Route
BWI → CHS
Baltimore/Washington International Thurgood Marshall Airport Charleston International Airport
How punctual is this route?
- On-time arrivals
- 79.7%
- Less than 15 minutes late
- Cancelled
- 1.8%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,230
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Airline (crew, maintenance, cleaning) 36%
- Air traffic control & airport 12%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 85.6% | 90 |
| October 2025 | 80.5% | 118 |
| November 2025 | 82.2% | 103 |
| December 2025 | 81.0% | 104 |
| January 2026 | 92.1% | 96 |
| February 2026 | 90.0% | 81 |
| March 2026 | 76.9% | 105 |
| April 2026 | 85.3% | 109 |
| May 2026 | 76.8% | 112 |
| June 2026 | 75.5% | 107 |
| July 2026 | 64.4% | 110 |
| August 2026 | 69.6% | 95 |
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 | 1,230 | 79.7% | 1.8% | 61 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN899
30% late · 76 flights
-
WN898
12% late · 64 flights
-
WN4622
12% late · 58 flights
-
WN3144
21% late · 57 flights
-
WN184
59% late · 51 flights
-
WN1086
17% late · 48 flights
-
WN473
5% late · 47 flights
-
WN192
15% late · 46 flights
-
WN1336
5% late · 45 flights
-
WN2936
7% late · 42 flights
-
WN297
12% late · 42 flights
-
WN1291
25% late · 40 flights
-
WN2152
38% late · 36 flights
-
WN1629
17% late · 35 flights
-
WN1286
30% late · 33 flights
-
WN1448
9% late · 33 flights
-
WN1501
40% late · 30 flights
-
WN3817
13% late · 30 flights
-
WN900
37% late · 27 flights
-
WN1912
12% late · 26 flights
-
WN1891
17% late · 24 flights
-
WN2795
17% late · 23 flights
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