Best Time to Fly MHT to BWI: On-Time Stats by Hour & Airline
Manchester Boston Regional → Baltimore/Washington International Thurgood Marshall
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 88.7% of Manchester (MHT) to Baltimore (BWI) flights arrived on time (1,746 scheduled flights). That is 11.1 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
November has been the best month (95% on time) and Monday the weakest day of the week (84%).
0.7% of flights were cancelled, versus 1.8% nationally.
MHT 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 | 88.7% | 58 min | 0.7% | 1,746 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MHT to BWI
On-time arrival % by scheduled departure hour (local time), 3,336 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 95.0% | 0.9% | 580 |
| 6am–7am | 98.0% | 0.7% | 147 |
| 7am–8am | 94.9% | 1.3% | 159 |
| 8am–9am | 93.0% | 1.5% | 202 |
| 9am–10am | 94.7% | 0.4% | 264 |
| 10am–11am | 92.3% | 0.0% | 155 |
| 11am–12pm | 88.0% | 0.0% | 192 |
| 12pm–1pm | 86.7% | 0.3% | 324 |
| 1pm–2pm | 80.5% | 0.8% | 264 |
| 2pm–3pm | 84.0% | 1.3% | 158 |
| 3pm–4pm | 86.9% | 0.7% | 309 |
| 4pm–5pm | 86.2% | 0.5% | 219 |
| 5pm–6pm | 72.6% | 1.2% | 241 |
| 6pm–7pm | 84.5% | 0.9% | 111 |
| 7pm–8pm | Limited data | 11 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MHT 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) | 92.4% | +2.4 pts | 0.0% | 66 |
| Christmas & New Year (Dec 20 - Jan 3) | 84.2% | -5.7 pts | 0.0% | 146 |
| Summer peak (Jun 15 - Aug 15) | 82.9% | -7.1 pts | 1.1% | 570 |
| All other days | 90.0% | — | 0.7% | 2,554 |
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).