Route Reliability
New York → Seattle
JFK–SEA · 2,422 miles · John F. Kennedy International Airport to Seattle–Tacoma International Airport
- 69%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 2.6%
- Cancelled
- 2,906
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Delta Air Lines73%1,338 flights
- 2.JetBlue Airways70%166 flights
- 3.Alaska Airlines64%1,402 flights
What the data says
Morning-you made the right choice.
JFK–SEA flights departing between 9 AM–12 PM arrived on time 81% of the time, versus 58% between 6–9 PM.
Tuesday has been the better bet.
A small edge: 71% on time on Tuesdays against 66% on Thursdays.
Delta Air Lines runs this route best.
Delta Air Lines arrived on time 73% of the time on this route; Alaska Airlines managed 64%.
Trending in the right direction.
JFK–SEA flights arrived on time 71% of the time over the last three months in the data, compared with 61% in the three months before that.
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
- Mon69%(402 flights)
- Tue71%(400 flights)
- Wed71%(406 flights)
- Thu66%(402 flights)
- Fri66%(407 flights)
- Sat71%(394 flights)
- Sun67%(406 flights)
- 6–9 AM72%(699 flights)
- 9 AM–12 PM81%(508 flights)
- 12–3 PM63%(83 flights)
- 3–6 PM68%(816 flights)
- 6–9 PM58%(711 flights)
Jun 57% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 57% | 266 |
| July 2025 | 65% | 268 |
| August 2025 | 75% | 276 |
| September 2025 | 85% | 267 |
| October 2025 | 77% | 266 |
| November 2025 | 66% | 226 |
| December 2025 | 40% | 217 |
| January 2026 | 68% | 178 |
| February 2026 | 75% | 164 |
| March 2026 | 51% | 208 |
| April 2026 | 81% | 224 |
| May 2026 | 81% | 257 |
Same trip, other airports
Keep nerding
Based on 2,906 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.