Flight number record

YX 5689

Republic Airways · Boston to Washington

Route: BOS → DCA
Departs: 15:55
Flights: 303
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 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 sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 303 flights, with a median arrival right on schedule.

The national on-time rate over the same period is 77.3%, so YX 5689 runs 9 points behind the country as a whole. Across a thousand flights that is about 87 extra late arrivals.

On time

68.6%

Arrivals under 15 minutes late, of 283 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

5.94%

National rate is 1.89%

1 hour+ late

13.1%

National rate is 8.3%

These figures cover 303 flights between September 2025 and August 2026. Beyond the headline rate, 13.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Schedule

When YX 5689 flies

YX 5689 flies BOS to DCA without a single fixed slot. Its most common scheduled departure was 15:55, used on 84 of 303 flights, with 15:45 (73 flights) and 15:10 (54 flights) next.

Departs 15:5584 flights27.7%
Departs 15:4573 flights24.1%
Departs 15:1054 flights17.8%

Scale runs 0% to 100%.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 15:55 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and YX 5689 runs 3 points worse at 68.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

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Against the route

YX 5689 next to BOS to DCA

Every carrier on BOS to DCA combined arrived on time 72.6% of the time across 9,105 flights, so YX 5689 is 4 points behind it. Republic flew 3,999 flights on the same city pair under all its flight numbers, including this one, and those ran 75.1% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 10 points.

YX 5689 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 5689thin sample	303	68.6%	63 min	5.94%	C−
All Republic Airways on BOS–DCA	3,999	75.1%	62 min	3.90%	B−
All carriers on BOS–DCA	9,105	72.6%	72 min	4.11%	C−
Republic Airways, whole network	364,452	78.1%	74 min	4.55%	B−

Across the year

YX 5689 quarter by quarter

YX 5689 did not run the same all year. Its best quarter was Jul–Sep 2026 at 75.0% on time and its weakest Oct–Dec 2025 at 63.5%, a swing of 12 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 202526 flights—
Oct–Dec 202564 flights63.5%
Jan–Mar 202674 flights71.2%
Apr–Jun 202686 flights68.2%
Jul–Sep 202653 flights75.0%

Scale runs 55% to 80%. Rows with fewer than 30 flights show a dash.

By weekday, YX 5689 did best on Tuesday at 78.3% on time and worst on Sunday at 59.6%. Each day rests on about 43 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late YX 5689 runs when it is late

The 89 late arrivals split 27 under half an hour, 25 between 30 and 60 minutes, and 37 an hour or more.

15+ min early60 flights21.2%
Within 15 min134 flights47.3%
15–29 min late27 flights9.5%
30–59 min late25 flights8.8%
1–2 hours late30 flights10.6%
2+ hours late7 flights2.5%

Scale runs 0% to 100%.

Share of 283 completed flights by arrival against schedule.

11 of 78 late departures made up the time and arrived on time, 14% of them. In the other direction, 22 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DCA.

The worst days

Worst days for YX 5689

The latest arrival of the period was on 22 June 2026, 6 hours 51 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.

The latest arrivals of YX 5689 in the period
Date	Arrived late by	Largest filed cause
22 June 2026	6 hours 51 minutes	National Airspace System
20 May 2026	6 hours 35 minutes	National Airspace System
13 October 2025	2 hours 15 minutes	Late-arriving aircraft
11 June 2026	2 hours 15 minutes	National Airspace System
24 February 2026	2 hours 9 minutes	Extreme weather

Delay causes

Why YX 5689 runs late

National Airspace System accounts for 50% of the 5,606 delay minutes carriers reported here, and the remaining four split what is left.

National Airspace System
50%
Late-arriving aircraft
27%
Carrier
22%
Extreme weather
1%

50% 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 2,809 minutes out of 5,606, against a national NAS share of 21%. The split is drawn from 5,606 delay minutes reported on YX 5689.

Cancellations run at 5.94%, against 1.89% nationally. That is roughly one flight in fifteen 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

13.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.

The same number turns up on three other city pairs in the data, including DCA to BOS (151), JFK to DCA (16) and CVG to BOS (1), 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: 5.94% 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, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures