Flight number record
F9 2635
Frontier Airlines · Orlando to St. Louis
- Route
- MCO → STL
- Departs
- 22:30
- Flights
- 286
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 2635, check with Frontier Airlines.
F9 2635 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 286 flights, with a median arrival 7 minutes early.
The national on-time rate over the same period is 77.3%, so F9 2635 runs 6 points behind the country as a whole. Across a thousand flights that is about 61 extra late arrivals.
Key figures
On time
71.2%
Arrivals under 15 minutes late, of 281 completed flights
Avg delay
98 min
Across delayed arrivals only, not all flights
Cancelled
1.40%
National rate is 1.89%
1 hour+ late
17.4%
National rate is 8.3%
These figures cover 286 flights between September 2025 and August 2026. Beyond the headline rate, 17.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When F9 2635 flies
F9 2635 flies MCO to STL without a single fixed slot. Its most common scheduled departure was 22:30, used on 43 of 286 flights, with 20:43 (42 flights) and 22:17 (38 flights) next.
- Departs 22:3043 flights15.0%
- Departs 20:4342 flights14.7%
- Departs 22:1738 flights13.3%
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 22:30 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and F9 2635 runs level with that at 71.2%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
F9 2635 next to MCO to STL
Every carrier on MCO to STL combined arrived on time 76.6% of the time across 2,504 flights, so F9 2635 is 5 points behind it. Across its whole network Frontier Airlines managed 72.7%, which this flight trails by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| F9 2635thin sample | 286 | 71.2% | 98 min | 1.40% | C |
| All Frontier Airlines on MCO–STL | 396 | 73.6% | 96 min | 1.26% | C |
| All carriers on MCO–STL | 2,504 | 76.6% | 68 min | 0.76% | B+ |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 2635 quarter by quarter
F9 2635 did not run the same all year. Its best quarter was Oct–Dec 2025 at 78.2% on time and its weakest Jul–Sep 2026 at 64.3%, a swing of 14 points on roughly 72 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.
- Oct–Dec 202557 flights78.2%
- Jan–Mar 202687 flights68.6%
- Apr–Jun 202685 flights73.8%
- Jul–Sep 202657 flights64.3%
Scale runs 55% to 85%.
By weekday, F9 2635 did best on Wednesday at 83.3% on time and worst on Sunday at 55.0%. Each day rests on about 41 flights, so a gap of 28 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 2635 runs when it is late
F9 2635 often beats the schedule: 94 of 281 completed flights, 33%, arrived 15 minutes or more early. When F9 2635 is late it tends to be very late: 49 of its 81 late arrivals were an hour or more behind, and 24 were two hours or more.
- 15+ min early94 flights33.5%
- Within 15 min106 flights37.7%
- 15–29 min late14 flights5.0%
- 30–59 min late18 flights6.4%
- 1–2 hours late25 flights8.9%
- 2+ hours late24 flights8.5%
Scale runs 0% to 100%.
Share of 281 completed flights by arrival against schedule.
16 of 92 late departures made up the time and arrived on time, 17% of them. Only 5 left on time and still arrived late.
The worst days
Worst days for F9 2635
The latest arrival of the period was on 6 August 2026, 9 hours 5 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The five worst days are spread across August, December, October and February, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 August 2026 | 9 hours 5 minutes | National Airspace System |
| 7 December 2025 | 5 hours 7 minutes | Carrier |
| 27 October 2025 | 4 hours 29 minutes | Extreme weather |
| 28 February 2026 | 4 hours 14 minutes | Late-arriving aircraft |
| 28 August 2026 | 4 hours 1 minute | National Airspace System |
Delay causes
Why F9 2635 runs late
Late-arriving aircraft accounts for 52% of the 7,915 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Late-arriving aircraft
- 30%Carrier
- 11%National Airspace System
- 6%Extreme weather
52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 7,915 reported delay minutes here, that single category outweighs weather by 8 to one. The split is drawn from 7,915 delay minutes reported on F9 2635.
Cancellations sit at 1.40% against a national 1.89%, which is ordinary. Diversions add another 0.35%.
Connections and routes
What a delay on this flight costs
17.4% 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.
The 882 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.
Every one of the 286 flights under F9 2635 in the data flew MCO to STL. 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. 286 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 2635
For a booking, F9 2635 is a flight to put a long connection behind. 17.4% 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
- MCO to STL, every carrier and departure
- STL to MCO, the return direction
- Orlando International (MCO) delay statistics
- St. Louis Lambert International (STL) 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.