Route · LWS → SEA · 2020–2025 BTS data
Lewiston to Seattle
The LWS–SEA corridor (Lewiston, ID → Seattle, WA) runs ahead of the national average, served by 1 carrier across roughly 261 miles.
Data updated 2026-06-13
- 88.1%
- On-time
- +9.1 pts
- vs US avg
- 85 min
- Delay when late
- 734
- Flights
Cancelled
0.5%
Best Month
N/A
Worst Month
N/A
Distance
261 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 31 | 5 | 0 | 1 | OO |
| Nov 2025 | 30 | 5 | 0 | 0 | OO |
| Oct 2025 | 31 | 3 | 0 | 0 | OO |
| Sep 2025 | 30 | 2 | 0 | 0 | OO |
| Aug 2025 | 30 | 1 | 0 | 0 | OO |
| Jul 2025 | 31 | 0 | 0 | 0 | OO |
| Jun 2025 | 30 | 5 | 0 | 0 | OO |
| May 2025 | 31 | 2 | 0 | 0 | OO |
| Apr 2025 | 30 | 1 | 0 | 0 | OO |
| Mar 2025 | 31 | 2 | 0 | 1 | OO |
| Jan 2025 | 31 | 2 | 0 | 0 | OO |
| Dec 2024 | 31 | 5 | 0 | 0 | OO |
| Nov 2024 | 30 | 5 | 0 | 0 | OO |
| Oct 2024 | 31 | 2 | 0 | 0 | OO |
| Sep 2024 | 30 | 4 | 0 | 0 | OO |
| Aug 2024 | 31 | 3 | 0 | 0 | OO |
| Jul 2024 | 31 | 3 | 0 | 0 | OO |
| Jun 2024 | 30 | 0 | 0 | 0 | OO |
| May 2024 | 31 | 4 | 0 | 0 | OO |
| Apr 2024 | 30 | 3 | 0 | 0 | OO |
| Mar 2024 | 31 | 7 | 0 | 0 | OO |
| Jan 2024 | 31 | 9 | 2 | 0 | OO |
| Dec 2023 | 31 | 7 | 2 | 1 | OO |
| Nov 2023 | 30 | 7 | 0 | 0 | OO |
Cancellation Rate
0.5%
4 of 734 flights
Diversion Rate
0.4%
3 of 734 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
LWS - Lewiston
Full on-time, delay-cause, and seasonal performance for Lewiston, ID.
Origin airport →SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Destination airport →Compare the two airports
See LWS and SEA side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to LWS–SEA.
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What the Data Says About LWS to SEA
Lewiston to Seattle (LWS to SEA) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 88.1% on-time rate across 734 flights, with delays that do happen averaging 85.1 minutes. The corridor runs roughly 261 miles and is served by 1 carrier. Over the most recent 24 months, 4 of 734 flights were cancelled (0.5%) and 3 diverted (0.4%).
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
Frequently Asked Questions
How often are flights delayed from LWS to SEA? ▼
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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.
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.