Carrier route record

ASSEA→MCO

Alaska Airlines · Seattle to Orlando

Flights: 1,101
Period: July 2025 to June 2026
Share of route: 60%
Carriers: 2

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Alaska Airlines.

Alaska on SEA to MCO lands a B+, 4 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 1,101 flights, with a median arrival 8 minutes early.

Set against the rest of the country, Alaska's SEA to MCO record is 4 points better than the US average of 77.6%. That gap is worth roughly 43 fewer late arrivals for every thousand flights.

On time

81.9%

Arrivals under 15 minutes late, of 1,089 completed flights

Avg delay

43 min

Across delayed arrivals only, not all flights

Cancelled

0.36%

National rate is 1.81%

Whole route

81.0%

Every carrier on SEA to MCO, 1,820 flights

These figures cover 1,101 flights between July 2025 and June 2026. The median arrival is 8 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 SEA to MCO

Alaska flew 1,101 of the 1,820 flights on SEA to MCO, most of the route. Its 81.9% on time is about level with the route as a whole at 81.0%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from Alaska at 81.9% to Delta at 79.6%.

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.

On-time performance by carrier on SEA to MCO
Airline	Flights	On time	Avg delay	Cancelled	Grade
Alaska Airlines (this page)	1,101	81.9%	43 min	0.36%	B+
Delta Air Lines	719	79.6%	59 min	1.53%	B

Flight by flight

Alaska flight numbers on SEA to MCO

AS 42008:0180.7% · 362 flights

Departure window

When Alaska 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 1,101 flights.

5am–8am21 flights—
8am–11am462 flights81.2%
11am–2pm—
2pm–5pm264 flights82.6%
5pm–8pm—
8pm–5am354 flights82.7%

Scale runs 75% to 90%. Rows with fewer than 30 flights show a dash.

The overnight block holds up unusually well at 82.7% on time across 354 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 8am–11am window is the busiest, with 462 flights scheduled in it.

Across the year

Alaska on SEA to MCO through the year

Darker means more delays. Figures are on-time percentages.February best, July worst

July is the worst month at 60.0% on time, 36 points below February, the best at 96.0%. 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 103 flights.

Across the week, Saturday is the strongest day at 84.2% on time and Friday the weakest at 75.2%. 9 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 8,531 reported delay minutes.

National Airspace System
36%
Carrier
36%
Late-arriving aircraft
20%
Extreme weather
7%

The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,072 of the 8,531 delay minutes reported here. The split is drawn from 8,531 reported delay minutes.

36% 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 3,096 minutes out of 8,531, against a national NAS share of 21%.

Cancellations are rare at 0.36%, 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

Badly late arrivals are rare here: only 3.3% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

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 77.4% on time across 1,103 flights, 5 points below 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 1,101 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 SEA to MCO

Put together: the calendar is the biggest lever here, not the carrier or the hour. February runs 96.0% on time and July 60.0%, a swing of 36 points. If the dates move at all, move them out of July before you think about anything else. 1,089 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