Flight number record
DL 2488
Delta Air Lines · Minneapolis to Boise
- Route
- MSP → BOI
- Departs
- 18:45
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 2488, check with Delta Air Lines.
DL 2488 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 364 flights, with a median arrival 2 minutes early.
Key figures
On time
74.7%
Arrivals under 15 minutes late, of 360 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
0.82%
National rate is 1.89%
1 hour+ late
6.9%
National rate is 8.3%
These figures cover 364 flights between September 2025 and August 2026. The median arrival is 2 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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Schedule
When DL 2488 flies
DL 2488 flies MSP to BOI without a single fixed slot. Its most common scheduled departure was 18:45, used on 66 of 364 flights, with 21:59 (63 flights) and 21:40 (59 flights) next.
- Departs 18:4566 flights18.1%
- Departs 21:5963 flights17.3%
- Departs 21:4059 flights16.2%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 18:45 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and DL 2488 runs 7 points better at 74.7%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
DL 2488 next to MSP to BOI
Every carrier on MSP to BOI combined arrived on time 80.7% of the time across 774 flights, so DL 2488 is 6 points behind it. Across its whole network Delta Air Lines managed 81.1%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 2488thin sample | 364 | 74.7% | 62 min | 0.82% | C+ |
| All Delta Air Lines on MSP–BOI | 774 | 80.7% | 57 min | 0.52% | B+ |
| All carriers on MSP–BOI | 774 | 80.7% | 57 min | 0.52% | B+ |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 2488 quarter by quarter
DL 2488 did not run the same all year. Its best quarter was Jul–Sep 2026 at 82.3% on time and its weakest Jan–Mar 2026 at 66.3%, a swing of 16 points on roughly 73 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 202530 flights80.0%
- Oct–Dec 202591 flights76.4%
- Jan–Mar 202690 flights66.3%
- Apr–Jun 202691 flights74.4%
- Jul–Sep 202662 flights82.3%
Scale runs 60% to 90%.
By weekday, DL 2488 did best on Tuesday at 82.7% on time and worst on Sunday at 70.0%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 2488 runs when it is late
The 91 late arrivals split 34 under half an hour, 32 between 30 and 60 minutes, and 25 an hour or more.
- 15+ min early74 flights20.6%
- Within 15 min195 flights54.2%
- 15–29 min late34 flights9.4%
- 30–59 min late32 flights8.9%
- 1–2 hours late16 flights4.4%
- 2+ hours late9 flights2.5%
Scale runs 0% to 100%.
Share of 360 completed flights by arrival against schedule.
19 of 86 late departures made up the time and arrived on time, 22% of them. In the other direction, 24 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at BOI.
The worst days
Worst days for DL 2488
The latest arrival of the period was on 16 October 2025, 9 hours 48 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 |
|---|---|---|
| 16 October 2025 | 9 hours 48 minutes | Carrier |
| 8 December 2025 | 9 hours 45 minutes | Carrier |
| 17 March 2026 | 2 hours 42 minutes | Carrier |
| 26 January 2026 | 2 hours 32 minutes | Carrier |
| 24 February 2026 | 2 hours 26 minutes | Late-arriving aircraft |
Delay causes
Why DL 2488 runs late
Carrier accounts for 63% of the 5,637 delay minutes carriers reported here, and the remaining four split what is left.
- 63%Carrier
- 20%Late-arriving aircraft
- 16%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 63%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,548 of the 5,637 delay minutes reported here. The split is drawn from 5,637 delay minutes reported on DL 2488.
Cancellations are rare at 0.82%, below the national 1.89% 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
6.9% 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 about an hour, which a normal layover absorbs.
The 1,142 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.
Every one of the 364 flights under DL 2488 in the data flew MSP to BOI. 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. 364 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 2488
For a booking, DL 2488 is one of the weaker ways to fly MSP to BOI: 6 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 BOI, every carrier and departure
- BOI to MSP, the return direction
- Delta Air Lines 2982 on the same route85.2%
- Minneapolis-St Paul International (MSP) 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
- Worst months to fly in the US, ranked by the data
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.