Carrier route record
YXBOS→SAV
Republic Airways · Boston to Savannah
- Flights
- 416
- Period
- July 2025 to June 2026
- Share of route
- 39%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Republic Airways.
Republic on BOS to SAV lands a B, 3 points 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 roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 416 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 Republic 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
80.5%
Arrivals under 15 minutes late, of 410 completed flights
Avg delay
44 min
Across delayed arrivals only, not all flights
Cancelled
1.44%
National rate is 1.81%
Whole route
80.0%
Every carrier on BOS to SAV, 1,076 flights
These figures cover 416 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
Republic against every carrier on BOS to SAV
Republic flew 416 of the 1,076 flights on BOS to SAV, about 39% of it. Its 80.5% on time is about level with the route as a whole at 80.0%. Ranked by on-time rate it is number three 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 (this page) | 416 | 80.5% | 44 min | 1.44% | B |
| JetBlue Airways | 616 | 78.6% | 65 min | 2.27% | B |
Flight by flight
Republic flight numbers on BOS to SAV
Departure window
When Republic runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 416 flights.
- 5am–8am9 flights—
- 8am–11am74 flights82.4%
- 11am–2pm313 flights79.8%
- 2pm–5pm20 flights—
- 5pm–8pm—
- 8pm–5am—
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
The 8am–11am window is the strongest at 82.4% on time. The full set of windows spans 3 points.
Across the year
Republic on BOS to SAV through the year
December is the weak month at 64.5% on time, against 90.9% in August. 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. May was the busiest month here, with 40 flights.
Across the week, Wednesday is the strongest day at 86.0% on time and Sunday the weakest at 75.9%. 10 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Republic runs late on this route
One category carries most of the weight here. Carrier accounts for 48% of the 3,515 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.
- 48%Carrier
- 36%National Airspace System
- 13%Late-arriving aircraft
- 2%Extreme weather
36% 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 1,273 minutes out of 3,515, against a national NAS share of 21%. The split is drawn from 3,515 reported delay minutes.
The largest share of delay minutes, 48%, 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 1,704 of the 3,515 delay minutes reported here.
Cancellations sit at 1.44% against a national 1.81%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 4.6% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
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 68.0% on time across 416 flights, 13 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 13 points of difference.
One caution: this is a thin sample. 416 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 Republic on BOS to SAV
Put together: treat all of this as provisional. 416 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 80.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 410 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.