Historical on-time performance
Boston to Fort Lauderdale
1,237 miData through Dec 2025Source: US DOT · BTS
Flights on BOS–FLL arrive on time 67% of the time over the last 12 months.
On-time rate67%arrived within 15 min
p90 delay75 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights
based on 3,454 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Delta Air LinesOn-time68%Medianon timep9070 minCancel1.3%Flights848
- JetBlue AirwaysOn-time65%Medianon timep9075 minCancel1.9%Flights1,865
- Spirit AirlinesOn-time69%Medianon timep9080 minCancel1.5%Flights741
Why flights run late
Delay causes
- Airline27%
- Weather3%
- Air traffic (NAS)35%
- Late aircraft34%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BOS → FLL
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 78% on time.
- Mornings78% on time · p90 35 min · 3,558 flights
- Middays67% on time · p90 75 min · 1,597 flights
- Afternoons61% on time · p90 90 min · 2,069 flights
- Evenings58% on time · p90 105 min · 1,396 flights
- Overnights50% on time · p90 115 min · 944 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 60% to 74% on time.
- Tuesdays74% on time · p90 45 min · 1,305 flights
- Wednesdays73% on time · p90 50 min · 1,307 flights
- Saturdays67% on time · p90 85 min · 1,327 flights
- Fridays66% on time · p90 60 min · 1,396 flights
- Thursdays65% on time · p90 80 min · 1,385 flights
- Mondays65% on time · p90 80 min · 1,432 flights
- Sundays60% on time · p90 110 min · 1,412 flights
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