Flight number record
YX 5736
Republic Airways · Boston to New York
- Route
- BOS → LGA
- Departs
- 15:00
- Flights
- 308
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5736, 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 5736 sits in the middle of the pack with a C−. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.3%. The late ones land an hour and a half behind schedule. That rests on 308 flights, with a median arrival 4 minutes early.
Key figures
On time
73.5%
Arrivals under 15 minutes late, of 291 completed flights
Avg delay
86 min
Across delayed arrivals only, not all flights
Cancelled
5.52%
National rate is 1.89%
1 hour+ late
14.1%
National rate is 8.3%
These figures cover 308 flights between September 2025 and August 2026. Beyond the headline rate, 14.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When YX 5736 flies
YX 5736 is scheduled to leave Boston (BOS) at 15:00 local time and reach New York (LGA) at 16:30. That slot held for 307 of the 308 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 15:00307 flights99.7%
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 15:00 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and YX 5736 runs level with that at 73.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
YX 5736 next to BOS to LGA
Every carrier on BOS to LGA combined arrived on time 76.2% of the time across 7,442 flights, so YX 5736 is 3 points behind it. Republic flew 6,971 flights on the same city pair under all its flight numbers, including this one, and those ran 75.2% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5736thin sample | 308 | 73.5% | 86 min | 5.52% | C− |
| All Republic Airways on BOS–LGA | 6,971 | 75.2% | 77 min | 6.50% | B− |
| All carriers on BOS–LGA | 7,442 | 76.2% | 78 min | 6.40% | B− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 5736 quarter by quarter
YX 5736 did not run the same all year. Its best quarter was Jan–Mar 2026 at 77.6% on time and its weakest Oct–Dec 2025 at 66.2%, a swing of 11 points on roughly 77 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 202526 flights—
- Oct–Dec 202568 flights66.2%
- Jan–Mar 202674 flights77.6%
- Apr–Jun 202683 flights74.4%
- Jul–Sep 202657 flights74.5%
Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, YX 5736 did best on Wednesday at 83.7% on time and worst on Thursday at 51.1%. Each day rests on about 44 flights, so a gap of 33 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 5736 runs when it is late
YX 5736 often beats the schedule: 80 of 291 completed flights, 27%, arrived 15 minutes or more early. When YX 5736 is late it tends to be very late: 41 of its 77 late arrivals were an hour or more behind, and 21 were two hours or more.
- 15+ min early80 flights27.5%
- Within 15 min134 flights46.0%
- 15–29 min late15 flights5.2%
- 30–59 min late21 flights7.2%
- 1–2 hours late20 flights6.9%
- 2+ hours late21 flights7.2%
Scale runs 0% to 100%.
Share of 291 completed flights by arrival against schedule.
10 of 76 late departures made up the time and arrived on time, 13% of them. 11 flights left on time and still arrived late.
The worst days
Worst days for YX 5736
The latest arrival of the period was on 6 August 2026, 5 hours 10 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 August 2026 | 5 hours 10 minutes | National Airspace System |
| 23 June 2026 | 4 hours 8 minutes | National Airspace System |
| 13 October 2025 | 3 hours 52 minutes | National Airspace System |
| 19 January 2026 | 3 hours 33 minutes | Late-arriving aircraft |
| 14 October 2025 | 3 hours 28 minutes | Carrier |
Delay causes
Why YX 5736 runs late
National Airspace System accounts for 63% of the 6,605 delay minutes carriers reported here, and the remaining four split what is left.
- 63%National Airspace System
- 20%Late-arriving aircraft
- 17%Carrier
63% 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 4,178 minutes out of 6,605, against a national NAS share of 21%. The split is drawn from 6,605 delay minutes reported on YX 5736.
Cancellations run at 5.52%, against 1.89% nationally. That is roughly one flight in twenty 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
14.1% 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 same number turns up on one other city pair in the data, including DCA to BOS (1), but none flew often enough under YX 5736 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to LGA only.
One caution: this is a thin sample. 308 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 5736
For a booking, the cancellation rate is the figure to plan around on YX 5736: 5.52% of its 308 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- BOS to LGA, every carrier and departure
- LGA to BOS, the return direction
- Republic Airways 5721 on the same route67.1%
- Republic Airways 5716 on the same route61.4%
- Republic Airways 5744 on the same route85.8%
- Republic Airways 5831 on the same route62.2%
- Republic Airways 5730 on the same route77.1%
- Republic Airways 5732 on the same route86.1%
- Boston Logan International (BOS) delay statistics
- LaGuardia (LGA) 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.