Flight number record

DL 2488

Delta Air Lines · Minneapolis to Boise

Route: MSP → BOI
Departs: 21:59
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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. 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 364 flights, with a median arrival 1 minute early.

The national on-time rate over the same period is 77.6%, so DL 2488 runs 7 points behind the country as a whole. Across a thousand flights that is about 74 extra late arrivals.

On time

70.2%

Arrivals under 15 minutes late, of 359 completed flights

Avg delay

60 min

Across delayed arrivals only, not all flights

Cancelled

1.10%

National rate is 1.81%

1 hour+ late

8.6%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 8.6% 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 2488 flies

DL 2488 flies MSP to BOI without a single fixed slot. Its most common scheduled departure was 21:59, used on 98 of 364 flights, with 18:45 (62 flights) and 21:54 (62 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:5998 flights26.9%
Departs 18:4562 flights17.0%
Departs 21:5462 flights17.0%

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 21:59 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 2488 runs level with that at 70.2%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

DL 2488 next to MSP to BOI

Every carrier on MSP to BOI combined arrived on time 78.8% of the time across 786 flights, so DL 2488 is 9 points behind it. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 11 points.

DL 2488 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2488thin sample	364	70.2%	60 min	1.10%	C
All Delta Air Lines on MSP–BOI	786	78.8%	57 min	0.64%	B+
All carriers on MSP–BOI	786	78.8%	57 min	0.64%	B+
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2488 quarter by quarter

DL 2488 did not run the same all year. Its best quarter was Oct–Dec 2025 at 76.4% on time and its weakest Jul–Sep 2025 at 63.7%, a swing of 13 points on roughly 91 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 202591 flights76.4%
Jan–Mar 202690 flights66.3%
Apr–Jun 202691 flights74.4%

Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2488 did best on Saturday at 82.7% on time and worst on Thursday at 62.0%. Each day rests on about 52 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2488 runs late

One category carries most of the weight here. Carrier accounts for 57% of the 6,453 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.

Carrier
57%
Late-arriving aircraft
24%
National Airspace System
17%
Extreme weather
2%

The largest share of delay minutes, 57%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,682 of the 6,453 delay minutes reported here. The split is drawn from 6,453 delay minutes reported on DL 2488.

Cancellations sit at 1.10% against a national 1.81%, which is ordinary. Diversions add another 0.27%.

Connections and routes

What a delay on this flight costs

8.6% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says 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. 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 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: 9 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.

Where to go next

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.

Key figures