Flight number record

YX 5745

Republic Airways · New York to Boston

Route: LGA → BOS
Departs: 11:00
Flights: 302
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5745, 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 5745 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 about an hour on average. That is a workable record, not a spotless one. That rests on 302 flights, with a median arrival 9 minutes early.

On time

80.5%

Arrivals under 15 minutes late, of 293 completed flights

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

2.98%

National rate is 1.81%

1 hour+ late

6.1%

National rate is 8.1%

These figures cover 302 flights between July 2025 and June 2026. The median arrival is 9 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.

Schedule

When YX 5745 flies

YX 5745 flies LGA to BOS without a single fixed slot. Its most common scheduled departure was 11:00, used on 240 of 302 flights, with 10:59 (62 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:00240 flights79.5%
Departs 10:5962 flights20.5%

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 11:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and YX 5745 runs level with that at 80.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

YX 5745 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 5745 is 7 points ahead of 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 beats by 2 points.

YX 5745 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5745thin sample	302	80.5%	62 min	2.98%	B
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 5745 quarter by quarter

YX 5745 did not run the same all year. Its best quarter was Jan–Mar 2026 at 85.1% on time and its weakest Oct–Dec 2025 at 70.1%, a swing of 15 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 202578 flights81.8%
Oct–Dec 202568 flights70.1%
Jan–Mar 202674 flights85.1%
Apr–Jun 202682 flights84.1%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5745 did best on Friday at 87.5% on time and worst on Sunday at 71.7%. Each day rests on about 43 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 5745 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 3,527 reported delay minutes.

Late-arriving aircraft
35%
Carrier
34%
National Airspace System
29%
Extreme weather
2%
Security
0%

35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,527 reported delay minutes here, that single category outweighs weather by 19 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,527 delay minutes reported on YX 5745.

Cancellations run at 2.98%, against 1.81% nationally. That is roughly one flight in 30 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

6.1% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

The same number turns up on one other city pair in the data, including SDF to MCO (14), but none flew often enough under YX 5745 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LGA to BOS only.

One caution: this is a thin sample. 302 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 5745

For a booking, the cancellation rate is the figure to plan around on YX 5745: 2.98% of its 302 scheduled flights did not operate. A late arrival costs about 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