Flight number record
YX 5749
Republic Airways · New York to Washington
- Route
- LGA → DCA
- Departs
- 11:30
- Flights
- 346
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s YX 5749, 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 5749 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 about an hour behind schedule. That rests on 346 flights, with a median arrival 3 minutes early.
Key figures
On time
73.8%
Arrivals under 15 minutes late, of 332 completed flights
Avg delay
59 min
Across delayed arrivals only, not all flights
Cancelled
4.05%
National rate is 1.89%
1 hour+ late
6.0%
National rate is 8.3%
These figures cover 346 flights between September 2025 and August 2026. The median arrival is 3 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 5749 flies
YX 5749 flies LGA to DCA without a single fixed slot. Its most common scheduled departure was 11:30, used on 119 of 346 flights, with 11:00 (95 flights) and 11:20 (74 flights) next.
- Departs 11:30119 flights34.4%
- Departs 11:0095 flights27.5%
- Departs 11:2074 flights21.4%
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 11:30 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and YX 5749 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 5749 next to LGA to DCA
Every carrier on LGA to DCA combined arrived on time 65.5% of the time across 4,840 flights, so YX 5749 is 8 points ahead of it. Republic flew 4,699 flights on the same city pair under all its flight numbers, including this one, and those ran 65.7% 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 5749thin sample | 346 | 73.8% | 59 min | 4.05% | C− |
| All Republic Airways on LGA–DCA | 4,699 | 65.7% | 61 min | 5.83% | C− |
| All carriers on LGA–DCA | 4,840 | 65.5% | 62 min | 5.76% | C− |
| Republic Airways, whole network | 364,452 | 78.1% | 74 min | 4.55% | B− |
Across the year
YX 5749 quarter by quarter
YX 5749 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 58.6%, a swing of 31 points on roughly 69 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 202579 flights72.7%
- Jan–Mar 202686 flights76.3%
- Apr–Jun 202691 flights76.9%
- Jul–Sep 202660 flights58.6%
Scale runs 50% to 95%.
By weekday, YX 5749 did best on Saturday at 87.2% on time and worst on Friday at 66.0%. Each day rests on about 49 flights, so a gap of 21 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late YX 5749 runs when it is late
YX 5749 often beats the schedule: 95 of 332 completed flights, 29%, arrived 15 minutes or more early. Most of the lateness is short. 46 of the 87 late arrivals were under half an hour behind, and 20 reached an hour or more.
- 15+ min early95 flights28.6%
- Within 15 min150 flights45.2%
- 15–29 min late46 flights13.9%
- 30–59 min late21 flights6.3%
- 1–2 hours late7 flights2.1%
- 2+ hours late13 flights3.9%
Scale runs 0% to 100%.
Share of 332 completed flights by arrival against schedule.
7 of 49 late departures made up the time and arrived on time, 14% of them. In the other direction, 45 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 5749
The latest arrival of the period was on 30 October 2025, 6 hours 23 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 30 October 2025 | 6 hours 23 minutes | Late-arriving aircraft |
| 12 March 2026 | 5 hours 42 minutes | Carrier |
| 3 August 2026 | 4 hours 47 minutes | National Airspace System |
| 5 April 2026 | 4 hours 9 minutes | Late-arriving aircraft |
| 14 December 2025 | 3 hours 42 minutes | Late-arriving aircraft |
Delay causes
Why YX 5749 runs late
National Airspace System accounts for 45% of the 5,127 delay minutes carriers reported here, and the remaining four split what is left.
- 45%National Airspace System
- 30%Late-arriving aircraft
- 25%Carrier
45% 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 2,304 minutes out of 5,127, against a national NAS share of 21%. The split is drawn from 5,127 delay minutes reported on YX 5749.
Cancellations run at 4.05%, 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
6.0% 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 two other city pairs in the data, including DCA to LGA (31) and CHS to JFK (16), but none flew often enough under YX 5749 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LGA to DCA only.
One caution: this is a thin sample. 346 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 5749
For a booking, the cancellation rate is the figure to plan around on YX 5749: 4.05% of its 346 scheduled flights did not operate. A late arrival costs about an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- LGA to DCA, every carrier and departure
- DCA to LGA, the return direction
- Republic Airways 5709 on the same route59.5%
- Republic Airways 5717 on the same route60.1%
- Republic Airways 5770 on the same route87.6%
- Republic Airways 5742 on the same route82.8%
- LaGuardia (LGA) 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
- 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.