Best Time to Fly IND to BWI: On-Time Stats by Hour & Airline
Indianapolis International → Baltimore/Washington International Thurgood Marshall
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 85.9% of Indianapolis (IND) to Baltimore (BWI) flights arrived on time (1,216 scheduled flights). That is 8.2 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (90% on time) and July the worst month (79%).
The cancellation rate was 1.4% (US average 1.8%).
IND 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 | 85.9% | 53 min | 1.4% | 1,216 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IND to BWI
On-time arrival % by scheduled departure hour (local time), 2,446 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.6% | 1.8% | 452 |
| 6am–7am | 89.6% | 0.7% | 145 |
| 7am–8am | 90.0% | 0.0% | 70 |
| 8am–9am | 91.4% | 0.0% | 81 |
| 9am–10am | 93.3% | 0.0% | 238 |
| 10am–11am | 97.6% | 1.6% | 127 |
| 11am–12pm | 97.0% | 0.0% | 102 |
| 12pm–1pm | 92.4% | 0.0% | 145 |
| 1pm–2pm | 81.9% | 0.0% | 106 |
| 2pm–3pm | 74.8% | 0.9% | 108 |
| 3pm–4pm | 75.9% | 0.5% | 196 |
| 4pm–5pm | 71.4% | 1.5% | 136 |
| 5pm–6pm | 80.8% | 0.8% | 121 |
| 6pm–7pm | 74.2% | 3.7% | 190 |
| 7pm–8pm | 65.2% | 3.2% | 185 |
| 8pm–9pm | Limited data | 29 | |
| 9pm–10pm | Limited data | 15 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IND 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) | 83.7% | -2.2 pts | 2.3% | 44 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.0% | -7.9 pts | 0.0% | 91 |
| Summer peak (Jun 15 - Aug 15) | 82.0% | -3.9 pts | 2.6% | 465 |
| All other days | 85.9% | — | 0.9% | 1,846 |
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).