Flight number record
F9 3663
Frontier Airlines · Baltimore to Orlando
- Route
- BWI → MCO
- Departs
- 15:21
- Flights
- 253
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s F9 3663, check with Frontier Airlines.
F9 3663 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 a little over an hour behind schedule. That rests on 253 flights, with a median arrival 6 minutes early.
The national on-time rate over the same period is 77.3%, so F9 3663 runs 6 points behind the country as a whole. Across a thousand flights that is about 62 extra late arrivals.
Key figures
On time
71.1%
Arrivals under 15 minutes late, of 249 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
1.58%
National rate is 1.89%
1 hour+ late
14.1%
National rate is 8.3%
These figures cover 253 flights between September 2025 and August 2026. Beyond the headline rate, 14.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When F9 3663 flies
F9 3663 flies BWI to MCO without a single fixed slot. Its most common scheduled departure was 15:21, used on 44 of 253 flights, with 15:26 (32 flights) and 15:09 (26 flights) next.
- Departs 15:2144 flights17.4%
- Departs 15:2632 flights12.6%
- Departs 15:0926 flights10.3%
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 15:21 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and F9 3663 runs level with that at 71.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
F9 3663 next to BWI to MCO
Every carrier on BWI to MCO combined arrived on time 75.5% of the time across 4,707 flights, so F9 3663 is 4 points behind it. Frontier flew 641 flights on the same city pair under all its flight numbers, including this one, and those ran 70.8% on time. 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 3663thin sample | 253 | 71.1% | 78 min | 1.58% | C |
| All Frontier Airlines on BWI–MCO | 641 | 70.8% | 86 min | 4.21% | C− |
| All carriers on BWI–MCO | 4,707 | 75.5% | 69 min | 2.61% | B |
| Frontier Airlines, whole network | 213,022 | 72.7% | 84 min | 2.05% | C |
Across the year
F9 3663 quarter by quarter
F9 3663 did not run the same all year. Its best quarter was Oct–Dec 2025 at 82.0% on time and its weakest Jul–Sep 2026 at 53.3%, a swing of 29 points on roughly 63 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 202518 flights—
- Oct–Dec 202550 flights82.0%
- Jan–Mar 202640 flights64.1%
- Apr–Jun 202683 flights78.0%
- Jul–Sep 202662 flights53.3%
Scale runs 45% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, F9 3663 did best on Wednesday at 81.8% on time and worst on Monday at 64.3%. Each day rests on about 36 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late F9 3663 runs when it is late
F9 3663 often beats the schedule: 63 of 249 completed flights, 25%, arrived 15 minutes or more early. The 72 late arrivals split 20 under half an hour, 17 between 30 and 60 minutes, and 35 an hour or more.
- 15+ min early63 flights25.3%
- Within 15 min114 flights45.8%
- 15–29 min late20 flights8.0%
- 30–59 min late17 flights6.8%
- 1–2 hours late20 flights8.0%
- 2+ hours late15 flights6.0%
Scale runs 0% to 100%.
Share of 249 completed flights by arrival against schedule.
11 of 67 late departures made up the time and arrived on time, 16% of them. In the other direction, 16 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at MCO.
The worst days
Worst days for F9 3663
The latest arrival of the period was on 3 July 2026, 8 hours 38 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across July, November and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 3 July 2026 | 8 hours 38 minutes | Carrier |
| 8 November 2025 | 5 hours | National Airspace System |
| 28 August 2026 | 4 hours 10 minutes | Late-arriving aircraft |
| 3 November 2025 | 2 hours 47 minutes | Late-arriving aircraft |
| 14 July 2026 | 2 hours 40 minutes | National Airspace System |
Delay causes
Why F9 3663 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 5,633 reported delay minutes.
- 40%Late-arriving aircraft
- 39%National Airspace System
- 20%Carrier
- 1%Extreme weather
40% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 5,633 reported delay minutes here, that single category outweighs weather by 34 to one. The split is drawn from 5,633 delay minutes reported on F9 3663.
Cancellations sit at 1.58% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
14.1% 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 787 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 253 flights under F9 3663 in the data flew BWI to MCO. 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. 253 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 3663
For a booking, F9 3663 is a flight to put a long connection behind. 14.1% 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
- BWI to MCO, every carrier and departure
- MCO to BWI, the return direction
- Baltimore/Washington International Thurgood Marshall (BWI) delay statistics
- Orlando International (MCO) 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.