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Route · BHM → DTW · 2020–2025 BTS data

Birmingham to Detroit

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), BHM to DTW (Birmingham to Detroit) ranks #4388 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

82.8%
On-time
+3.8 pts
vs US avg
108 min
Delay when late
1,141
Flights
#4388 of 4927
Corpus placement

Cancelled

0.6%

Best Month

Jul 2021 88%

Worst Month

Aug 2024 70%

Distance

625 mi

Carriers

7

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Jul 2025 63 15 1 1 OO,NK
Jun 2025 32 6 0 0 NK,OO
Apr 2025 42 10 0 0 OO
Dec 2024 47 15 0 0 9E,OO
Nov 2024 57 13 0 0 OO
Oct 2024 57 15 0 0 OO,DL,9E
Sep 2024 51 7 0 0 OO
Aug 2024 54 16 0 2 OO
Jul 2024 54 14 0 0 9E,OO
Jun 2024 48 6 0 1 9E,OO
Apr 2024 30 8 0 0 9E,OO
Dec 2023 41 0 0 1 OO,9E
Nov 2023 44 3 0 0 9E,OO
Oct 2023 47 2 0 0 9E,OO
Sep 2023 46 4 0 0 9E,OO
Aug 2023 58 11 2 0 OO
Jul 2023 54 9 0 0 9E,OO
Jun 2023 51 8 0 0 9E
Mar 2023 30 3 1 0 9E
Oct 2021 31 4 0 0 9E
Jul 2021 56 7 0 0 9E
Jun 2021 56 7 0 0 9E
May 2021 47 6 0 0 9E
Mar 2020 45 7 3 0 9E,OO

BHM–DTW seasonal on-time pattern

Best: September (88.7%) · weakest: April (75.0%)

70%75%80%85%90% MarAprMayJunJulAugSepOctNovDec 83%

Strongest calendar month

September

88.7% on-time · ~49 flights/mo

Busiest calendar month

July

~57 flights/mo avg

Weakest calendar month

April

75.0% on-time · ~36 flights/mo

Cancellation Rate

0.6%

7 of 1,141 flights

Diversion Rate

0.4%

5 of 1,141 flights

Explore origin & destination

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

BHM - Birmingham

Full on-time, delay-cause, and seasonal performance for Birmingham, AL.

BHM on-time profile

DTW - Detroit

Full on-time, delay-cause, and seasonal performance for Detroit, MI.

DTW on-time profile

Compare the two airports

See BHM and DTW side by side on delays, cancellations, and reliability.

Compare BHM vs DTW

Origin-hub reliability standing

Mid-pack among BHM departures

From BHM, this corridor sits with 16 other 75–85% on-time routes out of 18 tracked departures, not the hub's reliability leaders (2 at ≥85%) and not the softest ( 0 below 75%). Destination: Detroit · fleet on-time rank #2019 of 4927.

What the Data Says About BHM to DTW

Bureau of Transportation Statistics records show Birmingham to Detroit (BHM to DTW) running a 82.8% on-time rate over 1,141 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 108.4 minutes. The 625-mile corridor is served by 7 carriers, and over the last 24 months 0.6% of 1,141 flights were cancelled, 0.4% diverted.

The monthly split is wide on this route: Jul 2021 posted the strongest performance at 88% on-time, while Aug 2024 came in at just 70% - a 17-point swing worth factoring into travel timing.

On the multi-year calendar, BHM–DTW peaks in September at 88.7% on-time while July carries the heaviest traffic (~57 flights per month) ; the softest month is April at 75.0%, a 13.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does BHM to DTW rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, BHM to DTW ranks #4388 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 BHM to DTW? ▼
Flights from Birmingham to Detroit have a 82.8% on-time rate based on 1,141 flights. The average delay is 108.4 minutes. The best recent month was Jul 2021 with 88% on-time.
What is the cancellation rate for BHM to DTW? ▼
Over the last 24 months, 0.6% of flights on this route were cancelled (7 of 1,141 flights) and 0.4% were diverted.
How far is the flight from BHM to DTW? ▼
The flight distance from Birmingham (BHM) to Detroit (DTW) is approximately 625 miles. This route is served by 7 carriers.
When is the best time to fly from BHM to DTW? ▼
The best recent month for on-time performance was Jul 2021 (88% on-time). The worst was Aug 2024 (70% on-time). Consider booking during months with historically better performance.

Airports on this route

BHM Airport

Birmingham
DTW Airport

Detroit
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 BHM–DTW data

BHM–DTW runs 3.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare BHM and DTW airport profiles: delay causes and top routes differ even on the same corridor. BHM airport
  • If your dates flex, September (88.7% on-time) beats April (75.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 82.8% 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.