Best Time to Fly PIT to BWI: On-Time Stats by Hour & Airline
Pittsburgh International → Baltimore/Washington International Thurgood Marshall
Data through July 2026 · Last updated October 18, 2026
1,075 flights were scheduled from Pittsburgh (PIT) to Baltimore (BWI) in the last 12 months, and 86.0% of those that flew arrived on time, 8.4 points above the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
November has been the best month (94% on time) and Sunday the weakest day of the week (82%).
1.4% of flights were cancelled, versus 1.8% nationally.
PIT to BWI on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 86.0% | 57 min | 1.4% | 1,075 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PIT to BWI
On-time arrival % by scheduled departure hour (local time), 2,146 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.3% | 0.0% | 279 |
| 6am–7am | 92.4% | 0.7% | 450 |
| 7am–8am | Limited data | 1 | |
| 9am–10am | 100.0% | 0.0% | 44 |
| 10am–11am | 94.7% | 1.0% | 305 |
| 11am–12pm | 91.4% | 1.1% | 94 |
| 12pm–1pm | 90.3% | 0.6% | 166 |
| 1pm–2pm | 87.3% | 1.2% | 80 |
| 2pm–3pm | Limited data | 2 | |
| 3pm–4pm | 79.1% | 0.9% | 112 |
| 4pm–5pm | 78.6% | 2.8% | 216 |
| 5pm–6pm | 61.6% | 3.6% | 221 |
| 6pm–7pm | 67.5% | 4.0% | 176 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PIT to BWI
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 89.2% | +1.8 pts | 0.0% | 37 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.0% | -12.4 pts | 1.2% | 85 |
| Summer peak (Jun 15 - Aug 15) | 79.2% | -8.2 pts | 3.5% | 366 |
| All other days | 87.4% | — | 1.0% | 1,658 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).