Carrier route record
B6BOS→SAV
JetBlue Airways · Boston to Savannah
- 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 BOS to SAV lands a B, about a point better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 616 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate JetBlue on BOS to SAV from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.6%
Arrivals under 15 minutes late, of 599 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
2.27%
National rate is 1.81%
Whole route
80.0%
Every carrier on BOS to SAV, 1,076 flights
These figures cover 616 flights between July 2025 and June 2026. The median arrival is 8 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
JetBlue against every carrier on BOS to SAV
JetBlue flew 616 of the 1,076 flights on BOS to SAV, most of the route. Its 78.6% on time is about level with the route as a whole at 80.0%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from Allegiant at 100.0% to JetBlue at 78.6%. 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 | 100.0% | — | 0.00% | A+ |
| Delta Air Linesthin sample | 26 | 88.5% | 41 min | 0.00% | A+ |
| Republic Airways | 416 | 80.5% | 44 min | 1.44% | B |
| JetBlue Airways (this page) | 616 | 78.6% | 65 min | 2.27% | B |
Flight by flight
JetBlue flight numbers on BOS to SAV
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 35 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–8am88 flights96.5%
- 8am–11am261 flights78.0%
- 11am–2pm57 flights78.6%
- 2pm–5pm152 flights74.0%
- 5pm–8pm40 flights61.5%
- 8pm–5am18 flights—
Scale runs 55% to 100%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 61.5% on time, against 96.5% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 261 flights scheduled in it.
Across the year
JetBlue on BOS to SAV through the year
December is the weak month at 54.8% on time, against 88.2% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. April was the busiest month here, with 68 flights.
Across the week, Wednesday is the strongest day at 86.3% on time and Sunday the weakest at 73.1%. 13 points is a smaller lever than departure hour, but it is free.
Delay causes
Why JetBlue runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 8,373 reported delay minutes.
- 38%Carrier
- 35%Late-arriving aircraft
- 21%National Airspace System
- 6%Extreme weather
35% 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 8,373 reported delay minutes here, that single category outweighs weather by 6 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 8,373 reported delay minutes.
The largest share of delay minutes, 38%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,221 of the 8,373 delay minutes reported here.
Cancellations sit at 2.27% against a national 1.81%, which is ordinary. Diversions add another 0.49%.
Connections and stage length
What a delay here costs
7.5% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
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 69.1% on time across 616 flights, 10 points below 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 BOS to SAV
Put together: treat all of this as provisional. 616 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 78.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 599 completed flights over 12 months sit behind that.
Related
Where to go next
- BOS to SAV, every carrier
- JetBlue on SAV to BOS, the return leg
- Republic Airways on BOS to SAV80.5%
- JetBlue Airways network-wide record
- Boston Logan International (BOS) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.04 million flight records
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.