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.
ORF → MDW
Norfolk to Chicago: 568 nonstop flights a year
On time (12 months)
81%
Cancelled
1.4%
avg delay 13 min
Best time to leave
Before 9 AM
94% on time vs 60% 6 to 9 PM
Most reliable airline
Southwest
80% chance on time
Lowest nonstop fare seen in the next two months: $206 (Southwest 3335 on 2026-11-12). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
3 nonstop, 37 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 · 2h 10m
8:05 AM → 9:15 AM
87%
arrive on time
88% on time · 1.2% cancel8:05 AM ORF → 9:15 AM MDW2h 10m
Southwest 3696
Boeing 737-700 · 9–20 yrs oldFind Southwest 3696 fares Opens this date on Aviasales#2 · 1 connection · 4h 45m · one ticket (Southwest)
6:05 AM → 9:50 AM
94%
connections made
80%
arrive on time
97% on time · 1.2% cancel6:05 AM ORF → 7:05 AM BWI1h 00m
Southwest 3692
Boeing 737-700 · 16–23 yrs oldConnect in BWI · 1h 30m · 97% chance to make it · same ticket: the airline rebooks you if you miss it85% on time · 1.8% cancel8:35 AM BWI → 9:50 AM MDW2h 15m
Southwest 4014
Boeing 737-800 or 737 MAX 8 · 2–11 yrs oldFind this Southwest trip Look for Southwest 3692 + Southwest 4014 on Aviasales#3 · Nonstop · 2h 10m
6:25 PM → 7:35 PM
70%
arrive on time
71% on time · 1.2% cancel6:25 PM ORF → 7:35 PM MDW2h 10m
Southwest 549 · also flew as 2801
Boeing 737-700 or 737 MAX 8 · 1–22 yrs oldFind Southwest 549 fares Opens this date on Aviasales#4 · 1 connection · 4h 55m · one ticket (Southwest)
5:55 AM → 9:50 AM
93%
connections made
79%
arrive on time
92% on time · 1.9% cancel5:55 AM ORF → 7:00 AM BWI1h 05m
Southwest 4155
Boeing 737-800 or 737 MAX 8 · 3–19 yrs oldConnect in BWI · 1h 35m · 97% chance to make it · same ticket: the airline rebooks you if you miss it85% on time · 1.8% cancel8:35 AM BWI → 9:50 AM MDW2h 15m
Southwest 4014
Boeing 737-800 or 737 MAX 8 · 2–11 yrs oldFind this Southwest trip Look for Southwest 4155 + Southwest 4014 on Aviasales#5 · 1 connection · 4h 55m · one ticket (Southwest)
11:10 AM → 3:05 PM
94%
connections made
78%
arrive on time
85% on time · 1.5% cancel11:10 AM ORF → 12:15 PM BWI1h 05m
Southwest 1189
Boeing 737-700 · 16–23 yrs oldConnect in BWI · 1h 45m · 97% chance to make it · same ticket: the airline rebooks you if you miss it83% on time · 1.7% cancel2:00 PM BWI → 3:05 PM MDW2h 05m
Southwest 2455
Boeing 737 MAX 8 or 737-800 · 2–13 yrs oldFind this Southwest trip Look for Southwest 1189 + Southwest 2455 on Aviasales#6 · 1 connection · 6h 01m · one ticket (Delta)
7:01 AM → 12:02 PM
92%
connections made
80%
arrive on time
91% on time · 1.3% cancel7:01 AM ORF → 9:00 AM ATL1h 59m
Delta 327
Boeing 737-900ER · 7–12 yrs oldConnect in ATL · 2h 05m · 96% chance to make it · same ticket: the airline rebooks you if you miss it87% on time · 3.1% cancel11:05 AM ATL → 12:02 PM MDW1h 57m
Delta 2417
Boeing 717 or Airbus A319 · 22–27 yrs oldFind this Delta trip Look for Delta 327 + Delta 2417 on Aviasales#7 · 1 connection · 5h 06m · one ticket (Delta)
5:50 AM → 9:56 AM
90%
connections made
77%
arrive on time
89% on time · 1.4% cancel5:50 AM ORF → 7:44 AM ATL1h 54m
Delta 2966
Boeing 737-900ER or 757-200 · 8–28 yrs oldConnect in ATL · 1h 15m · 94% chance to make it · same ticket: the airline rebooks you if you miss it85% on time · 2.9% cancel8:59 AM ATL → 9:56 AM MDW1h 57m
Delta 1063
Boeing 717 or Airbus A319 · 22–27 yrs oldFind this Delta trip Look for Delta 2966 + Delta 1063 on Aviasales#8 · 1 connection · 5h 35m · one ticket (Southwest)
6:05 AM → 10:40 AM
96%
connections made
78%
arrive on time
97% on time · 1.2% cancel6:05 AM ORF → 7:05 AM BWI1h 00m
Southwest 3692
Boeing 737-700 · 16–23 yrs oldConnect in BWI · 2h 30m · 99% chance to make it · same ticket: the airline rebooks you if you miss it81% on time · 1.8% cancel9:35 AM BWI → 10:40 AM MDW2h 05m
Southwest 3522
Boeing 737-700 · 18–22 yrs oldFind this Southwest trip Look for Southwest 3692 + Southwest 3522 on Aviasales#9 · 1 connection · 5h 55m · one ticket (Southwest)
11:10 AM → 4:05 PM
96%
connections made
79%
arrive on time
85% on time · 1.5% cancel11:10 AM ORF → 12:15 PM BWI1h 05m
Southwest 1189
Boeing 737-700 · 16–23 yrs oldConnect in BWI · 2h 45m · 99% chance to make it · same ticket: the airline rebooks you if you miss it82% on time · 1.8% cancel3:00 PM BWI → 4:05 PM MDW2h 05m
Southwest 1717 · also flew as 2786
Boeing 737-700 or 737-800 · 0–23 yrs oldFind this Southwest trip Look for Southwest 1189 + Southwest 1717 on Aviasales#10 · 1 connection · 6h 15m · one ticket (Delta)
10:57 AM → 4:12 PM
94%
connections made
80%
arrive on time
92% on time · 2.6% cancel10:57 AM ORF → 12:43 PM ATL1h 47m
Delta 1336
Boeing 737-900ER · 7–13 yrs oldConnect in ATL · 2h 32m · 99% chance to make it · same ticket: the airline rebooks you if you miss it85% on time · 2.0% cancel3:15 PM ATL → 4:12 PM MDW1h 56m
Delta 1728
Airbus A320 · 24–34 yrs oldFind this Delta trip Look for Delta 1336 + Delta 1728 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.
- Southwest Airlines80%
568 flights · 81% on time as flown · 1.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
236 flights · avg delay 4 min
- Noon to 3 PM84%
58 flights · avg delay 11 min
- 3 to 6 PM93%
71 flights · avg delay 7 min
- 6 to 9 PM60%
203 flights · avg delay 27 min
Best day: Monday (84%). Worst: Sunday (77%).
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
