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Route on-time record

SEA to MCO: most on-time flights and the best time to fly

Seattle (Seattle–Tacoma International Airport) to Orlando (Orlando International Airport). 1,820 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was Delta 448 at 11:20 PM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

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SEA → MCO

Seattle to Orlando: 1,820 nonstop flights a year

On time (12 months)

80%

Cancelled

0.9%

avg delay 11 min

Best time to leave

9 AM to noon

84% on time vs 77% before 9 AM

Most reliable airline

Alaska

80% chance on time

Check SEA to MCO fares

Lowest nonstop fare seen in the next two months: $290 (Alaska 428 on 2026-11-13). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · Delta 448

    11:20 PM → 7:40 AM5h 27m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    82%

    chance on time

    On time (history)
    83%
    Cancelled
    0.8%
    Avg arrival delay
    8 min
    • Arrived on time 83% of the time (351 flights, Jun 2025 to May 2026).
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).

    Strong track record · 351 flights

    Find Delta 448 fares Opens this date on Aviasales

  2. #2 · Alaska 441

    9:10 AM → 5:59 PM5h 49m nonstop

    Local times, typical schedule. Last flown 2026-05-12.

    82%

    chance on time

    On time (history)
    86%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 86% of the time (21 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 84% on time; Before 9 AM: 77%).
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
    • Lands inside MCO's trouble window: 76% of its 89 ground stops and delay programs started between 1 PM and 7 PM.

    Limited track record · 21 flights

    Find Alaska 441 fares Opens this date on Aviasales

  3. #3 · Alaska 420

    8:56 AM → 5:33 PM5h 37m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    79%

    chance on time

    On time (history)
    80%
    Cancelled
    0.6%
    Avg arrival delay
    10 min
    • Arrived on time 80% of the time (358 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (Before 9 AM: 77% on time; 9 AM to noon: 84%).
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
    • Lands inside MCO's trouble window: 76% of its 89 ground stops and delay programs started between 1 PM and 7 PM.

    Strong track record · 358 flights

    Find Alaska 420 fares Opens this date on Aviasales

  4. #4 · Alaska 394

    11:01 PM → 7:43 AM5h 42m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    79%

    chance on time

    On time (history)
    76%
    Cancelled
    0.5%
    Avg arrival delay
    10 min
    • Arrived on time 76% of the time (204 flights, Jun 2025 to May 2026).
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).

    Strong track record · 204 flights

    Find Alaska 394 fares Opens this date on Aviasales

  5. #5 · Delta 328

    8:50 AM → 5:19 PM5h 32m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    73%

    chance on time

    On time (history)
    74%
    Cancelled
    2.5%
    Avg arrival delay
    21 min
    • Arrived on time 74% of the time (353 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (Before 9 AM: 77% on time; 9 AM to noon: 84%).
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
    • Lands inside MCO's trouble window: 76% of its 89 ground stops and delay programs started between 1 PM and 7 PM.

    Strong track record · 353 flights

    Find Delta 328 fares Opens this date on Aviasales

  6. #6 · Alaska 295

    8:25 AM → 5:14 PM5h 49m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    71%

    chance on time

    On time (history)
    63%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 63% of the time (19 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (Before 9 AM: 77% on time; 9 AM to noon: 84%).
    • Departs outside SEA's trouble window (4 PM to 10 PM, when 54% of its 68 ground stops and delay programs started).
    • Lands inside MCO's trouble window: 76% of its 89 ground stops and delay programs started between 1 PM and 7 PM.

    Limited track record · 19 flights

    Find Alaska 295 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Alaska Airlines80%

    1,101 flights · 81% on time as flown · 0.4% cancel

  • Delta Air Lines77%

    719 flights · 78% on time as flown · 1.5% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM77%

    666 flights · avg delay 16 min

  • 9 AM to noon84%

    152 flights · avg delay 9 min

  • 3 to 6 PM81%

    294 flights · avg delay 10 min

  • After 9 PM81%

    708 flights · avg delay 8 min

Best day: Tuesday (87%). Worst: Sunday (77%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
83
F
85
M
77
A
81
M
81
J
73
J
72
A
76
S
83
O
84
N
89
D
82

What delays this route

  • Airline (crew, maintenance, boarding)44%
  • Air traffic control and airport volume31%
  • Late-arriving aircraft19%
  • Severe weather6%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from SEA to MCO…

SEA to MCO questions

What time of day is best to fly SEA to MCO?
9 AM to noon: 84% of flights arrived on time, against 77% for departures before 9 AM.
Which airline is most on time from SEA to MCO?
Alaska, with a season-adjusted 80% chance of operating and arriving on time over 1,101 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on SEA to MCO?
July (72% on time); the best was November (89%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

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Live status: FAA delays and ground stops