Flight number record
F9 1670
Frontier Airlines · Atlanta to Raleigh
- Route
- ATL → RDU
- Departs
- 22:44
- Flights
- 259
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 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 52.8% of flights arrive inside the 15-minute window, 25 points worse than the national rate of 77.6%. Late arrivals average an hour and a half. Treat any tight connection here as a coin flip. That rests on 259 flights, with a median arrival 9 minutes late.
The national on-time rate over the same period is 77.6%, so F9 1670 runs 25 points behind the country as a whole. Across a thousand flights that is about 248 extra late arrivals.
Key figures
On time
52.8%
Arrivals under 15 minutes late, of 252 completed flights
Avg delay
82 min
Across delayed arrivals only, not all flights
Cancelled
2.70%
National rate is 1.81%
1 hour+ late
19.8%
National rate is 8.1%
These figures cover 259 flights between July 2025 and June 2026. Beyond the headline rate, 19.8% 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.
Schedule
When F9 1670 flies
F9 1670 flies ATL to RDU without a single fixed slot. Its most common scheduled departure was 22:44, used on 44 of 259 flights, with 22:45 (44 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 22:4444 flights17.0%
- Departs 22:4544 flights17.0%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 22:44 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and F9 1670 runs 18 points worse at 52.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
F9 1670 next to ATL to RDU
Every carrier on ATL to RDU combined arrived on time 80.4% of the time across 4,617 flights, so F9 1670 is 28 points behind it. Frontier flew 571 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 73.2%, which this flight trails by 20 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 1670thin sample | 259 | 52.8% | 82 min | 2.70% | F |
| All Frontier Airlines on ATL–RDU | 571 | 60.2% | 75 min | 2.80% | D |
| All carriers on ATL–RDU | 4,617 | 80.4% | 61 min | 1.43% | B |
| Frontier Airlines, whole network | 205,332 | 73.2% | 84 min | 1.85% | C |
Across the year
F9 1670 quarter by quarter
F9 1670 did not run the same all year. Its best quarter was Jul–Sep 2025 at 81.2% on time and its weakest Jan–Mar 2026 at 34.4%, a swing of 47 points on roughly 65 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 202532 flights81.2%
- Oct–Dec 202575 flights47.2%
- Jan–Mar 202664 flights34.4%
- Apr–Jun 202688 flights59.8%
Scale runs 25% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, F9 1670 did best on Saturday at 64.5% on time and worst on Monday at 28.6%. Each day rests on about 37 flights, so a gap of 36 points is worth noticing but could still narrow in another year.
Delay causes
Why F9 1670 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 66% of the 9,795 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.
- 66%Late-arriving aircraft
- 28%Carrier
- 5%National Airspace System
- 1%Extreme weather
66% 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 9,795 reported delay minutes here, that single category outweighs weather by 66 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 9,795 delay minutes reported on F9 1670.
Cancellations run at 2.70%, against 1.81% nationally. That is about one flight in 40 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 19.8% 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.
Every one of the 259 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. 259 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: 2.70% of its 259 scheduled flights did not operate. A late arrival costs an hour and a half, 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 route85.2%
- Delta Air Lines 1550 on the same route84.3%
- Delta Air Lines 1518 on the same route75.8%
- Delta Air Lines 2600 on the same route79.9%
- Frontier Airlines 1168 on the same route66.4%
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.