Carrier route record
F9BWI→FLL
Frontier Airlines · Baltimore to Fort Lauderdale
- Flights
- 197
- Period
- September 2025 to August 2026
- Share of route
- 6%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on BWI to FLL earns an F−, which is as low as this site's scale goes for a reason. Only 51.3% of flights arrive inside the 15-minute window, 26 points worse than the national rate of 77.3%. Late arrivals average an hour and a half. Treat any tight connection here as a coin flip. That rests on 197 flights. The strongest carrier on the route with a full sample, Spirit Airlines, flew 687 at 78.0% on time.
The national on-time rate over the same period is 77.3%, so Frontier on BWI to FLL runs 26 points behind the country as a whole. Across a thousand flights that is about 260 extra late arrivals.
Key figures
On time
51.3%
Arrivals under 15 minutes late, of 187 completed flights
Avg delay
90 min
Across delayed arrivals only, not all flights
Cancelled
5.08%
National rate is 1.89%
Whole route
74.5%
Every carrier on BWI to FLL, 3,168 flights
These figures cover 197 flights between September 2025 and August 2026. Beyond the headline rate, 22.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Frontier against every carrier on BWI to FLL
Frontier flew 197 of the 3,168 flights on BWI to FLL, about 6% of it. Its 51.3% on time is 23 points worse than the route as a whole, which runs 74.5%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from Spirit at 78.0% to Frontier at 51.3%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The two carriers here are closely matched: 2 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Spirit Airlines | 687 | 78.0% | 63 min | 4.66% | B− |
| Southwest Airlines | 2,124 | 75.7% | 55 min | 1.69% | B |
| JetBlue Airwaysthin sample | 160 | 71.5% | 81 min | 5.00% | C− |
| Frontier Airlines (this page)thin sample | 197 | 51.3% | 90 min | 5.08% | F− |
Spirit Airlines cancels 4.7% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When Frontier runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 14 points, against 2 points between the best and worst carrier.
- 5am–8am5 flights—
- 8am–11am4 flights—
- 11am–2pm103 flights47.0%
- 2pm–5pm8 flights—
- 5pm–8pm25 flights—
- 8pm–5am52 flights61.2%
Scale runs 40% to 65%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 47.0% on time against 61.2% for 8pm–5am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 11am–2pm window is the busiest, with 103 flights scheduled in it.
Across the year
Frontier on BWI to FLL through the year
- Oct–Dec 202515 flights—
- Jan–Mar 202640 flights41.7%
- Apr–Jun 202680 flights73.3%
- Jul–Sep 202662 flights30.6%
Scale runs 20% to 80%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 51.3% on time across 197 flights.
Frontier on BWI to FLL did not run the same all year. Its best quarter was Apr–Jun 2026 at 73.3% on time and its weakest Jul–Sep 2026 at 30.6%, a swing of 43 points on roughly 66 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.
Across the week, Thursday is the strongest day at 55.6% on time and Sunday the weakest at 48.6%, a spread of 7 points.
Arrival by arrival
How late Frontier on BWI to FLL runs when it is late
The 91 late arrivals split 29 under half an hour, 20 between 30 and 60 minutes, and 42 an hour or more.
- 15+ min early42 flights22.5%
- Within 15 min54 flights28.9%
- 15–29 min late29 flights15.5%
- 30–59 min late20 flights10.7%
- 1–2 hours late20 flights10.7%
- 2+ hours late22 flights11.8%
Scale runs 0% to 100%.
Share of 187 completed flights by arrival against schedule.
16 of 93 late departures made up the time and arrived on time, 17% of them. In the other direction, 14 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 FLL.
The worst days
Worst days for Frontier on BWI to FLL
The latest arrival of the period was on 22 July 2026, 8 hours 28 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in July 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 22 July 2026 | 8 hours 28 minutes | Late-arriving aircraft |
| 17 July 2026 | 5 hours 54 minutes | Carrier |
| 10 August 2026 | 5 hours 46 minutes | Late-arriving aircraft |
| 21 December 2025 | 5 hours 44 minutes | Carrier |
| 21 July 2026 | 5 hours 13 minutes | National Airspace System |
Delay causes
Why Frontier runs late on this route
Late-arriving aircraft accounts for 61% of the 8,204 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Late-arriving aircraft
- 20%Carrier
- 19%National Airspace System
- 0%Extreme weather
61% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 8,204 reported delay minutes here, that single category outweighs weather by 61 to one. The split is drawn from 8,204 reported delay minutes.
Cancellations run at 5.08%, against 1.89% nationally. That is about one flight in twenty 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 stage length
What a delay here costs
22.5% 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 925 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.
The return leg is a different operation and performs like one: it runs 66.8% on time across 198 flights, 16 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 16 points of difference.
One caution: this is a thin sample. 197 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 Frontier on BWI to FLL
Put together: the delay figures matter less here than the 5.08% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 8pm–5am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 187 completed flights over 12 months sit behind that.
Related
Where to go next
- BWI to FLL, every carrier
- Frontier on FLL to BWI, the return leg
- Spirit Airlines on BWI to FLL78.0%
- Southwest Airlines on BWI to FLL75.7%
- JetBlue Airways on BWI to FLL71.5%
- Frontier Airlines network-wide record
- Baltimore/Washington International Thurgood Marshall (BWI) delay statistics
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.