Flight number record

DL 2126

Delta Air Lines · Detroit to Nashville

Route: DTW → BNA
Departs: 20:19
Flights: 364
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s DL 2126, check with Delta Air Lines.

DL 2126 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 4 minutes early.

The national on-time rate over the same period is 77.6%, so DL 2126 runs 7 points behind the country as a whole. Across a thousand flights that is about 70 extra late arrivals.

On time

70.6%

Arrivals under 15 minutes late, of 361 completed flights

Avg delay

61 min

Across delayed arrivals only, not all flights

Cancelled

0.82%

National rate is 1.81%

1 hour+ late

11.4%

National rate is 8.1%

These figures cover 364 flights between July 2025 and June 2026. Beyond the headline rate, 11.4% 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 2126 flies

DL 2126 flies DTW to BNA without a single fixed slot. Its most common scheduled departure was 20:19, used on 47 of 364 flights, with 19:45 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:1947 flights12.9%
Departs 19:4538 flights10.4%

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 20:19 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and DL 2126 runs level with that at 70.6%. 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 2126 next to DTW to BNA

Every carrier on DTW to BNA combined arrived on time 78.7% of the time across 2,417 flights, so DL 2126 is 8 points behind it. Delta flew 1,403 flights on the same city pair under all its flight numbers, including this one, and those ran 79.5% on time. Across its whole network Delta Air Lines managed 81.6%, which this flight trails by 11 points.

DL 2126 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
DL 2126thin sample	364	70.6%	61 min	0.82%	C+
All Delta Air Lines on DTW–BNA	1,403	79.5%	61 min	1.85%	B
All carriers on DTW–BNA	2,417	78.7%	54 min	1.37%	B
Delta Air Lines, whole network	1,038,570	81.6%	71 min	1.62%	B

Across the year

DL 2126 quarter by quarter

DL 2126 did not run the same all year. Its best quarter was Apr–Jun 2026 at 80.2% on time and its weakest Jan–Mar 2026 at 62.5%, a swing of 18 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 flights70.3%
Oct–Dec 202591 flights69.2%
Jan–Mar 202690 flights62.5%
Apr–Jun 202691 flights80.2%

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, DL 2126 did best on Friday at 76.9% on time and worst on Sunday at 58.8%. Each day rests on about 52 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

Delay causes

Why DL 2126 runs late

One category carries most of the weight here. Carrier accounts for 44% of the 6,411 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
44%
Late-arriving aircraft
31%
National Airspace System
24%
Extreme weather
1%

The largest share of delay minutes, 44%, 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 2,814 of the 6,411 delay minutes reported here. The split is drawn from 6,411 delay minutes reported on DL 2126.

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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.4% 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.

Every one of the 364 flights under DL 2126 in the data flew DTW to BNA. 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 2126

For a booking, DL 2126 is one of the weaker ways to fly DTW to BNA: 8 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