Carrier route record
B6MCO→BOS
JetBlue Airways · Orlando to Boston
- Flights
- 2,527
- Period
- September 2025 to August 2026
- Share of route
- 55%
- Carriers
- 6
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on MCO to BOS carries a cancellation problem, not just a delay problem: 3.7% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about two flights in three arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 2,527 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 1,257 at 77.0% on time.
The national on-time rate over the same period is 77.3%, so JetBlue on MCO to BOS runs 10 points behind the country as a whole. Across a thousand flights that is about 99 extra late arrivals.
Key figures
On time
67.4%
Arrivals under 15 minutes late, of 2,430 completed flights
Avg delay
80 min
Across delayed arrivals only, not all flights
Cancelled
3.72%
National rate is 1.89%
Whole route
71.1%
Every carrier on MCO to BOS, 4,614 flights
These figures cover 2,527 flights between September 2025 and August 2026. Beyond the headline rate, 14.9% 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 MCO to BOS
JetBlue flew 2,527 of the 4,614 flights on MCO to BOS, most of the route. Its 67.4% on time is 4 points worse than the route as a whole, which runs 71.1%. Ranked by on-time rate it is number five of six carriers on the route, where the range runs from Southwest at 100.0% to American at 66.8%. Three 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 77.0% of the time; Spirit Airlines manages 70.1%. Sample sizes sit next to every figure, because a two-point gap across 392 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Southwest Airlinesthin sample | 3 | 100.0% | — | 0.00% | A+ |
| Frontier Airlinesthin sample | 151 | 90.7% | 63 min | 0.00% | A+ |
| Delta Air Lines | 1,257 | 77.0% | 72 min | 2.23% | B |
| Spirit Airlines | 392 | 70.1% | 54 min | 4.59% | C− |
| JetBlue Airways (this page) | 2,527 | 67.4% | 80 min | 3.72% | C− |
| American Airlinesthin sample | 284 | 66.8% | 80 min | 3.17% | C− |
Spirit Airlines cancels 4.6% 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.
Flight by flight
JetBlue flight numbers on MCO to BOS
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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 7 points between the best and worst carrier.
- 5am–8am438 flights91.6%
- 8am–11am474 flights83.3%
- 11am–2pm466 flights61.2%
- 2pm–5pm410 flights53.4%
- 5pm–8pm540 flights53.4%
- 8pm–5am199 flights56.2%
Scale runs 45% to 95%.
The 5pm–8pm window is where this operation falls apart: 53.4% on time, against 91.6% 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 5pm–8pm window is the busiest, with 540 flights scheduled in it.
Across the year
JetBlue on MCO to BOS through the year
May is the best month on the calendar at 81.6% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. April was the busiest month here, with 275 flights.
Across the week, Wednesday is the strongest day at 71.4% on time and Sunday the weakest at 62.3%, a spread of 9 points.
Arrival by arrival
How late JetBlue on MCO to BOS runs when it is late
The 791 late arrivals split 193 under half an hour, 235 between 30 and 60 minutes, and 363 an hour or more.
- 15+ min early591 flights24.3%
- Within 15 min1,048 flights43.1%
- 15–29 min late193 flights7.9%
- 30–59 min late235 flights9.7%
- 1–2 hours late221 flights9.1%
- 2+ hours late142 flights5.8%
Scale runs 0% to 100%.
Share of 2,430 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 744 departures that left 15 minutes late or more, only 73 made it up before arrival. 120 flights left on time and still arrived late.
The worst days
Worst days for JetBlue on MCO to BOS
The latest arrival of the period was on 18 July 2026, 29 hours 42 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across July, February, March and January, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 July 2026 | 29 hours 42 minutes | Carrier |
| 7 February 2026 | 20 hours 51 minutes | Carrier |
| 14 March 2026 | 11 hours 5 minutes | Late-arriving aircraft |
| 27 January 2026 | 8 hours 22 minutes | Extreme weather |
| 19 February 2026 | 8 hours 3 minutes | Late-arriving aircraft |
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 64,000 reported delay minutes.
- 41%Late-arriving aircraft
- 34%National Airspace System
- 20%Carrier
- 4%Extreme weather
- 0%Security
41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 64,000 reported delay minutes here, that single category outweighs weather by 9 to one. The split is drawn from 63,595 reported delay minutes.
34% 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 22,000 minutes out of 64,000, against a national NAS share of 21%.
Cancellations run at 3.72%, against 1.89% nationally. That is about 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
14.9% 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 1,121 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 runs 66.6% on time across 2,520 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 2,527 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking JetBlue on MCO to BOS
Put together: the delay figures matter less here than the 3.72% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 2,430 completed flights over 12 months sit behind that.
Related
Where to go next
- MCO to BOS, every carrier
- JetBlue on BOS to MCO, the return leg
- Frontier Airlines on MCO to BOS90.7%
- Delta Air Lines on MCO to BOS77.0%
- Spirit Airlines on MCO to BOS70.1%
- American Airlines on MCO to BOS66.8%
- JetBlue Airways network-wide record
- Orlando International (MCO) delay statistics
- Boston Logan International (BOS) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.