Flight number record
F9 1670
Frontier Airlines · Atlanta to Raleigh
- Route
- ATL → RDU
- Departs
- 22:45
- Flights
- 311
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 1670, check with Frontier Airlines.
F9 1670 earns an F−, which is as low as this site's scale goes for a reason. Only 50.8% of flights arrive inside the 15-minute window, 27 points worse than the national rate of 77.3%. Late arrivals average a little over an hour. Treat any tight connection here as a coin flip. That rests on 311 flights, with a median arrival 12 minutes late.
The national on-time rate over the same period is 77.3%, so F9 1670 runs 27 points behind the country as a whole. Across a thousand flights that is about 265 extra late arrivals.
Key figures
On time
50.8%
Arrivals under 15 minutes late, of 301 completed flights
Avg delay
79 min
Across delayed arrivals only, not all flights
Cancelled
3.22%
National rate is 1.89%
1 hour+ late
20.9%
National rate is 8.3%
These figures cover 311 flights between September 2025 and August 2026. Beyond the headline rate, 20.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When F9 1670 flies
F9 1670 flies ATL to RDU without a single fixed slot. Its most common scheduled departure was 22:45, used on 44 of 311 flights, with 22:44 (44 flights) and 22:30 (33 flights) next.
- Departs 22:4544 flights14.1%
- Departs 22:4444 flights14.1%
- Departs 22:3033 flights10.6%
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 22:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and F9 1670 runs 19 points worse at 50.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
F9 1670 next to ATL to RDU
Every carrier on ATL to RDU combined arrived on time 80.0% of the time across 4,642 flights, so F9 1670 is 29 points behind it. Frontier flew 646 flights on the same city pair under all its flight numbers, including this one, and those ran 60.2% on time. Across its whole network Frontier Airlines managed 72.7%, which this flight trails by 22 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 1670thin sample | 311 | 50.8% | 79 min | 3.22% | F− |
| All Frontier Airlines on ATL–RDU | 646 | 60.2% | 74 min | 2.79% | D |
| All carriers on ATL–RDU | 4,642 | 80.0% | 62 min | 1.53% | B |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 1670 quarter by quarter
F9 1670 did not run the same all year. Its best quarter was Apr–Jun 2026 at 59.8% on time and its weakest Jan–Mar 2026 at 34.4%, a swing of 25 points on roughly 78 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 202525 flights—
- Oct–Dec 202575 flights47.2%
- Jan–Mar 202664 flights34.4%
- Apr–Jun 202688 flights59.8%
- Jul–Sep 202659 flights42.9%
Scale runs 25% to 65%. Rows with fewer than 30 flights show a dash.
By weekday, F9 1670 did best on Saturday at 63.2% on time and worst on Monday at 32.7%. Each day rests on about 44 flights, so a gap of 31 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 1670 runs when it is late
The 148 late arrivals split 36 under half an hour, 49 between 30 and 60 minutes, and 63 an hour or more.
- 15+ min early58 flights19.3%
- Within 15 min95 flights31.6%
- 15–29 min late36 flights12.0%
- 30–59 min late49 flights16.3%
- 1–2 hours late38 flights12.6%
- 2+ hours late25 flights8.3%
Scale runs 0% to 100%.
Share of 301 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 154 departures that left 15 minutes late or more, only 13 made it up before arrival. 7 flights left on time and still arrived late.
The worst days
Worst days for F9 1670
The latest arrival of the period was on 7 December 2025, 18 hours 9 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 |
|---|---|---|
| 7 December 2025 | 18 hours 9 minutes | Late-arriving aircraft |
| 8 November 2025 | 6 hours 47 minutes | Late-arriving aircraft |
| 14 June 2026 | 5 hours | Late-arriving aircraft |
| 8 March 2026 | 4 hours 10 minutes | Carrier |
| 26 December 2025 | 3 hours 55 minutes | Late-arriving aircraft |
Delay causes
Why F9 1670 runs late
Late-arriving aircraft accounts for 67% of the 12,000 delay minutes carriers reported here, and the remaining four split what is left.
- 67%Late-arriving aircraft
- 27%Carrier
- 5%National Airspace System
- 1%Extreme weather
67% 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 67 to one. The split is drawn from 11,642 delay minutes reported on F9 1670.
Cancellations run at 3.22%, 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
20.9% 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.
Every one of the 311 flights under F9 1670 in the data flew ATL to RDU. 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. 311 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 1670
For a booking, the cancellation rate is the figure to plan around on F9 1670: 3.22% of its 311 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
- ATL to RDU, every carrier and departure
- RDU to ATL, the return direction
- Delta Air Lines 2052 on the same route90.5%
- Delta Air Lines 1518 on the same route76.0%
- Frontier Airlines 1168 on the same route69.0%
- Delta Air Lines 2600 on the same route76.9%
- Delta Air Lines 1699 on the same route93.2%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Raleigh-Durham International (RDU) 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.