Carrier route record
DLBWI→MSP
Delta Air Lines · Baltimore to Minneapolis
- Flights
- 923
- Period
- September 2025 to August 2026
- Share of route
- 65%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Delta Air Lines.
Delta on BWI to MSP earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs close to two hours. That rests on 923 flights, with a median arrival 9 minutes early.
Set against the rest of the country, Delta's BWI to MSP record is 7 points better than the US average of 77.3%. That gap is worth roughly 71 fewer late arrivals for every thousand flights.
Key figures
On time
84.4%
Arrivals under 15 minutes late, of 905 completed flights
Avg delay
105 min
Across delayed arrivals only, not all flights
Cancelled
1.84%
National rate is 1.89%
Whole route
78.5%
Every carrier on BWI to MSP, 1,423 flights
These figures cover 923 flights between September 2025 and August 2026. The median arrival is 9 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Carrier by carrier
Delta against every carrier on BWI to MSP
Delta flew 923 of the 1,423 flights on BWI to MSP, most of the route. Its 84.4% on time is 6 points better than the route as a whole, which runs 78.5%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Delta at 84.4% to Southwest at 67.4%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines (this page) | 923 | 84.4% | 105 min | 1.84% | B |
| Southwest Airlines | 500 | 67.4% | 57 min | 2.60% | C |
Flight by flight
Delta flight numbers on BWI to MSP
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Departure window
When Delta runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 17 points, against half a point between the best and worst carrier.
- 5am–8am365 flights89.4%
- 8am–11am—
- 11am–2pm207 flights79.5%
- 2pm–5pm143 flights92.0%
- 5pm–8pm208 flights75.5%
- 8pm–5am—
Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 2pm–5pm slot at 92.0% on time, ahead of 5pm–8pm at 75.5%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 5am–8am window is the busiest, with 365 flights scheduled in it.
Across the year
Delta on BWI to MSP through the year
July is the worst month at 75.3% on time, 23 points below February, the best at 97.9%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. May was the busiest month here, with 87 flights.
Across the week, Tuesday is the strongest day at 91.0% on time and Sunday the weakest at 76.9%, a spread of 14 points.
Arrival by arrival
How late Delta on BWI to MSP runs when it is late
Delta on BWI to MSP often beats the schedule: 313 of 905 completed flights, 35%, arrived 15 minutes or more early. The 141 late arrivals split 50 under half an hour, 36 between 30 and 60 minutes, and 55 an hour or more.
- 15+ min early313 flights34.6%
- Within 15 min451 flights49.8%
- 15–29 min late50 flights5.5%
- 30–59 min late36 flights4.0%
- 1–2 hours late29 flights3.2%
- 2+ hours late26 flights2.9%
Scale runs 0% to 100%.
Share of 905 completed flights by arrival against schedule.
21 of 130 late departures made up the time and arrived on time, 16% of them. 32 flights left on time and still arrived late.
The worst days
Worst days for Delta on BWI to MSP
The latest arrival of the period was on 10 August 2026, 18 hours 56 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 August 2026 | 18 hours 56 minutes | Carrier |
| 22 August 2026 | 18 hours 19 minutes | Carrier |
| 5 July 2026 | 17 hours 2 minutes | National Airspace System |
| 6 July 2026 | 15 hours 2 minutes | Carrier |
| 29 November 2025 | 13 hours 55 minutes | Carrier |
Delay causes
Why Delta runs late on this route
Carrier accounts for 52% of the 15,000 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Carrier
- 30%Late-arriving aircraft
- 18%National Airspace System
- 0%Extreme weather
The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 7,740 of the 15,000 delay minutes reported here. The split is drawn from 14,755 reported delay minutes.
Cancellations sit at 1.84% against a national 1.89%, which is ordinary. Diversions add another 0.11%.
Connections and stage length
What a delay here costs
6.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.
The 936 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg runs 82.0% on time across 923 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 923 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking Delta on BWI to MSP
Put together: treat all of this as provisional. 923 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 84.4% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 905 completed flights over 12 months sit behind that.
Related
Where to go next
- BWI to MSP, every carrier
- Delta on MSP to BWI, the return leg
- Southwest Airlines on BWI to MSP67.4%
- Delta Air Lines network-wide record
- Baltimore/Washington International Thurgood Marshall (BWI) delay statistics
- Minneapolis-St Paul International (MSP) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.