Route Reliability
Chicago → Boise
MDW–BOI · 1,448 miles · Chicago Midway International Airport to Boise Airport
86
Pretty Reliable
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 0%
- Cancelled
- 78
- Flights in the data
Data through May 2026.
Southwest Airlines is the only airline in this data on this route, arriving on time 78% of the time across 78 flights. No comparison to make.
What the data says
The 12–3 PM departure wins.
MDW–BOI flights departing between 12–3 PM arrived on time 88% of the time, versus 75% between 9 AM–12 PM.
Sunday scaries are real for this one.
MDW–BOI flights arrived on time 88% of the time on Thursdays and just 67% on Sundays. That gap is worth planning around.
Flights on this route
The breakdown
- Mon77%(17 flights)
- Tue—(0 flights)
- Wed—(0 flights)
- Thu88%(17 flights)
- Fri82%(17 flights)
- Sat—(9 flights)
- Sun67%(18 flights)
- 6–9 AM—(9 flights)
- 9 AM–12 PM75%(28 flights)
- 12–3 PM88%(32 flights)
- 9 PM–12 AM—(9 flights)
82%
Sep
Jun 70% → Sep 82% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 70% | 20 |
| July 2025 | 71% | 21 |
| August 2025 | 90% | 19 |
| September 2025 | 82% | 17 |
Same trip, other airports
Keep nerding
Based on 78 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.