Flight number record

AA 1921

American Airlines · Miami to Tampa

Route: MIA → TPA
Departs: 20:50
Flights: 321
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s AA 1921, check with American Airlines.

AA 1921 draws a D+. Roughly one flight in two arrives at least 15 minutes late, and the typical late arrival is close to two hours behind schedule. Build slack into anything you connect to. That rests on 321 flights, with a median arrival 4 minutes late.

The national on-time rate over the same period is 77.6%, so AA 1921 runs 19 points behind the country as a whole. Across a thousand flights that is about 190 extra late arrivals.

On time

58.6%

Arrivals under 15 minutes late, of 319 completed flights

Avg delay

102 min

Across delayed arrivals only, not all flights

Cancelled

0.62%

National rate is 1.81%

1 hour+ late

23.5%

National rate is 8.1%

These figures cover 321 flights between July 2025 and June 2026. Beyond the headline rate, 23.5% 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 AA 1921 flies

AA 1921 flies MIA to TPA without a single fixed slot. Its most common scheduled departure was 20:50, used on 66 of 321 flights, with 20:53 (63 flights) and 20:40 (61 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:5066 flights20.6%
Departs 20:5363 flights19.6%
Departs 20:4061 flights19.0%

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 20:50 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and AA 1921 runs 12 points worse at 58.6%. 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

AA 1921 next to MIA to TPA

Every carrier on MIA to TPA combined arrived on time 70.6% of the time across 2,947 flights, so AA 1921 is 12 points behind it. American flew 2,569 flights on the same city pair under all its flight numbers, including this one, and those ran 69.2% on time. Across its whole network American Airlines managed 74.4%, which this flight trails by 16 points.

AA 1921 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
AA 1921thin sample	321	58.6%	102 min	0.62%	D+
All American Airlines on MIA–TPA	2,569	69.2%	81 min	0.82%	C+
All carriers on MIA–TPA	2,947	70.6%	79 min	1.15%	C
American Airlines, whole network	986,297	74.4%	85 min	2.29%	C

Across the year

AA 1921 quarter by quarter

AA 1921 did not run the same all year. Its best quarter was Oct–Dec 2025 at 65.2% on time and its weakest Apr–Jun 2026 at 53.2%, a swing of 12 points on roughly 80 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 flights57.6%
Oct–Dec 202592 flights65.2%
Jan–Mar 202690 flights55.7%
Apr–Jun 202647 flights53.2%

Scale runs 45% to 70%. Rows with fewer than 30 flights show a dash.

By weekday, AA 1921 did best on Wednesday at 66.7% on time and worst on Sunday at 48.9%. Each day rests on about 46 flights, so a gap of 18 points is worth noticing but could still narrow in another year.

Delay causes

Why AA 1921 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 52% of the 13,000 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
52%
Carrier
34%
National Airspace System
8%
Extreme weather
6%

52% 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 13,000 reported delay minutes here, that single category outweighs weather by 8 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 13,407 delay minutes reported on AA 1921.

Cancellations are rare at 0.62%, 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. 23.5% 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 same number turns up on one other city pair in the data, including DCA to JAX (44), but none flew often enough under AA 1921 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MIA to TPA only.

One caution: this is a thin sample. 321 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 AA 1921

For a booking, AA 1921 is a flight to put a long connection behind. 23.5% 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 American Airlines’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