Flight number record

YX 5736

Republic Airways · Boston to New York

Route: BOS → LGA
Departs: 15:00
Flights: 304
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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−. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 304 flights, with a median arrival 3 minutes early.

The national on-time rate over the same period is 77.6%, so YX 5736 runs 5 points behind the country as a whole. Across a thousand flights that is about 53 extra late arrivals.

On time

72.3%

Arrivals under 15 minutes late, of 289 completed flights

Avg delay

87 min

Across delayed arrivals only, not all flights

Cancelled

4.93%

National rate is 1.81%

1 hour+ late

13.1%

National rate is 8.1%

These figures cover 304 flights between July 2025 and June 2026. Beyond the headline rate, 13.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

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 303 of the 304 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 15:00303 flights99.7%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 72.4%, and YX 5736 runs level with that at 72.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

YX 5736 next to BOS to LGA

Every carrier on BOS to LGA combined arrived on time 77.7% of the time across 7,251 flights, so YX 5736 is 5 points behind it. Republic flew 6,708 flights on the same city pair under all its flight numbers, including this one, and those ran 76.6% on time. Across its whole network Republic Airways managed 78.5%, which this flight trails by 6 points.

YX 5736 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5736thin sample	304	72.3%	87 min	4.93%	C−
All Republic Airways on BOS–LGA	6,708	76.6%	75 min	5.81%	B−
All carriers on BOS–LGA	7,251	77.7%	77 min	5.70%	B−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	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 76 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 202579 flights70.7%
Oct–Dec 202568 flights66.2%
Jan–Mar 202674 flights77.6%
Apr–Jun 202683 flights74.4%

Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5736 did best on Wednesday at 80.9% on time and worst on Thursday at 53.2%. Each day rests on about 43 flights, so a gap of 28 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 5736 runs late

One category carries most of the weight here. National Airspace System accounts for 59% of the 6,994 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.

National Airspace System
59%
Carrier
19%
Late-arriving aircraft
17%
Extreme weather
5%

59% 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 4,107 minutes out of 6,994, against a national NAS share of 21%. The split is drawn from 6,994 delay minutes reported on YX 5736.

Cancellations run at 4.93%, against 1.81% nationally. That is about 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. 304 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: 4.93% of its 304 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.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures