Flight number record
F9 1158
Frontier Airlines · Atlanta to Newark
- Route
- ATL → EWR
- Departs
- 19:04
- Flights
- 343
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 1158, check with Frontier Airlines.
F9 1158 draws a D−. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is close to two hours behind schedule. Build slack into anything you connect to. That rests on 343 flights, with a median arrival 2 minutes early.
The national on-time rate over the same period is 77.3%, so F9 1158 runs 15 points behind the country as a whole. Across a thousand flights that is about 154 extra late arrivals.
Key figures
On time
61.9%
Arrivals under 15 minutes late, of 320 completed flights
Avg delay
101 min
Across delayed arrivals only, not all flights
Cancelled
6.41%
National rate is 1.89%
1 hour+ late
22.2%
National rate is 8.3%
These figures cover 343 flights between September 2025 and August 2026. Beyond the headline rate, 22.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When F9 1158 flies
F9 1158 flies ATL to EWR without a single fixed slot. Its most common scheduled departure was 19:04, used on 84 of 343 flights, with 19:08 (46 flights) and 18:49 (35 flights) next.
- Departs 19:0484 flights24.5%
- Departs 19:0846 flights13.4%
- Departs 18:4935 flights10.2%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 19:04 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and F9 1158 runs 6 points worse at 61.9%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
F9 1158 next to ATL to EWR
Every carrier on ATL to EWR combined arrived on time 72.3% of the time across 6,246 flights, so F9 1158 is 10 points behind it. Frontier flew 707 flights on the same city pair under all its flight numbers, including this one, and those ran 58.5% on time. Across its whole network Frontier Airlines managed 72.7%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 1158thin sample | 343 | 61.9% | 101 min | 6.41% | D− |
| All Frontier Airlines on ATL–EWR | 707 | 58.5% | 89 min | 4.24% | D− |
| All carriers on ATL–EWR | 6,246 | 72.3% | 78 min | 3.78% | C− |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 1158 quarter by quarter
F9 1158 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Jul–Sep 2026 at 32.0%, a swing of 58 points on roughly 69 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.
- Jul–Sep 202530 flights90.0%
- Oct–Dec 202592 flights64.0%
- Jan–Mar 202671 flights67.2%
- Apr–Jun 202688 flights63.1%
- Jul–Sep 202662 flights32.0%
Scale runs 25% to 95%.
By weekday, F9 1158 did best on Friday at 71.1% on time and worst on Sunday at 48.8%. Each day rests on about 49 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 1158 runs when it is late
F9 1158 often beats the schedule: 97 of 320 completed flights, 30%, arrived 15 minutes or more early. When F9 1158 is late it tends to be very late: 71 of its 122 late arrivals were an hour or more behind, and 38 were two hours or more.
- 15+ min early97 flights30.3%
- Within 15 min101 flights31.6%
- 15–29 min late22 flights6.9%
- 30–59 min late29 flights9.1%
- 1–2 hours late33 flights10.3%
- 2+ hours late38 flights11.9%
Scale runs 0% to 100%.
Share of 320 completed flights by arrival against schedule.
25 of 139 late departures made up the time and arrived on time, 18% of them. 8 flights left on time and still arrived late.
The worst days
Worst days for F9 1158
The latest arrival of the period was on 15 July 2026, 16 hours 21 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 July 2026 | 16 hours 21 minutes | Carrier |
| 7 August 2026 | 6 hours 37 minutes | National Airspace System |
| 9 July 2026 | 4 hours 24 minutes | National Airspace System |
| 18 July 2026 | 4 hours 6 minutes | Late-arriving aircraft |
| 27 August 2026 | 4 hours 4 minutes | National Airspace System |
Delay causes
Why F9 1158 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 12,000 reported delay minutes.
- 39%Late-arriving aircraft
- 36%National Airspace System
- 24%Carrier
- 2%Extreme weather
39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 12,000 reported delay minutes here, that single category outweighs weather by 18 to one. The split is drawn from 12,346 delay minutes reported on F9 1158.
Cancellations run at 6.41%, against 1.89% nationally. That is about one flight in fifteen cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
22.2% 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 746 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.
Every one of the 343 flights under F9 1158 in the data flew ATL to EWR. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 343 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 F9 1158
For a booking, the cancellation rate is the figure to plan around on F9 1158: 6.41% of its 343 scheduled flights did not operate. A late arrival costs close to two hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- ATL to EWR, every carrier and departure
- EWR to ATL, the return direction
- Delta Air Lines 2397 on the same route85.3%
- Delta Air Lines 2322 on the same route74.5%
- Delta Air Lines 2312 on the same route71.6%
- Frontier Airlines 4602 on the same route55.4%
- Delta Air Lines 2498 on the same route53.8%
- United Airlines 555 on the same route67.1%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Newark Liberty International (EWR) delay statistics
- Frontier Airlines on-time record
- Every Frontier Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Frontier Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.