Flight number record
B6 1979
JetBlue Airways · Washington to Fort Lauderdale
- Route
- DCA → FLL
- Departs
- 20:55
- Flights
- 318
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 56.4% of flights arrive inside the 15-minute window, 21 points worse than the national rate of 77.3%. Late arrivals average an hour and a half. Treat any tight connection here as a coin flip. That rests on 318 flights, with a median arrival 7 minutes late.
The national on-time rate over the same period is 77.3%, so B6 1979 runs 21 points behind the country as a whole. Across a thousand flights that is about 209 extra late arrivals.
Key figures
On time
56.4%
Arrivals under 15 minutes late, of 307 completed flights
Avg delay
88 min
Across delayed arrivals only, not all flights
Cancelled
3.46%
National rate is 1.89%
1 hour+ late
22.8%
National rate is 8.3%
These figures cover 318 flights between September 2025 and August 2026. Beyond the headline rate, 22.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When B6 1979 flies
B6 1979 flies DCA to FLL without a single fixed slot. Its most common scheduled departure was 20:55, used on 54 of 318 flights, with 20:10 (40 flights) and 18:59 (38 flights) next.
- Departs 20:5554 flights17.0%
- Departs 20:1040 flights12.6%
- Departs 18:5938 flights11.9%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 20:55 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and B6 1979 runs 14 points worse at 56.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
B6 1979 next to DCA to FLL
Every carrier on DCA to FLL combined arrived on time 67.7% of the time across 2,320 flights, so B6 1979 is 11 points behind it. JetBlue flew 1,380 flights on the same city pair under all its flight numbers, including this one, and those ran 68.1% on time. Across its whole network JetBlue Airways managed 71.3%, which this flight trails by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| B6 1979thin sample | 318 | 56.4% | 88 min | 3.46% | D− |
| All JetBlue Airways on DCA–FLL | 1,380 | 68.1% | 80 min | 3.48% | C− |
| All carriers on DCA–FLL | 2,320 | 67.7% | 74 min | 2.80% | C |
| JetBlue Airways, whole network | 240,615 | 71.3% | 77 min | 3.56% | 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 Jul–Sep 2026 at 46.3%, a swing of 23 points on roughly 64 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 202530 flights60.0%
- Oct–Dec 202579 flights54.4%
- Jan–Mar 202677 flights52.6%
- Apr–Jun 202671 flights69.1%
- Jul–Sep 202661 flights46.3%
Scale runs 40% to 75%.
By weekday, B6 1979 did best on Wednesday at 70.0% on time and worst on Sunday at 51.0%. Each day rests on about 45 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late B6 1979 runs when it is late
When B6 1979 is late it tends to be very late: 70 of its 134 late arrivals were an hour or more behind, and 33 were two hours or more.
- 15+ min early72 flights23.5%
- Within 15 min101 flights32.9%
- 15–29 min late35 flights11.4%
- 30–59 min late29 flights9.4%
- 1–2 hours late37 flights12.1%
- 2+ hours late33 flights10.7%
Scale runs 0% to 100%.
Share of 307 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 128 departures that left 15 minutes late or more, only 15 made it up before arrival. In the other direction, 21 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at FLL.
The worst days
Worst days for B6 1979
The latest arrival of the period was on 26 January 2026, 6 hours 46 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 January 2026 | 6 hours 46 minutes | Late-arriving aircraft |
| 12 June 2026 | 6 hours 43 minutes | Late-arriving aircraft |
| 21 July 2026 | 6 hours 1 minute | Late-arriving aircraft |
| 29 December 2025 | 4 hours 58 minutes | Late-arriving aircraft |
| 16 March 2026 | 4 hours 54 minutes | National Airspace System |
Delay causes
Why B6 1979 runs late
Late-arriving aircraft accounts for 68% of the 12,000 delay minutes carriers reported here, and the remaining four split what is left.
- 68%Late-arriving aircraft
- 16%Carrier
- 15%National Airspace System
- 1%Extreme weather
68% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 12,000 reported delay minutes here, that single category outweighs weather by 55 to one. The split is drawn from 11,728 delay minutes reported on B6 1979.
Cancellations run at 3.46%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
22.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.
Every one of the 318 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. 318 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, the cancellation rate is the figure to plan around on B6 1979: 3.46% of its 318 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- DCA to FLL, every carrier and departure
- FLL to DCA, the return direction
- JetBlue Airways 579 on the same route81.5%
- JetBlue Airways 379 on the same route77.1%
- JetBlue Airways 1579 on the same route57.2%
- Ronald Reagan Washington National (DCA) delay statistics
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- JetBlue Airways on-time record
- Every JetBlue Airways flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.