Flight number record

YX 5745

Republic Airways · New York to Boston

Route: LGA → BOS
Departs: 11:00
Flights: 312
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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−, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 312 flights, with a median arrival 10 minutes early.

On time

79.5%

Arrivals under 15 minutes late, of 302 completed flights

Avg delay

64 min

Across delayed arrivals only, not all flights

Cancelled

3.21%

National rate is 1.89%

1 hour+ late

6.3%

National rate is 8.3%

These figures cover 312 flights between September 2025 and August 2026. The median arrival is 10 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.

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Schedule

When YX 5745 flies

YX 5745 is scheduled to leave New York (LGA) at 11:00 local time and reach Boston (BOS) at 12:22. That slot held for 264 of the 312 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 11:00264 flights84.6%
Departs 10:5947 flights15.1%

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 11:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and YX 5745 runs level with that at 79.5%. 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 5745 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 5745 is 6 points ahead of 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%, close to this flight's figure.

YX 5745 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5745thin sample	312	79.5%	64 min	3.21%	B−
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 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 78 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 flights70.1%
Jan–Mar 202674 flights85.1%
Apr–Jun 202682 flights84.1%
Jul–Sep 202662 flights78.3%

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

By weekday, YX 5745 did best on Friday at 85.4% on time and worst on Sunday at 72.3%. Each day rests on about 45 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late YX 5745 runs when it is late

YX 5745 often beats the schedule: 116 of 302 completed flights, 38%, arrived 15 minutes or more early. The 62 late arrivals split 26 under half an hour, 17 between 30 and 60 minutes, and 19 an hour or more.

15+ min early116 flights38.4%
Within 15 min124 flights41.1%
15–29 min late26 flights8.6%
30–59 min late17 flights5.6%
1–2 hours late12 flights4.0%
2+ hours late7 flights2.3%

Scale runs 0% to 100%.

Share of 302 completed flights by arrival against schedule.

Time lost at the gate mostly stays lost. Of 45 departures that left 15 minutes late or more, only 3 made it up before arrival. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at BOS.

The worst days

Worst days for YX 5745

The latest arrival of the period was on 28 August 2026, 7 hours 54 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.

The latest arrivals of YX 5745 in the period
Date	Arrived late by	Largest filed cause
28 August 2026	7 hours 54 minutes	Carrier
25 September 2025	4 hours 28 minutes	National Airspace System
14 December 2025	4 hours 17 minutes	Late-arriving aircraft
2 December 2025	3 hours 17 minutes	Late-arriving aircraft
2 April 2026	2 hours 34 minutes	Late-arriving aircraft

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 3,995 reported delay minutes.

Carrier
40%
National Airspace System
30%
Late-arriving aircraft
28%
Extreme weather
2%
Security
0%

The largest share of delay minutes, 40%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,593 of the 3,995 delay minutes reported here. The split is drawn from 3,995 delay minutes reported on YX 5745.

Cancellations run at 3.21%, against 1.89% nationally. That is about 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

6.3% of arrivals land an hour or more late, close to the national 8.3%, so 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. 312 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: 3.21% of its 312 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures