Flight number record
F9 3021
Frontier Airlines · Atlanta to Dallas-Fort Worth
- Route
- ATL → DFW
- Departs
- 06:00
- Flights
- 261
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s F9 3021, check with Frontier Airlines.
F9 3021 draws a D. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 261 flights, with a median arrival 1 minute late.
The national on-time rate over the same period is 77.6%, so F9 3021 runs 13 points behind the country as a whole. Across a thousand flights that is about 130 extra late arrivals.
Key figures
On time
64.6%
Arrivals under 15 minutes late, of 254 completed flights
Avg delay
64 min
Across delayed arrivals only, not all flights
Cancelled
2.30%
National rate is 1.81%
1 hour+ late
13.0%
National rate is 8.1%
These figures cover 261 flights between July 2025 and June 2026. Beyond the headline rate, 13.0% 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 3021 flies
F9 3021 flies ATL to DFW without a single fixed slot. Its most common scheduled departure was 06:00, used on 40 of 261 flights. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 06:0040 flights15.3%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and F9 3021 runs 25 points worse at 64.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
F9 3021 next to ATL to DFW
Every carrier on ATL to DFW combined arrived on time 74.3% of the time across 6,698 flights, so F9 3021 is 10 points behind it. Frontier flew 873 flights on the same city pair under all its flight numbers, including this one, and those ran 60.4% on time. Across its whole network Frontier Airlines managed 73.2%, which this flight trails by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 3021thin sample | 261 | 64.6% | 64 min | 2.30% | D |
| All Frontier Airlines on ATL–DFW | 873 | 60.4% | 79 min | 2.29% | D |
| All carriers on ATL–DFW | 6,698 | 74.3% | 80 min | 2.76% | C |
| Frontier Airlines, whole network | 205,332 | 73.2% | 84 min | 1.85% | C |
Across the year
F9 3021 quarter by quarter
F9 3021 did not run the same all year. Its best quarter was Jan–Mar 2026 at 74.6% on time and its weakest Jul–Sep 2025 at 57.6%, a swing of 17 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 202569 flights57.6%
- Oct–Dec 202546 flights61.4%
- Jan–Mar 202665 flights74.6%
- Apr–Jun 202681 flights64.2%
Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, F9 3021 ranged from 62.8% on Sunday to 74.4% on Thursday. With about 37 flights behind each day, a spread of 12 points is inside normal variation, so the day you fly is not worth changing for this flight.
Delay causes
Why F9 3021 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 5,748 reported delay minutes.
- 42%Late-arriving aircraft
- 36%Carrier
- 19%National Airspace System
- 3%Extreme weather
42% 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 5,748 reported delay minutes here, that single category outweighs weather by 14 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 5,748 delay minutes reported on F9 3021.
Cancellations sit at 2.30% against a national 1.81%, which is ordinary. Diversions add another 0.38%.
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. 13.0% 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.
The 731 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
Every one of the 261 flights under F9 3021 in the data flew ATL to DFW. 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. 261 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 3021
For a booking, F9 3021 is a flight to put a long connection behind. 13.0% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- ATL to DFW, every carrier and departure
- DFW to ATL, the return direction
- American Airlines 1567 on the same route86.3%
- Delta Air Lines 921 on the same route74.4%
- Delta Air Lines 961 on the same route87.6%
- Delta Air Lines 839 on the same route78.4%
- Delta Air Lines 818 on the same route78.9%
- Delta Air Lines 31 on the same route64.6%
- Hartsfield-Jackson Atlanta International (ATL) delay statistics
- Dallas/Fort Worth International (DFW) 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.