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DelayAtlas

Carrier route record

NKFLL→BWI

Spirit Airlines · Fort Lauderdale to Baltimore

Flights
684
Period
September 2025 to August 2026
Share of route
22%
Carriers
4
C−GRADE

Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Spirit Airlines.

Spirit on FLL to BWI sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 684 flights, with a median arrival 4 minutes early.

The national on-time rate over the same period is 77.3%, so Spirit on FLL to BWI runs 7 points behind the country as a whole. Across a thousand flights that is about 72 extra late arrivals.

Key figures

On time

70.1%

Arrivals under 15 minutes late, of 649 completed flights

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

4.68%

National rate is 1.89%

Whole route

71.0%

Every carrier on FLL to BWI, 3,150 flights

These figures cover 684 flights between September 2025 and August 2026. Beyond the headline rate, 12.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Carrier by carrier

Spirit against every carrier on FLL to BWI

Spirit flew 684 of the 3,150 flights on FLL to BWI, about 22% of it. Its 70.1% on time is about level with the route as a whole at 71.0%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Southwest at 73.5% to JetBlue at 47.1%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on FLL to BWI
AirlineFlightsOn timeAvg delayCancelledGrade
Southwest Airlines2,10673.5%58 min2.18%C
Spirit Airlines (this page)68470.1%69 min4.68%C−
Frontier Airlinesthin sample19866.8%88 min4.04%C−
JetBlue Airwaysthin sample16247.1%84 min5.56%F−

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 Spirit runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 47 points, against half a point between the best and worst carrier.

  • 5am–8am154 flights85.8%
  • 8am–11am64 flights96.9%
  • 11am–2pm49 flights85.7%
  • 2pm–5pm144 flights59.1%
  • 5pm–8pm55 flights50.0%
  • 8pm–5am218 flights59.8%

Scale runs 40% to 100%.

The 5pm–8pm window is where this operation falls apart: 50.0% on time, against 96.9% for the 8am–11am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8pm–5am window is the busiest, with 218 flights scheduled in it.

Across the year

Spirit on FLL to BWI through the year

On-time rate by calendar month69J74F49M58A—M—J—J—A88S79O85N52D
Darker means more delays. Figures are on-time percentages.September best, March worst

September is the best month on the calendar at 87.8% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. October was the busiest month here, with 103 flights.

Across the week, Wednesday is the strongest day at 81.5% on time and Sunday the weakest at 56.0%, a spread of 26 points.

On-time rate by day of the week66.0Mon72.1Tue81.5Wed76.2Thu67.0Fri72.9Sat56.0Sun
Monday: 66.0 percent on time. Tuesday: 72.1 percent on time. Wednesday: 81.5 percent on time. Thursday: 76.2 percent on time. Friday: 67.0 percent on time. Saturday: 72.9 percent on time. Sunday: 56.0 percent on time

Arrival by arrival

How late Spirit on FLL to BWI runs when it is late

The 194 late arrivals split 49 under half an hour, 64 between 30 and 60 minutes, and 81 an hour or more.

  • 15+ min early153 flights23.6%
  • Within 15 min302 flights46.5%
  • 15–29 min late49 flights7.6%
  • 30–59 min late64 flights9.9%
  • 1–2 hours late50 flights7.7%
  • 2+ hours late31 flights4.8%

Scale runs 0% to 100%.

Share of 649 completed flights by arrival against schedule.

38 of 222 late departures made up the time and arrived on time, 17% of them. Only 10 left on time and still arrived late.

The worst days

Worst days for Spirit on FLL to BWI

The latest arrival of the period was on 12 March 2026, 4 hours 17 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.

The latest arrivals of Spirit on FLL to BWI in the period
DateArrived late byLargest filed cause
12 March 20264 hours 17 minutesCarrier
19 February 20264 hours 5 minutesCarrier
11 January 20263 hours 59 minutesLate-arriving aircraft
19 December 20253 hours 55 minutesCarrier
23 April 20263 hours 49 minutesLate-arriving aircraft

Delay causes

Why Spirit runs late on this route

Carrier accounts for 49% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.

  • Carrier
    49%
  • Late-arriving aircraft
    32%
  • National Airspace System
    16%
  • Extreme weather
    2%
  • Security
    1%

The largest share of delay minutes, 49%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 6,603 of the 13,000 delay minutes reported here. The split is drawn from 13,378 reported delay minutes.

The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 96.9% on time here.

Cancellations run at 4.68%, 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

12.5% 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 78.0% on time across 687 flights, 8 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 8 points of difference.

One caution: this is a thin sample. 684 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 Spirit on FLL to BWI

Put together: the delay figures matter less here than the 4.68% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 649 completed flights over 12 months sit behind that.

Related

Where to go next

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.