Carrier route record
B6FLL→SFO
JetBlue Airways · Fort Lauderdale to San Francisco
- Flights
- 774
- Period
- July 2025 to June 2026
- Share of route
- 61%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on FLL to SFO lands a B+, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 774 flights, with a median arrival 6 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate JetBlue on FLL to SFO from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.7%
Arrivals under 15 minutes late, of 769 completed flights
Avg delay
56 min
Across delayed arrivals only, not all flights
Cancelled
0.52%
National rate is 1.81%
Whole route
79.5%
Every carrier on FLL to SFO, 1,265 flights
These figures cover 774 flights between July 2025 and June 2026. The median arrival is 6 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
JetBlue against every carrier on FLL to SFO
JetBlue flew 774 of the 1,265 flights on FLL to SFO, most of the route. Its 76.7% on time is 3 points worse than the route as a whole, which runs 79.5%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 83.8% to JetBlue at 76.7%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 491 | 83.8% | 61 min | 0.41% | B+ |
| JetBlue Airways (this page) | 774 | 76.7% | 56 min | 0.52% | B+ |
Flight by flight
JetBlue flight numbers on FLL to SFO
Departure window
When JetBlue runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 27 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am310 flights90.3%
- 8am–11am99 flights83.7%
- 11am–2pm—
- 2pm–5pm—
- 5pm–8pm19 flights—
- 8pm–5am346 flights63.0%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 63.0% on time, against 90.3% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8pm–5am window is the busiest, with 346 flights scheduled in it.
Across the year
JetBlue on FLL to SFO through the year
June is the worst month at 63.3% on time, 22 points below May, the best at 85.5%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. July was the busiest month here, with 82 flights.
Across the week, Wednesday is the strongest day at 84.4% on time and Friday the weakest at 70.3%. 14 points is a smaller lever than departure hour, but it is free.
Delay causes
Why JetBlue runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 10,000 reported delay minutes.
- 40%Late-arriving aircraft
- 31%National Airspace System
- 27%Carrier
- 2%Extreme weather
- 1%Security
40% 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 27 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 10,036 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 90.3% on time here.
Cancellations are rare at 0.52%, 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 stage length
What a delay here costs
7.4% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
At 2,584 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg runs 78.2% on time across 777 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 774 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 JetBlue on FLL to SFO
Put together: treat all of this as provisional. 774 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 76.7% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 769 completed flights over 12 months sit behind that.
Related
Where to go next
- FLL to SFO, every carrier
- JetBlue on SFO to FLL, the return leg
- United Airlines on FLL to SFO83.8%
- JetBlue Airways network-wide record
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- San Francisco International (SFO) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.