Flight number record

YX 4671

Republic Airways · New York to Washington

Route: JFK → DCA
Departs: 09:00
Flights: 251
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 4671, 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 4671 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 about 50 minutes behind schedule. That rests on 251 flights, with a median arrival 2 minutes early.

The national on-time rate over the same period is 77.6%, so YX 4671 runs 9 points behind the country as a whole. Across a thousand flights that is about 86 extra late arrivals.

On time

69.0%

Arrivals under 15 minutes late, of 242 completed flights

Avg delay

50 min

Across delayed arrivals only, not all flights

Cancelled

3.19%

National rate is 1.81%

1 hour+ late

7.0%

National rate is 8.1%

These figures cover 251 flights between July 2025 and June 2026. The median arrival is 2 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.

Schedule

When YX 4671 flies

YX 4671 flies JFK to DCA without a single fixed slot. Its most common scheduled departure was 09:00, used on 60 of 251 flights, with 15:30 (58 flights) and 09:23 (34 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:0060 flights23.9%
Departs 15:3058 flights23.1%
Departs 09:2334 flights13.5%

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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and YX 4671 runs 15 points worse at 69.0%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

YX 4671 next to JFK to DCA

Every carrier on JFK to DCA combined arrived on time 67.8% of the time across 2,528 flights, so YX 4671 is about level with it. Republic flew 2,082 flights on the same city pair under all its flight numbers, including this one, and those ran 70.7% on time. Across its whole network Republic Airways managed 78.5%, which this flight trails by 10 points.

YX 4671 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 4671thin sample	251	69.0%	50 min	3.19%	C−
All Republic Airways on JFK–DCA	2,082	70.7%	67 min	5.38%	C−
All carriers on JFK–DCA	2,528	67.8%	71 min	5.34%	C−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 4671 quarter by quarter

YX 4671 did not run the same all year. Its best quarter was Jul–Sep 2025 at 91.3% on time and its weakest Oct–Dec 2025 at 39.6%, a swing of 52 points on roughly 63 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 flights91.3%
Oct–Dec 202557 flights39.6%
Jan–Mar 202661 flights55.4%
Apr–Jun 202641 flights75.6%

Scale runs 30% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, YX 4671 did best on Saturday at 88.6% on time and worst on Thursday at 50.0%. Each day rests on about 36 flights, so a gap of 39 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 4671 runs late

One category carries most of the weight here. National Airspace System accounts for 50% of the 3,726 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
50%
Late-arriving aircraft
37%
Carrier
13%

37% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,726 reported delay minutes here, that single category outweighs weather by 37 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,726 delay minutes reported on YX 4671.

Cancellations run at 3.19%, against 1.81% 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

7.0% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 50 minutes, which a normal layover absorbs.

The same number turns up on six other city pairs in the data, including IND to DCA (38), ORD to ROC (27) and ROC to ORD (27), but none flew often enough under YX 4671 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to JFK to DCA only.

One caution: this is a thin sample. 251 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 4671

For a booking, the cancellation rate is the figure to plan around on YX 4671: 3.19% of its 251 scheduled flights did not operate. A late arrival costs about 50 minutes, 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