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.
MDW → ORF
Chicago to Norfolk: 568 nonstop flights a year
On time (12 months)
73%
Cancelled
0.9%
avg delay 18 min
Best time to leave
9 AM to noon
83% on time vs 66% 6 to 9 PM
Most reliable airline
Southwest
73% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
4 nonstop, 36 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 00m
7:50 AM → 10:50 AM
79%
arrive on time
80% on time · 0.8% cancel7:50 AM MDW → 10:50 AM ORF2h 00m
Southwest 508
Boeing 737-800 or 737 MAX 8 · 1–12 yrs oldFind Southwest 508 fares Opens this date on Aviasales#2 · Nonstop · 1h 55m
1:30 PM → 4:25 PM
75%
arrive on time
75% on time · 0.8% cancel1:30 PM MDW → 4:25 PM ORF1h 55m
Southwest 2160
Boeing 737-700 · 16–23 yrs oldFind Southwest 2160 fares Opens this date on Aviasales#3 · Nonstop · 2h 00m
6:05 PM → 9:05 PM
72%
arrive on time
73% on time · 1.4% cancel6:05 PM MDW → 9:05 PM ORF2h 00m
Southwest 3397
Boeing 737-700 · 16–22 yrs oldFind Southwest 3397 fares Opens this date on Aviasales#4 · 1 connection · 4h 55m · one ticket (Southwest)
8:00 AM → 1:55 PM
94%
connections made
82%
arrive on time
94% on time · 1.7% cancel8:00 AM MDW → 9:30 AM BNA1h 30m
Southwest 2003 · also flew as 3815
Boeing 737 MAX 8 or 737-800 · 1–22 yrs oldConnect in BNA · 1h 35m · 97% chance to make it · same ticket: the airline rebooks you if you miss it86% on time · 0.5% cancel11:05 AM BNA → 1:55 PM ORF1h 50m
Southwest 3791
Boeing 737-700 · 16–22 yrs oldFind this Southwest trip Look for Southwest 2003 + Southwest 3791 on Aviasales#5 · 1 connection · 4h 05m · one ticket (Southwest)
6:35 AM → 11:40 AM
88%
connections made
79%
arrive on time
94% on time · 2.2% cancel6:35 AM MDW → 9:30 AM BWI1h 55m
Southwest 3203
Boeing 737-700 · 4–22 yrs oldConnect in BWI · 1h 10m · 91% chance to make it · same ticket: the airline rebooks you if you miss it90% on time · 1.1% cancel10:40 AM BWI → 11:40 AM ORF1h 00m
Southwest 367
Boeing 737-700 · 4–24 yrs oldFind this Southwest trip Look for Southwest 3203 + Southwest 367 on Aviasales#6 · Nonstop · 2h 00m
7:00 PM → 10:00 PM
68%
arrive on time
68% on time · 0.7% cancel7:00 PM MDW → 10:00 PM ORF2h 00m
Southwest 3333
Boeing 737-700 or 737-800 · 4–23 yrs oldFind Southwest 3333 fares Opens this date on Aviasales#7 · 1 connection · 5h 38m · one ticket (Delta)
6:00 AM → 12:34 PM
90%
connections made
79%
arrive on time
89% on time · 3.2% cancel6:00 AM MDW → 9:00 AM ATL2h 00m
Delta 1285
Airbus A320 or Boeing 717 · 24–34 yrs oldConnect in ATL · 2h 04m · 95% chance to make it · same ticket: the airline rebooks you if you miss it88% on time · 2.0% cancel11:04 AM ATL → 12:34 PM ORF1h 34m
Delta 2755
Boeing 737-900ER · 7–13 yrs oldFind this Delta trip Look for Delta 1285 + Delta 2755 on Aviasales#8 · 1 connection · 7h 25m · one ticket (Southwest)
5:30 AM → 1:55 PM
98%
connections made
84%
arrive on time
94% on time · 1.5% cancel5:30 AM MDW → 6:55 AM BNA1h 25m
Southwest 116 · also flew as 683
Boeing 737 MAX 8 or 737-800 · 1–14 yrs oldConnect in BNA · 4h 10m · 100% chance to make it · same ticket: the airline rebooks you if you miss it86% on time · 0.5% cancel11:05 AM BNA → 1:55 PM ORF1h 50m
Southwest 3791
Boeing 737-700 · 16–22 yrs oldFind this Southwest trip Look for Southwest 116 + Southwest 3791 on Aviasales#9 · 1 connection · 5h 25m · one ticket (Southwest)
9:00 AM → 3:25 PM
94%
connections made
77%
arrive on time
87% on time · 2.0% cancel9:00 AM MDW → 11:50 AM BWI1h 50m
Southwest 1266
Boeing 737-800 or 737 MAX 8 · 1–12 yrs oldConnect in BWI · 2h 35m · 98% chance to make it · same ticket: the airline rebooks you if you miss it82% on time · 1.3% cancel2:25 PM BWI → 3:25 PM ORF1h 00m
Southwest 345
Boeing 737-700 · 15–22 yrs oldFind this Southwest trip Look for Southwest 1266 + Southwest 345 on Aviasales#10 · 1 connection · 5h 15m · one ticket (Southwest)
10:35 AM → 4:50 PM
93%
connections made
75%
arrive on time
82% on time · 3.7% cancel10:35 AM MDW → 1:20 PM BWI1h 45m
Southwest 2713
Boeing 737-700 · 19–21 yrs oldConnect in BWI · 2h 30m · 97% chance to make it · same ticket: the airline rebooks you if you miss it81% on time · 1.1% cancel3:50 PM BWI → 4:50 PM ORF1h 00m
Southwest 1242
Boeing 737-700 · 2–22 yrs oldFind this Southwest trip Look for Southwest 2713 + Southwest 1242 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 Airlines73%
568 flights · 73% on time as flown · 0.9% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- 9 AM to noon83%
128 flights · avg delay 10 min
- Noon to 3 PM73%
124 flights · avg delay 18 min
- 3 to 6 PM79%
33 flights · avg delay 10 min
- 6 to 9 PM66%
266 flights · avg delay 23 min
Best day: Saturday (85%). Worst: Sunday (69%).
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