Flight number record

DL 2234

Delta Air Lines · Boston to Tampa

Route: BOS → TPA
Departs: 20:15
Flights: 285
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2234, check with Delta Air Lines.

DL 2234 draws a D+. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 285 flights, with a median arrival 2 minutes early.

The national on-time rate over the same period is 77.6%, so DL 2234 runs 14 points behind the country as a whole. Across a thousand flights that is about 142 extra late arrivals.

On time

63.4%

Arrivals under 15 minutes late, of 284 completed flights

Avg delay

66 min

Across delayed arrivals only, not all flights

Cancelled

0.35%

National rate is 1.81%

1 hour+ late

16.9%

National rate is 8.1%

These figures cover 285 flights between July 2025 and June 2026. Beyond the headline rate, 16.9% 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 2234 flies

DL 2234 flies BOS to TPA without a single fixed slot. Its most common scheduled departure was 20:15, used on 40 of 285 flights, with 19:50 (36 flights) and 20:20 (33 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:1540 flights14.0%
Departs 19:5036 flights12.6%
Departs 20:2033 flights11.6%

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 20:15 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 2234 runs 7 points worse at 63.4%. 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 2234 next to BOS to TPA

Every carrier on BOS to TPA combined arrived on time 74.8% of the time across 2,822 flights, so DL 2234 is 11 points behind it. Delta flew 1,168 flights on the same city pair under all its flight numbers, including this one, and those ran 75.7% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 18 points.

DL 2234 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2234thin sample	285	63.4%	66 min	0.35%	D+
All Delta Air Lines on BOS–TPA	1,168	75.7%	78 min	1.97%	B
All carriers on BOS–TPA	2,822	74.8%	71 min	2.48%	C
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2234 quarter by quarter

DL 2234 did not run the same all year. Its best quarter was Apr–Jun 2026 at 76.7% on time and its weakest Oct–Dec 2025 at 51.8%, a swing of 25 points on roughly 95 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 202583 flights56.6%
Oct–Dec 202585 flights51.8%
Jan–Mar 202626 flights—
Apr–Jun 202691 flights76.7%

Scale runs 45% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2234 did best on Saturday at 81.1% on time and worst on Sunday at 41.9%. Each day rests on about 41 flights, so a gap of 39 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2234 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 64% of the 6,909 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
64%
Carrier
23%
National Airspace System
13%

64% 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 6,909 reported delay minutes here, that single category outweighs weather by 64 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 6,909 delay minutes reported on DL 2234.

Cancellations are rare at 0.35%, 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 16.9% 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 1,185 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.

The same number turns up on one other city pair in the data, including ATL to JAN (1), but none flew often enough under DL 2234 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to TPA only.

One caution: this is a thin sample. 285 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 2234

For a booking, DL 2234 is a flight to put a long connection behind. 16.9% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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