Route
BWI → SAT
Baltimore/Washington International Thurgood Marshall Airport San Antonio International Airport
How punctual is this route?
- On-time arrivals
- 74.5%
- Less than 15 minutes late
- Cancelled
- 1.6%
- Of scheduled flights
- Average delay when late
- 62 min
- Flights arriving 15+ minutes late
- Flights tracked
- 731
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 47%
- Airline (crew, maintenance, cleaning) 31%
- Air traffic control & airport 18%
- Extreme weather 3%
- Security 1%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 85.5% | 69 |
| October 2025 | 80.0% | 75 |
| November 2025 | 88.3% | 61 |
| December 2025 | 75.7% | 71 |
| January 2026 | 75.7% | 39 |
| February 2026 | 90.6% | 35 |
| March 2026 | 82.4% | 51 |
| April 2026 | 76.9% | 52 |
| May 2026 | 59.6% | 52 |
| June 2026 | 55.4% | 75 |
| July 2026 | 72.7% | 81 |
| August 2026 | 62.3% | 70 |
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 | 731 | 74.5% | 1.6% | 62 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN1904
23% late · 64 flights
-
WN461
16% late · 59 flights
-
WN2570
43% late · 58 flights
-
WN546
17% late · 42 flights
-
WN2133
15% late · 33 flights
-
WN1456
13% late · 31 flights
-
WN948
16% late · 31 flights
-
WN3015
22% late · 28 flights
-
WN1090
15% late · 27 flights
-
WN1091
33% late · 27 flights
-
WN1092
50% late · 27 flights
-
WN1766
20% late · 25 flights
-
WN1921
13% late · 23 flights
-
WN716
26% late · 23 flights
-
WN1078
30% late · 20 flights
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