Carrier route record

F9JFK→ATL

Frontier Airlines · New York to Atlanta

Flights: 661
Period: September 2025 to August 2026
Share of route: 16%
Carriers: 3

Historical statistics for September 2025 to August 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, 9 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 661 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 2,453 at 81.4% on time.

The national on-time rate over the same period is 77.3%, so Frontier on JFK to ATL runs 9 points behind the country as a whole. Across a thousand flights that is about 87 extra late arrivals.

On time

68.6%

Arrivals under 15 minutes late, of 646 completed flights

Avg delay

82 min

Across delayed arrivals only, not all flights

Cancelled

2.27%

National rate is 1.89%

Whole route

75.5%

Every carrier on JFK to ATL, 4,227 flights

These figures cover 661 flights between September 2025 and August 2026. Beyond the headline rate, 11.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Carrier by carrier

Frontier against every carrier on JFK to ATL

Frontier flew 661 of the 4,227 flights on JFK to ATL, about 16% of it. Its 68.6% on time is 7 points worse than the route as a whole, which runs 75.5%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Delta at 81.4% to JetBlue at 66.5%.

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 81.4% of the time; JetBlue Airways manages 66.5%. Sample sizes sit next to every figure, because a two-point gap across 1,113 flights means less than a ten-point one.

On-time performance by carrier on JFK to ATL
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines	2,453	81.4%	89 min	1.67%	B
Frontier Airlines (this page)	661	68.6%	82 min	2.27%	C
JetBlue Airways	1,113	66.5%	77 min	5.48%	C−

JetBlue Airways cancels 5.5% 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

F9 473113:0066.1% · 307 flights

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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 661 flights.

5am–8am225 flights69.4%
8am–11am152 flights71.8%
11am–2pm284 flights66.2%
2pm–5pm—
5pm–8pm—
8pm–5am—

Scale runs 60% to 75%. 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 66.2% on time against 71.8% 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 11am–2pm window is the busiest, with 284 flights scheduled in it.

Across the year

Frontier on JFK to ATL through the year

Darker means more delays. Figures are on-time percentages.February best, December worst

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 82.4% on time and Sunday the weakest at 59.4%, a spread of 23 points.

Arrival by arrival

How late Frontier on JFK to ATL runs when it is late

Frontier on JFK to ATL often beats the schedule: 182 of 646 completed flights, 28%, arrived 15 minutes or more early. The 203 late arrivals split 62 under half an hour, 69 between 30 and 60 minutes, and 72 an hour or more.

15+ min early182 flights28.2%
Within 15 min261 flights40.4%
15–29 min late62 flights9.6%
30–59 min late69 flights10.7%
1–2 hours late46 flights7.1%
2+ hours late26 flights4.0%

Scale runs 0% to 100%.

Share of 646 completed flights by arrival against schedule.

29 of 149 late departures made up the time and arrived on time, 19% of them. In the other direction, 83 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at ATL.

The worst days

Worst days for Frontier on JFK to ATL

The latest arrival of the period was on 21 July 2026, 21 hours 44 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.

The latest arrivals of Frontier on JFK to ATL in the period
Date	Arrived late by	Largest filed cause
21 July 2026	21 hours 44 minutes	Late-arriving aircraft
20 January 2026	17 hours 57 minutes	Carrier
18 June 2026	11 hours 23 minutes	Late-arriving aircraft
22 September 2025	10 hours 30 minutes	Late-arriving aircraft
28 October 2025	9 hours 52 minutes	Late-arriving aircraft

Delay causes

Why Frontier runs late on this route

Late-arriving aircraft accounts for 47% of the 17,000 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
47%
National Airspace System
26%
Carrier
25%
Extreme weather
2%

47% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 17,000 reported delay minutes here, that single category outweighs weather by 31 to one. The split is drawn from 16,589 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 71.8% on time here.

Cancellations sit at 2.27% against a national 1.89%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

11.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.

The return leg runs 70.1% on time across 659 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

One caution: this is a thin sample. 661 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. 661 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 68.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 646 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures