Flight number record
YX 5672
Republic Airways · Boston to Washington
- Route
- BOS → DCA
- Departs
- 11:55
- Flights
- 260
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 lands a B, 6 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 260 flights, with a median arrival 10 minutes early.
Set against the rest of the country, YX 5672's record is 6 points better than the US average of 77.3%. That gap is worth roughly 58 fewer late arrivals for every thousand flights.
Key figures
On time
83.1%
Arrivals under 15 minutes late, of 255 completed flights
Avg delay
57 min
Across delayed arrivals only, not all flights
Cancelled
1.92%
National rate is 1.89%
1 hour+ late
5.9%
National rate is 8.3%
These figures cover 260 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 5672 flies
YX 5672 flies BOS to DCA without a single fixed slot. Its most common scheduled departure was 11:55, used on 76 of 260 flights, with 10:55 (39 flights) and 11:05 (30 flights) next.
- Departs 11:5576 flights29.2%
- Departs 10:5539 flights15.0%
- Departs 11:0530 flights11.5%
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 11:55 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and YX 5672 runs 5 points better at 83.1%. 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 5672 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 5672 is 11 points ahead of 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 beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5672thin sample | 260 | 83.1% | 57 min | 1.92% | B |
| 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 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 65 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 flights86.7%
- Oct–Dec 202578 flights84.6%
- Jan–Mar 202686 flights70.4%
- Apr–Jun 202662 flights95.2%
- Jul–Sep 20264 flights—
Scale runs 60% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, YX 5672 did best on Monday at 88.9% on time and worst on Wednesday at 76.3%. Each day rests on about 37 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 5672 runs when it is late
YX 5672 often beats the schedule: 103 of 255 completed flights, 40%, arrived 15 minutes or more early. The 43 late arrivals split 20 under half an hour, 8 between 30 and 60 minutes, and 15 an hour or more.
- 15+ min early103 flights40.4%
- Within 15 min109 flights42.7%
- 15–29 min late20 flights7.8%
- 30–59 min late8 flights3.1%
- 1–2 hours late11 flights4.3%
- 2+ hours late4 flights1.6%
Scale runs 0% to 100%.
Share of 255 completed flights by arrival against schedule.
5 of 32 late departures made up the time and arrived on time, 16% of them. In the other direction, 16 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 5672
The latest arrival of the period was on 16 March 2026, 3 hours 43 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across March, September, February and January, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 March 2026 | 3 hours 43 minutes | Carrier |
| 7 September 2025 | 2 hours 48 minutes | Carrier |
| 7 February 2026 | 2 hours 25 minutes | National Airspace System |
| 25 February 2026 | 2 hours 23 minutes | Extreme weather |
| 19 January 2026 | 1 hour 57 minutes | Late-arriving aircraft |
Delay causes
Why YX 5672 runs late
Carrier accounts for 45% of the 2,447 delay minutes carriers reported here, and the remaining four split what is left.
- 45%Carrier
- 32%National Airspace System
- 13%Late-arriving aircraft
- 9%Extreme weather
The largest share of delay minutes, 45%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,104 of the 2,447 delay minutes reported here. The split is drawn from 2,447 delay minutes reported on YX 5672.
Cancellations sit at 1.92% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
5.9% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The same number turns up on five other city pairs in the data, including DCA to BOS (86), JFK to ORF (29) and MEM to DTW (11), 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. 260 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 83.1% on time with 1.92% cancelled over 260 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- BOS to DCA, every carrier and departure
- DCA to BOS, the return direction
- JetBlue Airways 2355 on the same route65.4%
- Republic Airways 5692 on the same route88.9%
- Republic Airways 5693 on the same route85.1%
- Republic Airways 5689 on the same route68.6%
- JetBlue Airways 2255 on the same route59.4%
- JetBlue Airways 1955 on the same route53.4%
- Boston Logan International (BOS) delay statistics
- Ronald Reagan Washington National (DCA) delay statistics
- Republic Airways on-time record
- Every Republic Airways flight number with a record
- The most and least reliable flight numbers in the US
- The best time of day to fly, according to 7.05 million flight records
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 ; recomputed monthly. How this data is collected.