SAT to ORD flight delays & on-time performance
Nonstop flights from San Antonio International Airport to Chicago O'Hare International Airport · 1,041 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SAT or ORD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Antonio (SAT) to Chicago (ORD) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.3% were cancelled, and 8% arrived an hour or more late.
- United Airlines was the most punctual airline here (80% on time); SkyWest Airlines was the least (67%).
- Departures scheduled around 6am did best (88% on time); around 5pm did worst (65%).
- Tuesday was the most reliable day to fly (81% on time) and Friday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (43%).
Which airline is most on time from SAT to ORD?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| United Airlines | 80% | 1.4% | 18 min | 7.4% | 860 |
| Envoy AirRegional airline operating American Eagle flights. | 77% | 3.1% | 16 min | 8.4% | 383 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 75% | 5.0% | 14 min | 7.4% | 101 |
| American Airlines | 74% | 2.1% | 21 min | 10.5% | 519 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 67% | 5.2% | 20 min | 8.2% | 116 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am87%54 flights
- 6am88%503 flights
- 7am84%154 flights
- 12pm80%60 flights
- 1pm75%374 flights
- 2pm76%242 flights
- 5pm65%338 flights
- 6pm65%221 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%3.0% cancelled
- Tuesday81%1.5% cancelled
- Wednesday77%1.9% cancelled
- Thursday76%1.7% cancelled
- Friday74%2.6% cancelled
- Saturday78%2.6% cancelled
- Sunday76%3.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft43%
- Air traffic control & airport congestion29%
- Airline (crew, maintenance, cleaning, fueling)20%
- Extreme weather8%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather74%
- Air traffic control & airport congestion17%
- Airline (crew, maintenance, cleaning, fueling)9%
- Security0%
SAT to ORD: common questions
- How often are SAT to ORD flights on time?
- 77% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from San Antonio to Chicago cancelled?
- 2.3% of scheduled flights were cancelled (46 of 1,979).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 75 min behind schedule on average, and 8.4% of flights were an hour or more late.
- How long is taxi time at SAT?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ORD to SAT — 74% on time
More flights from San Antonio
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SAT → ORD, nonstop flights by US airlines that report to the DOT. How we calculate this.