Flight number record

YX 4686

Republic Airways · Washington to Nashville

Route: DCA → BNA
Departs: 11:34
Flights: 315
Period: September 2025 to August 2026

Historical statistics for September 2025 to August 2026, not live status. For today’s YX 4686, 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 4686 earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 50 minutes. That rests on 315 flights, with a median arrival 10 minutes early.

Set against the rest of the country, YX 4686's record is 7 points better than the US average of 77.3%. That gap is worth roughly 67 fewer late arrivals for every thousand flights.

On time

84.0%

Arrivals under 15 minutes late, of 306 completed flights

Avg delay

50 min

Across delayed arrivals only, not all flights

Cancelled

2.86%

National rate is 1.89%

1 hour+ late

3.6%

National rate is 8.3%

These figures cover 315 flights between September 2025 and August 2026. The median arrival is 10 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.

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Schedule

When YX 4686 flies

YX 4686 flies DCA to BNA without a single fixed slot. Its most common scheduled departure was 11:34, used on 54 of 315 flights, with 11:56 (44 flights) and 10:59 (36 flights) next.

Departs 11:3454 flights17.1%
Departs 11:5644 flights14.0%
Departs 10:5936 flights11.4%

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 11:34 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and YX 4686 runs 6 points better at 84.0%. 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 4686 next to DCA to BNA

Every carrier on DCA to BNA combined arrived on time 75.7% of the time across 4,384 flights, so YX 4686 is 8 points ahead of it. Republic flew 1,845 flights on the same city pair under all its flight numbers, including this one, and those ran 81.8% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 6 points.

YX 4686 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
YX 4686thin sample	315	84.0%	50 min	2.86%	B
All Republic Airways on DCA–BNA	1,845	81.8%	64 min	2.44%	B
All carriers on DCA–BNA	4,384	75.7%	65 min	3.06%	B−
Republic Airways, whole network	364,452	78.1%	74 min	4.55%	B−

Across the year

YX 4686 quarter by quarter

YX 4686 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Oct–Dec 2025 at 76.9%, a swing of 20 points on roughly 79 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 202530 flights96.7%
Oct–Dec 202591 flights76.9%
Jan–Mar 202690 flights83.7%
Apr–Jun 202679 flights87.0%
Jul–Sep 202625 flights—

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, YX 4686 did best on Monday at 95.6% on time and worst on Sunday at 76.2%. Each day rests on about 45 flights, so a gap of 19 points is worth noticing but could still narrow in another year.

Arrival by arrival

How late YX 4686 runs when it is late

YX 4686 often beats the schedule: 112 of 306 completed flights, 37%, arrived 15 minutes or more early. The 49 late arrivals split 23 under half an hour, 15 between 30 and 60 minutes, and 11 an hour or more.

15+ min early112 flights36.6%
Within 15 min145 flights47.4%
15–29 min late23 flights7.5%
30–59 min late15 flights4.9%
1–2 hours late7 flights2.3%
2+ hours late4 flights1.3%

Scale runs 0% to 100%.

Share of 306 completed flights by arrival against schedule.

13 of 56 late departures made up the time and arrived on time, 23% of them. Only 6 left on time and still arrived late.

The worst days

Worst days for YX 4686

The latest arrival of the period was on 5 December 2025, 3 hours 41 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across December, February, March and April, with no single month standing out.

The latest arrivals of YX 4686 in the period
Date	Arrived late by	Largest filed cause
5 December 2025	3 hours 41 minutes	Extreme weather
21 February 2026	2 hours 55 minutes	Carrier
16 March 2026	2 hours 54 minutes	National Airspace System
19 April 2026	2 hours 12 minutes	Late-arriving aircraft
17 March 2026	1 hour 48 minutes	Carrier

Delay causes

Why YX 4686 runs late

Late-arriving aircraft accounts for 43% of the 2,433 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
43%
National Airspace System
23%
Carrier
22%
Extreme weather
12%

Extreme weather accounts for 12% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.0 times the usual weather exposure. The split is drawn from 2,433 delay minutes reported on YX 4686.

Cancellations run at 2.86%, against 1.89% nationally. That is roughly one flight in 30 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

Badly late arrivals are rare here: only 3.6% land an hour or more behind schedule, against 8.3% 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 562 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.

The same number turns up on three other city pairs in the data, including BNA to DCA (5), HHH to DCA (4) and DCA to HHH (4), but none flew often enough under YX 4686 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DCA to BNA only.

One caution: this is a thin sample. 315 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 4686

For a booking, the cancellation rate is the figure to plan around on YX 4686: 2.86% of its 315 scheduled flights did not operate. A late arrival costs about 50 minutes, 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