Flight number record
YX 5725
Republic Airways · New York to Boston
- Route
- LGA → BOS
- Departs
- 17:00
- Flights
- 345
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5725, check with Republic Airways. Republic Airways flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
YX 5725 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 345 flights, with a median arrival 4 minutes early.
The national on-time rate over the same period is 77.3%, so YX 5725 runs 10 points behind the country as a whole. Across a thousand flights that is about 99 extra late arrivals.
Key figures
On time
67.4%
Arrivals under 15 minutes late, of 316 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
8.12%
National rate is 1.89%
1 hour+ late
15.5%
National rate is 8.3%
These figures cover 345 flights between September 2025 and August 2026. Beyond the headline rate, 15.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When YX 5725 flies
YX 5725 is scheduled to leave New York (LGA) at 17:00 local time and reach Boston (BOS) at 18:28. That slot held for 314 of the 345 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 17:00314 flights91.0%
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 17:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and YX 5725 runs level with that at 67.4%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
YX 5725 next to LGA to BOS
Every carrier on LGA to BOS combined arrived on time 73.1% of the time across 7,443 flights, so YX 5725 is 6 points behind it. Republic flew 6,974 flights on the same city pair under all its flight numbers, including this one, and those ran 73.1% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 11 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5725thin sample | 345 | 67.4% | 70 min | 8.12% | C− |
| All Republic Airways on LGA–BOS | 6,974 | 73.1% | 70 min | 6.28% | C− |
| All carriers on LGA–BOS | 7,443 | 73.1% | 70 min | 6.17% | C− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 5725 quarter by quarter
YX 5725 did not run the same all year. Its best quarter was Jan–Mar 2026 at 77.5% on time and its weakest Apr–Jun 2026 at 64.1%, a swing of 13 points on roughly 86 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 202530 flights—
- Oct–Dec 202589 flights67.9%
- Jan–Mar 202690 flights77.5%
- Apr–Jun 202683 flights64.1%
- Jul–Sep 202653 flights69.6%
Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, YX 5725 did best on Saturday at 90.6% on time and worst on Thursday at 53.2%. Each day rests on about 49 flights, so a gap of 37 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 5725 runs when it is late
YX 5725 often beats the schedule: 111 of 316 completed flights, 35%, arrived 15 minutes or more early. The 103 late arrivals split 23 under half an hour, 31 between 30 and 60 minutes, and 49 an hour or more.
- 15+ min early111 flights35.1%
- Within 15 min102 flights32.3%
- 15–29 min late23 flights7.3%
- 30–59 min late31 flights9.8%
- 1–2 hours late34 flights10.8%
- 2+ hours late15 flights4.7%
Scale runs 0% to 100%.
Share of 316 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 96 departures that left 15 minutes late or more, only 6 made it up before arrival. 13 flights left on time and still arrived late.
The worst days
Worst days for YX 5725
The latest arrival of the period was on 19 May 2026, 4 hours 29 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 May 2026 | 4 hours 29 minutes | National Airspace System |
| 17 September 2025 | 3 hours 58 minutes | Late-arriving aircraft |
| 23 September 2025 | 3 hours 34 minutes | Carrier |
| 9 July 2026 | 3 hours 12 minutes | Late-arriving aircraft |
| 10 May 2026 | 3 hours 6 minutes | Late-arriving aircraft |
Delay causes
Why YX 5725 runs late
National Airspace System accounts for 50% of the 7,223 delay minutes carriers reported here, and the remaining four split what is left.
- 50%National Airspace System
- 31%Late-arriving aircraft
- 18%Carrier
- 1%Extreme weather
50% 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 3,634 minutes out of 7,223, against a national NAS share of 21%. The split is drawn from 7,223 delay minutes reported on YX 5725.
Cancellations run at 8.12%, against 1.89% nationally. That is about one flight in twelve 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
15.5% 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.
Every one of the 345 flights under YX 5725 in the data flew LGA to BOS. 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. 345 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 YX 5725
For a booking, the cancellation rate is the figure to plan around on YX 5725: 8.12% of its 345 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- LGA to BOS, every carrier and departure
- BOS to LGA, the return direction
- Republic Airways 5761 on the same route79.0%
- Republic Airways 5745 on the same route79.5%
- Republic Airways 5746 on the same route56.0%
- Republic Airways 5819 on the same route55.7%
- Republic Airways 5727 on the same route61.5%
- LaGuardia (LGA) delay statistics
- Boston Logan International (BOS) delay statistics
- Republic Airways on-time record
- Every Republic Airways flight number with a record
- The most and least reliable flight numbers in the US
- What a cancellation rate actually tells you (and what it hides)
A flight number here means Republic 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 ; recomputed monthly. How this data is collected.