Route on-time record
MHT to MDW: most on-time flights and the best time to fly
Manchester (Manchester-Boston Regional Airport) to Chicago (Chicago Midway International Airport). 512 nonstop flights in Jun 2025 to May 2026, 87% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was Southwest 4948 at 7:25 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MHT → MDW
Manchester to Chicago: 512 nonstop flights a year
On time (12 months)
87%
Cancelled
1.0%
avg delay 9 min
Best time to leave
Before 9 AM
94% on time vs 63% 6 to 9 PM
Most reliable airline
Southwest
87% chance on time
Lowest nonstop fare seen in the next two months: $489 (Southwest 4369 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 4948
7:25 AM → 8:55 AM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 4352, 4021; its record covers all of them.
89%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 89% of the time (91 flights, Jun 2025 to May 2026).
- Never cancelled in 91 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; 6 to 9 PM: 63%).
- Lands inside MDW's trouble window: 50% of its 30 ground stops and delay programs started between 7 AM and 1 PM.
Moderate track record · 91 flights
Find Southwest 4948 fares Opens this date on Aviasales#2 · Southwest 3418
7:10 PM → 8:40 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-29.
75%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 74% of the time (23 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 63% on time; Before 9 AM: 94%).
- 56% 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 3418 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines87%
512 flights · 87% on time as flown · 1.0% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
322 flights · avg delay 4 min
- 3 to 6 PM86%
98 flights · avg delay 9 min
- 6 to 9 PM63%
85 flights · avg delay 30 min
Best day: Wednesday (94%). Worst: Friday (80%).
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 aircraft50%
- Air traffic control and airport volume33%
- Airline (crew, maintenance, boarding)15%
- 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
MHT to MDW questions
- What time of day is best to fly MHT to MDW?
- Before 9 AM: 94% of flights arrived on time, against 63% for departures 6 to 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 MHT to MDW?
- Southwest, with a season-adjusted 87% chance of operating and arriving on time over 512 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 MHT to MDW?
- July (74% on time); the best was November (97%), 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 MHT
- MDW to MHT (return)
- MHT to BWI 87%
- MHT to DCA 70%
- MHT to CLT 80%
- MHT to MCO 77%
- MHT to ORD 78%
Live status: FAA delays and ground stops