Flight number record

B6 1979

JetBlue Airways · Washington to Fort Lauderdale

Route: DCA → FLL
Departs: 20:12
Flights: 296
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s B6 1979, check with JetBlue Airways.

B6 1979 earns a D, which is as low as this site's scale goes for a reason. Only 57.2% of flights arrive inside the 15-minute window, 20 points worse than the national rate of 77.6%. Late arrivals average an hour and a half. Treat any tight connection here as a coin flip. That rests on 296 flights, with a median arrival 6 minutes late.

The national on-time rate over the same period is 77.6%, so B6 1979 runs 20 points behind the country as a whole. Across a thousand flights that is about 204 extra late arrivals.

On time

57.2%

Arrivals under 15 minutes late, of 290 completed flights

Avg delay

84 min

Across delayed arrivals only, not all flights

Cancelled

2.03%

National rate is 1.81%

1 hour+ late

20.3%

National rate is 8.1%

These figures cover 296 flights between July 2025 and June 2026. Beyond the headline rate, 20.3% 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 B6 1979 flies

B6 1979 flies DCA to FLL without a single fixed slot. Its most common scheduled departure was 20:12, used on 40 of 296 flights, with 18:59 (38 flights) and 20:10 (34 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 20:1240 flights13.5%
Departs 18:5938 flights12.8%
Departs 20:1034 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 20:12 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and B6 1979 runs 13 points worse at 57.2%. 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

B6 1979 next to DCA to FLL

Every carrier on DCA to FLL combined arrived on time 68.3% of the time across 2,302 flights, so B6 1979 is 11 points behind it. JetBlue flew 1,361 flights on the same city pair under all its flight numbers, including this one, and those ran 68.7% on time. Across its whole network JetBlue Airways managed 72.7%, which this flight trails by 16 points.

B6 1979 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 1979thin sample	296	57.2%	84 min	2.03%	D
All JetBlue Airways on DCA–FLL	1,361	68.7%	78 min	2.42%	C
All carriers on DCA–FLL	2,302	68.3%	71 min	2.00%	C
JetBlue Airways, whole network	234,468	72.7%	76 min	2.56%	C

Across the year

B6 1979 quarter by quarter

B6 1979 did not run the same all year. Its best quarter was Apr–Jun 2026 at 69.1% on time and its weakest Jan–Mar 2026 at 52.6%, a swing of 16 points on roughly 74 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 202569 flights53.7%
Oct–Dec 202579 flights54.4%
Jan–Mar 202677 flights52.6%
Apr–Jun 202671 flights69.1%

Scale runs 45% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, B6 1979 did best on Wednesday at 75.0% on time and worst on Thursday at 47.9%. Each day rests on about 42 flights, so a gap of 27 points is worth noticing but could still narrow in another year.

Delay causes

Why B6 1979 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 60% of the 10,000 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
60%
Carrier
22%
National Airspace System
17%
Extreme weather
1%

60% 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 10,000 reported delay minutes here, that single category outweighs weather by 47 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 10,462 delay minutes reported on B6 1979.

Cancellations sit at 2.03% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

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. 20.3% 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 899 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 296 flights under B6 1979 in the data flew DCA to FLL. 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. 296 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 B6 1979

For a booking, B6 1979 is a flight to put a long connection behind. 20.3% 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 JetBlue Airways’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