Flight number record

YX 5709

Republic Airways · New York to Washington

Route: LGA → DCA
Departs: 14:45
Flights: 349
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5709, 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 5709 draws a D−. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 349 flights, with a median arrival 4 minutes late.

The national on-time rate over the same period is 77.6%, so YX 5709 runs 16 points behind the country as a whole. Across a thousand flights that is about 161 extra late arrivals.

On time

61.5%

Arrivals under 15 minutes late, of 335 completed flights

Avg delay

61 min

Across delayed arrivals only, not all flights

Cancelled

4.01%

National rate is 1.81%

1 hour+ late

11.9%

National rate is 8.1%

These figures cover 349 flights between July 2025 and June 2026. Beyond the headline rate, 11.9% 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 5709 flies

YX 5709 flies LGA to DCA without a single fixed slot. Its most common scheduled departure was 14:45, used on 138 of 349 flights, with 14:50 (113 flights) and 14:35 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 14:45138 flights39.5%
Departs 14:50113 flights32.4%
Departs 14:3535 flights10.0%

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 14:45 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and YX 5709 runs 11 points worse at 61.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

YX 5709 next to LGA to DCA

Every carrier on LGA to DCA combined arrived on time 68.3% of the time across 4,830 flights, so YX 5709 is 7 points behind it. Republic flew 4,751 flights on the same city pair under all its flight numbers, including this one, and those ran 68.4% on time. Across its whole network Republic Airways managed 78.5%, which this flight trails by 17 points.

YX 5709 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5709thin sample	349	61.5%	61 min	4.01%	D−
All Republic Airways on LGA–DCA	4,751	68.4%	62 min	5.51%	C−
All carriers on LGA–DCA	4,830	68.3%	62 min	5.45%	C−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 5709 quarter by quarter

YX 5709 did not run the same all year. Its best quarter was Jul–Sep 2025 at 70.8% on time and its weakest Oct–Dec 2025 at 50.0%, a swing of 21 points on roughly 87 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 flights70.8%
Oct–Dec 202579 flights50.0%
Jan–Mar 202687 flights56.4%
Apr–Jun 202691 flights66.7%

Scale runs 40% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5709 did best on Saturday at 91.8% on time and worst on Friday at 52.1%. Each day rests on about 50 flights, so a gap of 40 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 5709 runs late

One category carries most of the weight here. National Airspace System accounts for 68% of the 7,805 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
68%
Late-arriving aircraft
18%
Carrier
13%
Extreme weather
0%

68% 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 5,317 minutes out of 7,805, against a national NAS share of 21%. The split is drawn from 7,805 delay minutes reported on YX 5709.

Cancellations run at 4.01%, against 1.81% nationally. That is about one flight in 25 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. 11.9% 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 349 flights under YX 5709 in the data flew LGA to DCA. 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. 349 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 5709

For a booking, the cancellation rate is the figure to plan around on YX 5709: 4.01% of its 349 scheduled flights did not operate. A late arrival costs about 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