Route · EWR → SEA · 2020–2025 BTS data
Newark to Seattle
The EWR–SEA corridor (Newark, NJ → Seattle, WA) runs behind the national average, served by 4 carriers across roughly 2,402 miles.
Data updated 2026-06-13
- 76.4%
- On-time
- -2.6 pts
- vs US avg
- 74 min
- Delay when late
- 10,549
- Flights
Cancelled
2.0%
Best Month
Feb 2024 92%
Worst Month
Dec 2025 47%
Distance
2,402 mi
Carriers
4
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 178 | 95 | 3 | 1 | AS,UA |
| Nov 2025 | 171 | 60 | 8 | 0 | UA,AS |
| Oct 2025 | 206 | 55 | 4 | 1 | AS,UA |
| Sep 2025 | 227 | 30 | 2 | 0 | UA,AS |
| Aug 2025 | 229 | 52 | 2 | 0 | UA,AS |
| Jul 2025 | 217 | 65 | 8 | 1 | AS,UA |
| Jun 2025 | 170 | 52 | 2 | 0 | AS,UA |
| May 2025 | 134 | 55 | 2 | 0 | AS,UA |
| Apr 2025 | 127 | 44 | 1 | 0 | UA,AS |
| Mar 2025 | 128 | 20 | 0 | 0 | AS,UA |
| Feb 2025 | 102 | 29 | 1 | 1 | AS,UA |
| Jan 2025 | 117 | 24 | 2 | 0 | AS,UA |
| Dec 2024 | 143 | 21 | 2 | 0 | AS,UA |
| Nov 2024 | 142 | 29 | 0 | 0 | UA,AS |
| Oct 2024 | 177 | 34 | 1 | 2 | UA,AS |
| Sep 2024 | 205 | 31 | 0 | 0 | UA,AS |
| Aug 2024 | 215 | 63 | 11 | 2 | AS,UA |
| Jul 2024 | 216 | 84 | 5 | 1 | AS,UA |
| Jun 2024 | 210 | 84 | 4 | 0 | AS,UA |
| May 2024 | 194 | 44 | 0 | 0 | AS,UA |
| Apr 2024 | 144 | 23 | 1 | 0 | AS,UA |
| Mar 2024 | 133 | 20 | 1 | 0 | AS,UA |
| Feb 2024 | 116 | 9 | 1 | 1 | AS,UA |
| Jan 2024 | 130 | 18 | 18 | 0 | AS,UA |
Cancellation Rate
2.0%
79 of 4,031 flights
Diversion Rate
0.2%
10 of 4,031 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
EWR - Newark
Full on-time, delay-cause, and seasonal performance for Newark, NJ.
Origin airport →SEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
Destination airport →Compare the two airports
See EWR 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 EWR–SEA.
Routes with a similar on-time rate
What the Data Says About EWR to SEA
The Newark to Seattle corridor (EWR to SEA) posts a 76.4% on-time rate on the lower edge of the average band, based on 10,549 tracked flights. Late flights run 73.7 minutes behind on average. 4 carriers cover the 2,402-mile route; over the last 24 months, 79 of 4,031 flights were cancelled (2.0%) and 0.2% diverted.
The monthly split is wide on this route: Feb 2024 posted the strongest performance at 92% on-time, while Dec 2025 came in at just 47% - a 46-point swing worth factoring into travel timing.
Frequently Asked Questions
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Flight Guides
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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.