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.
SAV → MDW
Savannah to Chicago: 416 nonstop flights a year
On time (12 months)
81%
Cancelled
0.5%
avg delay 14 min
Best time to leave
Before 9 AM
93% on time vs 62% 6 to 9 PM
Most reliable airline
Southwest
80% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
4 nonstop, 38 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 20m
7:25 AM → 8:45 AM
83%
arrive on time
84% on time · 0.5% cancel7:25 AM SAV → 8:45 AM MDW2h 20m
Southwest 2120
Boeing 737 MAX 8 or 737-800 · 3–14 yrs oldFind Southwest 2120 fares Opens this date on Aviasales#2 · Nonstop · 2h 18m
10:45 AM → 12:05 PM
78%
arrive on time
78% on time · 0.5% cancel10:45 AM SAV → 12:05 PM MDW2h 18m
Southwest 3106
Boeing 737-700 · 18–23 yrs oldFind Southwest 3106 fares Opens this date on Aviasales#3 · Nonstop · 2h 20m
6:25 PM → 7:45 PM
77%
arrive on time
78% on time · 0.4% cancel6:25 PM SAV → 7:45 PM MDW2h 20m
Southwest 3385
Boeing 737 MAX 8 · 1–10 yrs oldFind Southwest 3385 fares Opens this date on Aviasales#4 · Nonstop · 2h 15m
5:35 PM → 6:50 PM
75%
arrive on time
75% on time · 0.4% cancel5:35 PM SAV → 6:50 PM MDW2h 15m
Southwest 3569
Boeing 737 MAX 8 · 1–18 yrs oldFind Southwest 3569 fares Opens this date on Aviasales#5 · 1 connection · 4h 50m · one ticket (Delta)
8:12 AM → 12:02 PM
91%
connections made
79%
arrive on time
92% on time · 1.3% cancel8:12 AM SAV → 9:25 AM ATL1h 13m
Delta 686
Boeing 737-900ER · 8–13 yrs oldConnect in ATL · 1h 40m · 95% 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 686 + Delta 2417 on Aviasales#6 · 1 connection · 4h 41m · one ticket (Delta)
12:34 PM → 4:12 PM
92%
connections made
78%
arrive on time
91% on time · 2.1% cancel12:34 PM SAV → 1:41 PM ATL1h 11m
Delta 3054
Boeing 737-800 or 737-900ER · 12–27 yrs oldConnect in ATL · 1h 34m · 96% 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 3054 + Delta 1728 on Aviasales#7 · 1 connection · 5h 28m · one ticket (Delta)
5:30 AM → 9:56 AM
94%
connections made
80%
arrive on time
94% on time · 1.3% cancel5:30 AM SAV → 6:38 AM ATL1h 10m
Delta 3098
Boeing 737-900ER or 737-800 · 8–25 yrs oldConnect in ATL · 2h 21m · 98% 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 3098 + Delta 1063 on Aviasales#8 · 1 connection · 6h 04m · one ticket (Delta)
6:59 AM → 12:02 PM
93%
connections made
81%
arrive on time
91% on time · 2.1% cancel6:59 AM SAV → 8:08 AM ATL1h 10m
Delta 1702
Boeing 737-900ER · 8–13 yrs oldConnect in ATL · 2h 57m · 98% 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 1702 + Delta 2417 on Aviasales#9 · 1 connection · 7h 00m · one ticket (Southwest)
6:10 AM → 12:10 PM
98%
connections made
82%
arrive on time
89% on time · 0.7% cancel6:10 AM SAV → 6:40 AM BNA1h 30m
Southwest 4177
Boeing 737 MAX 8 or 737-800 · 1–12 yrs oldConnect in BNA · 3h 55m · 100% chance to make it · same ticket: the airline rebooks you if you miss it84% on time · 1.1% cancel10:35 AM BNA → 12:10 PM MDW1h 35m
Southwest 4415
Boeing 737-700 · 19–22 yrs oldFind this Southwest trip Look for Southwest 4177 + Southwest 4415 on Aviasales#10 · 1 connection · 6h 45m · one ticket (Southwest)
6:10 AM → 11:55 AM
98%
connections made
81%
arrive on time
89% on time · 0.7% cancel6:10 AM SAV → 6:40 AM BNA1h 30m
Southwest 4177
Boeing 737 MAX 8 or 737-800 · 1–12 yrs oldConnect in BNA · 3h 30m · 99% chance to make it · same ticket: the airline rebooks you if you miss it83% on time · 1.2% cancel10:10 AM BNA → 11:55 AM MDW1h 45m
Southwest 1100
Boeing 737 MAX 8 · 1–13 yrs oldFind this Southwest trip Look for Southwest 4177 + Southwest 1100 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%
394 flights · 80% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
169 flights · avg delay 7 min
- Noon to 3 PM86%
64 flights · avg delay 6 min
- 3 to 6 PM64%
74 flights · avg delay 32 min
- 6 to 9 PM62%
82 flights · avg delay 22 min
Best day: Wednesday (90%). Worst: Sunday (72%).
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