ORD to GSP flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Greenville-Spartanburg International Airport · 577 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or GSP right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (ORD) to Greer (GSP) arrived on time 74% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 4% were cancelled, and 9% arrived an hour or more late.
- Republic Airways was the most punctual airline here (82% on time); PSA Airlines was the least (53%).
- Departures scheduled around 8am did best (87% on time); around 7pm did worst (64%).
- Friday was the most reliable day to fly (76% on time) and Sunday the least (71%).
- The largest source of delay minutes was late-arriving aircraft (41%).
Which airline is most on time from ORD to GSP?
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 | 100% | 0.0% | 0 min | 0.0% | 1 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 82% | 5.1% | 14 min | 7.4% | 255 |
| Envoy AirRegional airline operating American Eagle flights. | 78% | 3.6% | 16 min | 7.9% | 816 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 70% | 3.4% | 22 min | 10.1% | 594 |
| American Airlines | 59% | 9.3% | 23 min | 12.2% | 54 |
| PSA AirlinesRegional airline operating American Eagle flights. | 53% | 5.3% | 53 min | 23.6% | 95 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am76%42 flights
- 7am79%64 flights
- 8am87%338 flights
- 10am60%25 flights
- 1pm76%315 flights
- 2pm68%37 flights
- 3pm77%77 flights
- 4pm72%191 flights
- 5pm71%212 flights
- 6pm69%166 flights
- 7pm64%175 flights
- 8pm66%118 flights
- 9pm60%47 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday74%7.9% cancelled
- Tuesday76%3.2% cancelled
- Wednesday72%0.8% cancelled
- Thursday75%1.5% cancelled
- Friday76%2.2% cancelled
- Saturday74%6.3% cancelled
- Sunday71%5.9% 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 aircraft41%
- Airline (crew, maintenance, cleaning, fueling)28%
- Air traffic control & airport congestion23%
- Extreme weather8%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather67%
- Air traffic control & airport congestion32%
- Airline (crew, maintenance, cleaning, fueling)1%
- Security0%
ORD to GSP: common questions
- How often are ORD to GSP flights on time?
- 74% 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 Chicago to Greer cancelled?
- 4.0% of scheduled flights were cancelled (72 of 1,815).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 72 min behind schedule on average, and 9.5% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 29 min taxiing from the gate to takeoff on average.
Related routes
Return trip: GSP to ORD — 77% on time
More flights from Chicago
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → GSP, nonstop flights by US airlines that report to the DOT. How we calculate this.