Route
MHT → MDW
Manchester-Boston Regional Airport Chicago Midway International Airport
How punctual is this route?
- On-time arrivals
- 84.1%
- Less than 15 minutes late
- Cancelled
- 0.8%
- Of scheduled flights
- Average delay when late
- 71 min
- Flights arriving 15+ minutes late
- Flights tracked
- 529
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 39%
- Air traffic control & airport 30%
- Airline (crew, maintenance, cleaning) 29%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 98.2% | 56 |
| October 2025 | 94.6% | 57 |
| November 2025 | 96.3% | 28 |
| December 2025 | 72.4% | 29 |
| January 2026 | 92.6% | 27 |
| February 2026 | 96.3% | 27 |
| March 2026 | 93.5% | 31 |
| April 2026 | 86.0% | 43 |
| May 2026 | 83.7% | 49 |
| June 2026 | 78.9% | 58 |
| July 2026 | 78.3% | 62 |
| August 2026 | 56.7% | 62 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Southwest Airlines | 529 | 84.1% | 0.8% | 71 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN2732
7% late · 60 flights
-
WN3804
16% late · 59 flights
-
WN4974
6% late · 53 flights
-
WN4948
10% late · 40 flights
-
WN2920
38% late · 35 flights
-
WN4021
7% late · 28 flights
-
WN4352
15% late · 26 flights
-
WN3823
12% late · 25 flights
-
WN3418
25% late · 24 flights
-
WN634
75% late · 24 flights
-
WN3754
0% late · 23 flights
-
WN3931
0% late · 22 flights
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