Flight number record
YX 5808
Republic Airways · Boston to New York
- Route
- BOS → JFK
- Departs
- 13:35
- Flights
- 348
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5808, 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 5808 sits in the middle of the pack with a C−. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.3%. The late ones land roughly 55 minutes behind schedule. That rests on 348 flights, with a median arrival 2 minutes early.
Key figures
On time
73.8%
Arrivals under 15 minutes late, of 328 completed flights
Avg delay
53 min
Across delayed arrivals only, not all flights
Cancelled
5.75%
National rate is 1.89%
1 hour+ late
8.2%
National rate is 8.3%
These figures cover 348 flights between September 2025 and August 2026. Beyond the headline rate, 8.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When YX 5808 flies
YX 5808 flies BOS to JFK without a single fixed slot. Its most common scheduled departure was 13:35, used on 53 of 348 flights, with 13:10 (40 flights) and 13:00 (36 flights) next.
- Departs 13:3553 flights15.2%
- Departs 13:1040 flights11.5%
- Departs 13:0036 flights10.3%
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 13:35 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and YX 5808 runs 5 points worse at 73.8%. 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 5808 next to BOS to JFK
Every carrier on BOS to JFK combined arrived on time 74.2% of the time across 5,614 flights, so YX 5808 is about level with it. Republic flew 2,857 flights on the same city pair under all its flight numbers, including this one, and those ran 74.6% on time. Across its whole network Republic Airways managed 78.1%, which this flight trails by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5808thin sample | 348 | 73.8% | 53 min | 5.75% | C− |
| All Republic Airways on BOS–JFK | 2,857 | 74.6% | 64 min | 5.99% | C− |
| All carriers on BOS–JFK | 5,614 | 74.2% | 71 min | 5.58% | C− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 5808 quarter by quarter
YX 5808 did not run the same all year. Its best quarter was Jul–Sep 2025 at 80.0% on time and its weakest Jul–Sep 2026 at 58.5%, a swing of 22 points on roughly 70 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 flights80.0%
- Oct–Dec 202579 flights78.2%
- Jan–Mar 202686 flights79.5%
- Apr–Jun 202691 flights71.9%
- Jul–Sep 202662 flights58.5%
Scale runs 50% to 85%.
By weekday, YX 5808 did best on Tuesday at 80.4% on time and worst on Sunday at 65.9%. Each day rests on about 50 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 5808 runs when it is late
YX 5808 often beats the schedule: 82 of 328 completed flights, 25%, arrived 15 minutes or more early. The 86 late arrivals split 29 under half an hour, 30 between 30 and 60 minutes, and 27 an hour or more.
- 15+ min early82 flights25.0%
- Within 15 min160 flights48.8%
- 15–29 min late29 flights8.8%
- 30–59 min late30 flights9.1%
- 1–2 hours late23 flights7.0%
- 2+ hours late4 flights1.2%
Scale runs 0% to 100%.
Share of 328 completed flights by arrival against schedule.
13 of 65 late departures made up the time and arrived on time, 20% of them. In the other direction, 34 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 JFK.
The worst days
Worst days for YX 5808
The latest arrival of the period was on 14 August 2026, 4 hours 56 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 14 August 2026 | 4 hours 56 minutes | National Airspace System |
| 19 December 2025 | 2 hours 38 minutes | National Airspace System |
| 24 May 2026 | 2 hours 30 minutes | Carrier |
| 13 October 2025 | 2 hours 12 minutes | National Airspace System |
| 14 December 2025 | 1 hour 57 minutes | National Airspace System |
Delay causes
Why YX 5808 runs late
National Airspace System accounts for 60% of the 4,529 delay minutes carriers reported here, and the remaining four split what is left.
- 60%National Airspace System
- 31%Carrier
- 9%Late-arriving aircraft
- 0%Extreme weather
60% 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 2,711 minutes out of 4,529, against a national NAS share of 21%. The split is drawn from 4,529 delay minutes reported on YX 5808.
Cancellations run at 5.75%, 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
8.2% 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 roughly 55 minutes, which a normal layover absorbs.
The same number turns up on one other city pair in the data, including CHS to BOS (16), but none flew often enough under YX 5808 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to JFK only.
One caution: this is a thin sample. 348 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 5808
For a booking, the cancellation rate is the figure to plan around on YX 5808: 5.75% of its 348 scheduled flights did not operate. A late arrival costs roughly 55 minutes, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- BOS to JFK, every carrier and departure
- JFK to BOS, the return direction
- Republic Airways 5720 on the same route85.1%
- JetBlue Airways 717 on the same route60.3%
- Delta Air Lines 2611 on the same route92.3%
- JetBlue Airways 1017 on the same route64.9%
- JetBlue Airways 517 on the same route66.0%
- Republic Airways 5814 on the same route63.2%
- Boston Logan International (BOS) delay statistics
- John F. Kennedy International (JFK) 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
- What a cancellation rate actually tells you (and what it hides)
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.