ATL, the return leg
- Delta Air Lines on ATL to JFK79.7%
- JetBlue Airways on ATL to JFK70.6%
- Frontier Airlines network-wide record
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- John F. Kennedy International (JFK) 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.