Route
SEA → EWR
Seattle–Tacoma International Airport Newark Liberty International Airport
How punctual is this route?
- On-time arrivals
- 83.4%
- Less than 15 minutes late
- Cancelled
- 2.1%
- Of scheduled flights
- Average delay when late
- 71 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,264
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 45%
- Airline (crew, maintenance, cleaning) 27%
- Late-arriving aircraft 22%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 87.2% | 227 |
| October 2025 | 81.3% | 206 |
| November 2025 | 83.6% | 171 |
| December 2025 | 80.3% | 179 |
| January 2026 | 85.0% | 118 |
| February 2026 | 87.4% | 103 |
| March 2026 | 84.1% | 166 |
| April 2026 | 89.5% | 181 |
| May 2026 | 88.2% | 213 |
| June 2026 | 83.3% | 225 |
| July 2026 | 75.1% | 246 |
| August 2026 | 79.3% | 229 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Alaska Airlines | 1,274 | 82.7% | 2.3% | 58 min |
| United Airlines | 990 | 84.2% | 1.9% | 90 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
AS477
24% late · 330 flights
-
AS298
10% late · 241 flights
-
AS314
11% late · 209 flights
-
UA341
17% late · 191 flights
-
AS295
19% late · 159 flights
-
UA1900
8% late · 124 flights
-
UA1274
15% late · 102 flights
-
AS274
13% late · 84 flights
-
AS239
9% late · 70 flights
-
AS263
43% late · 69 flights
-
UA1708
32% late · 68 flights
-
UA2100
19% late · 61 flights
-
UA2402
0% late · 52 flights
-
UA2357
6% late · 37 flights
-
AS356
9% late · 35 flights
-
UA1206
16% late · 32 flights
-
UA2680
6% late · 32 flights
-
UA1197
10% late · 31 flights
-
UA2467
27% late · 30 flights
-
AS293
29% late · 28 flights
-
UA1856
40% late · 25 flights
-
UA2271
25% late · 24 flights
-
UA2089
17% late · 23 flights
-
UA2211
14% late · 23 flights
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