Historical on-time performance

ATLORD

Atlanta to Chicago

606 miData through Dec 2025Source: US DOT · BTS

Flights on ATL–ORD arrive on time 72% of the time over the last 12 months.

On-time rate72%arrived within 15 min

Median delayon timetypical arrival

p90 delay60 min1 in 10 flights is worsetail risk

Cancelled1.9%of scheduled flights

based on 5,805 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

Airline	On-time	Median	p90	Cancel	Flights
Republic Airways	76%	on time	40 min	2.4%	255
United Airlines	77%	on time	45 min	1.6%	1,520
Delta Air Lines	72%	on time	45 min	1.5%	2,602
Spirit Airlinesbest⚠ low data	90%	on time	10 min	0.0%	30
American Airlines	70%	on time	80 min	2.9%	489
Envoy Air	75%	on time	45 min	3.0%	267
Frontier Airlines	59%	on time	100 min	3.0%	642

Republic Airways
On-time76%
Medianon time
p9040 min
Cancel2.4%
Flights255
United Airlines
On-time77%
Medianon time
p9045 min
Cancel1.6%
Flights1,520
Delta Air Lines
On-time72%
Medianon time
p9045 min
Cancel1.5%
Flights2,602
Spirit Airlinesbest
On-time90%
Medianon time
p9010 min
Cancel0.0%
Flights30
American Airlines
On-time70%
Medianon time
p9080 min
Cancel2.9%
Flights489
Envoy Air
On-time75%
Medianon time
p9045 min
Cancel3.0%
Flights267
Frontier Airlines
On-time59%
Medianon time
p90100 min
Cancel3.0%
Flights642

Why flights run late

Delay causes

Airline33%
Weather6%
Air traffic (NAS)28%
Late aircraft33%
Security0%

Most delay minutes here are attributed to Airline.

Over time

On-time trend

By season

On-time rate by month

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Related pages

Delay predictorfor this route→ATL airportAtlanta→ORD airportChicago→Republic Airways on this routecarrier detail→Republic Airwaysairline profile→