Best Time to Fly BWI to LAS: On-Time Stats by Hour & Airline
Baltimore/Washington International Thurgood Marshall → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
1,789 flights were scheduled from Baltimore (BWI) to Las Vegas (LAS) in the last 12 months, and 79.6% of those that flew arrived on time, 2.0 points above the US average of 77.6%.
Spirit Airlines was the most punctual of the 2 airlines on the route at 88.7%, while Southwest Airlines trailed at 78.7%.
October has been the best month (90% on time) and Thursday the weakest day of the week (77%).
0.8% of flights were cancelled, versus 1.8% nationally.
BWI to LAS 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 |
|---|---|---|---|---|
| Spirit Airlines | 88.7% | 56 min | 0.0% | 151 |
| Southwest Airlines | 78.7% | 53 min | 0.8% | 1,638 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BWI to LAS
On-time arrival % by scheduled departure hour (local time), 3,922 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 10 | |
| 6am–7am | 90.6% | 0.3% | 750 |
| 7am–8am | 92.3% | 0.0% | 130 |
| 8am–9am | 89.4% | 0.5% | 425 |
| 9am–10am | 89.2% | 1.1% | 188 |
| 10am–11am | 83.1% | 0.8% | 245 |
| 11am–12pm | 75.9% | 0.0% | 58 |
| 12pm–1pm | 74.3% | 0.0% | 101 |
| 1pm–2pm | 80.6% | 1.4% | 141 |
| 2pm–3pm | 73.7% | 0.0% | 245 |
| 3pm–4pm | 67.2% | 0.5% | 203 |
| 4pm–5pm | 77.9% | 0.0% | 181 |
| 5pm–6pm | 67.0% | 0.0% | 180 |
| 6pm–7pm | 71.0% | 1.6% | 370 |
| 7pm–8pm | 68.0% | 2.3% | 306 |
| 8pm–9pm | 74.8% | 2.2% | 134 |
| 9pm–10pm | 66.7% | 2.2% | 228 |
| 10pm–11pm | Limited data | 27 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BWI to LAS
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) | 77.3% | -5.0 pts | 0.0% | 66 |
| Christmas & New Year (Dec 20 - Jan 3) | 66.4% | -15.8 pts | 0.7% | 145 |
| Summer peak (Jun 15 - Aug 15) | 69.8% | -12.4 pts | 2.4% | 662 |
| All other days | 82.2% | — | 0.6% | 3,049 |
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).