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Route on-time record

FLL to BOS: most on-time flights and the best time to fly

Fort Lauderdale (Fort Lauderdale Hollywood International Airport) to Boston (Boston Logan International Airport). 3,462 nonstop flights in Jun 2025 to May 2026, 66% arrived within 15 minutes and 3.2% were cancelled. The most reliable flight number was JetBlue 690 at 6:00 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

FLL → BOS

Fort Lauderdale to Boston: 3,462 nonstop flights a year

On time (12 months)

66%

Cancelled

3.2%

avg delay 27 min

Best time to leave

Before 9 AM

86% on time vs 52% 3 to 6 PM

Most reliable airline

Delta

69% chance on time

Check FLL to BOS fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · JetBlue 690

    6:00 AM → 9:14 AM3h 15m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as JetBlue 870; its record covers all of them.

    88%

    chance on time

    On time (history)
    90%
    Cancelled
    0.4%
    Avg arrival delay
    5 min
    • Arrived on time 90% of the time (259 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 52%).
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).

    Strong track record · 259 flights

    Find JetBlue 690 fares Opens this date on Aviasales

  2. #2 · Delta 1903

    7:00 AM → 10:19 AM3h 19m nonstop

    Local times, typical schedule. Last flown 2026-05-06. Same departure also flew as Delta 555; its record covers all of them.

    85%

    chance on time

    On time (history)
    91%
    Cancelled
    3.1%
    Avg arrival delay
    4 min
    • Arrived on time 91% of the time (95 flights, Jun 2025 to May 2026).
    • Cancelled 3.1% of the time (3 of 98).
    • Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 52%).
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).

    Moderate track record · 95 flights

    Find Delta 1903 fares Opens this date on Aviasales

  3. #3 · JetBlue 670

    7:00 AM → 10:14 AM3h 14m nonstop

    Local times, typical schedule. Last flown 2026-04-27.

    81%

    chance on time

    On time (history)
    85%
    Cancelled
    3.1%
    Avg arrival delay
    8 min
    • Arrived on time 85% of the time (124 flights, Jun 2025 to May 2026).
    • Cancelled 3.1% of the time (4 of 129).
    • Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 52%).
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).

    Moderate track record · 124 flights

    Find JetBlue 670 fares Opens this date on Aviasales

  4. #4 · Delta 1500

    11:00 AM → 2:20 PM3h 20m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    74%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    7 min
    • Arrived on time 88% of the time (25 flights, Jun 2025 to May 2026).
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
    • Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
    • Short track record (25 flights), so its score leans on the airline's record at this hour.

    Limited track record · 25 flights

    Find Delta 1500 fares Opens this date on Aviasales

  5. #5 · JetBlue 1070

    9:00 AM → 12:14 PM3h 14m nonstop

    Local times, typical schedule. Last flown 2026-05-18.

    73%

    chance on time

    On time (history)
    76%
    Cancelled
    3.2%
    Avg arrival delay
    19 min
    • Arrived on time 76% of the time (182 flights, Jun 2025 to May 2026).
    • Cancelled 3.2% of the time (6 of 188).
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
    • Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.

    Moderate track record · 182 flights

    Find JetBlue 1070 fares Opens this date on Aviasales

  6. #6 · Delta 1401

    11:53 AM → 3:05 PM3h 15m nonstop

    Local times, typical schedule. Last flown 2026-05-06.

    68%

    chance on time

    On time (history)
    69%
    Cancelled
    2.7%
    Avg arrival delay
    24 min
    • Arrived on time 69% of the time (323 flights, Jun 2025 to May 2026).
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
    • Lands inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.

    Strong track record · 323 flights

    Find Delta 1401 fares Opens this date on Aviasales

  7. #7 · Spirit 1740

    7:02 AM → 10:15 AM3h 13m nonstop

    Local times, typical schedule. Last flown 2026-04-28.

    63%

    chance on time

    On time (history)
    36%
    Cancelled
    0.0%
    Avg arrival delay
    28 min
    • Arrived on time 36% of the time (14 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 86% on time; 3 to 6 PM: 52%).
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
    • Short track record (14 flights), so its score leans on the airline's record at this hour.

    Limited track record · 14 flights

    Find Spirit 1740 fares Opens this date on Aviasales

  8. #8 · Spirit 778

    8:43 PM → 11:57 PM3h 14m nonstop

    Local times, typical schedule. Last flown 2026-05-01.

    62%

    chance on time

    On time (history)
    71%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 71% of the time (17 flights, Jun 2025 to May 2026).
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
    • Short track record (17 flights), so its score leans on the airline's record at this hour.

    Limited track record · 17 flights

    Find Spirit 778 fares Opens this date on Aviasales

  9. #9 · Delta 2196

    8:30 PM → 11:53 PM3h 18m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    61%

    chance on time

    On time (history)
    63%
    Cancelled
    2.9%
    Avg arrival delay
    32 min
    • Arrived on time 63% of the time (199 flights, Jun 2025 to May 2026).
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
    • 56% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 199 flights

    Find Delta 2196 fares Opens this date on Aviasales

  10. #10 · JetBlue 1370

    7:30 PM → 10:46 PM3h 16m nonstop

    Local times, typical schedule. Last flown 2026-04-28.

    60%

    chance on time

    On time (history)
    63%
    Cancelled
    0.0%
    Avg arrival delay
    18 min
    • Arrived on time 63% of the time (48 flights, Jun 2025 to May 2026).
    • Never cancelled in 48 scheduled flights.
    • Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
    • Short track record (48 flights), so its score leans on the airline's record at this hour.

    Limited track record · 48 flights

    Find JetBlue 1370 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Delta Air Lines69%

    882 flights · 71% on time as flown · 3.1% cancel

  • JetBlue64%

    1,949 flights · 66% on time as flown · 2.9% cancel

  • Spirit Airlines61%

    631 flights · 62% on time as flown · 4.2% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM86%

    785 flights · avg delay 11 min

  • 9 AM to noon70%

    547 flights · avg delay 23 min

  • Noon to 3 PM58%

    507 flights · avg delay 31 min

  • 3 to 6 PM52%

    446 flights · avg delay 41 min

  • 6 to 9 PM62%

    1,100 flights · avg delay 31 min

Best day: Tuesday (73%). Worst: Sunday (64%).

Smarter routing

Nearby airports that run more on time

  • PBI → PVD 77% chance on time

    Palm Beach International Airport to Rhode Island T. F. Green International Airport · 423 flights a year · 91 mi from your airports · yours: 64%

    Rank flightsFares

  • FLL → ORH 73% chance on time

    Fort Lauderdale Hollywood International Airport to Worcester Regional Airport · 319 flights a year · 45 mi from your airports · yours: 64%

    Rank flightsFares

  • FLL → PVD 69% chance on time

    Fort Lauderdale Hollywood International Airport to Rhode Island T. F. Green International Airport · 553 flights a year · 49 mi from your airports · yours: 64%

    Rank flightsFares

  • MIA → BOS 68% chance on time

    Miami International Airport to Boston Logan International Airport · 3,451 flights a year · 21 mi from your airports · yours: 64%

    Rank flightsFares

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
73
F
67
M
67
A
71
M
70
J
65
J
58
A
63
S
67
O
73
N
78
D
66

What delays this route

  • Late-arriving aircraft36%
  • Air traffic control and airport volume31%
  • Airline (crew, maintenance, boarding)30%
  • Severe weather3%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

FLL to BOS questions

What time of day is best to fly FLL to BOS?
Before 9 AM: 86% of flights arrived on time, against 52% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from FLL to BOS?
Delta, with a season-adjusted 69% chance of operating and arriving on time over 882 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on FLL to BOS?
July (58% on time); the best was November (78%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from FLL

Live status: FAA delays and ground stops