Flight Reliability
B6 311 · JetBlue Airways
Boston → Chicago (BOS–ORD)
87
Pretty Reliable
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 1.4%
- Cancelled
- 8 min early
- Median arrival delay
Based on 286 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
B6 311 arrived on time 95% of the time on Wednesdays and just 80% on Sundays. That gap is worth planning around.
Better than the BOS–ORD route average.
B6 311 arrived on time 86% of the time, versus 73% across the BOS–ORD route.
Better than the JetBlue Airways network average.
B6 311 arrived on time 86% of the time, versus 73% across the JetBlue Airways network.
Trending in the right direction.
B6 311 arrived on time 86% of the time over the last three months in the data, compared with 73% in the three months before that.
The breakdown
- Mon90%(41 flights)
- Tue87%(37 flights)
- Wed95%(37 flights)
- Thu86%(43 flights)
- Fri83%(42 flights)
- Sat81%(37 flights)
- Sun80%(44 flights)
- 6–9 AM86%(273 flights)
- 9 AM–12 PM—(8 flights)
91%
May
Jun 97% → May 91% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 97% | 30 |
| July 2025 | 97% | 30 |
| August 2025 | 87% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 77% | 26 |
| December 2025 | 75% | 16 |
| February 2026 | 67% | 15 |
| March 2026 | 76% | 29 |
| April 2026 | 91% | 22 |
| May 2026 | 91% | 21 |
- Departures on time
- 89%
- Diverted
- 0.3%
- Flights flown
- 281
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 286 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.