Route Reliability
San Diego → Boston
SAN–BOS · 2,588 miles · San Diego International Airport to Boston Logan International Airport
- 78%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 1.5%
- Cancelled
- 1,787
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Delta Air Lines80%364 flights
- 2.JetBlue Airways80%915 flights
- 3.Alaska Airlines75%508 flights
What the data says
The 3–6 PM departure wins.
SAN–BOS flights departing between 3–6 PM arrived on time 84% of the time, versus 72% between 6–9 AM.
Sunday scaries are real for this one.
SAN–BOS flights arrived on time 86% of the time on Saturdays. On Sundays: 73%.
Delta Air Lines has a slight edge here.
Delta Air Lines arrived on time 80% of the time on this route; Alaska Airlines managed 75%.
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
- Mon82%(261 flights)
- Tue80%(251 flights)
- Wed79%(247 flights)
- Thu76%(258 flights)
- Fri75%(265 flights)
- Sat86%(203 flights)
- Sun73%(264 flights)
- 6–9 AM72%(235 flights)
- 9 AM–12 PM73%(366 flights)
- 12–3 PM74%(190 flights)
- 3–6 PM84%(94 flights)
- 6–9 PM80%(252 flights)
- 9 PM–12 AM84%(612 flights)
Jun 78% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 78% | 171 |
| July 2025 | 71% | 177 |
| August 2025 | 86% | 174 |
| September 2025 | 74% | 132 |
| October 2025 | 76% | 161 |
| November 2025 | 79% | 135 |
| December 2025 | 77% | 129 |
| January 2026 | 82% | 113 |
| February 2026 | 75% | 104 |
| March 2026 | 73% | 147 |
| April 2026 | 79% | 143 |
| May 2026 | 90% | 163 |
Keep nerding
Based on 1,787 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.