Flight number record
YX 5684
Republic Airways · Cleveland to Boston
- Route
- CLE → BOS
- Departs
- 06:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5684, 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 5684 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 365 flights, with a median arrival 18 minutes early.
Set against the rest of the country, YX 5684's record is 14 points better than the US average of 77.3%. That gap is worth roughly 135 fewer late arrivals for every thousand flights.
Key figures
On time
90.8%
Arrivals under 15 minutes late, of 359 completed flights
Avg delay
83 min
Across delayed arrivals only, not all flights
Cancelled
1.64%
National rate is 1.89%
1 hour+ late
3.9%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 18 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 5684 flies
YX 5684 flies CLE to BOS without a single fixed slot. Its most common scheduled departure was 06:00, used on 190 of 365 flights, with 06:05 (57 flights) and 06:10 (40 flights) next.
- Departs 06:00190 flights52.1%
- Departs 06:0557 flights15.6%
- Departs 06:1040 flights11.0%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and YX 5684 runs level with that at 90.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
YX 5684 next to CLE to BOS
Every carrier on CLE to BOS combined arrived on time 77.7% of the time across 1,620 flights, so YX 5684 is 13 points ahead of it. Republic flew 881 flights on the same city pair under all its flight numbers, including this one, and those ran 82.7% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5684 | 365 | 90.8% | 83 min | 1.64% | A |
| All Republic Airways on CLE–BOS | 881 | 82.7% | 75 min | 2.72% | B |
| All carriers on CLE–BOS | 1,620 | 77.7% | 75 min | 3.09% | B− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 5684 quarter by quarter
Quarter by quarter YX 5684 held fairly steady: 88.0% in Oct–Dec 2025, 87.1% in Jan–Mar 2026, 96.7% in Apr–Jun 2026 and 88.7% in Jul–Sep 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights—
- Oct–Dec 202592 flights88.0%
- Jan–Mar 202690 flights87.1%
- Apr–Jun 202691 flights96.7%
- Jul–Sep 202662 flights88.7%
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, YX 5684 ranged from 84.3% on Monday to 94.2% on Wednesday. With about 52 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.
Arrival by arrival
How late YX 5684 runs when it is late
YX 5684 often beats the schedule: 220 of 359 completed flights, 61%, arrived 15 minutes or more early. The 33 late arrivals split 9 under half an hour, 10 between 30 and 60 minutes, and 14 an hour or more.
- 15+ min early220 flights61.3%
- Within 15 min106 flights29.5%
- 15–29 min late9 flights2.5%
- 30–59 min late10 flights2.8%
- 1–2 hours late10 flights2.8%
- 2+ hours late4 flights1.1%
Scale runs 0% to 100%.
Share of 359 completed flights by arrival against schedule.
8 of 27 late departures made up the time and arrived on time, 30% of them. 14 flights left on time and still arrived late.
The worst days
Worst days for YX 5684
The latest arrival of the period was on 18 March 2026, 8 hours 6 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 March 2026 | 8 hours 6 minutes | Carrier |
| 4 August 2026 | 7 hours 26 minutes | Carrier |
| 15 December 2025 | 3 hours 45 minutes | Carrier |
| 22 December 2025 | 2 hours 7 minutes | Carrier |
| 28 February 2026 | 1 hour 59 minutes | Carrier |
Delay causes
Why YX 5684 runs late
Carrier accounts for 77% of the 2,722 delay minutes carriers reported here, and the remaining four split what is left.
- 77%Carrier
- 18%National Airspace System
- 3%Late-arriving aircraft
- 2%Extreme weather
The largest share of delay minutes, 77%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,085 of the 2,722 delay minutes reported here. The split is drawn from 2,722 delay minutes reported on YX 5684.
Cancellations sit at 1.64% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.9% 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 563 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.
Every one of the 365 flights under YX 5684 in the data flew CLE to BOS. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 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 5684
For a booking, read YX 5684 as 90.8% on time with 1.64% cancelled over 365 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- CLE to BOS, every carrier and departure
- BOS to CLE, the return direction
- Republic Airways 5641 on the same route69.3%
- Cleveland Hopkins International (CLE) delay statistics
- Boston Logan International (BOS) 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
- Worst months to fly in the US, ranked by the data
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.