Flight number record

YX 5798

Republic Airways · New York to Boston

Route: JFK → BOS
Departs: 17:30
Flights: 286
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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 D−. Roughly 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 3 minutes late.

The national on-time rate over the same period is 77.3%, so YX 5798 runs 17 points behind the country as a whole. Across a thousand flights that is about 165 extra late arrivals.

On time

60.8%

Arrivals under 15 minutes late, of 268 completed flights

Avg delay

79 min

Across delayed arrivals only, not all flights

Cancelled

6.29%

National rate is 1.89%

1 hour+ late

18.3%

National rate is 8.3%

These figures cover 286 flights between September 2025 and August 2026. Beyond the headline rate, 18.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

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 109 of 286 flights, with 14:50 (40 flights) and 14:40 (34 flights) next.

Departs 17:30109 flights38.1%
Departs 14:5040 flights14.0%
Departs 14:4034 flights11.9%

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 17:30 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and YX 5798 runs 7 points worse at 60.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Against the route

YX 5798 next to JFK to BOS

Every carrier on JFK to BOS combined arrived on time 72.1% of the time across 5,615 flights, so YX 5798 is 11 points behind it. Republic flew 2,858 flights on the same city pair under all its flight numbers, including this one, and those ran 75.8% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 17 points.

YX 5798 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5798thin sample	286	60.8%	79 min	6.29%	D−
All Republic Airways on JFK–BOS	2,858	75.8%	77 min	5.14%	B−
All carriers on JFK–BOS	5,615	72.1%	79 min	5.02%	C−
Republic Airways, whole network	364,452	78.1%	74 min	4.55%	B−

Across the year

YX 5798 quarter by quarter

YX 5798 did not run the same all year. Its best quarter was Apr–Jun 2026 at 71.6% on time and its weakest Jul–Sep 2025 at 26.7%, a swing of 45 points on roughly 72 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 202530 flights26.7%
Oct–Dec 202579 flights62.7%
Jan–Mar 202624 flights—
Apr–Jun 202691 flights71.6%
Jul–Sep 202662 flights53.8%

Scale runs 20% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5798 did best on Saturday at 84.2% on time and worst on Friday at 50.0%. Each day rests on about 41 flights, so a gap of 34 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late YX 5798 runs when it is late

YX 5798 often beats the schedule: 76 of 268 completed flights, 28%, arrived 15 minutes or more early. The 105 late arrivals split 21 under half an hour, 35 between 30 and 60 minutes, and 49 an hour or more.

15+ min early76 flights28.4%
Within 15 min87 flights32.5%
15–29 min late21 flights7.8%
30–59 min late35 flights13.1%
1–2 hours late32 flights11.9%
2+ hours late17 flights6.3%

Scale runs 0% to 100%.

Share of 268 completed flights by arrival against schedule.

Time lost at the gate mostly stays lost. Of 96 departures that left 15 minutes late or more, only 8 made it up before arrival. In the other direction, 17 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 5798

The latest arrival of the period was on 18 July 2026, 12 hours 44 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on four of the five worst days.

The latest arrivals of YX 5798 in the period
Date	Arrived late by	Largest filed cause
18 July 2026	12 hours 44 minutes	National Airspace System
6 September 2025	5 hours 39 minutes	National Airspace System
19 May 2026	4 hours 20 minutes	National Airspace System
6 July 2026	4 hours 6 minutes	Carrier
24 September 2025	3 hours 11 minutes	National Airspace System

Delay causes

Why YX 5798 runs late

National Airspace System accounts for 59% of the 8,283 delay minutes carriers reported here, and the remaining four split what is left.

National Airspace System
59%
Late-arriving aircraft
22%
Carrier
19%
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 4,921 minutes out of 8,283, against a national NAS share of 21%. The split is drawn from 8,283 delay minutes reported on YX 5798.

Cancellations run at 6.29%, against 1.89% nationally. That is about 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

18.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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: 6.29% 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures