Flight number record

B6 249

JetBlue Airways · Boston to Savannah

Route: BOS → SAV
Departs: 07:25
Flights: 349
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s B6 249, check with JetBlue Airways.

B6 249 lands a B−, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 349 flights, with a median arrival 11 minutes early.

Set against the rest of the country, B6 249's record is 5 points better than the US average of 77.3%. That gap is worth roughly 54 fewer late arrivals for every thousand flights.

On time

82.7%

Arrivals under 15 minutes late, of 335 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

3.72%

National rate is 1.89%

1 hour+ late

6.3%

National rate is 8.3%

These figures cover 349 flights between September 2025 and August 2026. The median arrival is 11 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.

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Schedule

When B6 249 flies

B6 249 flies BOS to SAV without a single fixed slot. Its most common scheduled departure was 07:25, used on 57 of 349 flights.

Departs 07:2557 flights16.3%

Scale runs 0% to 100%.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 07:25 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and B6 249 runs 7 points worse at 82.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

B6 249 next to BOS to SAV

Every carrier on BOS to SAV combined arrived on time 79.4% of the time across 1,023 flights, so B6 249 is 3 points ahead of it. JetBlue flew 581 flights on the same city pair under all its flight numbers, including this one, and those ran 77.9% on time. Across its whole network JetBlue Airways managed 71.3%, which this flight beats by 11 points.

B6 249 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
B6 249thin sample	349	82.7%	64 min	3.72%	B−
All JetBlue Airways on BOS–SAV	581	77.9%	66 min	2.93%	B
All carriers on BOS–SAV	1,023	79.4%	58 min	2.64%	B
JetBlue Airways, whole network	240,615	71.3%	77 min	3.56%	C−

Across the year

B6 249 quarter by quarter

B6 249 did not run the same all year. Its best quarter was Apr–Jun 2026 at 90.7% on time and its weakest Jul–Sep 2026 at 76.8%, a swing of 14 points on roughly 87 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202522 flights—
Oct–Dec 202592 flights78.9%
Jan–Mar 202686 flights79.0%
Apr–Jun 202687 flights90.7%
Jul–Sep 202662 flights76.8%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, B6 249 did best on Wednesday at 88.6% on time and worst on Sunday at 74.0%. Each day rests on about 50 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late B6 249 runs when it is late

B6 249 often beats the schedule: 138 of 335 completed flights, 41%, arrived 15 minutes or more early. The 58 late arrivals split 21 under half an hour, 16 between 30 and 60 minutes, and 21 an hour or more.

15+ min early138 flights41.2%
Within 15 min139 flights41.5%
15–29 min late21 flights6.3%
30–59 min late16 flights4.8%
1–2 hours late12 flights3.6%
2+ hours late9 flights2.7%

Scale runs 0% to 100%.

Share of 335 completed flights by arrival against schedule.

6 of 40 late departures made up the time and arrived on time, 15% of them. In the other direction, 24 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SAV.

The worst days

Worst days for B6 249

The latest arrival of the period was on 6 March 2026, 6 hours 12 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across March, February, November and January, with no single month standing out.

The latest arrivals of B6 249 in the period
Date	Arrived late by	Largest filed cause
6 March 2026	6 hours 12 minutes	Extreme weather
16 March 2026	3 hours 59 minutes	Late-arriving aircraft
22 February 2026	3 hours 42 minutes	Carrier
1 November 2025	3 hours 7 minutes	Carrier
6 January 2026	2 hours 25 minutes	Late-arriving aircraft

Delay causes

Why B6 249 runs late

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 3,722 reported delay minutes.

Carrier
40%
National Airspace System
33%
Late-arriving aircraft
15%
Extreme weather
12%

Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.0 times the usual weather exposure. The split is drawn from 3,722 delay minutes reported on B6 249.

Cancellations run at 3.72%, against 1.89% nationally. That is about one flight in 25 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 routes

What a delay on this flight costs

6.3% of arrivals land an hour or more late, close to the national 8.3%, so 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.

Every one of the 349 flights under B6 249 in the data flew BOS to SAV. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 349 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 B6 249

For a booking, the cancellation rate is the figure to plan around on B6 249: 3.72% of its 349 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.

Where to go next

A flight number here means JetBlue Airways’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures