Route Reliability
Pittsburgh → Chicago
PIT–ORD · 413 miles · Pittsburgh International Airport to Chicago O'Hare International Airport
- 79%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 1.9%
- Cancelled
- 3,942
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines81%2,126 flights
- 2.American Airlines77%1,816 flights
What the data says
Morning-you made the right choice.
PIT–ORD flights departing between 3–6 AM arrived on time 97% of the time, versus 60% between 6–9 PM.
Saturday has been the better bet.
A small edge: 82% on time on Saturdays against 76% on Mondays.
United Airlines has a slight edge here.
United Airlines arrived on time 81% of the time on this route; American Airlines managed 77%.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon76%(568 flights)
- Tue80%(549 flights)
- Wed80%(551 flights)
- Thu80%(580 flights)
- Fri81%(563 flights)
- Sat82%(477 flights)
- Sun76%(576 flights)
- 3–6 AM97%(65 flights)
- 6–9 AM89%(1288 flights)
- 9 AM–12 PM86%(723 flights)
- 12–3 PM78%(520 flights)
- 3–6 PM67%(838 flights)
- 6–9 PM60%(427 flights)
- 9 PM–12 AM—(3 flights)
Jun 77% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 77% | 334 |
| July 2025 | 74% | 331 |
| August 2025 | 86% | 332 |
| September 2025 | 83% | 345 |
| October 2025 | 83% | 371 |
| November 2025 | 80% | 317 |
| December 2025 | 71% | 303 |
| January 2026 | 73% | 259 |
| February 2026 | 86% | 256 |
| March 2026 | 71% | 282 |
| April 2026 | 78% | 341 |
| May 2026 | 84% | 393 |
Same trip, other airports
Keep nerding
Based on 3,942 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.