Charlotte to Seattle Flight Delays
Sample size: 3,739 CLT–SEA flights, January 2023 to December 2025 (BTS). 30.41% of Charlotte to Seattle flights arrived at least 15 minutes late. That is 6.2 points worse than the 24.2% median for those routes, so schedule padding matters here. Departure time moves the odds more than anything else on this route: 09:00 departures run 16.25% late against 53.03% for 20:00. Tuesday is the calmest day at 28.07%, Sunday the worst at 34.53%. Cancellations (2024 to 2025) peak in June at 2.41% of scheduled flights and bottom out in February at 0%. Last updated: 2026-10-01.
CLT airport delay guide · SEA airport delay guide · Predict a CLT to SEA flight
Best time to fly CLT to SEA
The best time to fly CLT to SEA is the 9 AM departure and fly on a Tuesday, not a Sunday (28.07% against 34.53%): 16.25% of 9 AM flights arrived 15+ minutes late, against 53.03% at 8 PM.
Lowest observed delay rates depart 08:00–09:00, 16:00. The highest sit at 18:00–20:00. Only departure hours with at least 100 recorded flights are listed, so sparse hours are blank rather than estimated.
CLT to SEA delay rate by scheduled departure hour, January 2023 to December 2025
| Departure hour | Delayed 15+ min | Flights observed |
|---|
| 08:00 | 23.76% | 101 |
| 09:00 | 16.25% | 874 |
| 15:00 | 33.47% | 487 |
| 16:00 | 31.32% | 779 |
| 18:00 | 35.09% | 607 |
| 19:00 | 38.25% | 217 |
| 20:00 | 53.03% | 396 |
CLT to SEA delays by day of week
Charlotte to Seattle delay rate by day of week, January 2023 to December 2025
| Day | Delayed 15+ min | Flights observed |
|---|
| Mon | 30.34% | 557 |
| Tue | 28.07% | 488 |
| Wed | 28.9% | 519 |
| Thu | 31.03% | 551 |
| Fri | 29.38% | 548 |
| Sat | 30.19% | 520 |
| Sun | 34.53% | 556 |
Month-by-month cancellation pattern
Share of scheduled CLT–SEA flights cancelled in each month, from BTS 2024–2025 on-time reporting. These are cancellations, not delays. Delay figures on this page cover January 2023 to December 2025.
Charlotte to Seattle monthly cancellation rate
| Month | Cancelled | Flights scheduled |
|---|
| Jan | 0.58% | 172 |
| Feb | 0% | 154 |
| Mar | 0.55% | 183 |
| Apr | 0% | 176 |
| May | 0.87% | 230 |
| Jun | 2.41% | 290 |
| Jul | 1.97% | 305 |
| Aug | 0.72% | 277 |
| Sep | 1.22% | 246 |
| Oct | 0% | 227 |
| Nov | 0% | 162 |
| Dec | 0% | 176 |
Airlines on CLT to SEA: delays and cancellations
American Airlines flies this route today. Only carriers with at least 200 scheduled flights on the pairing are listed. Delay rates cover January 2023 to December 2025; cancellation rates cover 2024 to 2025.
Carriers on Charlotte to Seattle
| Airline | Share of flights | Delayed 15+ min | Cancelled | Flights scheduled |
|---|
| American Airlines | 100% | 30.41% | 0.85% | 2,598 |
CLT vs SEA: airport conditions
Both ends of a route shape its delay profile. These are DelayGuard's operational scores for Charlotte and Seattle.
Airport comparison, CLT against SEA
| Measure | CLT (Charlotte) | SEA (Seattle) |
|---|
| Congestion | high | high |
| Weather risk | moderate | moderate |
| NAS vulnerability | moderate | moderate |
| Average taxi-out | 15 min | 14 min |
| Runways | 4 | 3 |
CLT to SEA questions
- How often do CLT to SEA flights get delayed?
- 30.41% of Charlotte to Seattle flights arrived 15 or more minutes late across 3,739 recorded departures, January 2023 to December 2025 (BTS).
- What is the best time of day to fly CLT to SEA?
- 09:00 departures have the lowest recorded delay rate on this route at 16.25%, across 874 flights. 20:00 is the highest at 53.03%.
- Which day of the week is best for CLT to SEA?
- Tuesday records the lowest delay rate at 28.07%, while Sunday is highest at 34.53%.
- Which month has the most CLT to SEA cancellations?
- June, when 2.41% of scheduled flights were cancelled (2024 to 2025). February is the lowest at 0%.
- How accurate is DelayGuard's delay prediction for this route?
- DelayGuard's delay risk score comes from an ML model trained on BTS data (3.95 million US domestic flights, 2023 to mid-2025), with live weather, FAA delay programs and historical route performance. Check the current CLT to SEA prediction on delayguard.ai.
Delay figures reflect arrivals 15 or more minutes late in BTS on-time reporting. Cancellation figures are separate and count flights that never operated. Hours, days and months with fewer than 100 recorded flights are omitted rather than estimated.