Flight number record

YX 5689

Republic Airways · Boston to Washington

Route: BOS → DCA
Departs: 15:10
Flights: 303
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s YX 5689, 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 5689 draws a C−. About one flight in three arrives at least 15 minutes late, and the typical late arrival is about an hour behind schedule. Build slack into anything you connect to. That rests on 303 flights, with a median arrival 3 minutes late.

The national on-time rate over the same period is 77.6%, so YX 5689 runs 12 points behind the country as a whole. Across a thousand flights that is about 124 extra late arrivals.

On time

65.2%

Arrivals under 15 minutes late, of 290 completed flights

Avg delay

67 min

Across delayed arrivals only, not all flights

Cancelled

3.96%

National rate is 1.81%

1 hour+ late

13.8%

National rate is 8.1%

These figures cover 303 flights between July 2025 and June 2026. Beyond the headline rate, 13.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When YX 5689 flies

YX 5689 flies BOS to DCA without a single fixed slot. Its most common scheduled departure was 15:10, used on 107 of 303 flights, with 15:55 (84 flights) and 15:40 (31 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:10107 flights35.3%
Departs 15:5584 flights27.7%
Departs 15:4031 flights10.2%

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 15:10 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and YX 5689 runs 7 points worse at 65.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

YX 5689 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 5689 is 9 points behind 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 trails by 13 points.

YX 5689 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5689thin sample	303	65.2%	67 min	3.96%	C−
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 5689 quarter by quarter

YX 5689 did not run the same all year. Its best quarter was Jan–Mar 2026 at 71.2% on time and its weakest Jul–Sep 2025 at 57.9%, a swing of 13 points on roughly 76 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 202579 flights57.9%
Oct–Dec 202564 flights63.5%
Jan–Mar 202674 flights71.2%
Apr–Jun 202686 flights68.2%

Scale runs 50% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5689 did best on Tuesday at 74.0% on time and worst on Sunday at 50.0%. Each day rests on about 43 flights, so a gap of 24 points is worth noticing but could still narrow in another year.

Delay causes

Why YX 5689 runs late

One category carries most of the weight here. National Airspace System accounts for 61% of the 6,768 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
61%
Late-arriving aircraft
20%
Carrier
17%
Extreme weather
1%

61% 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 4,144 minutes out of 6,768, against a national NAS share of 21%. The split is drawn from 6,768 delay minutes reported on YX 5689.

Cancellations run at 3.96%, against 1.81% nationally. That is about one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.8% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

The same number turns up on two other city pairs in the data, including DCA to BOS (98) and JFK to DCA (16), but none flew often enough under YX 5689 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. 303 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 5689

For a booking, the cancellation rate is the figure to plan around on YX 5689: 3.96% of its 303 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.

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