Flight number record
YX 5709
Republic Airways · New York to Washington
- Route
- LGA → DCA
- Departs
- 14:45
- Flights
- 348
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 two 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 348 flights, with a median arrival 6 minutes late.
The national on-time rate over the same period is 77.3%, so YX 5709 runs 18 points behind the country as a whole. Across a thousand flights that is about 178 extra late arrivals.
Key figures
On time
59.5%
Arrivals under 15 minutes late, of 328 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
5.75%
National rate is 1.89%
1 hour+ late
12.2%
National rate is 8.3%
These figures cover 348 flights between September 2025 and August 2026. Beyond the headline rate, 12.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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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 130 of 348 flights, with 14:50 (113 flights) and 14:40 (48 flights) next.
- Departs 14:45130 flights37.4%
- Departs 14:50113 flights32.5%
- Departs 14:4048 flights13.8%
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 14:45 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and YX 5709 runs 12 points worse at 59.5%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
YX 5709 next to LGA to DCA
Every carrier on LGA to DCA combined arrived on time 65.5% of the time across 4,840 flights, so YX 5709 is 6 points behind it. Republic flew 4,699 flights on the same city pair under all its flight numbers, including this one, and those ran 65.7% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 19 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5709thin sample | 348 | 59.5% | 63 min | 5.75% | D− |
| All Republic Airways on LGA–DCA | 4,699 | 65.7% | 61 min | 5.83% | C− |
| All carriers on LGA–DCA | 4,840 | 65.5% | 62 min | 5.76% | C− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | 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 76.7% on time and its weakest Oct–Dec 2025 at 50.0%, a swing of 27 points on roughly 70 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 flights76.7%
- Oct–Dec 202579 flights50.0%
- Jan–Mar 202687 flights56.4%
- Apr–Jun 202691 flights66.7%
- Jul–Sep 202661 flights55.8%
Scale runs 40% to 80%.
By weekday, YX 5709 did best on Saturday at 85.1% on time and worst on Friday at 48.9%. Each day rests on about 50 flights, so a gap of 36 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 5709 runs when it is late
The 133 late arrivals split 36 under half an hour, 57 between 30 and 60 minutes, and 40 an hour or more.
- 15+ min early63 flights19.2%
- Within 15 min132 flights40.2%
- 15–29 min late36 flights11.0%
- 30–59 min late57 flights17.4%
- 1–2 hours late29 flights8.8%
- 2+ hours late11 flights3.4%
Scale runs 0% to 100%.
Share of 328 completed flights by arrival against schedule.
11 of 72 late departures made up the time and arrived on time, 15% of them. In the other direction, 72 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 DCA.
The worst days
Worst days for YX 5709
The latest arrival of the period was on 10 August 2026, 15 hours 19 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as national airspace system delay.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 August 2026 | 15 hours 19 minutes | Carrier |
| 14 December 2025 | 4 hours 15 minutes | Late-arriving aircraft |
| 6 September 2025 | 3 hours 53 minutes | National Airspace System |
| 5 August 2026 | 3 hours 49 minutes | National Airspace System |
| 12 March 2026 | 3 hours 16 minutes | National Airspace System |
Delay causes
Why YX 5709 runs late
National Airspace System accounts for 56% of the 8,316 delay minutes carriers reported here, and the remaining four split what is left.
- 56%National Airspace System
- 25%Carrier
- 18%Late-arriving aircraft
- 0%Extreme weather
56% 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 4,689 minutes out of 8,316, against a national NAS share of 21%. The split is drawn from 8,316 delay minutes reported on YX 5709.
Cancellations run at 5.75%, against 1.89% 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
12.2% 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.
Every one of the 348 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. 348 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: 5.75% of its 348 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- LGA to DCA, every carrier and departure
- DCA to LGA, the return direction
- Republic Airways 5749 on the same route73.8%
- Republic Airways 5717 on the same route60.1%
- Republic Airways 5770 on the same route87.6%
- Republic Airways 5742 on the same route82.8%
- LaGuardia (LGA) delay statistics
- Ronald Reagan Washington National (DCA) delay statistics
- Republic Airways on-time record
- Every Republic Airways flight number with a record
- The most and least reliable flight numbers in the US
- What a cancellation rate actually tells you (and what it hides)
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 ; recomputed monthly. How this data is collected.