Flight number record

UA 570

United Airlines · Boston to Newark

Route: BOS → EWR
Departs: 07:05
Flights: 288
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s UA 570, check with United Airlines.

UA 570 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 288 flights, with a median arrival 13 minutes early.

Set against the rest of the country, UA 570's record is 12 points better than the US average of 77.6%. That gap is worth roughly 118 fewer late arrivals for every thousand flights.

On time

89.4%

Arrivals under 15 minutes late, of 284 completed flights

Avg delay

86 min

Across delayed arrivals only, not all flights

Cancelled

1.39%

National rate is 1.81%

1 hour+ late

2.8%

National rate is 8.1%

These figures cover 288 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 UA 570 flies

UA 570 flies BOS to EWR without a single fixed slot. Its most common scheduled departure was 07:05, used on 75 of 288 flights, with 07:00 (68 flights) and 08:00 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:0575 flights26.0%
Departs 07:0068 flights23.6%
Departs 08:0036 flights12.5%

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 07:05 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and UA 570 runs level with that at 89.4%. 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

UA 570 next to BOS to EWR

Every carrier on BOS to EWR combined arrived on time 74.9% of the time across 3,906 flights, so UA 570 is 15 points ahead of it. United flew 2,719 flights on the same city pair under all its flight numbers, including this one, and those ran 75.5% on time. Across its whole network United Airlines managed 79.0%, which this flight beats by 10 points.

UA 570 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
UA 570thin sample	288	89.4%	86 min	1.39%	A
All United Airlines on BOS–EWR	2,719	75.5%	84 min	3.46%	B−
All carriers on BOS–EWR	3,906	74.9%	79 min	4.33%	C−
United Airlines, whole network	821,041	79.0%	72 min	1.01%	B

Across the year

UA 570 quarter by quarter

Quarter by quarter UA 570 held fairly steady: 87.0% in Jul–Sep 2025, 89.1% in Oct–Dec 2025, 88.0% in Jan–Mar 2026 and 93.1% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights87.0%
Oct–Dec 202555 flights89.1%
Jan–Mar 202653 flights88.0%
Apr–Jun 202688 flights93.1%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, UA 570 did best on Tuesday at 95.1% on time and worst on Saturday at 73.7%. Each day rests on about 41 flights, so a gap of 21 points is worth noticing but could still narrow in another year.

Delay causes

Why UA 570 runs late

One category carries most of the weight here. Carrier accounts for 63% of the 2,580 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.

Carrier
63%
National Airspace System
33%
Late-arriving aircraft
4%

The largest share of delay minutes, 63%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 1,637 of the 2,580 delay minutes reported here. The split is drawn from 2,580 delay minutes reported on UA 570.

Cancellations sit at 1.39% against a national 1.81%, 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 8.1% 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 same number turns up on five other city pairs in the data, including EWR to SAV (76), ATL to ORD (37) and ORD to MSY (37), but none flew often enough under UA 570 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to EWR only.

One caution: this is a thin sample. 288 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 UA 570

For a booking, UA 570 has one of the better records a US domestic flight can show: 89.4% on time and 1.39% cancelled. That is a base rate, not a promise about any single day.

Where to go next

A flight number here means United Airlines’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