Flight number record
F9 1003
Frontier Airlines · Philadelphia to Atlanta
- Route
- PHL → ATL
- Departs
- 19:10
- Flights
- 252
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 1003, check with Frontier Airlines.
F9 1003 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 252 flights, with a median arrival 2 minutes late.
The national on-time rate over the same period is 77.3%, so F9 1003 runs 10 points behind the country as a whole. Across a thousand flights that is about 102 extra late arrivals.
Key figures
On time
67.1%
Arrivals under 15 minutes late, of 243 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
3.17%
National rate is 1.89%
1 hour+ late
13.2%
National rate is 8.3%
These figures cover 252 flights between September 2025 and August 2026. Beyond the headline rate, 13.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When F9 1003 flies
F9 1003 flies PHL to ATL without a single fixed slot. Its most common scheduled departure was 19:10, used on 47 of 252 flights, with 13:02 (38 flights) and 16:35 (27 flights) next.
- Departs 19:1047 flights18.7%
- Departs 13:0238 flights15.1%
- Departs 16:3527 flights10.7%
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 19:10 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and F9 1003 runs level with that at 67.1%. 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 1003 next to PHL to ATL
Every carrier on PHL to ATL combined arrived on time 78.0% of the time across 5,793 flights, so F9 1003 is 11 points behind it. Frontier flew 1,082 flights on the same city pair under all its flight numbers, including this one, and those ran 66.7% on time. Across its whole network Frontier Airlines managed 72.7%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 1003thin sample | 252 | 67.1% | 71 min | 3.17% | C− |
| All Frontier Airlines on PHL–ATL | 1,082 | 66.7% | 71 min | 2.77% | C |
| All carriers on PHL–ATL | 5,793 | 78.0% | 71 min | 3.11% | B− |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 1003 quarter by quarter
F9 1003 did not run the same all year. Its best quarter was Oct–Dec 2025 at 74.7% on time and its weakest Jan–Mar 2026 at 59.7%, a swing of 15 points on roughly 84 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 202518 flights—
- Oct–Dec 202578 flights74.7%
- Jan–Mar 202671 flights59.7%
- Apr–Jun 202667 flights63.6%
- Jul–Sep 202618 flights—
Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, F9 1003 did best on Tuesday at 81.2% on time and worst on Sunday at 53.5%. Each day rests on about 36 flights, so a gap of 28 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 1003 runs when it is late
F9 1003 often beats the schedule: 63 of 243 completed flights, 26%, arrived 15 minutes or more early. The 80 late arrivals split 20 under half an hour, 28 between 30 and 60 minutes, and 32 an hour or more.
- 15+ min early63 flights25.9%
- Within 15 min100 flights41.2%
- 15–29 min late20 flights8.2%
- 30–59 min late28 flights11.5%
- 1–2 hours late21 flights8.6%
- 2+ hours late11 flights4.5%
Scale runs 0% to 100%.
Share of 243 completed flights by arrival against schedule.
12 of 62 late departures made up the time and arrived on time, 19% of them. In the other direction, 30 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 F9 1003
The latest arrival of the period was on 1 February 2026, 4 hours 39 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.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 February 2026 | 4 hours 39 minutes | Late-arriving aircraft |
| 27 December 2025 | 4 hours 13 minutes | Extreme weather |
| 1 April 2026 | 3 hours 55 minutes | Late-arriving aircraft |
| 21 June 2026 | 3 hours 50 minutes | Late-arriving aircraft |
| 23 March 2026 | 3 hours 21 minutes | Late-arriving aircraft |
Delay causes
Why F9 1003 runs late
Late-arriving aircraft accounts for 51% of the 5,672 delay minutes carriers reported here, and the remaining four split what is left.
- 51%Late-arriving aircraft
- 27%National Airspace System
- 19%Carrier
- 4%Extreme weather
51% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,672 reported delay minutes here, that single category outweighs weather by 13 to one. The split is drawn from 5,672 delay minutes reported on F9 1003.
Cancellations run at 3.17%, against 1.89% nationally. That is about one flight in 30 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
13.2% 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 666 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 252 flights under F9 1003 in the data flew PHL to ATL. 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. 252 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 1003
For a booking, the cancellation rate is the figure to plan around on F9 1003: 3.17% of its 252 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- PHL to ATL, every carrier and departure
- ATL to PHL, the return direction
- Delta Air Lines 1152 on the same route85.8%
- Delta Air Lines 2270 on the same route87.3%
- Frontier Airlines 2551 on the same route73.0%
- Delta Air Lines 1180 on the same route85.0%
- Delta Air Lines 1269 on the same route90.4%
- Delta Air Lines 1100 on the same route83.9%
- Philadelphia International (PHL) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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.