Route reliability record
BOS→MCO
Boston to Orlando
- Flights
- 4,605
- Period
- September 2025 to August 2026
- Distance
- 1,121 mi
- Carriers
- 6
This route 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 4,605 BOS to MCO flights, of which Delta Air Lines flew 1,257 at 75.5% on time.
Best time to fly BOS to MCO: a 5am–8am departure, ideally on a Wednesday. Flights in that window arrived on time 85.5% of the time and Wednesday flights 80.1%, against 69.5% for the route overall.
Delta Air Lines is the most reliable of the three carriers covered here at 75.5% on time across 1,257 flights.
Key figures
On time
69.5%
Arrivals under 15 minutes late, of 4,435 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
3.17%
National rate is 1.89%
Best carrier
Delta
75.5% on time across 1,257 flights
These figures cover 4,605 flights between September 2025 and August 2026. Beyond the headline rate, 12.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on BOS to MCO
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 75.5% of the time; Spirit Airlines manages 58.5%. Sample sizes sit next to every figure, because a two-point gap across 389 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlinesthin sample | 284 | 80.7% | 109 min | 2.82% | B |
| Delta Air Lines | 1,257 | 75.5% | 79 min | 2.23% | B |
| Frontier Airlinesthin sample | 151 | 74.0% | 73 min | 0.00% | C+ |
| JetBlue Airways | 2,520 | 66.6% | 74 min | 3.61% | C− |
| Spirit Airlines | 389 | 58.5% | 82 min | 4.88% | D− |
| Southwest Airlinesthin sample | 4 | 50.0% | 19 min | 0.00% | F+ |
Spirit Airlines cancels 4.9% 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
Flights on BOS to MCO
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Best ways to make this trip
The most reliable ways to fly Boston to Orlando
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 3 of the top 5 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. MHT → MCOManchester to Orlando | Southwest Airlines | 77.8% | 78.1% | 0.41% | 5am–8am, Thu | — |
| 2. PVD → MCOProvidence to Orlando | Southwest Airlines | 75.4% | 76.4% | 1.34% | 5am–8am, Wed | — |
| 3. BOS → MCOBoston to Orlando | Delta Air Lines | 73.8% | 75.5% | 2.23% | 5am–8am, Wed | DL 1580 07:05 |
| 4. PVD → MCOProvidence to Orlando | JetBlue Airways | 72.7% | 75.0% | 3.05% | 8am–11am, Wed | — |
| 5. BOS → MCOBoston to Orlando | JetBlue Airways | 64.2% | 66.6% | 3.61% | 5am–8am, Wed | B6 2251 07:00 |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 31 points, against 17 points between the best and worst carrier.
- 5am–8am747 flights85.5%
- 8am–11am923 flights76.3%
- 11am–2pm946 flights71.0%
- 2pm–5pm946 flights59.9%
- 5pm–8pm627 flights62.4%
- 8pm–5am416 flights54.6%
Scale runs 45% to 90%.
The 8pm–5am window is where this operation falls apart: 54.6% on time, against 85.5% 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 11am–2pm window is the busiest, with 946 flights scheduled in it.
Explore
Filter BOS to MCO by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On BOS to MCO, the best departure window is 5am–8am at 85.5% on time and the worst is 8pm–5am at 54.6%, a wide gap of 30.9 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am85.5%
- 8–11am76.3%
- 11am–2pm71.0%
- 2–5pm59.9%
- 5–8pm62.4%
- 8pm–5am54.6%
best all US flightsScale 45% to 95%.
Across the year
When delays peak on this route
This route's year swings by 17 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
December is the weak month at 60.7% on time, against 77.6% in May. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. April was the busiest month here, with 520 flights.
Across the week, Wednesday is the strongest day at 80.1% on time and Sunday the weakest at 57.3%, a spread of 23 points.
Delay causes
Why this route gets delayed
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 104,000 reported delay minutes.
- 42%Late-arriving aircraft
- 29%Carrier
- 27%National Airspace System
- 2%Extreme weather
- 0%Security
42% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 104,000 reported delay minutes here, that single category outweighs weather by 19 to one. The split is drawn from 104,287 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 85.5% on time here.
Cancellations run at 3.17%, against 1.89% nationally. That is about one flight in 30 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 actually costs
12.8% 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 71.1% on time across 4,614 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.
The sample behind these figures is 4,605 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.
Work out the risk of missing a connection in MCO after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 3.17% 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. 4,435 completed flights over 12 months sit behind that.
Common questions
BOS to MCO questions
How often is BOS to MCO delayed?
Roughly one flight in three arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 30.5% of the 4,605 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on BOS to MCO?
Delta Air Lines leads at 75.5% on time across 1,257 flights. Spirit Airlines is at the other end on 58.5%, a gap of 17 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on BOS to MCO?
The 5am–8am departure window is the strongest at 85.5% on time. The 8pm–5am window is the weakest at 54.6%, 31 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are December delays on BOS to MCO?
December is the weakest month at 60.7% on time, compared with 77.6% in May. Across the year that is 17 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- MCO to BOS — the return legseparate record
- Boston Logan International (BOS) delay statistics
- Orlando International (MCO) delay statistics
- American Airlines on BOS to MCO80.7%
- Delta Air Lines on BOS to MCO75.5%
- Frontier Airlines on BOS to MCO74.0%
- JetBlue Airways on BOS to MCO66.6%
- Spirit Airlines on BOS to MCO58.5%
- BOS to DCA, a related route72.6%
- ATL to MCO, a related route70.3%
- BOS to ORD, a related route71.9%
- American Airlines on-time record80.7%
- Delta Air Lines on-time record75.5%
- Frontier Airlines on-time record74.0%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. BOS to MCO and MCO to BOS are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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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.