Route reliability record
SAV→BOS
Savannah to Boston
- Flights
- 1,023
- Period
- September 2025 to August 2026
- Distance
- 901 mi
- Carriers
- 3
This route carries a cancellation problem, not just a delay problem: 3.4% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, about seven flights in ten arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 1,023 SAV to BOS flights, of which JetBlue Airways flew 581 at 70.1% on time.
Best time to fly SAV to BOS: a 8am–11am departure, ideally on a Saturday. Flights in that window arrived on time 78.2% of the time and Saturday flights 76.2%, against 68.5% for the route overall.
The national on-time rate over the same period is 77.3%, so this route runs 9 points behind the country as a whole. Across a thousand flights that is about 88 extra late arrivals.
Key figures
On time
68.5%
Arrivals under 15 minutes late, of 987 completed flights
Avg delay
82 min
Across delayed arrivals only, not all flights
Cancelled
3.42%
National rate is 1.89%
Best carrier
JetBlue
70.1% on time across 581 flights
These figures cover 1,023 flights between September 2025 and August 2026. Beyond the headline rate, 13.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on SAV to BOS
The two carriers here are closely matched: 3 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| JetBlue Airways | 581 | 70.1% | 84 min | 3.27% | C− |
| Republic Airways | 426 | 67.5% | 81 min | 3.76% | C− |
| Delta Air Linesthin sample | 16 | 37.5% | 51 min | 0.00% | F+ |
Republic Airways cancels 3.8% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Flight by flight
Flights on SAV to BOS
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
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Best ways to make this trip
The most reliable ways to fly Savannah to Boston
Every airline on this route, ranked by how often a scheduled flight actually operated and arrived on time, with its best departure time and most punctual flight number. No nearby airport pair beat these.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. SAV → BOSSavannah to Boston | JetBlue Airways | 67.8% | 70.1% | 3.27% | 8am–11am, Sat | B6 450 16:10 |
| 2. SAV → BOSSavannah to Boston | Republic Airways | 65.0% | 67.5% | 3.76% | 11am–2pm, Sat | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 19 points, against 3 points between the best and worst carrier.
- 5am–8am26 flights—
- 8am–11am155 flights78.2%
- 11am–2pm256 flights73.8%
- 2pm–5pm402 flights58.8%
- 5pm–8pm78 flights75.3%
- 8pm–5am106 flights65.0%
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 78.2% of the time, against 58.8% for the afternoon window. That is 19 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 402 flights scheduled in it.
Explore
Filter SAV to BOS by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On SAV to BOS, the best departure window is 8am–11am at 78.2% on time and the worst is 2pm–5pm at 58.8%, a wide gap of 19.4 points. All US flights leaving 8am–11am ran 83.9%.
- 5–8am—
- 8–11am78.2%
- 11am–2pm73.8%
- 2–5pm58.8%
- 5–8pm75.3%
- 8pm–5am65.0%
best all US flightsScale 50% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 37 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
Delays peak in September, when the on-time rate falls to 45.6%. January is the strongest month at 82.4%. Moving a flexible trip across that boundary buys 37 points. April was the busiest month here, with 108 flights.
Across the week, Saturday is the strongest day at 76.2% on time and Sunday the weakest at 56.9%, a spread of 19 points.
Delay causes
Why this route gets delayed
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 25,000 reported delay minutes.
- 41%National Airspace System
- 30%Late-arriving aircraft
- 28%Carrier
- 2%Extreme weather
41% 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 10,000 minutes out of 25,000, against a national NAS share of 21%. The split is drawn from 25,451 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 78.2% on time here.
Cancellations run at 3.42%, against 1.89% nationally. That is about 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 actually costs
13.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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.
The return leg is a different operation and performs like one: it runs 79.4% on time across 1,023 flights, 11 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 11 points of difference.
One caution: this is a thin sample. 1,023 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.
Work out the risk of missing a connection in BOS after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 3.42% cancellation rate. A late arrival costs you a little over an hour; 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. 987 completed flights over 12 months sit behind that.
Common questions
SAV to BOS questions
How often is SAV to BOS delayed?
About one flight in three arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 31.5% of the 1,023 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on SAV to BOS?
JetBlue Airways leads at 70.1% on time across 581 flights. Republic Airways is at the other end on 67.5%, a gap of 3 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on SAV to BOS?
The 8am–11am departure window is the strongest at 78.2% on time. The 2pm–5pm window is the weakest at 58.8%, 19 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are September delays on SAV to BOS?
September is the weakest month at 45.6% on time, compared with 82.4% in January. Across the year that is 37 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- BOS to SAV — the return legseparate record
- Boston Logan International (BOS) delay statistics
- JetBlue Airways on SAV to BOS70.1%
- Republic Airways on SAV to BOS67.5%
- SAV to ATL, a related route87.1%
- DCA to BOS, a related route70.1%
- SAV to CLT, a related route86.0%
- JetBlue Airways on-time record70.1%
- Republic Airways on-time record67.5%
- Delta Air Lines on-time record37.5%
- The US routes with the most cancellations
- What a cancellation rate actually tells you (and what it hides)
Direction matters. SAV to BOS and BOS to SAV are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.