Flight number record

YX 4535

Republic Airways · Oklahoma City to New York

Route: OKC → LGA
Departs: 06:05
Flights: 284
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s YX 4535, 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 4535 earns an A−. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 284 flights, with a median arrival 13 minutes early.

Set against the rest of the country, YX 4535's record is 8 points better than the US average of 77.3%. That gap is worth roughly 83 fewer late arrivals for every thousand flights.

On time

85.6%

Arrivals under 15 minutes late, of 263 completed flights

Avg delay

95 min

Across delayed arrivals only, not all flights

Cancelled

6.69%

National rate is 1.89%

1 hour+ late

6.1%

National rate is 8.3%

These figures cover 284 flights between September 2025 and August 2026. The median arrival is 13 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.

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Schedule

When YX 4535 flies

YX 4535 flies OKC to LGA without a single fixed slot. Its most common scheduled departure was 06:05, used on 74 of 284 flights, with 06:00 (35 flights) and 06:04 (33 flights) next.

Departs 06:0574 flights26.1%
Departs 06:0035 flights12.3%
Departs 06:0433 flights11.6%

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 06:05 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and YX 4535 runs 4 points worse at 85.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

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Against the route

YX 4535 next to OKC to LGA

Every carrier on OKC to LGA combined arrived on time 79.4% of the time across 743 flights, so YX 4535 is 6 points ahead of it. Republic flew 634 flights on the same city pair under all its flight numbers, including this one, and those ran 78.1% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 8 points.

YX 4535 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 4535thin sample	284	85.6%	95 min	6.69%	A−
All Republic Airways on OKC–LGA	634	78.1%	110 min	5.84%	B−
All carriers on OKC–LGA	743	79.4%	105 min	4.98%	B−
Republic Airways, whole network	364,452	78.1%	74 min	4.55%	B−

Across the year

YX 4535 quarter by quarter

YX 4535 did not run the same all year. Its best quarter was Jul–Sep 2026 at 91.1% on time and its weakest Jan–Mar 2026 at 78.6%, a swing of 13 points on roughly 71 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 202526 flights—
Oct–Dec 202581 flights83.1%
Jan–Mar 202664 flights78.6%
Apr–Jun 202662 flights88.1%
Jul–Sep 202651 flights91.1%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, YX 4535 did best on Wednesday at 93.5% on time and worst on Tuesday at 77.6%. Each day rests on about 41 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late YX 4535 runs when it is late

YX 4535 often beats the schedule: 125 of 263 completed flights, 48%, arrived 15 minutes or more early. The 38 late arrivals split 13 under half an hour, 9 between 30 and 60 minutes, and 16 an hour or more.

15+ min early125 flights47.5%
Within 15 min100 flights38.0%
15–29 min late13 flights4.9%
30–59 min late9 flights3.4%
1–2 hours late5 flights1.9%
2+ hours late11 flights4.2%

Scale runs 0% to 100%.

Share of 263 completed flights by arrival against schedule.

5 of 33 late departures made up the time and arrived on time, 15% of them. 10 flights left on time and still arrived late.

The worst days

Worst days for YX 4535

The latest arrival of the period was on 9 September 2025, 7 hours 18 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across September, April, August, January and June, with no single month standing out.

The latest arrivals of YX 4535 in the period
Date	Arrived late by	Largest filed cause
9 September 2025	7 hours 18 minutes	Late-arriving aircraft
2 April 2026	7 hours 6 minutes	Extreme weather
11 August 2026	5 hours 39 minutes	Carrier
12 January 2026	3 hours 40 minutes	Carrier
29 June 2026	3 hours 32 minutes	Late-arriving aircraft

Delay causes

Why YX 4535 runs late

Carrier accounts for 42% of the 3,605 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
42%
Late-arriving aircraft
28%
National Airspace System
19%
Extreme weather
11%

Extreme weather accounts for 11% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 1.9 times the usual weather exposure. The split is drawn from 3,605 delay minutes reported on YX 4535.

Cancellations run at 6.69%, 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

6.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last an hour and a half, which a normal layover absorbs.

The 1,341 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.

The same number turns up on three other city pairs in the data, including MSP to ORD (7), DCA to BOS (1) and BOS to DCA (1), but none flew often enough under YX 4535 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to OKC to LGA only.

One caution: this is a thin sample. 284 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 4535

For a booking, the cancellation rate is the figure to plan around on YX 4535: 6.69% of its 284 scheduled flights did not operate. A late arrival costs an hour and a half, 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