Route
PIT → BWI
Pittsburgh International Airport Baltimore/Washington International Thurgood Marshall Airport
How punctual is this route?
- On-time arrivals
- 85.7%
- Less than 15 minutes late
- Cancelled
- 1.4%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,071
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 53%
- Air traffic control & airport 22%
- Airline (crew, maintenance, cleaning) 21%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 93.0% | 86 |
| October 2025 | 89.2% | 93 |
| November 2025 | 91.9% | 86 |
| December 2025 | 78.9% | 91 |
| January 2026 | 85.4% | 92 |
| February 2026 | 89.7% | 81 |
| March 2026 | 82.4% | 93 |
| April 2026 | 88.9% | 90 |
| May 2026 | 83.9% | 93 |
| June 2026 | 84.1% | 89 |
| July 2026 | 81.2% | 92 |
| August 2026 | 80.2% | 85 |
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 | 1,071 | 85.7% | 1.4% | 63 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
WN1132
3% late · 64 flights
-
WN4417
11% late · 61 flights
-
WN4671
5% late · 59 flights
-
WN2554
7% late · 58 flights
-
WN3251
9% late · 58 flights
-
WN3752
38% late · 58 flights
-
WN4558
4% late · 58 flights
-
WN1550
0% late · 50 flights
-
WN1146
25% late · 42 flights
-
WN1774
19% late · 42 flights
-
WN3033
57% late · 36 flights
-
WN1343
42% late · 33 flights
-
WN2706
3% late · 33 flights
-
WN2063
0% late · 31 flights
-
WN2556
19% late · 31 flights
-
WN280
13% late · 31 flights
-
WN558
0% late · 31 flights
-
WN1471
7% late · 28 flights
-
WN518
7% late · 28 flights
-
WN1637
9% late · 23 flights
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