Flight number record
YX 5748
Republic Airways · Boston to New York
- Route
- BOS → LGA
- Departs
- 13:00
- Flights
- 271
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5748, 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 5748 lands a B−, 2 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 271 flights, with a median arrival 7 minutes early.
Key figures
On time
79.2%
Arrivals under 15 minutes late, of 260 completed flights
Avg delay
84 min
Across delayed arrivals only, not all flights
Cancelled
4.06%
National rate is 1.89%
1 hour+ late
10.8%
National rate is 8.3%
These figures cover 271 flights between September 2025 and August 2026. Beyond the headline rate, 10.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When YX 5748 flies
YX 5748 is scheduled to leave Boston (BOS) at 13:00 local time and reach New York (LGA) at 14:27. That slot held for 271 of the 271 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 13:00271 flights100.0%
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 13:00 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and YX 5748 runs level with that at 79.2%. 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 5748 next to BOS to LGA
Every carrier on BOS to LGA combined arrived on time 76.2% of the time across 7,442 flights, so YX 5748 is 3 points ahead of it. Republic flew 6,971 flights on the same city pair under all its flight numbers, including this one, and those ran 75.2% on time. Across its whole network Republic Airways managed 78.1%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| YX 5748thin sample | 271 | 79.2% | 84 min | 4.06% | B− |
| All Republic Airways on BOS–LGA | 6,971 | 75.2% | 77 min | 6.50% | B− |
| All carriers on BOS–LGA | 7,442 | 76.2% | 78 min | 6.40% | B− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 5748 quarter by quarter
YX 5748 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Jul–Sep 2026 at 72.5%, a swing of 18 points on roughly 54 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 flights90.0%
- Oct–Dec 202568 flights75.4%
- Jan–Mar 202642 flights84.2%
- Apr–Jun 202678 flights80.3%
- Jul–Sep 202653 flights72.5%
Scale runs 65% to 95%.
By weekday, YX 5748 did best on Wednesday at 90.9% on time and worst on Thursday at 64.3%. Each day rests on about 39 flights, so a gap of 27 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 5748 runs when it is late
YX 5748 often beats the schedule: 86 of 260 completed flights, 33%, arrived 15 minutes or more early. When YX 5748 is late it tends to be very late: 28 of its 54 late arrivals were an hour or more behind, and 11 were two hours or more.
- 15+ min early86 flights33.1%
- Within 15 min120 flights46.2%
- 15–29 min late10 flights3.8%
- 30–59 min late16 flights6.2%
- 1–2 hours late17 flights6.5%
- 2+ hours late11 flights4.2%
Scale runs 0% to 100%.
Share of 260 completed flights by arrival against schedule.
7 of 51 late departures made up the time and arrived on time, 14% of them. 10 flights left on time and still arrived late.
The worst days
Worst days for YX 5748
The latest arrival of the period was on 6 August 2026, 8 hours 10 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 6 August 2026 | 8 hours 10 minutes | National Airspace System |
| 14 December 2025 | 4 hours 27 minutes | National Airspace System |
| 2 December 2025 | 3 hours 12 minutes | Late-arriving aircraft |
| 1 September 2025 | 3 hours 8 minutes | Carrier |
| 10 November 2025 | 3 hours 5 minutes | National Airspace System |
Delay causes
Why YX 5748 runs late
National Airspace System accounts for 58% of the 4,544 delay minutes carriers reported here, and the remaining four split what is left.
- 58%National Airspace System
- 22%Carrier
- 18%Late-arriving aircraft
- 1%Extreme weather
58% 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 2,647 minutes out of 4,544, against a national NAS share of 21%. The split is drawn from 4,544 delay minutes reported on YX 5748.
Cancellations run at 4.06%, against 1.89% nationally. That is about one flight in 25 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
10.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The same number turns up on two other city pairs in the data, including DTW to CLE (3) and RDU to BOS (2), but none flew often enough under YX 5748 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BOS to LGA only.
One caution: this is a thin sample. 271 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 5748
For a booking, the cancellation rate is the figure to plan around on YX 5748: 4.06% of its 271 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- BOS to LGA, every carrier and departure
- LGA to BOS, the return direction
- Republic Airways 5721 on the same route67.1%
- Republic Airways 5736 on the same route73.5%
- Republic Airways 5716 on the same route61.4%
- Republic Airways 5744 on the same route85.8%
- Republic Airways 5831 on the same route62.2%
- Republic Airways 5730 on the same route77.1%
- Boston Logan International (BOS) delay statistics
- LaGuardia (LGA) 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
- How often a connection fails at the major US hubs
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.