Flight number record

YX 5687

Republic Airways · Washington to Boston

Route: DCA → BOS
Departs: 08:40
Flights: 275
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5687, 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 5687 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 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 275 flights, with a median arrival 13 minutes early.

Set against the rest of the country, YX 5687's record is 9 points better than the US average of 77.6%. That gap is worth roughly 93 fewer late arrivals for every thousand flights.

On time

86.9%

Arrivals under 15 minutes late, of 275 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

5.8%

National rate is 8.1%

These figures cover 275 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 5687 flies

YX 5687 flies DCA to BOS without a single fixed slot. Its most common scheduled departure was 08:40, used on 65 of 275 flights, with 08:29 (49 flights) and 08:30 (38 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:4065 flights23.6%
Departs 08:2949 flights17.8%
Departs 08:3038 flights13.8%

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 08:40 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and YX 5687 runs 3 points better at 86.9%. 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 5687 next to DCA to BOS

Every carrier on DCA to BOS combined arrived on time 71.4% of the time across 9,081 flights, so YX 5687 is 16 points ahead of it. Republic flew 3,983 flights on the same city pair under all its flight numbers, including this one, and those ran 77.9% on time. Across its whole network Republic Airways managed 78.5%, which this flight beats by 8 points.

YX 5687 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5687thin sample	275	86.9%	72 min	0.00%	A+
All Republic Airways on DCA–BOS	3,983	77.9%	70 min	4.22%	B−
All carriers on DCA–BOS	9,081	71.4%	80 min	3.88%	C−
Republic Airways, whole network	361,482	78.5%	72 min	4.08%	B−

Across the year

YX 5687 quarter by quarter

Quarter by quarter YX 5687 held fairly steady: 85.0% in Jul–Sep 2025, 84.8% in Oct–Dec 2025 and 89.8% in Apr–Jun 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202580 flights85.0%
Oct–Dec 202579 flights84.8%
Jan–Mar 202628 flights—
Apr–Jun 202688 flights89.8%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5687 ranged from 81.0% on Thursday to 90.7% on Monday. With about 39 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 5687 runs late

One category carries most of the weight here. Carrier accounts for 69% of the 2,596 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
69%
National Airspace System
25%
Late-arriving aircraft
7%
Extreme weather
0%

The largest share of delay minutes, 69%, 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 1,779 of the 2,596 delay minutes reported here. The split is drawn from 2,596 delay minutes reported on YX 5687.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

5.8% 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 four other city pairs in the data, including BOS to DCA (127), DTW to SDF (4) and BOS to SAV (1), but none flew often enough under YX 5687 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DCA to BOS only.

One caution: this is a thin sample. 275 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 5687

For a booking, YX 5687 has one of the better records a US domestic flight can show: 86.9% on time and 0.00% cancelled. That is a base rate, not a promise about any single 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