Flight number record
YX 5690
Republic Airways · Pittsburgh to Boston
- Route
- PIT → BOS
- Departs
- 06:09
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5690, 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 5690 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 15 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 365 flights, with a median arrival 16 minutes early.
Set against the rest of the country, YX 5690's record is 15 points better than the US average of 77.3%. That gap is worth roughly 146 fewer late arrivals for every thousand flights.
Key figures
On time
91.9%
Arrivals under 15 minutes late, of 359 completed flights
Avg delay
44 min
Across delayed arrivals only, not all flights
Cancelled
1.64%
National rate is 1.89%
1 hour+ late
2.2%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 16 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 5690 flies
YX 5690 flies PIT to BOS without a single fixed slot. Its most common scheduled departure was 06:09, used on 100 of 365 flights, with 06:06 (42 flights) next.
- Departs 06:09100 flights27.4%
- Departs 06:0642 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 06:09 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and YX 5690 runs 3 points better at 91.9%. 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 5690 next to PIT to BOS
Every carrier on PIT to BOS combined arrived on time 78.3% of the time across 2,162 flights, so YX 5690 is 14 points ahead of it. Republic flew 1,158 flights on the same city pair under all its flight numbers, including this one, and those ran 81.0% on time. Across its whole network Republic Airways managed 78.1%, which this flight beats by 14 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5690 | 365 | 91.9% | 44 min | 1.64% | A |
| All Republic Airways on PIT–BOS | 1,158 | 81.0% | 63 min | 3.11% | B− |
| All carriers on PIT–BOS | 2,162 | 78.3% | 73 min | 3.79% | B− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 5690 quarter by quarter
Quarter by quarter YX 5690 held fairly steady: 93.3% in Jul–Sep 2025, 89.1% in Oct–Dec 2025, 88.4% in Jan–Mar 2026, 97.8% in Apr–Jun 2026 and 91.7% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights93.3%
- Oct–Dec 202592 flights89.1%
- Jan–Mar 202690 flights88.4%
- Apr–Jun 202691 flights97.8%
- Jul–Sep 202662 flights91.7%
Scale runs 80% to 100%.
By weekday, YX 5690 ranged from 88.5% on Sunday to 94.2% on Thursday. With about 52 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late YX 5690 runs when it is late
YX 5690 often beats the schedule: 201 of 359 completed flights, 56%, arrived 15 minutes or more early. The 29 late arrivals split 14 under half an hour, 7 between 30 and 60 minutes, and 8 an hour or more. Not one arrived two hours late.
- 15+ min early201 flights56.0%
- Within 15 min129 flights35.9%
- 15–29 min late14 flights3.9%
- 30–59 min late7 flights1.9%
- 1–2 hours late8 flights2.2%
- 2+ hours late0 flights0.0%
Scale runs 0% to 100%.
Share of 359 completed flights by arrival against schedule.
Only 18 of 359 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for YX 5690
The latest arrival of the period was on 27 March 2026, 1 hour 46 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 March 2026 | 1 hour 46 minutes | Carrier |
| 17 December 2025 | 1 hour 34 minutes | Carrier |
| 21 May 2026 | 1 hour 24 minutes | Carrier |
| 19 July 2026 | 1 hour 22 minutes | Carrier |
| 14 December 2025 | 1 hour 21 minutes | National Airspace System |
Delay causes
Why YX 5690 runs late
Carrier accounts for 51% of the 1,268 delay minutes carriers reported here, and the remaining four split what is left.
- 51%Carrier
- 43%National Airspace System
- 6%Extreme weather
The largest share of delay minutes, 51%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 648 of the 1,268 delay minutes reported here. The split is drawn from 1,268 delay minutes reported on YX 5690.
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 2.2% 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.
Every one of the 365 flights under YX 5690 in the data flew PIT 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 5690
For a booking, read YX 5690 as 91.9% 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
- PIT to BOS, every carrier and departure
- BOS to PIT, the return direction
- JetBlue Airways 1286 on the same route82.1%
- JetBlue Airways 2186 on the same route75.5%
- Pittsburgh International (PIT) 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.