Route Reliability
San Antonio → Chicago
SAT–ORD · 1,041 miles · San Antonio International Airport to Chicago O'Hare International Airport
- 77%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 2.0%
- Cancelled
- 1,963
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines79%957 flights
- 2.American Airlines76%1,006 flights
What the data says
Morning flights do better here.
SAT–ORD flights departing between 3–6 AM arrived on time 91% of the time, versus 61% between 6–9 PM.
Tuesday comes out ahead.
A small edge: 80% on time on Tuesdays against 73% on Sundays.
Not much between United Airlines and American Airlines.
On this route they all land within 76% to 79% on time. Pick on schedule and price.
Slipping a little lately.
SAT–ORD flights arrived on time 76% of the time over the last three months in the data, compared with 81% in the three months before that.
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%(297 flights)
- Tue80%(260 flights)
- Wed78%(258 flights)
- Thu78%(288 flights)
- Fri77%(282 flights)
- Sat80%(230 flights)
- Sun73%(293 flights)
- 3–6 AM91%(53 flights)
- 6–9 AM87%(640 flights)
- 9 AM–12 PM77%(13 flights)
- 12–3 PM78%(667 flights)
- 3–6 PM66%(321 flights)
- 6–9 PM61%(214 flights)
Jun 76% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 166 |
| July 2025 | 69% | 158 |
| August 2025 | 74% | 147 |
| September 2025 | 81% | 150 |
| October 2025 | 79% | 179 |
| November 2025 | 77% | 153 |
| December 2025 | 79% | 158 |
| January 2026 | 80% | 138 |
| February 2026 | 86% | 145 |
| March 2026 | 68% | 170 |
| April 2026 | 76% | 168 |
| May 2026 | 84% | 176 |
Same trip, other airports
Keep nerding
Based on 1,963 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.