Historical on-time performance
Chicago to Anchorage
2,846 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–ANC arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 643 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Alaska AirlinesOn-time74%Medianon timep9040 minCancel0.6%Flights160
- United AirlinesbestOn-time84%Medianon timep9020 minCancel0.3%Flights361
- American AirlinesOn-time61%Median5 minp9060 minCancel0.0%Flights122
Why flights run late
Delay causes
- Airline37%
- Weather6%
- Air traffic (NAS)24%
- Late aircraft33%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ORD → ANC
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 62% to 82% on time.
- Middays82% on time · p90 25 min · 185 flights · limited
- Afternoons81% on time · p90 30 min · 724 flights
- Early mornings74% on time · p90 40 min · 247 flights
- Mornings73% on time · p90 45 min · 746 flights
- Evenings62% on time · p90 55 min · 423 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 79% on time.
- Mondays79% on time · p90 40 min · 341 flights
- Saturdays76% on time · p90 40 min · 356 flights
- Fridays75% on time · p90 35 min · 338 flights
- Sundays75% on time · p90 50 min · 346 flights
- Tuesdays74% on time · p90 40 min · 316 flights
- Thursdays71% on time · p90 40 min · 316 flights
- Wednesdays70% on time · p90 45 min · 312 flights
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