Newark (EWR) to Seattle (SEA) flights
Alaska Airlines, United Airlines fly nonstop from Newark Liberty International Airport to Seattle-Tacoma International Airport, with about 53 flights a week in July 2026. The 2,402-mile flight takes about 6h 8m gate to gate.
- Distance
- 2,402 mi · 3,866 km
- Flight time
- 6h 8m
- Airlines
- 2
- Seats filled
- 89%
Airlines flying EWR to SEA
| Airline | Flights a week | Aircraft | Passengers (12 months) | Flight time |
|---|---|---|---|---|
| Alaska Airlines | 27 | Boeing 737 MAX 9, Boeing 737-900ER, Boeing 737-800 | 195,774 | 6h 9m |
| United Airlines | 26 | Boeing 737 MAX 9, Boeing 737 MAX 8, Boeing 737-900ER | 146,214 | 6h 6m |
Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.
EWR to SEA flight schedule
12 flight numbers flew this route in August 2026, 4 of them almost daily. The first usually leaves at 7:25am and the last at 8:33pm. Times are local and can change; check with the airline before you book.
| Flight | Departs | Arrives | Days flown in August 2026 | On time (12 months) |
|---|---|---|---|---|
| AS 299Alaska Airlines | 7:25am | 10:35am | 31 | 75% |
| UA 1330United Airlines | 7:59am | 11:03am | 31 | 78% |
| AS 373Alaska Airlines | 9:00am | 12:07pm | 13 | 93% |
| AS 230Alaska Airlines | 9:30am | 12:43pm | 18 | 83% |
| UA 1289United Airlines | 11:05am | 2:16pm | 10 | 79% |
| UA 1309United Airlines | 11:25am | 2:28pm | 15 | 87% |
| UA 1814United Airlines | 3:40pm | 6:41pm | 21 | 76% |
| UA 2387United Airlines | 4:25pm | 7:36pm | 10 | 51% |
| AS 356Alaska Airlines | 4:31pm | 7:48pm | 18 | 69% |
| AS 462Alaska Airlines | 5:36pm | 8:58pm | 18 | 69% |
| AS 296Alaska Airlines | 5:50pm | 8:57pm | 13 | 47% |
| UA 1796United Airlines | 8:33pm | 11:44pm | 31 | 56% |
Is EWR to SEA on time?
From September 2025 to August 2026, 73% of 2,263 flights arrived within 15 minutes of schedule and 2.4% were cancelled. Flights leaving around 9am were the most punctual (84%), those around 7pm the least (57%). Most delay time was caused by air traffic control and airport congestion (37%).
| Airline | Flights | On time | Average delay | Cancelled |
|---|---|---|---|---|
| Alaska Airlines | 1,273 | 72% | 21 min | 2.8% |
| United Airlines | 990 | 75% | 19 min | 1.8% |
Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.
On-time arrivals by departure time
| Scheduled departure | Flights | On time, relative | On time |
|---|---|---|---|
| 7am to 8am | 532 | 77% | |
| 8am to 9am | 102 | 77% | |
| 9am to 10am | 180 | 84% | |
| 11am to 12pm | 77 | 80% | |
| 3pm to 4pm | 154 | 84% | |
| 4pm to 5pm | 278 | 72% | |
| 5pm to 6pm | 268 | 67% | |
| 6pm to 7pm | 149 | 72% | |
| 7pm to 8pm | 296 | 57% | |
| 8pm to 9pm | 175 | 64% |
Flights by month
| Month | Flights | Flights, relative | Passengers |
|---|---|---|---|
| August 2025 | 227 | 37,061 | |
| September 2025 | 226 | 32,871 | |
| October 2025 | 202 | 29,747 | |
| November 2025 | 163 | 24,499 | |
| December 2025 | 175 | 27,681 | |
| January 2026 | 114 | 17,697 | |
| February 2026 | 95 | 14,035 | |
| March 2026 | 164 | 24,729 | |
| April 2026 | 179 | 27,295 | |
| May 2026 | 213 | 33,783 | |
| June 2026 | 223 | 34,820 | |
| July 2026 | 235 | 37,770 |
Related
Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.