Best Time to Fly ORD to PBI: On-Time Stats by Hour & Airline
Chicago O'Hare International → Palm Beach International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 70.0% of Chicago (ORD) to West Palm Beach/Palm Beach (PBI) flights arrived on time (1,329 scheduled flights). That is 7.6 points below the national average of 77.6%.
Among 2 airlines, United Airlines led with 73.7% on time and American Airlines was last with 67.5%.
Over 24 months, Tuesday was the most reliable day (86% on time) and March the worst month (66%).
The cancellation rate was 1.5% (US average 1.8%).
ORD to PBI 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 |
|---|---|---|---|---|
| United Airlines | 73.7% | 68 min | 0.4% | 533 |
| American Airlines | 67.5% | 83 min | 2.3% | 796 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to PBI
On-time arrival % by scheduled departure hour (local time), 2,383 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 5am–6am | Limited data | 2 | |
| 6am–7am | 82.1% | 0.0% | 56 |
| 7am–8am | 82.0% | 0.4% | 278 |
| 8am–9am | 78.1% | 1.9% | 374 |
| 9am–10am | 70.3% | 5.1% | 39 |
| 10am–11am | 79.2% | 1.1% | 472 |
| 11am–12pm | 70.4% | 0.0% | 260 |
| 12pm–1pm | 70.4% | 1.4% | 291 |
| 1pm–2pm | 60.9% | 2.0% | 306 |
| 2pm–3pm | Limited data | 14 | |
| 3pm–4pm | 75.0% | 0.0% | 36 |
| 4pm–5pm | 75.2% | 0.0% | 111 |
| 5pm–6pm | 67.4% | 4.4% | 45 |
| 6pm–7pm | Limited data | 18 | |
| 7pm–8pm | 60.8% | 1.2% | 80 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD to PBI
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) | 57.7% | -17.6 pts | 5.5% | 55 |
| Christmas & New Year (Dec 20 - Jan 3) | 61.5% | -13.9 pts | 0.6% | 180 |
| Summer peak (Jun 15 - Aug 15) | 73.8% | -1.5 pts | 2.4% | 287 |
| All other days | 75.3% | — | 1.0% | 1,861 |
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).