Charlotte (CLT) to Seattle (SEA): On-Time Performance
Data through May 2026
The calendar drives reliability on CLT–SEA. September 2025 flights landed on schedule 87% of the time, but July 2024 dropped to 42% — a gap of 45 points. Across the full period the route averages 69% on-time against a national 78%. Morning departures also hold up better than evening ones (83% vs 60%), which matters most in the rough months.
- On-time
- 69%
- arrived <15 min late
- Avg delay
- 24 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 3.6
- last 12 months
- Duration
- 5h 48m
- scheduled
- Distance
- 2,279 mi
Monthly on-time trend
Best time to fly from CLT to SEA
Aim for departures around 9 a.m. (84% on-time); avoid 8 p.m. departures (42%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 72% | 23 min |
| Tuesdaybest | 74% | 17 min |
| Wednesday | 73% | 23 min |
| Thursday | 68% | 23 min |
| Friday | 66% | 24 min |
| Saturday | 67% | 27 min |
| Sunday | 63% | 27 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft41%
- Airline operations33%
- National airspace system14%
- Weather12%
Frequently asked questions
- How often are flights from CLT to SEA delayed?
- 31% of CLT–SEA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 24 minutes.
- What is the best time of day to fly from CLT to SEA?
- Departures around 9 a.m. have the best record (84% on-time), while departures around 8 p.m. have the worst (42%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from CLT to SEA?
- The scheduled CLT–SEA flight time averages 5h 48m over 2,279 miles. Actual arrival times vary — flights on this route land 15+ minutes late 31% of the time.
- How often are CLT to SEA flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from CLT to SEA?
- July 2024 was the roughest month in this dataset, with only 42% of arrivals on time. The best was September 2025 at 87%. If your dates are flexible, that 45-point gap is worth planning around.
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Based on 2,608 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.