Route · CLT → SEA · 2020–2025 BTS data
Charlotte to Seattle
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), CLT to SEA (Charlotte to Seattle) ranks #1988 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 73.2%
- On-time
- -5.8 pts
- vs US avg
- 72 min
- Delay when late
- 6,336
- Flights
- #1988 of 4927
- Corpus placement
Cancelled
0.8%
Best Month
Sep 2025 87%
Worst Month
Jul 2024 44%
Distance
2,279 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 88 | 43 | 0 | 0 | AA |
| Nov 2025 | 84 | 18 | 0 | 0 | AA |
| Oct 2025 | 109 | 30 | 0 | 0 | AA |
| Sep 2025 | 120 | 16 | 0 | 0 | AA |
| Aug 2025 | 126 | 34 | 0 | 0 | AA |
| Jul 2025 | 154 | 65 | 1 | 1 | AA |
| Jun 2025 | 144 | 61 | 3 | 0 | AA |
| May 2025 | 111 | 22 | 0 | 0 | AA |
| Apr 2025 | 90 | 17 | 0 | 0 | AA |
| Mar 2025 | 90 | 25 | 1 | 0 | AA |
| Feb 2025 | 75 | 16 | 0 | 0 | AA |
| Jan 2025 | 86 | 15 | 1 | 0 | AA |
| Dec 2024 | 88 | 14 | 0 | 2 | AA |
| Nov 2024 | 78 | 11 | 0 | 1 | AA |
| Oct 2024 | 118 | 22 | 0 | 0 | AA |
| Sep 2024 | 126 | 29 | 3 | 0 | AA |
| Aug 2024 | 151 | 65 | 2 | 0 | AA |
| Jul 2024 | 151 | 85 | 5 | 0 | AA |
| Jun 2024 | 146 | 69 | 4 | 1 | AA |
| May 2024 | 119 | 66 | 2 | 1 | AA |
| Apr 2024 | 86 | 25 | 0 | 0 | AA |
| Mar 2024 | 93 | 21 | 0 | 0 | AA |
| Feb 2024 | 79 | 13 | 0 | 0 | AA |
| Jan 2024 | 86 | 17 | 0 | 0 | AA |
CLT–SEA seasonal on-time pattern
Best: January (85.1%) · weakest: July (57.0%)
Strongest calendar month
January
85.1% on-time · ~75 flights/mo
Busiest calendar month
July
~114 flights/mo avg
Weakest calendar month
July
57.0% on-time · ~114 flights/mo
Cancellation Rate
0.8%
22 of 2,598 flights
Diversion Rate
0.2%
6 of 2,598 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
CLT - Charlotte
Full on-time, delay-cause, and seasonal performance for Charlotte, NC.
CLT on-time profileSEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
SEA on-time profileCompare the two airports
See CLT and SEA side by side on delays, cancellations, and reliability.
Compare CLT vs SEAOrigin-hub reliability standing
Softer reliability from CLT
Among 129 routes leaving CLT, only 8 (including this one) clear below 75% on-time, while 5 stay ≥85% and 116 sit mid-band. Travelers comparing CLT options should weigh this 73.2% print against those peers · fleet on-time rank #4664 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to CLT–SEA.
Routes with a similar on-time rate
What the Data Says About CLT to SEA
On-time performance on the CLT to SEA pairing (Charlotte to Seattle) trails a chunk of the network: 73.2% of 6,336 tracked flights arrived on schedule, with a 71.8-minute average delay on the ones that ran late. The route spans about 2,279 miles across 1 carrier. Cancellations over the trailing 24 months hit 0.8% (22 of 2,598 flights), with 0.2% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 87% on-time, while Jul 2024 came in at just 44% - a 43-point swing worth factoring into travel timing.
On the multi-year calendar, CLT–SEA peaks in January at 85.1% on-time while July carries the heaviest traffic (~114 flights per month) ; the softest month is July at 57.0%, a 28.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does CLT to SEA rank among US routes by traffic? ▼
How often are flights delayed from CLT to SEA? ▼
What is the cancellation rate for CLT to SEA? ▼
How far is the flight from CLT to SEA? ▼
When is the best time to fly from CLT to SEA? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using CLT–SEA data
CLT–SEA sits 5.8 pts below the national 79% average; check the seasonal chart and airport profiles before treating the headline as typical.
- Compare CLT and SEA airport profiles: delay causes and top routes differ even on the same corridor. CLT airport
- If your dates flex, January (85.1% on-time) beats July (57.0%) on this corridor. Seasonal chart
- 4 other routes post a similar 73.2% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.