BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
ANCORD

Anchorage, AK (ANC) to Chicago, IL (ORD) flight delay odds

Historically, 75.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 787 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
75.9%arrived on time
11.7%30+ min late
1.3%cancelled
787scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.8%all scheduled flights
120+ minutes late1.7%all scheduled flights
Diverted0.5%did not reach as scheduled
Average arrival+3.7 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Evening17783.6%6.8%1.7%
Night61073.6%13.1%1.1%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday10874.1%11.1%4.6%
Tuesday11279.5%8.9%0.0%
Wednesday10781.3%12.1%0.0%
Thursday11677.6%10.3%0.9%
Friday11776.9%12.0%0.9%
Saturday11469.3%14.0%0.9%
Sunday11372.6%13.3%1.8%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines43878.8%8.9%1.8%
Alaska Airlines21173.9%13.7%0.5%
American Airlines13869.6%17.4%0.7%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202515573.5%13.5%0.6%
August 202514372.0%15.4%0.7%
September 202510088.0%6.0%0.0%
October 20254877.1%8.3%4.2%
November 20252965.5%13.8%6.9%
December 20251586.7%6.7%0.0%
January 20265100.0%0.0%0.0%
March 20262759.3%25.9%3.7%
April 20263183.9%6.5%0.0%
May 20269379.6%7.5%2.2%
June 202614172.3%12.8%0.7%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline29.6%
Late aircraft46.5%
National airspace23.5%
Weather0.2%
Security0.3%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.