Carrier route record
B6SAV→BOS
JetBlue Airways · Savannah to Boston
- Flights
- 616
- Period
- July 2025 to June 2026
- Share of route
- 57%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on SAV to BOS sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 616 flights, with a median arrival 5 minutes early.
The national on-time rate over the same period is 77.6%, so JetBlue on SAV to BOS runs 9 points behind the country as a whole. Across a thousand flights that is about 85 extra late arrivals.
Key figures
On time
69.1%
Arrivals under 15 minutes late, of 598 completed flights
Avg delay
86 min
Across delayed arrivals only, not all flights
Cancelled
2.92%
National rate is 1.81%
Whole route
68.4%
Every carrier on SAV to BOS, 1,076 flights
These figures cover 616 flights between July 2025 and June 2026. Beyond the headline rate, 13.9% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
JetBlue against every carrier on SAV to BOS
JetBlue flew 616 of the 1,076 flights on SAV to BOS, most of the route. Its 69.1% on time is about level with the route as a whole at 68.4%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Allegiant at 88.9% to Delta at 46.2%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Allegiant Airthin sample | 18 | 88.9% | 26 min | 0.00% | A+ |
| JetBlue Airways (this page) | 616 | 69.1% | 86 min | 2.92% | C |
| Republic Airways | 416 | 68.0% | 77 min | 2.88% | C |
| Delta Air Linesthin sample | 26 | 46.2% | 113 min | 0.00% | F+ |
Flight by flight
JetBlue flight numbers on SAV to BOS
Departure window
When JetBlue runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 49 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am26 flights—
- 8am–11am64 flights85.7%
- 11am–2pm265 flights69.5%
- 2pm–5pm68 flights36.4%
- 5pm–8pm105 flights68.0%
- 8pm–5am88 flights72.4%
Scale runs 30% to 90%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 85.7% of the time, against 36.4% for the afternoon window. That is 49 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 265 flights scheduled in it.
Across the year
JetBlue on SAV to BOS through the year
July is the worst month at 42.6% on time, 41 points below May, the best at 83.6%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. April was the busiest month here, with 67 flights.
Across the week, Saturday is the strongest day at 81.1% on time and Sunday the weakest at 60.2%. 21 points is a smaller lever than departure hour, but it is free.
Delay causes
Why JetBlue runs late on this route
One category carries most of the weight here. National Airspace System accounts for 44% of the 16,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 44%National Airspace System
- 39%Late-arriving aircraft
- 15%Carrier
- 2%Extreme weather
39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 16,000 reported delay minutes here, that single category outweighs weather by 17 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 15,877 reported delay minutes.
44% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 7,049 minutes out of 16,000, against a national NAS share of 21%.
Cancellations run at 2.92%, against 1.81% nationally. That is roughly one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.9% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The 901 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 78.6% on time across 616 flights, 10 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 10 points of difference.
One caution: this is a thin sample. 616 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking JetBlue on SAV to BOS
Put together: the delay figures matter less here than the 2.92% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 598 completed flights over 12 months sit behind that.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.