ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
FLL → ORD
Fort Lauderdale to Chicago: 3,414 nonstop flights a year
On time (12 months)
69%
Cancelled
1.7%
avg delay 28 min
Best time to leave
Before 9 AM
83% on time vs 51% 3 to 6 PM
Most reliable airline
United
74% chance on time
Lowest nonstop fare seen in the next two months: $43 (Frontier 2206 on 2026-11-12). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
17 nonstop, 25 with 1 connection. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.
Best overall#1 · Nonstop · 3h 37m
6:53 AM → 9:30 AM
87%
arrive on time
88% on time · 1.2% cancel6:53 AM FLL → 9:30 AM ORD3h 37m
American 3101
Boeing 737-800 · 9–25 yrs oldFind American 3101 fares Opens this date on Aviasales#2 · Nonstop · 3h 33m
9:00 AM → 11:33 AM
87%
arrive on time
88% on time · 1.1% cancel9:00 AM FLL → 11:33 AM ORD3h 33m
United 2298
Boeing 737-900ER or Airbus A321neo · 1–17 yrs oldFind United 2298 fares Opens this date on Aviasales#3 · Nonstop · 3h 34m
12:31 PM → 3:05 PM
85%
arrive on time
85% on time · 0.3% cancel12:31 PM FLL → 3:05 PM ORD3h 34m
United 1755
Airbus A321neo · 0–3 yrs oldFind United 1755 fares Opens this date on Aviasales#4 · Nonstop · 3h 33m
7:00 AM → 9:33 AM
84%
arrive on time
85% on time · 1.1% cancel7:00 AM FLL → 9:33 AM ORD3h 33m
United 752 · also flew as 2860
Boeing 737-900ER or 737 MAX 9 · 1–18 yrs oldFind United 752 fares Opens this date on Aviasales#5 · Nonstop · 3h 32m
12:23 PM → 2:55 PM
83%
arrive on time
84% on time · 1.3% cancel12:23 PM FLL → 2:55 PM ORD3h 32m
United 534
Airbus A321neo · 1–3 yrs oldFind United 534 fares Opens this date on Aviasales#6 · Nonstop · 3h 29m
12:56 PM → 3:25 PM
81%
arrive on time
82% on time · 0.7% cancel12:56 PM FLL → 3:25 PM ORD3h 29m
United 2703
Airbus A321neo · 1–3 yrs oldFind United 2703 fares Opens this date on Aviasales#7 · Nonstop · 3h 33m
12:15 PM → 2:48 PM
77%
arrive on time
79% on time · 1.5% cancel12:15 PM FLL → 2:48 PM ORD3h 33m
American 811
Boeing 737-800 · 9–27 yrs oldFind American 811 fares Opens this date on Aviasales#8 · Nonstop · 3h 34m
2:29 PM → 5:03 PM
76%
arrive on time
76% on time · 0.5% cancel2:29 PM FLL → 5:03 PM ORD3h 34m
United 1851
Airbus A321neo · 1–8 yrs oldFind United 1851 fares Opens this date on Aviasales#9 · 1 connection · 6h 00m · one ticket (American)
7:00 AM → 12:00 PM
91%
connections made
83%
arrive on time
94% on time · 1.5% cancel7:00 AM FLL → 9:16 AM CLT2h 16m
American 1982
Boeing 737-800 · 9–26 yrs oldConnect in CLT · 1h 18m · 95% chance to make it · same ticket: the airline rebooks you if you miss it92% on time · 2.4% cancel10:34 AM CLT → 12:00 PM ORD2h 26m
Republic 3509 · sold as American Eagle · also flew as 3702
Embraer E175 · 2–11 yrs oldFind this American trip Look for American 1982 + Republic 3509 on Aviasales#10 · Nonstop · 3h 30m
11:45 AM → 2:15 PM
73%
arrive on time
74% on time · 1.2% cancel11:45 AM FLL → 2:15 PM ORD3h 30m
American 2107
Boeing 737-800 · 10–25 yrs oldFind American 2107 fares Opens this date on Aviasales
Aircraft and ages come from the planes each flight number actually flew in the last 3 months of data (FAA registry build years); airlines can swap planes.
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines74%
1,448 flights · 75% on time as flown · 0.8% cancel
- American Airlines70%
827 flights · 70% on time as flown · 1.6% cancel
- Southwest Airlines62%
33 flights · 39% on time as flown · 2.0% cancel
- Spirit Airlines61%
985 flights · 62% on time as flown · 2.9% cancel
- Frontier Airlines59%
121 flights · 53% on time as flown · 2.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM83%
788 flights · avg delay 13 min
- 9 AM to noon82%
320 flights · avg delay 12 min
- Noon to 3 PM74%
956 flights · avg delay 27 min
- 3 to 6 PM51%
746 flights · avg delay 38 min
- 6 to 9 PM58%
350 flights · avg delay 49 min
- After 9 PM56%
254 flights · avg delay 39 min
Best day: Tuesday (76%). Worst: Sunday (65%).
Smarter routing
Nearby airports that run more on time
MIA → MDW 72% chance on time
Miami International Airport to Chicago Midway International Airport · 520 flights a year · 36 mi from your airports · yours: 68%
FLL → MDW 70% chance on time
Fort Lauderdale Hollywood International Airport to Chicago Midway International Airport · 1,133 flights a year · 15 mi from your airports · yours: 68%
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