Flight number record

YX 5735

Republic Airways · Boston to New York

Route: BOS → LGA
Departs: 08:00
Flights: 268
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5735, 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 5735 earns an A−. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 268 flights, with a median arrival 11 minutes early.

Set against the rest of the country, YX 5735's record is 8 points better than the US average of 77.3%. That gap is worth roughly 84 fewer late arrivals for every thousand flights.

On time

85.7%

Arrivals under 15 minutes late, of 259 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

3.36%

National rate is 1.89%

1 hour+ late

5.4%

National rate is 8.3%

These figures cover 268 flights between September 2025 and August 2026. The median arrival is 11 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 5735 flies

YX 5735 is scheduled to leave Boston (BOS) at 08:00 local time and reach New York (LGA) at 09:25. That slot held for 267 of the 268 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 08:00267 flights99.6%

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 08:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and YX 5735 runs level with that at 85.7%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

YX 5735 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 5735 is 10 points ahead of 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 beats by 8 points.

YX 5735 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5735thin sample	268	85.7%	72 min	3.36%	A−
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 5735 quarter by quarter

YX 5735 did not run the same all year. Its best quarter was Apr–Jun 2026 at 92.2% on time and its weakest Jan–Mar 2026 at 80.6%, a swing of 12 points on roughly 67 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 202527 flights—
Oct–Dec 202561 flights83.3%
Jan–Mar 202671 flights80.6%
Apr–Jun 202664 flights92.2%
Jul–Sep 202645 flights81.0%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5735 ranged from 81.2% on Friday to 91.1% on Monday. With about 38 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Arrival by arrival

How late YX 5735 runs when it is late

YX 5735 often beats the schedule: 97 of 259 completed flights, 37%, arrived 15 minutes or more early. The 37 late arrivals split 10 under half an hour, 13 between 30 and 60 minutes, and 14 an hour or more.

15+ min early97 flights37.5%
Within 15 min125 flights48.3%
15–29 min late10 flights3.9%
30–59 min late13 flights5.0%
1–2 hours late7 flights2.7%
2+ hours late7 flights2.7%

Scale runs 0% to 100%.

Share of 259 completed flights by arrival against schedule.

Time lost at the gate mostly stays lost. Of 27 departures that left 15 minutes late or more, only 2 made it up before arrival. 12 flights left on time and still arrived late.

The worst days

Worst days for YX 5735

The latest arrival of the period was on 19 August 2026, 4 hours 54 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in August 2026.

The latest arrivals of YX 5735 in the period
Date	Arrived late by	Largest filed cause
19 August 2026	4 hours 54 minutes	Carrier
16 January 2026	3 hours 5 minutes	Carrier
12 June 2026	2 hours 48 minutes	Carrier
27 August 2026	2 hours 29 minutes	National Airspace System
28 August 2026	2 hours 14 minutes	Carrier

Delay causes

Why YX 5735 runs late

Carrier accounts for 54% of the 2,658 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
54%
National Airspace System
34%
Late-arriving aircraft
7%
Extreme weather
4%

The largest share of delay minutes, 54%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,442 of the 2,658 delay minutes reported here. The split is drawn from 2,658 delay minutes reported on YX 5735.

Cancellations run at 3.36%, 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

5.4% 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 a little over an hour, which a normal layover absorbs.

The same number turns up on three other city pairs in the data, including DCA to BOS (5), LGA to CLE (1) and CLE to LGA (1), but none flew often enough under YX 5735 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. 268 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 5735

For a booking, the cancellation rate is the figure to plan around on YX 5735: 3.36% of its 268 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures