Historical on-time performance
Anchorage to Chicago
2,846 miData through May 2026Source: US DOT · BTS
Flights on ANC–ORD arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 645 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- United AirlinesOn-time83%Medianon timep9020 minCancel1.4%Flights362
- Alaska AirlinesOn-time77%Medianon timep9040 minCancel0.0%Flights161
- American AirlinesOn-time66%Medianon timep9070 minCancel0.8%Flights122
Why flights run late
Delay causes
- Airline27%
- Weather0%
- Air traffic (NAS)20%
- Late aircraft53%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline83%
- Weather17%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 6 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ANC → ORD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 79% on time.
- Tuesdays79% on time · p90 35 min · 312 flights
- Sundays75% on time · p90 40 min · 340 flights
- Wednesdays75% on time · p90 45 min · 310 flights
- Fridays75% on time · p90 35 min · 357 flights
- Saturdays74% on time · p90 40 min · 349 flights
- Thursdays73% on time · p90 55 min · 339 flights
- Mondays72% on time · p90 45 min · 316 flights
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