Airport · LWS · Lewiston, Idaho
Lewiston, ID
Lewiston, ID posts top-5% on-time performance among the 382 tracked U.S. airports, as a mid-size U.S. airport. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 10,808 flights (2020–2025); its biggest delay driver is carrier.
Data updated 2026-06-13
- 89.7%
- On-time
- Top 4%
- on-time, US airports
- 101 min
- Delay when late
- 0.36%
- Cancelled
Key Performance Metrics
Total Flights
10,808
Best Month
Mar 97%
Worst Month
Dec 93.4%
Delayed
1,112
Cancelled
39
LWS on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Where LWS sits among all 382 tracked airports
LWS's 89.7% on-time rate falls in the 85-90% band, the 116-airport band it shares.
National on-time-rate distribution
- 60-65% 1
1 airport between 60% and 65% on-time
1 airports
- 65-70% 4
4 airports between 65% and 70% on-time
4 airports
- 70-75% 9
9 airports between 70% and 75% on-time
9 airports
- 75-80% 48
48 airports between 75% and 80% on-time
48 airports
- 80-85%
192 airports between 80% and 85% on-time
192 airports
- 85-90%
116 airports between 85% and 90% on-time
116 airports
- 90-95% 12
12 airports between 90% and 95% on-time
12 airports
What this shows LWS is marked in the 85-90% band.
Delay Cause Breakdown
Top delay cause: Carrier. Total delay minutes: 65,488.
LWS - seasonal on-time pattern
Best: March (97%) · worst: December (93.4%)
Seasonal Performance Patterns
Monthly averages across all years of data. Best month: March (97% on-time). Most delays: December (93.4% on-time).
| Month | Avg Flights | Avg Delayed | Avg Cancelled | On-Time % |
|---|---|---|---|---|
| December | 159 | 21 | 1 | 93.4% |
| November | 154 | 15 | 0 | 94.7% |
| October | 151 | 14 | 1 | 94.8% |
| September | 148 | 15 | 0 | 94.8% |
| August | 163 | 17 | 0 | 95.3% |
| July | 156 | 18 | 0 | 94.3% |
| June | 144 | 16 | 1 | 94.2% |
| May | 139 | 11 | 0 | 96.8% |
| April | 136 | 10 | 1 | 96.9% |
| March | 154 | 13 | 1 | 97% |
| February | 137 | 15 | 1 | 94.5% |
| January | 161 | 21 | 2 | 93.6% |
Year-Over-Year Performance
Annual flight volume and on-time trends at LWS.
LWS - on-time rate by year
2020–2025, year-over-year trend.
| Year | Flights | Delayed | Cancelled | On-Time % |
|---|---|---|---|---|
| 2025 | 1,521 | 54 | 2 | 96.4% |
| 2024 | 2,195 | 120 | 6 | 94.5% |
| 2023 | 1,629 | 135 | 7 | 91.7% |
| 2022 | 2,050 | 111 | 9 | 94.6% |
| 2021 | 2,017 | 73 | 4 | 96.4% |
| 2020 | 1,396 | 48 | 11 | 96.6% |
Cancellation & Diversion Analysis
Flight disruption statistics for Lewiston, ID.
Cancellation Rate
0.36%
39 of 10,808 flights
Diversion Rate
0.25%
27 of 10,808 flights
Delay Rate
10.3%
1,112 of 10,808 flights
Monthly Performance
Recent 24 months of flight data.
| Period | Flights | Dep Delayed | Arr Delayed | Cancelled | Diverted |
|---|---|---|---|---|---|
| Dec 2025 | 124 | 9 | 5 | 0 | 1 |
| Nov 2025 | 120 | 5 | 2 | 0 | 0 |
| Oct 2025 | 124 | 3 | 2 | 0 | 0 |
| Sep 2025 | 120 | 1 | 1 | 0 | 0 |
| Aug 2025 | 122 | 5 | 7 | 0 | 0 |
| Jul 2025 | 124 | 4 | 5 | 0 | 0 |
| Jun 2025 | 120 | 4 | 5 | 0 | 0 |
| May 2025 | 124 | 7 | 6 | 0 | 0 |
| Apr 2025 | 120 | 2 | 5 | 0 | 0 |
| Mar 2025 | 124 | 2 | 5 | 0 | 1 |
| Feb 2025 | 113 | 5 | 5 | 2 | 0 |
| Jan 2025 | 186 | 7 | 13 | 0 | 0 |
| Dec 2024 | 186 | 9 | 7 | 1 | 0 |
| Nov 2024 | 180 | 6 | 8 | 0 | 0 |
| Oct 2024 | 186 | 10 | 4 | 0 | 0 |
| Sep 2024 | 180 | 9 | 11 | 0 | 0 |
| Aug 2024 | 186 | 9 | 16 | 0 | 0 |
| Jul 2024 | 186 | 10 | 12 | 0 | 0 |
| Jun 2024 | 180 | 9 | 16 | 0 | 0 |
| May 2024 | 186 | 8 | 13 | 0 | 0 |
| Apr 2024 | 180 | 7 | 8 | 0 | 0 |
| Mar 2024 | 185 | 6 | 10 | 1 | 0 |
| Feb 2024 | 174 | 12 | 12 | 1 | 0 |
| Jan 2024 | 186 | 25 | 23 | 3 | 0 |
Top Routes from LWS
Busiest routes to and from Lewiston, ID.
| Route | Flights | On-Time | Distance |
|---|---|---|---|
| LWS (Lewiston) → SLC (Salt Lake City) | 3,268 | 90.9% | 461 mi |
| SLC (Salt Lake City) → LWS (Lewiston) | 3,267 | 90.9% | 461 mi |
| DEN (Denver) → LWS (Lewiston) | 1,103 | 85.2% | 768 mi |
| LWS (Lewiston) → DEN (Denver) | 1,103 | 83.7% | 768 mi |
| LWS (Lewiston) → SEA (Seattle) | 734 | 88.1% | 261 mi |
| SEA (Seattle) → LWS (Lewiston) | 734 | 88.8% | 261 mi |
Airports With a Similar On-Time Rate
Other U.S. airports nationwide whose on-time rate is closest to Lewiston, ID's 89.7%.
Other Airports in Idaho
Compare performance with other Idaho airports.
Keep exploring
More flight data around Lewiston, ID.
Idaho flight data
Statewide on-time and delay aggregates, plus every reporting airport in Idaho.
View ID data →Airport rankings
See where LWS sits among U.S. airports on on-time rate and average delay.
Best on-time airports →Compare airports
Put LWS head-to-head with another airport on delays and reliability.
Open comparison tool →What the Data Says About LWS
Lewiston, ID in Lewiston, Idaho handled 10,808 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 89.7% on-time departure rate. Of those flights, 1,112 experienced delays, 39 were cancelled, and 27 were diverted. The cancellation rate works out to 0.36%, the diversion rate to 0.25%, and the average delay when departures run late is 101.2 minutes. These figures are the baseline for comparing LWS against other airports in the same state and nationally.
Breaking down what drives delays at LWS, Carrier leads the pack. Carrier accounts for 66.1% of total delay minutes, followed by Weather at 20.3% and Late Aircraft at 10.0%. Weather contributes 20.3% of delay minutes at this airport, while security holds the smallest share at 0.2%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.
Seasonally, March runs the cleanest at LWS with a 97% on-time rate, while December is the roughest at 93.4% - a 4-point swing between best and worst month. Volume peaks in August, when average flights hit 163. The busiest route connecting LWS is to SLC (Salt Lake City), with 3,268 flights at a 90.9% on-time rate. Combine these numbers - 89.7% on-time, 101.2-minute average delay, 0.36% cancellation rate, and you have a concrete picture of departure reliability at Lewiston, ID.
Frequently Asked Questions
What is the on-time performance rate at Lewiston, ID (LWS)? ▼
What is the most common cause of delays at LWS? ▼
What is the average delay time at LWS? ▼
What is the best month to fly from LWS? ▼
What is the worst month for delays at LWS? ▼
How many routes operate from LWS? ▼
What is the cancellation rate at LWS? ▼
Flight Guides
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Using LWS's data
An airport-level on-time rate is a starting point, not a guarantee for your specific flight.
- Check the busiest route from LWS before you book a connection. See top routes
- Travel in March rather than December if your dates are flexible. Seasonal patterns
- Scores vary by airline and route within the same airport; check the specific carrier you're flying. Browse airlines
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Related
Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.