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Route on-time record

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

Chicago (Chicago O'Hare International Airport) to Fort Lauderdale (Fort Lauderdale Hollywood International Airport). 3,416 nonstop flights in Jun 2025 to May 2026, 73% arrived within 15 minutes and 2.1% were cancelled. The most reliable flight number was United 1421 at 7:00 AM.

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

ORD → FLL

Chicago to Fort Lauderdale: 3,416 nonstop flights a year

On time (12 months)

73%

Cancelled

2.1%

avg delay 22 min

Best time to leave

Before 9 AM

81% on time vs 58% 6 to 9 PM

Most reliable airline

United

78% chance on time

Check ORD to FLL fares

Lowest nonstop fare seen in the next two months: $43 (Frontier 2205 on 2026-11-01). 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 · United 1421

    7:00 AM → 11:19 AM3h 19m nonstop

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

    90%

    chance on time

    On time (history)
    92%
    Cancelled
    0.6%
    Avg arrival delay
    5 min
    • Arrived on time 92% of the time (338 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 81% on time; 6 to 9 PM: 58%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Strong track record · 338 flights

    Find United 1421 fares Opens this date on Aviasales

  2. #2 · American 2107

    6:50 AM → 10:55 AM3h 05m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    85%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    7 min
    • Arrived on time 91% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 81% on time; 6 to 9 PM: 58%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Limited track record · 44 flights

    Find American 2107 fares Opens this date on Aviasales

  3. #3 · United 2702

    7:30 AM → 11:43 AM3h 13m nonstop

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

    82%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    11 min
    • Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 81% on time; 6 to 9 PM: 58%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find United 2702 fares Opens this date on Aviasales

  4. #4 · United 1486

    8:55 AM → 1:16 PM3h 21m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    82%

    chance on time

    On time (history)
    78%
    Cancelled
    0.0%
    Avg arrival delay
    15 min
    • Arrived on time 78% of the time (45 flights, Jun 2025 to May 2026).
    • Never cancelled in 45 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 81% on time; 6 to 9 PM: 58%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Limited track record · 45 flights

    Find United 1486 fares Opens this date on Aviasales

  5. #5 · United 2066

    12:40 PM → 4:56 PM3h 16m nonstop

    Local times, typical schedule. Last flown 2026-04-29. Same departure also flew as United 1332; its record covers all of them.

    80%

    chance on time

    On time (history)
    80%
    Cancelled
    2.0%
    Avg arrival delay
    27 min
    • Arrived on time 80% of the time (49 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
    • Lands inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
    • 65% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 49 flights

    Find United 2066 fares Opens this date on Aviasales

  6. #6 · United 1634

    3:35 PM → 7:47 PM3h 12m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    78%

    chance on time

    On time (history)
    74%
    Cancelled
    4.2%
    Avg arrival delay
    32 min
    • Arrived on time 74% of the time (23 flights, Jun 2025 to May 2026).
    • Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find United 1634 fares Opens this date on Aviasales

  7. #7 · American 1851

    7:00 AM → 11:06 AM3h 06m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 2185; its record covers all of them.

    77%

    chance on time

    On time (history)
    75%
    Cancelled
    3.2%
    Avg arrival delay
    17 min
    • Arrived on time 75% of the time (60 flights, Jun 2025 to May 2026).
    • Cancelled 3.2% of the time (2 of 63).
    • Leaves in this route's most on-time window (Before 9 AM: 81% on time; 6 to 9 PM: 58%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Moderate track record · 60 flights

    Find American 1851 fares Opens this date on Aviasales

  8. #8 · American 672

    11:50 AM → 3:55 PM3h 05m nonstop

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

    76%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
    • Lands inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find American 672 fares Opens this date on Aviasales

  9. #9 · United 503

    3:55 PM → 8:13 PM3h 18m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    75%

    chance on time

    On time (history)
    76%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 76% of the time (45 flights, Jun 2025 to May 2026).
    • Never cancelled in 45 scheduled flights.
    • Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (45 flights), so its score leans on the airline's record at this hour.

    Limited track record · 45 flights

    Find United 503 fares Opens this date on Aviasales

  10. #10 · Spirit 1986

    5:05 AM → 9:15 AM3h 10m nonstop

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

    75%

    chance on time

    On time (history)
    76%
    Cancelled
    7.0%
    Avg arrival delay
    19 min
    • Arrived on time 76% of the time (119 flights, Jun 2025 to May 2026).
    • Cancelled 7.0% of the time (9 of 128).
    • Leaves in this route's most on-time window (Before 9 AM: 81% on time; 6 to 9 PM: 58%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Moderate track record · 119 flights

    Find Spirit 1986 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines78%

    1,447 flights · 79% on time as flown · 0.9% cancel

  • Southwest Airlines72%

    33 flights · 66% on time as flown · 2.3% cancel

  • American Airlines71%

    827 flights · 72% on time as flown · 1.6% cancel

  • Frontier Airlines69%

    121 flights · 66% on time as flown · 3.0% cancel

  • Spirit Airlines64%

    988 flights · 66% on time as flown · 3.9% cancel

On time by departure time

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

  • Before 9 AM81%

    1,402 flights · avg delay 16 min

  • 9 AM to noon75%

    655 flights · avg delay 18 min

  • Noon to 3 PM70%

    339 flights · avg delay 22 min

  • 3 to 6 PM65%

    541 flights · avg delay 32 min

  • 6 to 9 PM58%

    476 flights · avg delay 34 min

Best day: Tuesday (79%). Worst: Sunday (71%).

Smarter routing

Nearby airports that run more on time

  • MDW → FLL 74% chance on time

    Chicago Midway International Airport to Fort Lauderdale Hollywood International Airport · 1,133 flights a year · 15 mi from your airports · yours: 72%

    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
71
F
79
M
66
A
78
M
73
J
74
J
70
A
74
S
79
O
83
N
79
D
73

What delays this route

  • Late-arriving aircraft37%
  • Air traffic control and airport volume30%
  • Airline (crew, maintenance, boarding)27%
  • Severe weather6%

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

ORD to FLL questions

What time of day is best to fly ORD to FLL?
Before 9 AM: 81% of flights arrived on time, against 58% for departures 6 to 9 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 ORD to FLL?
United, with a season-adjusted 78% chance of operating and arriving on time over 1,447 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 ORD to FLL?
March (66% on time); the best was October (83%), 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 ORD

Live status: FAA delays and ground stops