Flight number record

YX 5725

Republic Airways · New York to Boston

Route: LGA → BOS
Departs: 17:00
Flights: 354
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5725, 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 5725 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.6%. The late ones land a little over an hour behind schedule. That rests on 354 flights, with a median arrival 5 minutes early.

The national on-time rate over the same period is 77.6%, so YX 5725 runs 9 points behind the country as a whole. Across a thousand flights that is about 91 extra late arrivals.

On time

68.5%

Arrivals under 15 minutes late, of 327 completed flights

Avg delay

74 min

Across delayed arrivals only, not all flights

Cancelled

7.34%

National rate is 1.81%

1 hour+ late

15.6%

National rate is 8.1%

These figures cover 354 flights between July 2025 and June 2026. Beyond the headline rate, 15.6% 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 5725 flies

YX 5725 is scheduled to leave New York (LGA) at 17:00 local time and reach Boston (BOS) at 18:28. That slot held for 296 of the 354 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 17:00296 flights83.6%
Departs 16:5952 flights14.7%

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 17:00 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and YX 5725 runs level with that at 68.5%. 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 5725 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 5725 is 5 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 10 points.

YX 5725 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5725thin sample	354	68.5%	74 min	7.34%	C−
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 5725 quarter by quarter

YX 5725 did not run the same all year. Its best quarter was Jan–Mar 2026 at 77.5% on time and its weakest Apr–Jun 2026 at 64.1%, a swing of 13 points on roughly 89 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 202592 flights64.7%
Oct–Dec 202589 flights67.9%
Jan–Mar 202690 flights77.5%
Apr–Jun 202683 flights64.1%

Scale runs 55% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5725 did best on Saturday at 90.2% on time and worst on Thursday at 53.2%. Each day rests on about 51 flights, so a gap of 37 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 5725 runs late

One category carries most of the weight here. National Airspace System accounts for 58% of the 7,627 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
58%
Late-arriving aircraft
25%
Carrier
17%

58% 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 4,410 minutes out of 7,627, against a national NAS share of 21%. The split is drawn from 7,627 delay minutes reported on YX 5725.

Cancellations run at 7.34%, against 1.81% nationally. That is roughly one flight in fifteen 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. 15.6% 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 354 flights under YX 5725 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. 354 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 5725

For a booking, the cancellation rate is the figure to plan around on YX 5725: 7.34% of its 354 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