Flight Reliability
B6 263 · JetBlue Airways
New York → Seattle (JFK–SEA)
70
Usually Fine
WanderNerd Reliability Score
- 70%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 1.2%
- Cancelled
- 4 min early
- Median arrival delay
Based on 166 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
B6 263 departing between 6–9 PM arrived on time 87% of the time, versus 61% between 3–6 PM.
Thursdays have been rough.
B6 263 arrived on time 83% of the time on Mondays and just 57% on Thursdays. That gap is worth planning around.
A bit behind the JetBlue Airways network.
B6 263 arrived on time 70% of the time, versus 73% across the JetBlue Airways network.
Trending in the right direction.
B6 263 arrived on time 87% of the time over the last three months in the data, compared with 57% in the three months before that.
The breakdown
- Mon83%(23 flights)
- Tue70%(23 flights)
- Wed78%(23 flights)
- Thu57%(23 flights)
- Fri71%(24 flights)
- Sat71%(24 flights)
- Sun58%(24 flights)
- 3–6 PM61%(110 flights)
- 6–9 PM87%(54 flights)
89%
May
Jun 63% → May 89% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 30 |
| July 2025 | 39% | 31 |
| August 2025 | 68% | 31 |
| September 2025 | 83% | 29 |
| October 2025 | 88% | 25 |
| May 2026 | 89% | 18 |
- Departures on time
- 73%
- Diverted
- 0%
- Flights flown
- 164
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 166 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.