Flight number record

YX 3591

Republic Airways · Burlington to Newark

Route: BTV → EWR
Departs: 10:35
Flights: 330
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 3591, 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 3591 lands a B, 5 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 about an hour on average. That is a workable record, not a spotless one. That rests on 330 flights, with a median arrival 16 minutes early.

Set against the rest of the country, YX 3591's record is 5 points better than the US average of 77.6%. That gap is worth roughly 48 fewer late arrivals for every thousand flights.

On time

82.4%

Arrivals under 15 minutes late, of 324 completed flights

Avg delay

67 min

Across delayed arrivals only, not all flights

Cancelled

1.21%

National rate is 1.81%

1 hour+ late

7.4%

National rate is 8.1%

These figures cover 330 flights between July 2025 and June 2026. The median arrival is 16 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 3591 flies

YX 3591 flies BTV to EWR without a single fixed slot. Its most common scheduled departure was 10:35, used on 84 of 330 flights, with 10:37 (49 flights) and 11:13 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:3584 flights25.5%
Departs 10:3749 flights14.8%
Departs 11:1336 flights10.9%

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 10:35 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and YX 3591 runs level with that at 82.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

YX 3591 next to BTV to EWR

Every carrier on BTV to EWR combined arrived on time 79.8% of the time across 639 flights, so YX 3591 is 3 points ahead of it. Republic flew 608 flights on the same city pair under all its flight numbers, including this one, and those ran 79.7% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 4 points.

YX 3591 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 3591thin sample	330	82.4%	67 min	1.21%	B
All Republic Airways on BTV–EWR	608	79.7%	98 min	3.45%	B−
All carriers on BTV–EWR	639	79.8%	95 min	3.76%	B−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 3591 quarter by quarter

YX 3591 did not run the same all year. Its best quarter was Jan–Mar 2026 at 95.5% on time and its weakest Jul–Sep 2025 at 72.2%, a swing of 23 points on roughly 83 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 202591 flights72.2%
Oct–Dec 202585 flights78.6%
Jan–Mar 202670 flights95.5%
Apr–Jun 202684 flights86.9%

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

By weekday, YX 3591 did best on Thursday at 86.0% on time and worst on Friday at 72.9%. Each day rests on about 47 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 3591 runs late

One category carries most of the weight here. National Airspace System accounts for 47% of the 3,835 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
47%
Carrier
26%
Late-arriving aircraft
26%
Extreme weather
0%

47% 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 1,820 minutes out of 3,835, against a national NAS share of 21%. The split is drawn from 3,835 delay minutes reported on YX 3591.

Cancellations sit at 1.21% against a national 1.81%, which is ordinary. Diversions add another 0.61%.

Connections and routes

What a delay on this flight costs

7.4% 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 about an hour, which a normal layover absorbs.

The same number turns up on six other city pairs in the data, including EWR to PIT (41), EWR to DTW (32) and LGA to IAD (5), but none flew often enough under YX 3591 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BTV to EWR only.

One caution: this is a thin sample. 330 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 3591

For a booking, read YX 3591 as 82.4% on time with 1.21% cancelled over 330 flights. Those are rates from the past twelve months, not a forecast for any particular day.

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