Route Reliability
Las Vegas → Chicago
LAS–MDW · 1,521 miles · Harry Reid International Airport to Chicago Midway International Airport
- 79%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0.9%
- Cancelled
- 2,397
- Flights in the data
Data through May 2026.
Airlines on this route
- Southwest Airlines78% on time · 2,380 flights
- Frontier Airlines92% on time · 15 flights
- Allegiant Air50% on time · 2 flights
Too little history on this route to call a winner. We rank airlines only after 100 flights each.
What the data says
Morning-you made the right choice.
LAS–MDW flights departing between 3–6 AM arrived on time 96% of the time, versus 58% between 6–9 PM.
Skip Thursday if you can.
LAS–MDW flights arrived on time 84% of the time on Saturdays. On Thursdays: 71%.
Slipping a little lately.
LAS–MDW flights arrived on time 75% of the time over the last three months in the data, compared with 79% in the three months before that.
Flights on this route
The breakdown
- Mon79%(363 flights)
- Tue79%(338 flights)
- Wed83%(339 flights)
- Thu71%(351 flights)
- Fri76%(347 flights)
- Sat84%(260 flights)
- Sun79%(362 flights)
- 3–6 AM96%(196 flights)
- 6–9 AM90%(486 flights)
- 9 AM–12 PM81%(400 flights)
- 12–3 PM69%(335 flights)
- 3–6 PM63%(397 flights)
- 6–9 PM58%(185 flights)
- 9 PM–12 AM87%(361 flights)
Jun 81% → May 74% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 81% | 247 |
| July 2025 | 73% | 247 |
| August 2025 | 84% | 212 |
| September 2025 | 83% | 211 |
| October 2025 | 78% | 209 |
| November 2025 | 82% | 171 |
| December 2025 | 80% | 185 |
| January 2026 | 78% | 161 |
| February 2026 | 81% | 141 |
| March 2026 | 70% | 190 |
| April 2026 | 81% | 188 |
| May 2026 | 74% | 198 |
Same trip, other airports
Keep nerding
Based on 2,397 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.