Flight number record
F9 3423
Frontier Airlines · New York to Dallas-Fort Worth
- Route
- LGA → DFW
- Departs
- 22:00
- Flights
- 267
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s F9 3423, check with Frontier Airlines.
F9 3423 draws a C−. About 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 267 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.6%, so F9 3423 runs 12 points behind the country as a whole. Across a thousand flights that is about 123 extra late arrivals.
Key figures
On time
65.3%
Arrivals under 15 minutes late, of 248 completed flights
Avg delay
116 min
Across delayed arrivals only, not all flights
Cancelled
7.12%
National rate is 1.81%
1 hour+ late
16.1%
National rate is 8.1%
These figures cover 267 flights between July 2025 and June 2026. Beyond the headline rate, 16.1% 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 3423 flies
F9 3423 flies LGA to DFW without a single fixed slot. Its most common scheduled departure was 22:00, used on 175 of 267 flights, with 22:55 (50 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 22:00175 flights65.5%
- Departs 22:5550 flights18.7%
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 22:00 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and F9 3423 runs 5 points worse at 65.3%. 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 3423 next to LGA to DFW
Every carrier on LGA to DFW combined arrived on time 70.8% of the time across 6,782 flights, so F9 3423 is 6 points behind it. Across its whole network Frontier Airlines managed 73.2%, which this flight trails by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 3423thin sample | 267 | 65.3% | 116 min | 7.12% | C− |
| All Frontier Airlines on LGA–DFWthin sample | 291 | 66.2% | 114 min | 6.53% | C− |
| All carriers on LGA–DFW | 6,782 | 70.8% | 86 min | 4.94% | C− |
| Frontier Airlines, whole network | 205,332 | 73.2% | 84 min | 1.85% | C |
Across the year
F9 3423 quarter by quarter
F9 3423 did not run the same all year. Its best quarter was Jul–Sep 2025 at 75.9% on time and its weakest Jan–Mar 2026 at 51.4%, a swing of 25 points on roughly 67 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 202584 flights75.9%
- Oct–Dec 202566 flights65.1%
- Jan–Mar 202638 flights51.4%
- Apr–Jun 202679 flights60.6%
Scale runs 45% to 80%. Rows with fewer than 30 flights show a dash.
By weekday, F9 3423 ranged from 60.5% on Friday to 69.2% on Monday. With about 38 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Delay causes
Why F9 3423 runs late
One category carries most of the weight here. Late-arriving aircraft accounts for 71% of the 9,988 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.
- 71%Late-arriving aircraft
- 24%National Airspace System
- 4%Carrier
- 1%Extreme weather
71% 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 9,988 reported delay minutes here, that single category outweighs weather by 71 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 9,988 delay minutes reported on F9 3423.
Cancellations run at 7.12%, against 1.81% 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 16.1% 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 1,389 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 267 flights under F9 3423 in the data flew LGA 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. 267 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 3423
For a booking, the cancellation rate is the figure to plan around on F9 3423: 7.12% of its 267 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
- LGA to DFW, every carrier and departure
- DFW to LGA, the return direction
- American Airlines 1987 on the same route82.6%
- Delta Air Lines 873 on the same route78.6%
- Delta Air Lines 846 on the same route63.1%
- Delta Air Lines 860 on the same route60.1%
- American Airlines 1056 on the same route63.5%
- LaGuardia (LGA) 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.