Route Reliability
Seattle → Newark
SEA–EWR · 2,402 miles · Seattle–Tacoma International Airport to Newark Liberty International Airport
- 81%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 1.7%
- Cancelled
- 2,180
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Alaska Airlines82%1,208 flights
- 2.United Airlines80%972 flights
What the data says
The 6–9 AM departure wins.
SEA–EWR flights departing between 6–9 AM arrived on time 91% of the time, versus 69% between 9 AM–12 PM.
Thursday is the weak spot.
SEA–EWR flights arrived on time 87% of the time on Tuesdays. On Thursdays: 77%.
Not much between Alaska Airlines and United Airlines.
On this route they all land within 80% to 82% on time. Pick on schedule and price.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon81%(312 flights)
- Tue87%(308 flights)
- Wed84%(305 flights)
- Thu77%(310 flights)
- Fri80%(309 flights)
- Sat79%(278 flights)
- Sun79%(312 flights)
- 12–3 AM—(2 flights)
- 6–9 AM91%(756 flights)
- 9 AM–12 PM69%(366 flights)
- 12–3 PM72%(325 flights)
- 3–6 PM71%(38 flights)
- 6–9 PM—(1 flights)
- 9 PM–12 AM82%(646 flights)
Jun 72% → May 89% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 72% | 169 |
| July 2025 | 61% | 206 |
| August 2025 | 72% | 227 |
| September 2025 | 89% | 227 |
| October 2025 | 83% | 203 |
| November 2025 | 84% | 159 |
| December 2025 | 82% | 178 |
| January 2026 | 88% | 113 |
| February 2026 | 87% | 95 |
| March 2026 | 85% | 164 |
| April 2026 | 90% | 181 |
| May 2026 | 89% | 212 |
Same trip, other airports
Keep nerding
Based on 2,180 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.