Route on-time record
MCO to SEA: most on-time flights and the best time to fly
Orlando (Orlando International Airport) to Seattle (Seattle–Tacoma International Airport). 1,822 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was Delta 347 at 8:55 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
MCO → SEA
Orlando to Seattle: 1,822 nonstop flights a year
On time (12 months)
77%
Cancelled
1.1%
avg delay 16 min
Best time to leave
9 AM to noon
87% on time vs 66% 6 to 9 PM
Most reliable airline
Alaska
77% chance on time
Lowest nonstop fare seen in the next two months: $169 (Alaska 1318 on 2026-10-21). 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 · Delta 347
8:55 AM → 12:29 PM6h 22m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.5%
- Avg arrival delay
- 9 min
- Arrived on time 86% of the time (361 flights, Jun 2025 to May 2026).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
Strong track record · 361 flights
Find Delta 347 fares Opens this date on Aviasales#2 · Alaska 395
7:00 AM → 10:30 AM6h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.8%
- Avg arrival delay
- 9 min
- Arrived on time 79% of the time (359 flights, Jun 2025 to May 2026).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
Strong track record · 359 flights
Find Alaska 395 fares Opens this date on Aviasales#3 · Alaska 309
9:03 AM → 12:28 PM6h 25m nonstop
Local times, typical schedule. Last flown 2026-05-12.
76%
chance on time
- On time (history)
- 68%
- Cancelled
- 0.0%
- Avg arrival delay
- 23 min
- Arrived on time 68% of the time (41 flights, Jun 2025 to May 2026).
- Never cancelled in 41 scheduled flights.
- Leaves in this route's most on-time window (9 AM to noon: 87% on time; 6 to 9 PM: 66%).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
Limited track record · 41 flights
Find Alaska 309 fares Opens this date on Aviasales#4 · Alaska 427
7:11 PM → 10:28 PM6h 17m nonstop
Local times, typical schedule. Last flown 2026-05-31.
75%
chance on time
- On time (history)
- 76%
- Cancelled
- 5.6%
- Avg arrival delay
- 9 min
- Arrived on time 76% of the time (17 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 66% on time; 9 AM to noon: 87%).
- Departs outside MCO's trouble window (1 PM to 7 PM, when 76% of its 89 ground stops and delay programs started).
Limited track record · 17 flights
Find Alaska 427 fares Opens this date on Aviasales#5 · Alaska 529
4:52 PM → 8:15 PM6h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
73%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 79% of the time (19 flights, Jun 2025 to May 2026).
- Departs inside MCO's trouble window: 76% of its 89 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Limited track record · 19 flights
Find Alaska 529 fares Opens this date on Aviasales#6 · Alaska 1525
6:07 PM → 9:30 PM6h 23m nonstop
Local times, typical schedule. Last flown 2026-05-12.
69%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 76% of the time (21 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 66% on time; 9 AM to noon: 87%).
- Departs inside MCO's trouble window: 76% of its 89 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Limited track record · 21 flights
Find Alaska 1525 fares Opens this date on Aviasales#7 · Delta 328
6:29 PM → 10:05 PM6h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31.
65%
chance on time
- On time (history)
- 67%
- Cancelled
- 2.5%
- Avg arrival delay
- 28 min
- Arrived on time 67% of the time (308 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 66% on time; 9 AM to noon: 87%).
- Departs inside MCO's trouble window: 76% of its 89 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 308 flights
Find Delta 328 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Alaska Airlines77%
1,103 flights · 77% on time as flown · 0.8% cancel
- Delta Air Lines75%
719 flights · 76% on time as flown · 1.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM79%
461 flights · avg delay 11 min
- 9 AM to noon87%
565 flights · avg delay 8 min
- 3 to 6 PM72%
265 flights · avg delay 24 min
- 6 to 9 PM66%
531 flights · avg delay 25 min
Best day: Tuesday (82%). Worst: Sunday (75%).
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.
What delays this route
- Late-arriving aircraft35%
- Airline (crew, maintenance, boarding)34%
- Air traffic control and airport volume23%
- Severe weather8%
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
MCO to SEA questions
- What time of day is best to fly MCO to SEA?
- 9 AM to noon: 87% of flights arrived on time, against 66% for departures 6 to 9 PM.
- Which airline is most on time from MCO to SEA?
- Alaska, with a season-adjusted 77% chance of operating and arriving on time over 1,103 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 MCO to SEA?
- July (65% on time); the best was October (88%), 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.
More routes from MCO
- SEA to MCO (return)
- MCO to ATL 75%
- MCO to EWR 73%
- MCO to ORD 70%
- MCO to PHL 72%
- MCO to LGA 68%
- MCO to JFK 73%
- MCO to DFW 74%
- MCO to CLT 78%
- MCO to BWI 75%
- MCO to BOS 70%
- MCO to DCA 68%
- MCO to DEN 79%
Most on-time flights from MCO on every route →
Live status: FAA delays and ground stops