Flight profile · Frontier Airlines
F93999
Dallas–Fort Worth (DFW) to San Francisco (SFO) · scheduled 8:59 PM – 11:00 PM
How F93999 performs
604 operations, November 2023 – August 2026.
Between its first and last recorded date on DFW → SFO, F93999 averaged about 4 operations a week (604 in 1,020 days, cancelled ones included).
F93999 arrived on time 58.7% of the time, against 64.1% for all DFW → SFO flights, so this departure is 5.4 percentage points worse than the route as a whole. Against Frontier Airlines’ own flights on this route it is 3.4 points worse.
Source: US DOT Bureau of Transportation Statistics · 604 operations, November 2023 – August 2026 · If F93999 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where F93999 is right now
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| F93999 | 58.7% | 3.81% | 6 min | 14.6% | 604 |
| Frontier Airlines on DFW → SFO | 62.1% | 3.23% | 3 min | 13.8% | 804 |
| All DFW → SFO flights | 64.1% | 1.77% | 2 min | 13.4% | 13,127 |
F93999 has cancelled 3.81% of its scheduled departures (23 of 604), against 1.77% for all DFW → SFO flights — this specific departure cancels 2.0 percentage points more often than the route as a whole. Different flight numbers on the same route can carry different aircraft, crews and schedules, so this is a fact about F93999 specifically, not about the route it flies.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – August 2026
Why F93999 runs late
Where US DOT attributed the delay minutes on this flight.
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for F93999 on DFW → SFO. Only delays of 15 minutes or more are attributed. What the five causes mean
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – August 2026
Does a late aircraft delay this flight?
How often the plane that flies F93999 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, F93999 pushed back an average of 37 minutes late; when it came in on time or early, an average of 9 minutes late.
Matched by tail number to the aircraft’s previous flight into DFW: 539 of 585 departures. Unknown, cancelled or diverted inbounds and gaps over 12 hours are left out.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| F93999 | 28% | 55% | 26% |
| Network, same turn | 17% | 69% | 9% |
81 scheduled minutes is enough to clean and board when the aircraft is on time, with little to spare when it is not.
The network row is every flight with a scheduled turn of 60 to 89 minutes. How often F93999’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often F93999 left 15 or more minutes late is lower than the network’s.
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – August 2026
From pushback to gate
When it leaves DFW late, does that still matter by the time it reaches SFO?
F93999 pushes back an average of 21.2 minutes late and reaches the gate at SFO an average of 18.6 minutes late. The 2.6 minutes between those two figures are slack the published schedule already carries, so a late pushback is partly, not fully, made up before the gate. It spends 23.7 minutes on the taxiways at DFW, 4.6 minutes longer than a typical DFW departure in the same hour.
On arrival at SFO, F93999 spends 17.8 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 9.9 minutes longer than a typical SFO arrival (8.0 min).
Taxi-out is gate to wheels up and sits inside the scheduled block; the hourly comparison is 52,068 DFW departures. Taxi-in is landing to gate, set against 449,639 arrivals at SFO. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – August 2026
The hour it leaves DFW
F93999 has one departure time, 8:59 PM, so this is what that hour at DFW is worth.
On-time arrival rate. 52,068 departures from DFW are scheduled in the 8 PM–9 PM hour over the period, against 989,065 across the whole day.
F93999 is scheduled out of DFW at 8:59 PM, in the 8 PM–9 PM bank. Departures from DFW in that hour arrive on time 62.8% of the time against 73.1% across the airport’s whole day — the slot alone is worth 10.3 points worse before anything about this particular flight is considered.
Both airport figures cover every destination from DFW, so they describe the slot, not this journey; the route comparison is above. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · November 2023 – August 2026 · Hours below 120 departures are not scored.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
72 min late
against a median of 6 min late
F93999 has an average that understates its risk: a typical arrival is 6 min late, but the worst tenth are 66 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 604 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering November 2023 – August 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| F93999 this flight | Frontier Airlines | 58.7% | 6 min late | 604 |
| AA1430 | American Airlines | 53.1% | 11 min late | 1,048 |
| AA2810 | American Airlines | 52.8% | 11 min late | 638 |
| AA446 | American Airlines | 52.4% | 13 min late | 787 |
Among all 4 departures on this route with at least 600 operations, F93999 has the highest on-time rate. Every departure here has at least 600 operations; the other rows are the most punctual on the route, not all of them.
Data and methodology
Calculated by FlyerIntel from 604 records of F93999 operating DFW → SFO, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule; cancelled and diverted flights are reported separately, not in the on-time rate.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed