Flight number record

YX 3437

Republic Airways · Newark to Detroit

Route: EWR → DTW
Departs: 16:00
Flights: 293
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 3437, 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 3437 lands a B−, 6 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That is a workable record, not a spotless one. That rests on 293 flights, with a median arrival 13 minutes early.

Set against the rest of the country, YX 3437's record is 6 points better than the US average of 77.6%. That gap is worth roughly 56 fewer late arrivals for every thousand flights.

On time

83.2%

Arrivals under 15 minutes late, of 279 completed flights

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

4.44%

National rate is 1.81%

1 hour+ late

5.7%

National rate is 8.1%

These figures cover 293 flights between July 2025 and June 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.

Schedule

When YX 3437 flies

YX 3437 flies EWR to DTW without a single fixed slot. Its most common scheduled departure was 16:00, used on 77 of 293 flights, with 16:16 (38 flights) and 14:47 (35 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 16:0077 flights26.3%
Departs 16:1638 flights13.0%
Departs 14:4735 flights11.9%

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 16:00 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and YX 3437 runs 11 points better at 83.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

YX 3437 next to EWR to DTW

Every carrier on EWR to DTW combined arrived on time 79.2% of the time across 3,782 flights, so YX 3437 is 4 points ahead of it. Republic flew 1,510 flights on the same city pair under all its flight numbers, including this one, and those ran 83.3% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 5 points.

YX 3437 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 3437thin sample	293	83.2%	69 min	4.44%	B−
All Republic Airways on EWR–DTW	1,510	83.3%	72 min	5.30%	B−
All carriers on EWR–DTW	3,782	79.2%	86 min	4.84%	B−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 3437 quarter by quarter

YX 3437 did not run the same all year. Its best quarter was Apr–Jun 2026 at 93.6% on time and its weakest Jul–Sep 2025 at 75.3%, a swing of 18 points on roughly 73 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 202578 flights75.3%
Oct–Dec 202588 flights78.6%
Jan–Mar 202646 flights86.4%
Apr–Jun 202681 flights93.6%

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, YX 3437 ranged from 78.3% on Friday to 88.6% on Tuesday. With about 42 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why YX 3437 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 3,242 reported delay minutes.

Carrier
36%
National Airspace System
29%
Late-arriving aircraft
22%
Extreme weather
13%

Extreme weather accounts for 13% 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 2.1 times the usual weather exposure. The split is drawn from 3,242 delay minutes reported on YX 3437.

Cancellations run at 4.44%, against 1.81% nationally. That is roughly 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

5.7% 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 a little over an hour, which a normal layover absorbs.

The same number turns up on eleven other city pairs in the data, including EWR to MSY (37), BNA to EWR (8) and CLE to IAD (7), but none flew often enough under YX 3437 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to EWR to DTW only.

One caution: this is a thin sample. 293 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 3437

For a booking, the cancellation rate is the figure to plan around on YX 3437: 4.44% of its 293 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures