Flight number record
YX 3642
Republic Airways · Memphis to Newark
- Route
- MEM → EWR
- Departs
- 06:00
- Flights
- 252
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 3642, 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 3642 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 252 flights, with a median arrival 19 minutes early.
Set against the rest of the country, YX 3642's record is 16 points better than the US average of 77.3%. That gap is worth roughly 158 fewer late arrivals for every thousand flights.
Key figures
On time
93.1%
Arrivals under 15 minutes late, of 246 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
2.38%
National rate is 1.89%
1 hour+ late
2.8%
National rate is 8.3%
These figures cover 252 flights between September 2025 and August 2026. The median arrival is 19 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 3642 flies
YX 3642 flies MEM to EWR without a single fixed slot. Its most common scheduled departure was 06:00, used on 199 of 252 flights.
- Departs 06:00199 flights79.0%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and YX 3642 runs 4 points better at 93.1%. 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 3642 next to MEM to EWR
Every carrier on MEM to EWR combined arrived on time 80.9% of the time across 486 flights, so YX 3642 is 12 points ahead of it. Republic flew 483 flights on the same city pair under all its flight numbers, including this one, and those ran 81.0% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 3642thin sample | 252 | 93.1% | 75 min | 2.38% | A |
| All Republic Airways on MEM–EWR | 483 | 81.0% | 73 min | 4.97% | B− |
| All carriers on MEM–EWR | 486 | 80.9% | 73 min | 4.94% | B− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 3642 quarter by quarter
YX 3642 did not run the same all year. Its best quarter was Apr–Jun 2026 at 98.8% on time and its weakest Jul–Sep 2026 at 86.4%, a swing of 12 points on roughly 84 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 202527 flights—
- Oct–Dec 202578 flights89.6%
- Apr–Jun 202685 flights98.8%
- Jul–Sep 202662 flights86.4%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, YX 3642 ranged from 87.1% on Saturday to 97.1% on Thursday. With about 36 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.
Arrival by arrival
How late YX 3642 runs when it is late
YX 3642 often beats the schedule: 171 of 246 completed flights, 70%, arrived 15 minutes or more early. The 17 late arrivals split 6 under half an hour, 4 between 30 and 60 minutes, and 7 an hour or more.
- 15+ min early171 flights69.5%
- Within 15 min58 flights23.6%
- 15–29 min late6 flights2.4%
- 30–59 min late4 flights1.6%
- 1–2 hours late3 flights1.2%
- 2+ hours late4 flights1.6%
Scale runs 0% to 100%.
Share of 246 completed flights by arrival against schedule.
Only 11 of 246 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for YX 3642
The latest arrival of the period was on 14 December 2025, 4 hours 36 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 December 2025 | 4 hours 36 minutes | National Airspace System |
| 15 October 2025 | 3 hours 5 minutes | Carrier |
| 4 October 2025 | 2 hours 24 minutes | Carrier |
| 11 August 2026 | 2 hours 8 minutes | National Airspace System |
| 24 April 2026 | 1 hour 35 minutes | Carrier |
Delay causes
Why YX 3642 runs late
National Airspace System accounts for 56% of the 1,272 delay minutes carriers reported here, and the remaining four split what is left.
- 56%National Airspace System
- 44%Carrier
The largest share of delay minutes, 44%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 555 of the 1,272 delay minutes reported here. The split is drawn from 1,272 delay minutes reported on YX 3642.
Cancellations sit at 2.38% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.8% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 946 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 eight other city pairs in the data, including ORD to CMH (56), EWR to ILM (16) and IND to EWR (16), but none flew often enough under YX 3642 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MEM to EWR only.
One caution: this is a thin sample. 252 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 3642
For a booking, read YX 3642 as 93.1% on time with 2.38% cancelled over 252 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- Memphis International (MEM) delay statistics
- Newark Liberty International (EWR) 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
- Worst months to fly in the US, ranked by the data
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.