Best Time to Fly PHX to BWI: On-Time Stats by Hour & Airline
Phoenix Sky Harbor International → Baltimore/Washington International Thurgood Marshall
Data through July 2026 · Last updated October 18, 2026
1,236 flights were scheduled from Phoenix (PHX) to Baltimore (BWI) 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%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (86% on time) and July the worst month (72%).
The cancellation rate was 0.9% (US average 1.8%).
PHX 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 | 79.6% | 45 min | 0.9% | 1,236 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PHX to BWI
On-time arrival % by scheduled departure hour (local time), 2,537 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.9% | 0.2% | 472 |
| 6am–7am | 92.6% | 0.6% | 165 |
| 7am–8am | 82.0% | 0.0% | 50 |
| 8am–9am | 88.3% | 0.0% | 78 |
| 9am–10am | 76.0% | 3.6% | 166 |
| 10am–11am | 78.0% | 2.9% | 103 |
| 11am–12pm | 77.6% | 0.0% | 125 |
| 12pm–1pm | 81.5% | 0.8% | 131 |
| 1pm–2pm | 69.8% | 1.9% | 210 |
| 2pm–3pm | 61.3% | 0.0% | 76 |
| 3pm–4pm | 74.8% | 1.0% | 100 |
| 4pm–5pm | 55.8% | 1.7% | 116 |
| 5pm–6pm | Limited data | 16 | |
| 6pm–7pm | 75.6% | 0.6% | 177 |
| 7pm–8pm | 63.0% | 0.0% | 46 |
| 9pm–10pm | 90.0% | 0.0% | 200 |
| 10pm–11pm | 87.1% | 0.0% | 156 |
| 11pm–12am | 85.8% | 1.3% | 150 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PHX 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) | 93.8% | +11.1 pts | 0.0% | 48 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.3% | -4.3 pts | 0.9% | 107 |
| Summer peak (Jun 15 - Aug 15) | 75.7% | -6.9 pts | 2.1% | 384 |
| All other days | 82.6% | — | 0.7% | 1,998 |
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).