Carrier route record
ASMCO→SEA
Alaska Airlines · Orlando to Seattle
- Flights
- 1,103
- Period
- July 2025 to June 2026
- Share of route
- 61%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Alaska Airlines.
Alaska on MCO to SEA lands a B+, level with the national rate of 77.6%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 1,103 flights, with a median arrival 5 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Alaska on MCO to SEA from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.4%
Arrivals under 15 minutes late, of 1,093 completed flights
Avg delay
57 min
Across delayed arrivals only, not all flights
Cancelled
0.73%
National rate is 1.81%
Whole route
76.5%
Every carrier on MCO to SEA, 1,822 flights
These figures cover 1,103 flights between July 2025 and June 2026. The median arrival is 5 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
Alaska against every carrier on MCO to SEA
Alaska flew 1,103 of the 1,822 flights on MCO to SEA, most of the route. Its 77.4% on time is about level with the route as a whole at 76.5%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Alaska at 77.4% to Delta at 75.2%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Alaska Airlines (this page) | 1,103 | 77.4% | 57 min | 0.73% | B+ |
| Delta Air Lines | 719 | 75.2% | 67 min | 1.53% | B |
Flight by flight
Alaska flight numbers on MCO to SEA
Departure window
When Alaska runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 16 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am363 flights80.2%
- 8am–11am268 flights86.1%
- 11am–2pm—
- 2pm–5pm146 flights70.3%
- 5pm–8pm292 flights70.0%
- 8pm–5am34 flights71.9%
Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 86.1% of the time, against 70.0% for the evening window. That is 16 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 363 flights scheduled in it.
Across the year
Alaska on MCO to SEA through the year
August is the worst month at 63.0% on time, 24 points below September, the best at 87.1%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. March was the busiest month here, with 104 flights.
Across the week, Thursday is the strongest day at 82.2% on time and Saturday the weakest at 73.8%. 8 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Alaska 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 14,000 reported delay minutes.
- 33%Carrier
- 29%Late-arriving aircraft
- 28%National Airspace System
- 10%Extreme weather
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 86.1% on time here. The split is drawn from 14,119 reported delay minutes.
No single cause dominates. carrier at 33%, late-arriving aircraft at 29% and national airspace system at 28% split the 14,000 reported delay minutes between them. An even spread like this usually means the operation is running close to its designed capacity with no one obvious weak point, and it is the hardest pattern for a traveller to route around.
Cancellations are rare at 0.73%, 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
6.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
At 2,554 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg is a different operation and performs like one: it runs 81.9% on time across 1,101 flights, 5 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 5 points of difference.
The sample behind these figures is 1,103 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 Alaska on MCO to SEA
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 87.1% on time and August 63.0%, a swing of 24 points. If the dates move at all, move them out of August before you think about anything else. 1,093 completed flights over 12 months sit behind that.
Related
Where to go next
- MCO to SEA, every carrier
- Alaska on SEA to MCO, the return leg
- Delta Air Lines on MCO to SEA75.2%
- Alaska Airlines network-wide record
- Orlando International (MCO) delay statistics
- Seattle-Tacoma International (SEA) delay statistics
- The best time of day to fly, according to 7.04 million flight records
- Worst months to fly in the US, ranked by the data
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.