Carrier route record
F9RDU→LGA
Frontier Airlines · Raleigh to New York
- Flights
- 139
- Period
- September 2025 to August 2026
- Share of route
- 6%
- Carriers
- 4
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on RDU to LGA earns a D−, which is as low as this site's scale goes for a reason. Only 56.9% of flights arrive inside the 15-minute window, 20 points worse than the national rate of 77.3%. Late arrivals average about an hour. Treat any tight connection here as a coin flip. That rests on 139 flights, with a median arrival 9 minutes late.
The national on-time rate over the same period is 77.3%, so Frontier on RDU to LGA runs 20 points behind the country as a whole. Across a thousand flights that is about 204 extra late arrivals.
Key figures
On time
56.9%
Arrivals under 15 minutes late, of 130 completed flights
Avg delay
58 min
Across delayed arrivals only, not all flights
Cancelled
6.47%
National rate is 1.89%
Whole route
69.7%
Every carrier on RDU to LGA, 2,489 flights
These figures cover 139 flights between September 2025 and August 2026. Beyond the headline rate, 12.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Carrier by carrier
Frontier against every carrier on RDU to LGA
Frontier flew 139 of the 2,489 flights on RDU to LGA, about 6% of it. Its 56.9% on time is 13 points worse than the route as a whole, which runs 69.7%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from American at 84.1% to Frontier at 56.9%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlinesthin sample | 87 | 84.1% | 67 min | 5.75% | B− |
| Delta Air Linesthin sample | 344 | 72.7% | 95 min | 4.07% | C− |
| Republic Airways | 1,919 | 69.5% | 80 min | 6.57% | C− |
| Frontier Airlines (this page)thin sample | 139 | 56.9% | 58 min | 6.47% | D− |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When Frontier runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 139 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm—
- 2pm–5pm67 flights53.1%
- 5pm–8pm72 flights60.6%
- 8pm–5am—
Scale runs 45% to 65%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 60.6% on time. The full set of windows spans 8 points.
Across the year
Frontier on RDU to LGA through the year
- Jul–Sep 202530 flights—
- Oct–Dec 202567 flights49.2%
- Jan–Mar 202621 flights—
- Apr–Jun 202621 flights—
Scale runs 40% to 55%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 56.9% on time across 139 flights.
Split by quarter, Frontier on RDU to LGA logged 30 flights in Jul–Sep 2025, 67 flights in Oct–Dec 2025, 21 flights in Jan–Mar 2026 and 21 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 56.9% annual figure is the one to use.
Arrival by arrival
How late Frontier on RDU to LGA runs when it is late
The 56 late arrivals split 19 under half an hour, 21 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early16 flights12.3%
- Within 15 min58 flights44.6%
- 15–29 min late19 flights14.6%
- 30–59 min late21 flights16.2%
- 1–2 hours late9 flights6.9%
- 2+ hours late7 flights5.4%
Scale runs 0% to 100%.
Share of 130 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 41 departures that left 15 minutes late or more, only 3 made it up before arrival. In the other direction, 18 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 LGA.
The worst days
Worst days for Frontier on RDU to LGA
The latest arrival of the period was on 11 November 2025, 3 hours 35 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. Three of the five worst days fell in January 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 November 2025 | 3 hours 35 minutes | National Airspace System |
| 9 January 2026 | 3 hours 21 minutes | Carrier |
| 3 January 2026 | 2 hours 51 minutes | Late-arriving aircraft |
| 11 December 2025 | 2 hours 39 minutes | Late-arriving aircraft |
| 4 January 2026 | 2 hours 19 minutes | Late-arriving aircraft |
Delay causes
Why Frontier runs late on this route
National Airspace System accounts for 58% of the 3,251 delay minutes carriers reported here, and the remaining four split what is left.
- 58%National Airspace System
- 33%Late-arriving aircraft
- 9%Carrier
- 0%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 1,873 minutes out of 3,251, against a national NAS share of 21%. The split is drawn from 3,251 reported delay minutes.
Cancellations run at 6.47%, against 1.89% nationally. That is about 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 stage length
What a delay here costs
12.3% 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.
At 431 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5pm–8pm window matters as much as it does.
The return leg runs 54.6% on time across 139 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 139 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 Frontier on RDU to LGA
Put together: the delay figures matter less here than the 6.47% cancellation rate. A late arrival costs you about an hour; a cancelled flight costs you the day. Book the 5pm–8pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 130 completed flights over 12 months sit behind that.
Related
Where to go next
- RDU to LGA, every carrier
- Frontier on LGA to RDU, the return leg
- Delta Air Lines on RDU to LGA72.7%
- Republic Airways on RDU to LGA69.5%
- Frontier Airlines network-wide record
- Raleigh-Durham International (RDU) delay statistics
- LaGuardia (LGA) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.