Most delayed flights from GSP: every route ranked

13 regularly flown nonstop routes from Greenville-Spartanburg International Airport, worst on-time record first (Aug 2025 – Jul 2026). Routes with fewer than 360 flights in the period are listed separately.

#	Destination	On time	Cancelled	Avg delay	Airlines	Flights
1	GSP → DCA Washington, VA	66%	4.7%	30 min	4	1,017
2	GSP → LGA New York, NY	75%	5.4%	22 min	1	927
3	GSP → DFW Dallas/Fort Worth, TX	76%	2.9%	24 min	3	1,177
4	GSP → ORD Chicago, IL	77%	4.0%	17 min	6	1,813
5	GSP → MIA Miami, FL	80%	1.2%	13 min	2	726
6	GSP → DEN Denver, CO	81%	1.1%	14 min	3	366
7	GSP → BNA Nashville, TN	83%	0.4%	8 min	1	668
8	GSP → CLT Charlotte, NC	84%	2.5%	19 min	3	1,504
9	GSP → EWR Newark, NJ	86%	4.6%	12 min	1	776
10	GSP → DTW Detroit, MI	87%	2.7%	14 min	2	550
11	GSP → PHL Philadelphia, PA	89%	2.0%	11 min	2	441
12	GSP → BWI Baltimore, MD	90%	1.5%	7 min	1	719
13	GSP → ATL Atlanta, GA	90%	1.6%	9 min	1	2,819

Less frequent routes

Too few flights for a reliable ranking.

Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.