Flight number record

DL 2303

Delta Air Lines · Boston to Minneapolis

Route: BOS → MSP
Departs: 05:50
Flights: 353
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2303, check with Delta Air Lines.

DL 2303 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 17 points better than the national rate of 77.6%. When something does go wrong the average delay runs close to two hours. That rests on 353 flights, with a median arrival 14 minutes early.

Set against the rest of the country, DL 2303's record is 17 points better than the US average of 77.6%. That gap is worth roughly 172 fewer late arrivals for every thousand flights.

On time

94.8%

Arrivals under 15 minutes late, of 346 completed flights

Avg delay

109 min

Across delayed arrivals only, not all flights

Cancelled

1.98%

National rate is 1.81%

1 hour+ late

1.7%

National rate is 8.1%

These figures cover 353 flights between July 2025 and June 2026. The median arrival is 14 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.

Schedule

When DL 2303 flies

DL 2303 flies BOS to MSP without a single fixed slot. Its most common scheduled departure was 05:50, used on 133 of 353 flights, with 05:45 (88 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 05:50133 flights37.7%
Departs 05:4588 flights24.9%

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 05:50 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and DL 2303 runs 6 points better at 94.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

DL 2303 next to BOS to MSP

Every carrier on BOS to MSP combined arrived on time 83.1% of the time across 1,851 flights, so DL 2303 is 12 points ahead of it. Across its whole network Delta Air Lines managed 81.6%, which this flight beats by 13 points.

DL 2303 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2303thin sample	353	94.8%	109 min	1.98%	A
All Delta Air Lines on BOS–MSP	1,851	83.1%	63 min	1.19%	B
All carriers on BOS–MSP	1,851	83.1%	63 min	1.19%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2303 quarter by quarter

Quarter by quarter DL 2303 held fairly steady: 95.7% in Jul–Sep 2025, 93.4% in Oct–Dec 2025, 91.7% in Jan–Mar 2026 and 97.8% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights95.7%
Oct–Dec 202592 flights93.4%
Jan–Mar 202678 flights91.7%
Apr–Jun 202691 flights97.8%

Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2303 ranged from 91.3% on Monday to 98.1% on Thursday. With about 50 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why DL 2303 runs late

One category carries most of the weight here. Carrier accounts for 59% of the 1,967 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
59%
Late-arriving aircraft
28%
National Airspace System
13%

The largest share of delay minutes, 59%, 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 1,165 of the 1,967 delay minutes reported here. The split is drawn from 1,967 delay minutes reported on DL 2303.

Cancellations sit at 1.98% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 1.7% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

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 353 flights under DL 2303 in the data flew BOS to MSP. 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. 353 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 2303

For a booking, read DL 2303 as 94.8% on time with 1.98% cancelled over 353 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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