Route on-time record

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

Boston (Boston Logan International Airport) to Fort Lauderdale (Fort Lauderdale Hollywood International Airport). 3,474 nonstop flights in Jun 2025 to May 2026, 66% arrived within 15 minutes and 3.4% were cancelled. The most reliable flight number was Delta 1401 at 7:10 AM.

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

BOS → FLL

Boston to Fort Lauderdale: 3,474 nonstop flights a year

On time (12 months)

66%

Cancelled

3.4%

avg delay 25 min

Best time to leave

Before 9 AM

80% on time vs 56% 3 to 6 PM

Most reliable airline

Delta

67% chance on time

Check BOS to FLL 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 · Delta 1401
7:10 AM → 10:45 AM3h 33m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
On time (history)
81%
Cancelled
3.3%
Avg arrival delay
14 min
- Arrived on time 81% of the time (291 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (10 of 301).
- Leaves in this route's most on-time window (Before 9 AM: 80% on time; 3 to 6 PM: 56%).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
Strong track record · 291 flights
Find Delta 1401 fares Opens this date on Aviasales
#2 · JetBlue 569
6:00 AM → 9:20 AM3h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
On time (history)
81%
Cancelled
2.8%
Avg arrival delay
9 min
- Arrived on time 81% of the time (317 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 80% on time; 3 to 6 PM: 56%).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
Strong track record · 317 flights
Find JetBlue 569 fares Opens this date on Aviasales
#3 · Spirit 770
5:55 AM → 9:13 AM3h 18m nonstop
Local times, typical schedule. Last flown 2026-05-01.
75%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 94% of the time (17 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 80% on time; 3 to 6 PM: 56%).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 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 770 fares Opens this date on Aviasales
#4 · JetBlue 669
7:59 AM → 11:19 AM3h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
On time (history)
75%
Cancelled
0.0%
Avg arrival delay
15 min
- Arrived on time 75% of the time (12 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 80% on time; 3 to 6 PM: 56%).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
- 53% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 12 flights
Find JetBlue 669 fares Opens this date on Aviasales
#5 · JetBlue 2169
8:30 AM → 11:49 AM3h 20m nonstop
Local times, typical schedule. Last flown 2026-05-18.
70%
chance on time
On time (history)
72%
Cancelled
3.3%
Avg arrival delay
19 min
- Arrived on time 72% of the time (118 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (4 of 123).
- Leaves in this route's most on-time window (Before 9 AM: 80% on time; 3 to 6 PM: 56%).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
Moderate track record · 118 flights
Find JetBlue 2169 fares Opens this date on Aviasales
#6 · JetBlue 469
9:00 AM → 12:34 PM3h 34m nonstop
Local times, typical schedule. Last flown 2026-03-29.
69%
chance on time
On time (history)
70%
Cancelled
4.5%
Avg arrival delay
19 min
- Arrived on time 70% of the time (105 flights, Jun 2025 to May 2026).
- Cancelled 4.5% of the time (5 of 110).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
Moderate track record · 105 flights
Find JetBlue 469 fares Opens this date on Aviasales
#7 · Spirit 1740
5:45 AM → 9:08 AM3h 23m nonstop
Local times, typical schedule. Last flown 2026-04-14.
68%
chance on time
On time (history)
73%
Cancelled
13.4%
Avg arrival delay
24 min
- Arrived on time 73% of the time (84 flights, Jun 2025 to May 2026).
- Cancelled 13.4% of the time (13 of 97).
- Leaves in this route's most on-time window (Before 9 AM: 80% on time; 3 to 6 PM: 56%).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
Moderate track record · 84 flights
Find Spirit 1740 fares Opens this date on Aviasales
#8 · JetBlue 1069
2:25 PM → 4:33 PM3h 30m nonstop
Local times, typical schedule. Last flown 2026-04-27.
66%
chance on time
On time (history)
69%
Cancelled
3.9%
Avg arrival delay
28 min
- Arrived on time 69% of the time (122 flights, Jun 2025 to May 2026).
- Cancelled 3.9% of the time (5 of 127).
- Departs inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
- Lands inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 122 flights
Find JetBlue 1069 fares Opens this date on Aviasales
#9 · JetBlue 69
10:20 AM → 10:20 AM3h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as JetBlue 769; its record covers all of them.
64%
chance on time
On time (history)
65%
Cancelled
3.3%
Avg arrival delay
23 min
- Arrived on time 65% of the time (437 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (15 of 452).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
Strong track record · 437 flights
Find JetBlue 69 fares Opens this date on Aviasales
#10 · Delta 1892
8:20 PM → 11:39 PM3h 19m nonstop
Local times, typical schedule. Last flown 2026-05-06.
63%
chance on time
On time (history)
71%
Cancelled
0.0%
Avg arrival delay
22 min
- Arrived on time 71% of the time (24 flights, Jun 2025 to May 2026).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find Delta 1892 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Delta Air Lines67%
883 flights · 69% on time as flown · 3.0% cancel
JetBlue64%
1,960 flights · 66% on time as flown · 3.1% cancel
Spirit Airlines61%
631 flights · 64% on time as flown · 4.5% cancel

On time by departure time

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

Before 9 AM80%
1,259 flights · avg delay 13 min
9 AM to noon68%
368 flights · avg delay 22 min
Noon to 3 PM63%
277 flights · avg delay 31 min
3 to 6 PM56%
847 flights · avg delay 33 min
6 to 9 PM56%
662 flights · avg delay 37 min

Best day: Tuesday (75%). Worst: Sunday (62%).

Smarter routing

Nearby airports that run more on time

BOS → MIA 75% chance on time
Boston Logan International Airport to Miami International Airport · 3,454 flights a year · 21 mi from your airports · yours: 64%
Rank flights Fares
PVD → PBI 73% chance on time
Rhode Island T. F. Green International Airport to Palm Beach International Airport · 421 flights a year · 91 mi from your airports · yours: 64%
Rank flights Fares
PVD → FLL 67% chance on time
Rhode Island T. F. Green International Airport to Fort Lauderdale Hollywood International Airport · 554 flights a year · 49 mi from your airports · yours: 64%
Rank flights Fares

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.

What delays this route

Late-arriving aircraft35%
Air traffic control and airport volume34%
Airline (crew, maintenance, boarding)29%
Severe weather2%

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

BOS to FLL questions

What time of day is best to fly BOS to FLL?: Before 9 AM: 80% of flights arrived on time, against 56% 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 BOS to FLL?: Delta, with a season-adjusted 67% chance of operating and arriving on time over 883 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 BOS to FLL?: December (60% on time); the best was November (77%), 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 BOS

Live status: FAA delays and ground stops

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