Flight number record
DL 2558
Delta Air Lines · Minneapolis to Boston
- Route
- MSP → BOS
- Departs
- 13:20
- Flights
- 287
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2558, check with Delta Air Lines.
DL 2558 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 7 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 287 flights, with a median arrival 6 minutes early.
The national on-time rate over the same period is 77.6%, so DL 2558 runs 7 points behind the country as a whole. Across a thousand flights that is about 74 extra late arrivals.
Key figures
On time
70.2%
Arrivals under 15 minutes late, of 285 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
0.35%
National rate is 1.81%
1 hour+ late
9.8%
National rate is 8.1%
These figures cover 287 flights between July 2025 and June 2026. Beyond the headline rate, 9.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Schedule
When DL 2558 flies
DL 2558 flies MSP to BOS without a single fixed slot. Its most common scheduled departure was 13:20, used on 96 of 287 flights, with 13:15 (54 flights) and 12:45 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 13:2096 flights33.4%
- Departs 13:1554 flights18.8%
- Departs 12:4535 flights12.2%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 13:20 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 2558 runs 9 points worse at 70.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
Against the route
DL 2558 next to MSP to BOS
Every carrier on MSP to BOS combined arrived on time 78.1% of the time across 1,847 flights, so DL 2558 is 8 points behind it. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2558thin sample | 287 | 70.2% | 59 min | 0.35% | C+ |
| All Delta Air Lines on MSP–BOS | 1,847 | 78.1% | 60 min | 1.08% | B |
| All carriers on MSP–BOS | 1,847 | 78.1% | 60 min | 1.08% | B |
| Delta Air Lines, whole network | 1,038,570 | 81.6% | 71 min | 1.62% | B |
Across the year
DL 2558 quarter by quarter
DL 2558 did not run the same all year. Its best quarter was Apr–Jun 2026 at 77.1% on time and its weakest Jul–Sep 2025 at 63.7%, a swing of 13 points on roughly 96 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202592 flights63.7%
- Oct–Dec 202588 flights64.8%
- Jan–Mar 202624 flights—
- Apr–Jun 202683 flights77.1%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, DL 2558 did best on Saturday at 83.9% on time and worst on Thursday at 60.0%. Each day rests on about 41 flights, so a gap of 24 points is worth noticing but could still narrow in another year.
Delay causes
Why DL 2558 runs late
One category carries most of the weight here. National Airspace System accounts for 67% of the 5,040 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 67%National Airspace System
- 24%Carrier
- 9%Late-arriving aircraft
67% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 3,357 minutes out of 5,040, against a national NAS share of 21%. The split is drawn from 5,040 delay minutes reported on DL 2558.
Cancellations are rare at 0.35%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.8% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 1,124 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
Every one of the 287 flights under DL 2558 in the data flew MSP to BOS. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 287 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 DL 2558
For a booking, DL 2558 is one of the weaker ways to fly MSP to BOS: 8 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- MSP to BOS, every carrier and departure
- BOS to MSP, the return direction
- Delta Air Lines 2591 on the same route67.1%
- Delta Air Lines 2655 on the same route81.8%
- Delta Air Lines 2649 on the same route92.6%
- Delta Air Lines 2614 on the same route79.3%
- Minneapolis-St Paul International (MSP) delay statistics
- Boston Logan International (BOS) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- How often a connection fails at the major US hubs
A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.