Flight number record

YX 5746

Republic Airways · New York to Boston

Route: LGA → BOS
Departs: 19:00
Flights: 303
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5746, 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 5746 earns an F−, which is as low as this site's scale goes for a reason. Only 53.5% of flights arrive inside the 15-minute window, 24 points worse than the national rate of 77.6%. Late arrivals average a little over an hour. Treat any tight connection here as a coin flip. That rests on 303 flights, with a median arrival 8 minutes late.

The national on-time rate over the same period is 77.6%, so YX 5746 runs 24 points behind the country as a whole. Across a thousand flights that is about 241 extra late arrivals.

On time

53.5%

Arrivals under 15 minutes late, of 275 completed flights

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

9.24%

National rate is 1.81%

1 hour+ late

21.1%

National rate is 8.1%

These figures cover 303 flights between July 2025 and June 2026. Beyond the headline rate, 21.1% 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 5746 flies

YX 5746 flies LGA to BOS without a single fixed slot. Its most common scheduled departure was 19:00, used on 180 of 303 flights, with 18:59 (123 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 19:00180 flights59.4%
Departs 18:59123 flights40.6%

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 19:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and YX 5746 runs 15 points worse at 53.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

YX 5746 next to LGA to BOS

Every carrier on LGA to BOS combined arrived on time 73.8% of the time across 7,255 flights, so YX 5746 is 20 points behind it. Republic flew 6,712 flights on the same city pair under all its flight numbers, including this one, and those ran 73.6% on time. Across its whole network Republic Airways managed 78.5%, which this flight trails by 25 points.

YX 5746 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5746thin sample	303	53.5%	69 min	9.24%	F−
All Republic Airways on LGA–BOS	6,712	73.6%	68 min	5.44%	C−
All carriers on LGA–BOS	7,255	73.8%	69 min	5.32%	C−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 5746 quarter by quarter

YX 5746 did not run the same all year. Its best quarter was Jan–Mar 2026 at 60.9% on time and its weakest Jul–Sep 2025 at 47.2%, a swing of 14 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 flights47.2%
Oct–Dec 202567 flights48.3%
Jan–Mar 202677 flights60.9%
Apr–Jun 202680 flights56.6%

Scale runs 40% to 65%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5746 did best on Tuesday at 66.7% on time and worst on Wednesday at 46.8%. Each day rests on about 43 flights, so a gap of 20 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 5746 runs late

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 8,886 reported delay minutes.

National Airspace System
41%
Late-arriving aircraft
30%
Carrier
28%
Extreme weather
1%

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 3,670 minutes out of 8,886, against a national NAS share of 21%. The split is drawn from 8,886 delay minutes reported on YX 5746.

Cancellations run at 9.24%, against 1.81% nationally. That is roughly one flight in ten 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. 21.1% 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.

Every one of the 303 flights under YX 5746 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. 303 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 5746

For a booking, the cancellation rate is the figure to plan around on YX 5746: 9.24% of its 303 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.

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