GSP to ORD flight delays & on-time performance
Nonstop flights from Greenville-Spartanburg International Airport to Chicago O'Hare International Airport · 577 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at GSP or ORD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Greer (GSP) to Chicago (ORD) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 4% were cancelled, and 8% arrived an hour or more late.
- PSA Airlines was the most punctual airline here (87% on time); SkyWest Airlines was the least (73%).
- Departures scheduled around 9am did best (90% on time); around 5pm did worst (58%).
- Wednesday was the most reliable day to fly (82% on time) and Sunday the least (73%).
- The largest source of delay minutes was air traffic control & airport congestion (31%).
Which airline is most on time from GSP 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 | 100% | 0.0% | 0 min | 0.0% | 1 |
| PSA AirlinesRegional airline operating American Eagle flights. | 87% | 3.1% | 8 min | 3.3% | 96 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 86% | 3.5% | 10 min | 4.5% | 256 |
| American Airlines | 78% | 9.3% | 14 min | 8.2% | 54 |
| Envoy AirRegional airline operating American Eagle flights. | 75% | 3.7% | 16 min | 7.6% | 813 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 73% | 4.2% | 23 min | 10.2% | 593 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am87%259 flights
- 7am83%266 flights
- 8am73%49 flights
- 9am90%136 flights
- 10am81%114 flights
- 11am84%296 flights
- 12pm79%44 flights
- 3pm82%23 flights
- 5pm58%350 flights
- 6pm63%57 flights
- 7pm64%37 flights
- 8pm67%171 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday81%6.8% cancelled
- Tuesday75%2.4% cancelled
- Wednesday82%2.0% cancelled
- Thursday75%1.5% cancelled
- Friday73%2.6% cancelled
- Saturday77%6.2% cancelled
- Sunday73%6.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion31%
- Late-arriving aircraft30%
- Airline (crew, maintenance, cleaning, fueling)28%
- Extreme weather10%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather71%
- Air traffic control & airport congestion29%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
GSP to ORD: common questions
- How often are GSP 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 Greer to Chicago cancelled?
- 4.0% of scheduled flights were cancelled (72 of 1,813).
- How long are typical delays?
- Across all flights the average arrival delay was 17 min (early arrivals count as zero). Flights that were late arrived 68 min behind schedule on average, and 7.8% of flights were an hour or more late.
- How long is taxi time at GSP?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ORD to GSP — 74% on time
More flights from Greer
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: GSP → ORD, nonstop flights by US airlines that report to the DOT. How we calculate this.