Flight number record

YX 5672

Republic Airways · Boston to Washington

Route: BOS → DCA
Departs: 11:05
Flights: 312
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5672, 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 5672 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 77.6%. When something does go wrong the average delay runs about an hour. That rests on 312 flights, with a median arrival 11 minutes early.

Set against the rest of the country, YX 5672's record is 8 points better than the US average of 77.6%. That gap is worth roughly 81 fewer late arrivals for every thousand flights.

On time

85.7%

Arrivals under 15 minutes late, of 307 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

1.60%

National rate is 1.81%

1 hour+ late

4.9%

National rate is 8.1%

These figures cover 312 flights between July 2025 and June 2026. The median arrival is 11 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 5672 flies

YX 5672 flies BOS to DCA without a single fixed slot. Its most common scheduled departure was 11:05, used on 81 of 312 flights, with 11:55 (76 flights) and 10:55 (39 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:0581 flights26.0%
Departs 11:5576 flights24.4%
Departs 10:5539 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 11:05 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and YX 5672 runs 7 points better at 85.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

YX 5672 next to BOS to DCA

Every carrier on BOS to DCA combined arrived on time 74.0% of the time across 9,082 flights, so YX 5672 is 12 points ahead of it. Republic flew 3,985 flights on the same city pair under all its flight numbers, including this one, and those ran 75.6% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 7 points.

YX 5672 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5672thin sample	312	85.7%	56 min	1.60%	A
All Republic Airways on BOS–DCA	3,985	75.6%	62 min	4.22%	B−
All carriers on BOS–DCA	9,082	74.0%	72 min	3.88%	C−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 5672 quarter by quarter

YX 5672 did not run the same all year. Its best quarter was Apr–Jun 2026 at 95.2% on time and its weakest Jan–Mar 2026 at 70.4%, a swing of 25 points on roughly 78 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 202586 flights94.2%
Oct–Dec 202578 flights84.6%
Jan–Mar 202686 flights70.4%
Apr–Jun 202662 flights95.2%

Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5672 ranged from 79.5% on Sunday to 90.9% on Monday. With about 45 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why YX 5672 runs late

One category carries most of the weight here. Carrier accounts for 45% of the 2,479 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
45%
National Airspace System
33%
Late-arriving aircraft
13%
Extreme weather
9%

The largest share of delay minutes, 45%, 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 1,104 of the 2,479 delay minutes reported here. The split is drawn from 2,479 delay minutes reported on YX 5672.

Cancellations sit at 1.60% 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 4.9% 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 three other city pairs in the data, including DCA to BOS (86), MEM to DTW (11) and LGA to RIC (6), but none flew often enough under YX 5672 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to DCA only.

One caution: this is a thin sample. 312 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 5672

For a booking, read YX 5672 as 85.7% on time with 1.60% cancelled over 312 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