Route on-time record
MDW to BHM: most on-time flights and the best time to fly
Chicago (Chicago Midway International Airport) to Birmingham (Birmingham-Shuttlesworth International Airport). 510 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 1.2% were cancelled. The most reliable flight number was Southwest 2215 at 11:10 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MDW → BHM
Chicago to Birmingham: 510 nonstop flights a year
On time (12 months)
77%
Cancelled
1.2%
avg delay 13 min
Best time to leave
Before 9 AM
84% on time vs 62% after 9 PM
Most reliable airline
Southwest
76% chance on time
Lowest nonstop fare seen in the next two months: $310 (Southwest 4470 on 2026-10-26). 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 · Southwest 2215
11:10 AM → 12:50 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 91% of the time (35 flights, Jun 2025 to May 2026).
- Never cancelled in 35 scheduled flights.
- Departs inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
- Short track record (35 flights), so its score leans on the airline's record at this hour.
Limited track record · 35 flights
Find Southwest 2215 fares Opens this date on Aviasales#2 · Southwest 2808
1:05 PM → 2:50 PM1h 45m nonstop
Local times, typical schedule. Last flown 2026-04-04.
77%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 77% of the time (13 flights, Jun 2025 to May 2026).
- Departs outside MDW's trouble window (7 AM to 1 PM, when 50% of its 30 ground stops and delay programs started).
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Southwest 2808 fares Opens this date on Aviasales#3 · Southwest 2407
12:10 PM → 1:50 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-04-06.
72%
chance on time
- On time (history)
- 79%
- Cancelled
- 6.7%
- Avg arrival delay
- 18 min
- Arrived on time 79% of the time (14 flights, Jun 2025 to May 2026).
- Departs inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
- 75% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find Southwest 2407 fares Opens this date on Aviasales#4 · Southwest 505
12:35 PM → 2:15 PM1h 40m nonstop
Local times, typical schedule. Last flown 2026-05-29.
58%
chance on time
- On time (history)
- 35%
- Cancelled
- 0.0%
- Avg arrival delay
- 23 min
- Arrived on time 35% of the time (23 flights, Jun 2025 to May 2026).
- Departs inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
- 54% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 505 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines76%
510 flights · 77% on time as flown · 1.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM84%
123 flights · avg delay 10 min
- 9 AM to noon84%
75 flights · avg delay 8 min
- Noon to 3 PM65%
75 flights · avg delay 15 min
- 6 to 9 PM79%
173 flights · avg delay 12 min
- After 9 PM62%
60 flights · avg delay 27 min
Best day: Saturday (82%). Worst: Friday (72%).
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.
What delays this route
- Late-arriving aircraft56%
- Airline (crew, maintenance, boarding)29%
- Air traffic control and airport volume12%
- Severe weather3%
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
MDW to BHM questions
- What time of day is best to fly MDW to BHM?
- Before 9 AM: 84% of flights arrived on time, against 62% for departures after 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 MDW to BHM?
- Southwest, with a season-adjusted 76% chance of operating and arriving on time over 510 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 MDW to BHM?
- July (60% on time); the best was November (91%), 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 MDW
- BHM to MDW (return)
- MDW to ATL 80%
- MDW to PHX 76%
- MDW to MCO 77%
- MDW to MSP 78%
- MDW to LAS 77%
- MDW to DEN 73%
- MDW to LGA 69%
- MDW to DAL 77%
- MDW to DCA 69%
- MDW to MCI 79%
- MDW to BNA 80%
- MDW to BWI 79%
Live status: FAA delays and ground stops