Route profile
DTW→BWI
Flight reliability, delays and best times to fly from Detroit to Baltimore, 409 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 69% of comparable major US routes (4,598 compared)
Calculated from 6,493 flights. How this is calculated
DTW → BWI arrives on time 81.6% of the time; the return trip, BWI → DTW, arrives on time 79.9% of the time.
DTW → BWI spends 22.2 minutes on the ground on a 409-mile trip: 15.5 minutes from pushback to wheels-up at DTW and 6.7 minutes from touchdown to gate at BWI.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
Why DTW → BWI flights are cancelled
July 2023 – July 2026
DTW → BWI cancelled 74 of 6,493 scheduled flights — about 1 in every 88. The reason filed most often was extreme weather, 48.6% of the cancellations coded on this route — about 1 in every 180 scheduled flights.
Share of cancellations
Of 74 cancelled departures carrying a reason code.
What each reason means
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
36 cancellations, 48.6% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
32 cancellations, 43.2% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
6 cancellations, 8.1% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
74 coded cancellations were recorded on DTW → BWI; the section appears from 50.
When it goes wrong
July 2023 – July 2026
33 min late
against a median of 7 min early
Percentiles over 6,493 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at BWI after arriving from DTW.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 33% | Likely to miss |
| 45 min | 18% | High risk |
| 60 min | 11% | Some risk |
| 90 min | 5.9% | Some risk |
| 120 min | 3.7% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 1.14% of the time and diverts 0.12% of the time, which a late arrival never shows up in.
Chance of missing is the share of 6,411 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 33 minutes late (90th-percentile gate arrival delay), over 6,493 operations.
Any other layover length: connection checker.
Best time to fly
DTW → BWI flights departing 5–9 AM arrived on time 90.9% of the time, against 64.3% for 6–9 PM departures, a gap of 26.6 percentage points.
By departure window
By departure hour
- 12 AM to 4 AM: too few flights to score
- 5 AM: 93.3% on time from 798 flights
- 6 AM: 94.1% on time from 358 flights
- 7 AM: 89.7% on time from 353 flights
- 8 AM: 74.5% on time from 158 flights
- 9 AM: too few flights to score
- 10 AM: 87.7% on time from 953 flights
- 11 AM: 88.7% on time from 124 flights
- 12 PM: 82.9% on time from 240 flights
- 1 PM: 76.8% on time from 212 flights
- 2 PM: 83.8% on time from 211 flights
- 3 PM: 76.0% on time from 986 flights
- 4 PM: 76.7% on time from 361 flights
- 5 PM: 62.3% on time from 246 flights
- 6 PM: 63.9% on time from 162 flights
- 7 PM to 8 PM: too few flights to score
- 9 PM: 77.9% on time from 1,048 flights
- 10 PM to 11 PM: too few flights to score
Why DTW → BWI runs late
July 2023 – July 2026
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for DTW → BWI. Only delays of 15 minutes or more are attributed.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Delta Air Lines | 3,496 | 82.1% | 1.06% | -9 min | 6.8% |
| Southwest Airlines | 2,420 | 82.6% | 0.99% | -5 min | 4.1% |
| Frontier Airlines | 405 | 68.7% | 2.96% | -3 min | 10.4% |
Delta Air Lines flew 55.3% of the 6,321 flights listed. Frontier Airlines cancelled 2.96% of its flights here against 0.99% for Southwest Airlines.
Southwest Airlines arrived on time 13.9 percentage points more often than Frontier Airlines on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
DL1546 (10:10 AM) arrived on time 87.0% of the time, 9.8 points more often than DL2715 (9:45 PM) at 77.2%.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Sunday the least, a gap of 7.7 percentage points.
By month
- Jan: 72.9%
- Feb: 84.6%
- Mar: 83.9%
- Apr: 83.6%
- May: 80.9%
- Jun: 77.0%
- Jul: 72.4%
- Aug: 81.0%
- Sep: 87.8%
- Oct: 91.4%
- Nov: 86.4%
- Dec: 80.6%
July is historically the weakest month and October the strongest, a spread of 19.0 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 66.7% from 153 flights
- August 2023: 78.0% from 151 flights
- September 2023: 88.7% from 143 flights
- October 2023: 92.8% from 153 flights
- November 2023: 88.5% from 139 flights
- December 2023: 89.1% from 147 flights
- January 2024: 66.4% from 151 flights
- February 2024: 92.3% from 143 flights
- March 2024: 89.7% from 155 flights
- April 2024: 83.3% from 162 flights
- May 2024: 76.0% from 173 flights
- June 2024: 74.0% from 175 flights
- July 2024: 68.0% from 189 flights
- August 2024: 80.7% from 187 flights
- September 2024: 87.8% from 188 flights
- October 2024: 91.4% from 197 flights
- November 2024: 88.3% from 180 flights
- December 2024: 82.6% from 167 flights
- January 2025: 75.8% from 164 flights
- February 2025: 78.6% from 146 flights
- March 2025: 85.4% from 172 flights
- April 2025: 82.9% from 165 flights
- May 2025: 85.5% from 207 flights
- June 2025: 79.9% from 215 flights
- July 2025: 75.8% from 219 flights
- August 2025: 83.2% from 227 flights
- September 2025: 87.2% from 218 flights
- October 2025: 90.5% from 232 flights
- November 2025: 82.5% from 160 flights
- December 2025: 70.8% from 165 flights
- January 2026: 76.0% from 159 flights
- February 2026: 82.8% from 138 flights
- March 2026: 76.5% from 159 flights
- April 2026: 84.4% from 175 flights
- May 2026: 80.2% from 206 flights
- June 2026: 76.5% from 203 flights
- July 2026: 77.1% from 210 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 81.0% against 82.9% in the 12 months before — declining by 1.9 percentage points.
Data and methodology
Calculated by FlyerIntel from 6,493 DTW → BWI flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed