Flight number record

DL 2222

Delta Air Lines · Boston to Detroit

Route: BOS → DTW
Departs: 13:05
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2222, check with Delta Air Lines.

DL 2222 lands a B, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 364 flights, with a median arrival 7 minutes early.

On time

79.8%

Arrivals under 15 minutes late, of 356 completed flights

Avg delay

85 min

Across delayed arrivals only, not all flights

Cancelled

1.92%

National rate is 1.81%

1 hour+ late

9.0%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 9.0% 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 2222 flies

DL 2222 flies BOS to DTW without a single fixed slot. Its most common scheduled departure was 13:05, used on 74 of 364 flights, with 13:00 (61 flights) and 13:10 (58 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:0574 flights20.3%
Departs 13:0061 flights16.8%
Departs 13:1058 flights15.9%

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 13:05 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and DL 2222 runs level with that at 79.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 2222 next to BOS to DTW

Every carrier on BOS to DTW combined arrived on time 77.6% of the time across 2,591 flights, so DL 2222 is 2 points ahead of it. Delta flew 1,712 flights on the same city pair under all its flight numbers, including this one, and those ran 79.6% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 2 points.

DL 2222 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2222thin sample	364	79.8%	85 min	1.92%	B
All Delta Air Lines on BOS–DTW	1,712	79.6%	77 min	2.04%	B
All carriers on BOS–DTW	2,591	77.6%	75 min	2.12%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2222 quarter by quarter

Quarter by quarter DL 2222 held fairly steady: 77.8% in Jul–Sep 2025, 78.0% in Oct–Dec 2025, 81.2% in Jan–Mar 2026 and 82.2% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights77.8%
Oct–Dec 202591 flights78.0%
Jan–Mar 202690 flights81.2%
Apr–Jun 202691 flights82.2%

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2222 did best on Wednesday at 86.5% on time and worst on Monday at 71.4%. Each day rests on about 52 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2222 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 46% of the 6,116 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.

Late-arriving aircraft
46%
Carrier
41%
National Airspace System
13%
Extreme weather
0%

46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 6,116 reported delay minutes here, that single category outweighs weather by 46 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 6,116 delay minutes reported on DL 2222.

Cancellations sit at 1.92% against a national 1.81%, which is ordinary. Diversions add another 0.27%.

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. 9.0% 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 632 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 2222 in the data flew BOS to DTW. 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 2222

For a booking, read DL 2222 as 79.8% on time with 1.92% cancelled over 364 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