Carrier route record

B6FLL→AUS

JetBlue Airways · Fort Lauderdale to Austin

Flights: 370
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 FLL to AUS earns an F+, which is as low as this site's scale goes for a reason. Only 47.3% of flights arrive inside the 15-minute window, 30 points worse than the national rate of 77.6%. Late arrivals average about an hour. Treat any tight connection here as a coin flip. That rests on 370 flights. The strongest carrier on the route with a full sample, Southwest Airlines, flew 372 at 73.0% on time.

The national on-time rate over the same period is 77.6%, so JetBlue on FLL to AUS runs 30 points behind the country as a whole. Across a thousand flights that is about 303 extra late arrivals.

On time

47.3%

Arrivals under 15 minutes late, of 364 completed flights

Avg delay

58 min

Across delayed arrivals only, not all flights

Cancelled

0.81%

National rate is 1.81%

Whole route

60.7%

Every carrier on FLL to AUS, 1,116 flights

These figures cover 370 flights between July 2025 and June 2026. Beyond the headline rate, 17.6% 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 FLL to AUS

JetBlue flew 370 of the 1,116 flights on FLL to AUS, about 33% of it. Its 47.3% on time is 13 points worse than the route as a whole, which runs 60.7%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Southwest at 73.0% to JetBlue at 47.3%.

The choice of carrier is not cosmetic here. Southwest Airlines arrives on time 73.0% of the time; Spirit Airlines manages 61.6%. Sample sizes sit next to every figure, because a two-point gap across 374 flights means less than a ten-point one.

On-time performance by carrier on FLL to AUS
Airline	Flights	On time	Avg delay	Cancelled	Grade
Southwest Airlines	372	73.0%	55 min	0.27%	C+
Spirit Airlines	374	61.6%	70 min	6.68%	D−
JetBlue Airways (this page)	370	47.3%	58 min	0.81%	F+

Spirit Airlines cancels 6.7% 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 is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 370 flights.

5am–8am—
8am–11am17 flights—
11am–2pm120 flights42.0%
2pm–5pm11 flights—
5pm–8pm—
8pm–5am222 flights45.9%

Scale runs 35% to 50%. Rows with fewer than 30 flights show a dash.

The overnight block holds up unusually well at 45.9% on time across 222 flights. Red-eyes fly into empty airspace and empty gates, and they are the first rotation of the aircraft's day rather than the last. The 8pm–5am window is the busiest, with 222 flights scheduled in it.

Across the year

JetBlue on FLL to AUS through the year

Oct–Dec 202575 flights45.3%
Jan–Mar 2026136 flights28.6%
Apr–Jun 2026159 flights64.1%

Scale runs 20% to 70%. 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 47.3% on time across 370 flights.

JetBlue on FLL to AUS did not run the same all year. Its best quarter was Apr–Jun 2026 at 64.1% on time and its weakest Jan–Mar 2026 at 28.6%, a swing of 35 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 60.5% on time and Friday the weakest at 41.4%. 19 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 11,000 reported delay minutes.

Late-arriving aircraft
36%
National Airspace System
33%
Carrier
31%
Extreme weather
1%
Security
0%

36% 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 11,000 reported delay minutes here, that single category outweighs weather by 36 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 11,117 reported delay minutes.

33% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 3,629 minutes out of 11,000, against a national NAS share of 21%.

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. 17.6% 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 71.0% on time across 369 flights, 24 points above 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. 370 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 AUS

Put together: treat all of this as provisional. 370 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 47.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 364 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