Flight number record

YX 5798

Republic Airways · New York to Boston

Route: JFK → BOS
Departs: 17:30
Flights: 286
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5798, 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 5798 draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 286 flights, with a median arrival right on schedule.

The national on-time rate over the same period is 77.6%, so YX 5798 runs 11 points behind the country as a whole. Across a thousand flights that is about 114 extra late arrivals.

On time

66.2%

Arrivals under 15 minutes late, of 278 completed flights

Avg delay

74 min

Across delayed arrivals only, not all flights

Cancelled

2.80%

National rate is 1.81%

1 hour+ late

15.8%

National rate is 8.1%

These figures cover 286 flights between July 2025 and June 2026. Beyond the headline rate, 15.8% 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 5798 flies

YX 5798 flies JFK to BOS without a single fixed slot. Its most common scheduled departure was 17:30, used on 48 of 286 flights, with 14:50 (40 flights) and 14:30 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 17:3048 flights16.8%
Departs 14:5040 flights14.0%
Departs 14:3036 flights12.6%

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 17:30 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.2%, and YX 5798 runs 2 points worse at 66.2%. 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 5798 next to JFK to BOS

Every carrier on JFK to BOS combined arrived on time 73.7% of the time across 5,744 flights, so YX 5798 is 8 points behind it. Republic flew 2,916 flights on the same city pair under all its flight numbers, including this one, and those ran 77.8% on time. Across its whole network Republic Airways managed 78.5%, which this flight trails by 12 points.

YX 5798 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5798thin sample	286	66.2%	74 min	2.80%	C
All Republic Airways on JFK–BOS	2,916	77.8%	74 min	4.39%	B−
All carriers on JFK–BOS	5,744	73.7%	78 min	4.18%	C−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 5798 quarter by quarter

Quarter by quarter YX 5798 held fairly steady: 62.0% in Jul–Sep 2025, 62.7% in Oct–Dec 2025 and 71.6% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights62.0%
Oct–Dec 202579 flights62.7%
Jan–Mar 202624 flights—
Apr–Jun 202691 flights71.6%

Scale runs 55% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5798 did best on Saturday at 89.7% on time and worst on Sunday at 56.1%. Each day rests on about 41 flights, so a gap of 34 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 5798 runs late

One category carries most of the weight here. National Airspace System accounts for 59% of the 6,962 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
59%
Carrier
24%
Late-arriving aircraft
17%
Extreme weather
0%

59% 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 4,113 minutes out of 6,962, against a national NAS share of 21%. The split is drawn from 6,962 delay minutes reported on YX 5798.

Cancellations run at 2.80%, against 1.81% nationally. That is roughly one flight in 40 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. 15.8% 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.

The same number turns up on two other city pairs in the data, including LGA to SAV (37) and BOS to CHS (16), but none flew often enough under YX 5798 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to JFK to BOS only.

One caution: this is a thin sample. 286 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 5798

For a booking, the cancellation rate is the figure to plan around on YX 5798: 2.80% of its 286 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