PlainFlights

Route · ORD → CHA · 2020–2025 BTS data

Chicago to Chattanooga

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ORD to CHA (Chicago to Chattanooga) ranks #3284 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

77%
On-time
-2 pts
vs US avg
73 min
Delay when late
3,032
Flights
#3284 of 4927
Corpus placement

Cancelled

1.6%

Best Month

Mar 2024 92%

Worst Month

Jan 2024 55%

Distance

501 mi

Carriers

6

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 61 21 3 0 YX,MQ,OO
Nov 2025 118 31 10 2 OO,YX
Oct 2025 132 39 1 0 OO,YX
Sep 2025 59 13 0 0 OO
Apr 2025 60 8 2 0 OO
Feb 2025 36 9 0 1 OO
Jan 2025 85 32 3 1 OO
Dec 2024 88 30 0 0 OO,YX
Nov 2024 89 12 0 0 YX,OO
Oct 2024 93 11 0 0 OO,YX
Sep 2024 90 12 0 0 OO
Aug 2024 93 28 1 0 OO
Jul 2024 91 29 1 0 OO
Jun 2024 90 19 1 0 OO
May 2024 90 32 1 1 OO
Apr 2024 86 17 2 0 OO
Mar 2024 84 7 0 0 OO
Feb 2024 79 10 1 0 OO
Jan 2024 85 38 5 0 OO
Dec 2023 87 8 0 0 OO,YX
Nov 2023 89 15 0 0 YX,OO
Oct 2023 93 25 0 1 OO
Sep 2023 88 21 0 0 OO
Aug 2023 85 14 1 0 OO

ORD–CHA seasonal on-time pattern

Best: March (88.7%) · weakest: January (64.9%)

60%70%80%90% JanFebMarAprMayJunJulAugSepOctNovDec 74.6%

Strongest calendar month

March

88.7% on-time · ~62 flights/mo

Busiest calendar month

October

~87 flights/mo avg

Weakest calendar month

January

64.9% on-time · ~74 flights/mo

Cancellation Rate

1.6%

32 of 2,051 flights

Diversion Rate

0.3%

6 of 2,051 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

ORD - Chicago

Full on-time, delay-cause, and seasonal performance for Chicago, IL.

ORD on-time profile

CHA - Chattanooga

Full on-time, delay-cause, and seasonal performance for Chattanooga, TN.

CHA on-time profile

Compare the two airports

See ORD and CHA side by side on delays, cancellations, and reliability.

Compare ORD vs CHA

Origin-hub reliability standing

Mid-pack among ORD departures

From ORD, this corridor sits with 147 other 75–85% on-time routes out of 168 tracked departures, not the hub's reliability leaders (10 at ≥85%) and not the softest ( 11 below 75%). Destination: Chattanooga · fleet on-time rank #4104 of 4927.

What the Data Says About ORD to CHA

The Chicago to Chattanooga corridor (ORD to CHA) posts a 77% on-time rate on the lower edge of the average band, based on 3,032 tracked flights. Late flights run 72.6 minutes behind on average. 6 carriers cover the 501-mile route; over the last 24 months, 32 of 2,051 flights were cancelled (1.6%) and 0.3% diverted.

The monthly split is wide on this route: Mar 2024 posted the strongest performance at 92% on-time, while Jan 2024 came in at just 55% - a 36-point swing worth factoring into travel timing.

On the multi-year calendar, ORD–CHA peaks in March at 88.7% on-time while October carries the heaviest traffic (~87 flights per month) ; the softest month is January at 64.9%, a 23.8-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does ORD to CHA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, ORD to CHA ranks #3284 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from ORD to CHA? ▼
Flights from Chicago to Chattanooga have a 77% on-time rate based on 3,032 flights. The average delay is 72.6 minutes. The best recent month was Mar 2024 with 92% on-time.
What is the cancellation rate for ORD to CHA? ▼
Over the last 24 months, 1.6% of flights on this route were cancelled (32 of 2,051 flights) and 0.3% were diverted.
How far is the flight from ORD to CHA? ▼
The flight distance from Chicago (ORD) to Chattanooga (CHA) is approximately 501 miles. This route is served by 6 carriers.
When is the best time to fly from ORD to CHA? ▼
The best recent month for on-time performance was Mar 2024 (92% on-time). The worst was Jan 2024 (55% on-time). Consider booking during months with historically better performance.

Airports on this route

ORD Airport

Chicago
CHA Airport

Chattanooga
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using ORD–CHA data

ORD–CHA is mid-pack at 77% on-time; month and carrier mix move more than the corridor headline.

  • Compare ORD and CHA airport profiles: delay causes and top routes differ even on the same corridor. ORD airport
  • If your dates flex, March (88.7% on-time) beats January (64.9%) on this corridor. Seasonal chart
  • 4 other routes post a similar 77% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.