Carrier route record
B6FLL→DTW
JetBlue Airways · Fort Lauderdale to Detroit
- Flights
- 108
- Period
- September 2025 to August 2026
- Share of route
- 4%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on FLL to DTW sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.3%. The late ones land a little over an hour behind schedule. That rests on 108 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 1,810 at 78.6% on time.
The national on-time rate over the same period is 77.3%, so JetBlue on FLL to DTW runs 8 points behind the country as a whole. Across a thousand flights that is about 81 extra late arrivals.
Key figures
On time
69.2%
Arrivals under 15 minutes late, of 104 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
3.70%
National rate is 1.89%
Whole route
72.3%
Every carrier on FLL to DTW, 2,705 flights
These figures cover 108 flights between September 2025 and August 2026. Beyond the headline rate, 13.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
JetBlue against every carrier on FLL to DTW
JetBlue flew 108 of the 2,705 flights on FLL to DTW, about 4% of it. Its 69.2% on time is 3 points worse than the route as a whole, which runs 72.3%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Delta at 78.6% to Frontier at 55.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 78.6% of the time; Spirit Airlines manages 58.3%. Sample sizes sit next to every figure, because a two-point gap across 640 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 1,810 | 78.6% | 70 min | 1.55% | B |
| JetBlue Airways (this page)thin sample | 108 | 69.2% | 71 min | 3.70% | C− |
| Spirit Airlines | 640 | 58.3% | 74 min | 3.28% | D− |
| Frontier Airlinesthin sample | 147 | 55.6% | 81 min | 3.40% | D− |
Spirit Airlines cancels 3.3% 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.
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.
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 108 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm54 flights72.5%
- 2pm–5pm—
- 5pm–8pm54 flights66.0%
- 8pm–5am—
Scale runs 60% to 80%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 72.5% on time, ahead of 5pm–8pm at 66.0%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 11am–2pm window is the busiest, with 54 flights scheduled in it.
Across the year
JetBlue on FLL to DTW through the year
- Jul–Sep 2026108 flights69.2%
Scale runs 60% to 75%.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 69.2% on time across 108 flights.
Split by quarter, JetBlue on FLL to DTW logged 108 flights in Jul–Sep 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 69.2% annual figure is the one to use.
Arrival by arrival
How late JetBlue on FLL to DTW runs when it is late
JetBlue on FLL to DTW often beats the schedule: 29 of 104 completed flights, 28%, arrived 15 minutes or more early. The 32 late arrivals split 6 under half an hour, 12 between 30 and 60 minutes, and 14 an hour or more.
- 15+ min early29 flights27.9%
- Within 15 min43 flights41.3%
- 15–29 min late6 flights5.8%
- 30–59 min late12 flights11.5%
- 1–2 hours late10 flights9.6%
- 2+ hours late4 flights3.8%
Scale runs 0% to 100%.
Share of 104 completed flights by arrival against schedule.
8 of 36 late departures made up the time and arrived on time, 22% of them. 4 flights left on time and still arrived late.
The worst days
Worst days for JetBlue on FLL to DTW
The latest arrival of the period was on 4 August 2026, 4 hours 3 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Four of the five worst days fell in August 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 4 August 2026 | 4 hours 3 minutes | Carrier |
| 6 August 2026 | 3 hours 40 minutes | Late-arriving aircraft |
| 21 July 2026 | 3 hours 15 minutes | Carrier |
| 1 August 2026 | 2 hours 43 minutes | Carrier |
| 20 August 2026 | 1 hour 46 minutes | Late-arriving aircraft |
Delay causes
Why JetBlue runs late on this route
Carrier accounts for 52% of the 2,284 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Carrier
- 29%Late-arriving aircraft
- 12%National Airspace System
- 7%Extreme weather
The largest share of delay minutes, 52%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,190 of the 2,284 delay minutes reported here. The split is drawn from 2,284 reported delay minutes.
Cancellations run at 3.70%, against 1.89% nationally. That is roughly one flight in 25 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 stage length
What a delay here costs
13.5% 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 1,127 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.
The return leg is a different operation and performs like one: it runs 77.2% on time across 107 flights, 8 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 8 points of difference.
One caution: this is a thin sample. 108 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 DTW
Put together: the delay figures matter less here than the 3.70% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 11am–2pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 104 completed flights over 12 months sit behind that.
Related
Where to go next
- FLL to DTW, every carrier
- JetBlue on DTW to FLL, the return leg
- Delta Air Lines on FLL to DTW78.6%
- Spirit Airlines on FLL to DTW58.3%
- Frontier Airlines on FLL to DTW55.6%
- JetBlue Airways network-wide record
- Fort Lauderdale-Hollywood International (FLL) delay statistics
- Detroit Metropolitan Wayne County (DTW) delay statistics
- The US routes with the most cancellations
- Same route, different airline: where the carrier you pick matters most
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.