Route
MDW → LAS
Chicago Midway International Airport Harry Reid International Airport
How punctual is this route?
- On-time arrivals
- 76.1%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 57 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,236
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 40%
- Airline (crew, maintenance, cleaning) 34%
- Air traffic control & airport 22%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 83.3% | 213 |
| October 2025 | 83.3% | 209 |
| November 2025 | 77.4% | 178 |
| December 2025 | 68.1% | 185 |
| January 2026 | 81.9% | 161 |
| February 2026 | 79.0% | 138 |
| March 2026 | 63.9% | 196 |
| April 2026 | 76.8% | 193 |
| May 2026 | 78.6% | 202 |
| June 2026 | 61.5% | 188 |
| July 2026 | 81.9% | 195 |
| August 2026 | 77.8% | 178 |
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 | 2,234 | 76.2% | 0.9% | 57 min |
| Allegiant Air | 2 | 50.0% | 0.0% | 181 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN1182
8% late · 60 flights
-
WN2794
20% late · 60 flights
-
WN3285
4% late · 57 flights
-
WN3422
33% late · 57 flights
-
WN2795
30% late · 52 flights
-
WN2797
46% late · 52 flights
-
WN1987
37% late · 51 flights
-
WN1639
37% late · 50 flights
-
WN4346
18% late · 50 flights
-
WN123
17% late · 47 flights
-
WN1162
33% late · 46 flights
-
WN3635
13% late · 46 flights
-
WN745
25% late · 45 flights
-
WN2699
11% late · 44 flights
-
WN347
14% late · 43 flights
-
WN2793
17% late · 42 flights
-
WN3713
20% late · 42 flights
-
WN3572
72% late · 33 flights
-
WN512
55% late · 33 flights
-
WN875
6% late · 33 flights
-
WN3981
19% late · 32 flights
-
WN2674
10% late · 31 flights
-
WN3375
6% late · 31 flights
-
WN341
6% late · 31 flights
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