Best Time to Fly ANC to ORD: On-Time Stats by Hour & Airline
Ted Stevens Anchorage International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.5% of Anchorage (ANC) to Chicago (ORD) flights arrived on time (786 scheduled flights). That is 0.9 points above the national average of 77.6%.
Among 3 airlines, United Airlines led with 83.1% on time and American Airlines was last with 71.5%.
Over 24 months, Tuesday was the most reliable day (83% on time) and March the worst month (69%).
The cancellation rate was 1.5% (US average 1.8%).
ANC to ORD 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 | 83.1% | 75 min | 2.3% | 438 |
| Alaska Airlines | 73.7% | 40 min | 0.5% | 210 |
| American Airlines | 71.5% | 53 min | 0.7% | 138 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ANC to ORD
On-time arrival % by scheduled departure hour (local time), 1,523 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 3 | |
| 8pm–9pm | 88.6% | 1.2% | 320 |
| 9pm–10pm | 75.9% | 1.0% | 619 |
| 10pm–11pm | 93.8% | 0.0% | 81 |
| 11pm–12am | 78.6% | 1.2% | 500 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ANC to ORD
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) | Limited data | 11 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 93.3% | +9.7 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 75.8% | -7.8 pts | 0.7% | 619 |
| All other days | 83.7% | — | 1.3% | 863 |
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).