Flight number record

DL 322

Delta Air Lines · Boston to Atlanta

Route: BOS → ATL
Departs: 14:00
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 322, check with Delta Air Lines.

DL 322 lands a B+, 4 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 364 flights, with a median arrival 5 minutes early.

Set against the rest of the country, DL 322's record is 4 points better than the US average of 77.6%. That gap is worth roughly 44 fewer late arrivals for every thousand flights.

On time

82.0%

Arrivals under 15 minutes late, of 361 completed flights

Avg delay

68 min

Across delayed arrivals only, not all flights

Cancelled

0.82%

National rate is 1.81%

1 hour+ late

6.4%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. The median arrival is 5 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 322 flies

DL 322 flies BOS to ATL without a single fixed slot. Its most common scheduled departure was 14:00, used on 84 of 364 flights, with 13:45 (48 flights) and 13:30 (42 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:0084 flights23.1%
Departs 13:4548 flights13.2%
Departs 13:3042 flights11.5%

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 14:00 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and DL 322 runs 10 points better at 82.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

DL 322 next to BOS to ATL

Every carrier on BOS to ATL combined arrived on time 78.5% of the time across 4,931 flights, so DL 322 is 4 points ahead of it. Delta flew 3,662 flights on the same city pair under all its flight numbers, including this one, and those ran 82.1% on time. Across its whole network Delta Air Lines managed 81.6%, close to this flight's figure.

DL 322 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 322thin sample	364	82.0%	68 min	0.82%	B+
All Delta Air Lines on BOS–ATL	3,662	82.1%	75 min	1.77%	B
All carriers on BOS–ATL	4,931	78.5%	69 min	1.99%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 322 quarter by quarter

Quarter by quarter DL 322 held fairly steady: 87.0% in Jul–Sep 2025, 78.3% in Oct–Dec 2025, 80.2% in Jan–Mar 2026 and 82.4% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights87.0%
Oct–Dec 202592 flights78.3%
Jan–Mar 202689 flights80.2%
Apr–Jun 202691 flights82.4%

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

By weekday, DL 322 did best on Wednesday at 92.3% on time and worst on Sunday at 72.5%. Each day rests on about 52 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 322 runs late

One category carries most of the weight here. Carrier accounts for 56% of the 4,417 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
56%
Late-arriving aircraft
26%
National Airspace System
18%

The largest share of delay minutes, 56%, 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 2,463 of the 4,417 delay minutes reported here. The split is drawn from 4,417 delay minutes reported on DL 322.

Cancellations are rare at 0.82%, 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

6.4% 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 a little over an hour, which a normal layover absorbs.

The 946 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 322 in the data flew BOS to ATL. 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 322

For a booking, read DL 322 as 82.0% on time with 0.82% 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