Historical on-time performance

ORDATL

Chicago to Atlanta

606 miData through Dec 2025Source: US DOT · BTS

Flights on ORD–ATL arrive on time 74% of the time over the last 12 months.

On-time rate74%arrived within 15 min

Median delayon timetypical arrival

p90 delay55 min1 in 10 flights is worsetail risk

Cancelled1.8%of scheduled flights

based on 5,841 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	73%	on time	55 min	2.7%	257
Delta Air Lines	78%	on time	40 min	1.5%	2,602
United Airlines	75%	on time	40 min	1.3%	1,520
American Airlines	62%	on time	95 min	2.7%	486
Spirit Airlines⚠ low data	37%	15 min	65 min	0.0%	30
Envoy Airbest	78%	on time	50 min	2.3%	299
Frontier Airlines	62%	on time	90 min	3.6%	647

Republic Airways
On-time73%
Medianon time
p9055 min
Cancel2.7%
Flights257
Delta Air Lines
On-time78%
Medianon time
p9040 min
Cancel1.5%
Flights2,602
United Airlines
On-time75%
Medianon time
p9040 min
Cancel1.3%
Flights1,520
American Airlines
On-time62%
Medianon time
p9095 min
Cancel2.7%
Flights486
Spirit Airlines
On-time37%
Median15 min
p9065 min
Cancel0.0%
Flights30
Envoy Airbest
On-time78%
Medianon time
p9050 min
Cancel2.3%
Flights299
Frontier Airlines
On-time62%
Medianon time
p9090 min
Cancel3.6%
Flights647

Why flights run late

Delay causes

Airline30%
Weather5%
Air traffic (NAS)20%
Late aircraft44%
Security0%

Most delay minutes here are attributed to Late aircraft.

Over time

On-time trend

By season

On-time rate by month

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Keep exploring

Related pages

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