Route
ORD → GSP
Chicago O'Hare International Airport Greenville-Spartanburg International Airport
How punctual is this route?
- On-time arrivals
- 74.2%
- Less than 15 minutes late
- Cancelled
- 3.6%
- Of scheduled flights
- Average delay when late
- 76 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,872
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 40%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 24%
- Extreme weather 9%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 80.3% | 128 |
| October 2025 | 69.4% | 173 |
| November 2025 | 73.1% | 165 |
| December 2025 | 65.7% | 140 |
| January 2026 | 64.2% | 120 |
| February 2026 | 72.1% | 122 |
| March 2026 | 69.1% | 150 |
| April 2026 | 84.3% | 143 |
| May 2026 | 80.1% | 185 |
| June 2026 | 77.1% | 156 |
| July 2026 | 75.1% | 186 |
| August 2026 | 75.8% | 204 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Envoy Air | 865 | 78.3% | 3.6% | 76 min |
| SkyWest Airlines | 630 | 69.0% | 3.3% | 71 min |
| Republic Airways | 255 | 81.1% | 4.3% | 81 min |
| OH | 64 | 54.0% | 0.0% | 125 min |
| American Airlines | 54 | 59.2% | 9.3% | 56 min |
| United Airlines | 4 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
MQ3731
20% late · 171 flights
-
MQ3918
17% late · 147 flights
-
OO5403
25% late · 136 flights
-
MQ4242
27% late · 107 flights
-
OO5712
24% late · 104 flights
-
OO5330
27% late · 78 flights
-
MQ3556
5% late · 76 flights
-
MQ3559
24% late · 76 flights
-
OO5865
54% late · 76 flights
-
MQ4145
29% late · 65 flights
-
MQ4154
25% late · 60 flights
-
YX3460
24% late · 52 flights
-
YX3514
31% late · 50 flights
-
OO5275
44% late · 46 flights
-
MQ3607
35% late · 34 flights
-
OH5072
36% late · 33 flights
-
MQ3994
35% late · 32 flights
-
YX3517
13% late · 32 flights
-
MQ3492
36% late · 28 flights
-
MQ4160
4% late · 28 flights
-
OO5439
41% late · 28 flights
-
MQ3827
23% late · 27 flights
-
OH5230
59% late · 27 flights
-
YX3478
16% late · 26 flights
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