Route · ORD → BHM · 2020–2025 BTS data
Chicago to Birmingham
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), ORD to BHM (Chicago to Birmingham) ranks #3045 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 81.3%
- On-time
- +2.3 pts
- vs US avg
- 64 min
- Delay when late
- 3,664
- Flights
- #3045 of 4927
- Corpus placement
Cancelled
1.0%
Best Month
Oct 2024 97%
Worst Month
Jun 2024 60%
Distance
584 mi
Carriers
19
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 73 | 26 | 0 | 0 | YX,OH,MQ |
| Nov 2025 | 84 | 16 | 4 | 0 | MQ,YX |
| Oct 2025 | 114 | 28 | 0 | 0 | OO,YX,MQ |
| Sep 2025 | 121 | 11 | 0 | 0 | MQ,OO,YX |
| Aug 2025 | 108 | 10 | 2 | 0 | YX,MQ |
| Jul 2025 | 83 | 18 | 2 | 0 | YX,MQ |
| Jun 2025 | 79 | 21 | 0 | 0 | OO,YX,MQ |
| May 2025 | 61 | 17 | 0 | 0 | OO,MQ |
| Apr 2025 | 42 | 9 | 0 | 0 | MQ |
| Dec 2024 | 31 | 4 | 0 | 0 | MQ,YX |
| Nov 2024 | 60 | 8 | 0 | 0 | YX,MQ,OO |
| Oct 2024 | 94 | 3 | 0 | 0 | MQ,YX |
| Sep 2024 | 90 | 13 | 0 | 0 | YX,UA,AA,MQ |
| Jun 2024 | 55 | 22 | 2 | 0 | MQ,OO |
| May 2024 | 49 | 17 | 0 | 0 | MQ,OO |
| Dec 2023 | 72 | 12 | 0 | 0 | OO,MQ,YX |
| Nov 2023 | 57 | 7 | 0 | 0 | MQ,YX,OO |
| Oct 2023 | 73 | 8 | 0 | 0 | MQ,OO |
| Sep 2023 | 73 | 18 | 0 | 1 | MQ,OO,UA |
| Aug 2023 | 83 | 16 | 1 | 1 | OO,YX |
| Jul 2023 | 60 | 16 | 3 | 1 | YX,OO |
| Jun 2023 | 60 | 12 | 1 | 0 | OO |
| May 2023 | 75 | 13 | 0 | 0 | MQ,YX,OO |
| Apr 2023 | 86 | 14 | 3 | 0 | OO,MQ |
ORD–BHM seasonal on-time pattern
Best: November (86.4%) · weakest: June (72.8%)
Strongest calendar month
November
86.4% on-time · ~56 flights/mo
Busiest calendar month
September
~83 flights/mo avg
Weakest calendar month
June
72.8% on-time · ~63 flights/mo
Cancellation Rate
1.0%
18 of 1,783 flights
Diversion Rate
0.2%
3 of 1,783 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 profileBHM - Birmingham
Full on-time, delay-cause, and seasonal performance for Birmingham, AL.
BHM on-time profileCompare the two airports
See ORD and BHM side by side on delays, cancellations, and reliability.
Compare ORD vs BHMOrigin-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: Birmingham · fleet on-time rank #2627 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to ORD–BHM.
Routes with a similar on-time rate
What the Data Says About ORD to BHM
3,664 tracked flights put the ORD to BHM pairing (Chicago to Birmingham) at a 81.3% on-time rate, squarely in line with the wider network. Delays that do occur run 64.3 minutes on average. Across the 584-mile route and its 19 carriers, the trailing 24 months show 1.0% cancelled and 0.2% diverted (1,783 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 97% on-time, while Jun 2024 came in at just 60% - a 37-point swing worth factoring into travel timing.
On the multi-year calendar, ORD–BHM peaks in November at 86.4% on-time while September carries the heaviest traffic (~83 flights per month) ; the softest month is June at 72.8%, a 13.6-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does ORD to BHM rank among US routes by traffic? ▼
How often are flights delayed from ORD to BHM? ▼
What is the cancellation rate for ORD to BHM? ▼
How far is the flight from ORD to BHM? ▼
When is the best time to fly from ORD to BHM? ▼
Airports on this route
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–BHM data
ORD–BHM is mid-pack at 81.3% on-time; month and carrier mix move more than the corridor headline.
- Compare ORD and BHM airport profiles: delay causes and top routes differ even on the same corridor. ORD airport
- If your dates flex, November (86.4% on-time) beats June (72.8%) on this corridor. Seasonal chart
- 4 other routes post a similar 81.3% 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.
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.