Route
BWI → GSP
Baltimore/Washington International Thurgood Marshall Airport Greenville-Spartanburg International Airport
How punctual is this route?
- On-time arrivals
- 80.5%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 65 min
- Flights arriving 15+ minutes late
- Flights tracked
- 720
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 43%
- Airline (crew, maintenance, cleaning) 37%
- Air traffic control & airport 13%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 91.7% | 60 |
| October 2025 | 87.9% | 58 |
| November 2025 | 89.3% | 56 |
| December 2025 | 70.0% | 60 |
| January 2026 | 91.1% | 62 |
| February 2026 | 81.8% | 56 |
| March 2026 | 80.6% | 62 |
| April 2026 | 86.7% | 60 |
| May 2026 | 82.3% | 62 |
| June 2026 | 67.8% | 60 |
| July 2026 | 66.1% | 62 |
| August 2026 | 71.7% | 62 |
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 |
|---|---|---|---|---|
| Southwest Airlines | 720 | 80.5% | 1.8% | 65 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN4574
5% late · 58 flights
-
WN1143
25% late · 57 flights
-
WN1350
8% late · 50 flights
-
WN2605
23% late · 47 flights
-
WN186
20% late · 45 flights
-
WN4437
43% late · 45 flights
-
WN2759
21% late · 42 flights
-
WN952
39% late · 36 flights
-
WN1327
27% late · 33 flights
-
WN1517
6% late · 33 flights
-
WN1727
13% late · 31 flights
-
WN2352
16% late · 31 flights
-
WN3281
3% late · 31 flights
Reviews
No reviews yet. Be the first to review this route.