Carrier route record

B6AUS→FLL

JetBlue Airways · Austin to Fort Lauderdale

Flights: 369
Period: July 2025 to June 2026
Share of route: 33%
Carriers: 3

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

JetBlue on AUS to FLL 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 a little over an hour behind schedule. That rests on 369 flights. The strongest carrier on the route with a full sample, Spirit Airlines, flew 375 at 68.1% on time.

The national on-time rate over the same period is 77.6%, so JetBlue on AUS to FLL runs 7 points behind the country as a whole. Across a thousand flights that is about 66 extra late arrivals.

On time

71.0%

Arrivals under 15 minutes late, of 365 completed flights

Avg delay

77 min

Across delayed arrivals only, not all flights

Cancelled

0.81%

National rate is 1.81%

Whole route

67.2%

Every carrier on AUS to FLL, 1,116 flights

These figures cover 369 flights between July 2025 and June 2026. Beyond the headline rate, 9.0% 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.

Carrier by carrier

JetBlue against every carrier on AUS to FLL

JetBlue flew 369 of the 1,116 flights on AUS to FLL, about 33% of it. Its 71.0% on time is 4 points better than the route as a whole, which runs 67.2%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from JetBlue at 71.0% to Southwest at 62.8%.

The two carriers here are closely matched: 5 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.

On-time performance by carrier on AUS to FLL
Airline	Flights	On time	Avg delay	Cancelled	Grade
JetBlue Airways (this page)	369	71.0%	77 min	0.81%	C+
Spirit Airlines	375	68.1%	65 min	5.33%	C−
Southwest Airlines	372	62.8%	47 min	0.54%	D+

Spirit Airlines cancels 5.3% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.

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 38 points, against 5 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am221 flights85.8%
8am–11am—
11am–2pm17 flights—
2pm–5pm120 flights47.9%
5pm–8pm11 flights—
8pm–5am—

Scale runs 40% to 90%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 85.8% of the time, against 47.9% for the afternoon window. That is 38 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 221 flights scheduled in it.

Across the year

JetBlue on AUS to FLL through the year

Oct–Dec 202574 flights57.5%
Jan–Mar 2026136 flights76.1%
Apr–Jun 2026159 flights72.8%

Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 71.0% on time across 369 flights.

JetBlue on AUS to FLL did not run the same all year. Its best quarter was Jan–Mar 2026 at 76.1% on time and its weakest Oct–Dec 2025 at 57.5%, a swing of 19 points on roughly 123 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.

Across the week, Tuesday is the strongest day at 81.6% on time and Wednesday the weakest at 61.5%. 20 points is a smaller lever than departure hour, but it is free.

Delay causes

Why JetBlue runs late on this route

One category carries most of the weight here. Late-arriving aircraft accounts for 48% of the 8,124 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
48%
Carrier
39%
National Airspace System
12%
Extreme weather
0%
Security
0%

48% 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 8,124 reported delay minutes here, that single category outweighs weather by 48 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 8,124 reported delay minutes.

The largest share of delay minutes, 39%, 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 3,165 of the 8,124 delay minutes reported here.

Cancellations are rare at 0.81%, 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.0% 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 1,105 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.

The return leg is a different operation and performs like one: it runs 47.3% on time across 370 flights, 24 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 24 points of difference.

One caution: this is a thin sample. 369 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 AUS to FLL

Put together: treat all of this as provisional. 369 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 71.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 365 completed flights over 12 months sit behind that.

Where to go next

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