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Route on-time record

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

Fort Myers (Southwest Florida International Airport) to Chicago (Chicago O'Hare International Airport). 3,234 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 1.6% were cancelled. The most reliable flight number was United 2347 at 9:00 AM.

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

RSW → ORD

Fort Myers to Chicago: 3,234 nonstop flights a year

On time (12 months)

76%

Cancelled

1.6%

avg delay 20 min

Best time to leave

Before 9 AM

90% on time vs 60% 6 to 9 PM

Most reliable airline

United

80% chance on time

Check RSW to ORD 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 · United 2347

    9:00 AM → 11:19 AM3h 19m nonstop

    Local times, typical schedule. Last flown 2026-04-29. Same departure also flew as United 2062; its record covers all of them.

    90%

    chance on time

    On time (history)
    90%
    Cancelled
    1.0%
    Avg arrival delay
    6 min
    • Arrived on time 90% of the time (94 flights, Jun 2025 to May 2026).

    Moderate track record · 94 flights

    Find United 2347 fares Opens this date on Aviasales

  2. #2 · American 1809

    8:25 AM → 10:45 AM3h 20m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 2532, 1234; its record covers all of them.

    90%

    chance on time

    On time (history)
    95%
    Cancelled
    3.1%
    Avg arrival delay
    18 min
    • Arrived on time 95% of the time (94 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: 90% on time; 6 to 9 PM: 60%).

    Moderate track record · 94 flights

    Find American 1809 fares Opens this date on Aviasales

  3. #3 · United 1554

    7:03 AM → 9:23 AM3h 20m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2379, 255; its record covers all of them.

    89%

    chance on time

    On time (history)
    91%
    Cancelled
    2.0%
    Avg arrival delay
    3 min
    • Arrived on time 91% of the time (97 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 60%).

    Moderate track record · 97 flights

    Find United 1554 fares Opens this date on Aviasales

  4. #4 · United 2494

    12:30 PM → 2:50 PM3h 20m nonstop

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

    86%

    chance on time

    On time (history)
    87%
    Cancelled
    0.4%
    Avg arrival delay
    9 min
    • Arrived on time 87% of the time (281 flights, Jun 2025 to May 2026).
    • Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.

    Strong track record · 281 flights

    Find United 2494 fares Opens this date on Aviasales

  5. #5 · American 864

    9:45 AM → 12:06 PM3h 21m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    85%

    chance on time

    On time (history)
    86%
    Cancelled
    6.7%
    Avg arrival delay
    5 min
    • Arrived on time 86% of the time (28 flights, Jun 2025 to May 2026).
    • Cancelled 6.7% of the time (2 of 30).
    • Short track record (28 flights), so its score leans on the airline's record at this hour.

    Limited track record · 28 flights

    Find American 864 fares Opens this date on Aviasales

  6. #6 · American 2693

    11:42 AM → 2:07 PM3h 25m nonstop

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

    84%

    chance on time

    On time (history)
    93%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 93% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (44 flights), so its score leans on the airline's record at this hour.

    Limited track record · 44 flights

    Find American 2693 fares Opens this date on Aviasales

  7. #7 · United 714

    10:10 AM → 12:35 PM3h 25m nonstop

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

    83%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 87% of the time (23 flights, Jun 2025 to May 2026).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find United 714 fares Opens this date on Aviasales

  8. #8 · Frontier 3799

    12:17 PM → 2:47 PM3h 30m nonstop

    Local times, typical schedule. Last flown 2026-05-16.

    78%

    chance on time

    On time (history)
    74%
    Cancelled
    3.1%
    Avg arrival delay
    27 min
    • Arrived on time 74% of the time (31 flights, Jun 2025 to May 2026).
    • Cancelled 3.1% of the time (1 of 32).
    • Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (31 flights), so its score leans on the airline's record at this hour.

    Limited track record · 31 flights

    Find Frontier 3799 fares Opens this date on Aviasales

  9. #9 · American 836

    6:15 AM → 8:34 AM3h 19m nonstop

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

    78%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    29 min
    • Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 60%).
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find American 836 fares Opens this date on Aviasales

  10. #10 · Spirit 1604

    7:50 AM → 10:05 AM3h 15m nonstop

    Local times, typical schedule. Last flown 2026-04-14.

    77%

    chance on time

    On time (history)
    78%
    Cancelled
    5.2%
    Avg arrival delay
    12 min
    • Arrived on time 78% of the time (90 flights, Jun 2025 to May 2026).
    • Cancelled 5.2% of the time (5 of 96).
    • Leaves in this route's most on-time window (Before 9 AM: 90% on time; 6 to 9 PM: 60%).

    Moderate track record · 90 flights

    Find Spirit 1604 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines80%

    1,615 flights · 81% on time as flown · 0.8% cancel

  • Frontier Airlines74%

    36 flights · 71% on time as flown · 1.9% cancel

  • American Airlines73%

    1,093 flights · 74% on time as flown · 1.8% cancel

  • Spirit Airlines70%

    388 flights · 71% on time as flown · 4.0% cancel

  • Southwest Airlines63%

    102 flights · 57% on time as flown · 1.8% cancel

On time by departure time

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

  • Before 9 AM90%

    604 flights · avg delay 14 min

  • 9 AM to noon86%

    732 flights · avg delay 10 min

  • Noon to 3 PM80%

    782 flights · avg delay 18 min

  • 3 to 6 PM60%

    718 flights · avg delay 31 min

  • 6 to 9 PM60%

    313 flights · avg delay 34 min

Best day: Monday (80%). Worst: Sunday (76%).

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
78
F
80
M
75
A
80
M
76
J
74
J
69
A
77
S
87
O
88
N
80
D
77

What delays this route

  • Air traffic control and airport volume40%
  • Late-arriving aircraft35%
  • Airline (crew, maintenance, boarding)19%
  • 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

RSW to ORD questions

What time of day is best to fly RSW to ORD?
Before 9 AM: 90% of flights arrived on time, against 60% 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 RSW to ORD?
United, with a season-adjusted 80% chance of operating and arriving on time over 1,615 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 RSW to ORD?
July (69% on time); the best was October (88%), 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 RSW

Live status: FAA delays and ground stops