Route
SAT → BWI
San Antonio International Airport Baltimore/Washington International Thurgood Marshall Airport
How punctual is this route?
- On-time arrivals
- 80.3%
- Less than 15 minutes late
- Cancelled
- 1.5%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 719
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 44%
- Airline (crew, maintenance, cleaning) 29%
- Air traffic control & airport 19%
- Extreme weather 9%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 89.9% | 69 |
| October 2025 | 83.8% | 75 |
| November 2025 | 82.0% | 61 |
| December 2025 | 90.0% | 71 |
| January 2026 | 91.9% | 39 |
| February 2026 | 81.2% | 35 |
| March 2026 | 54.0% | 51 |
| April 2026 | 84.3% | 52 |
| May 2026 | 84.6% | 52 |
| June 2026 | 72.0% | 75 |
| July 2026 | 74.0% | 81 |
| August 2026 | 76.8% | 58 |
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 | 719 | 80.3% | 1.5% | 61 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN714
3% late · 64 flights
-
WN3559
5% late · 61 flights
-
WN1575
9% late · 58 flights
-
WN3561
46% late · 43 flights
-
WN1030
24% late · 42 flights
-
WN1926
50% late · 35 flights
-
WN4391
19% late · 33 flights
-
WN536
3% late · 33 flights
-
WN1437
7% late · 31 flights
-
WN2813
23% late · 31 flights
-
WN2664
41% late · 27 flights
-
WN2994
0% late · 24 flights
-
WN3288
83% late · 23 flights
-
WN4231
22% late · 23 flights
-
WN3445
30% late · 22 flights
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