Carrier route record
F9RDU→LGA
Frontier Airlines · Raleigh to New York
- Flights
- 201
- Period
- July 2025 to June 2026
- Share of route
- 7%
- Carriers
- 4
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on RDU to LGA draws a D−. Roughly one flight in three arrives at least 15 minutes late, and the typical late arrival is an hour and a half behind schedule. Build slack into anything you connect to. That rests on 201 flights, with a median arrival 6 minutes late.
The national on-time rate over the same period is 77.6%, so Frontier on RDU to LGA runs 17 points behind the country as a whole. Across a thousand flights that is about 166 extra late arrivals.
Key figures
On time
61.0%
Arrivals under 15 minutes late, of 187 completed flights
Avg delay
91 min
Across delayed arrivals only, not all flights
Cancelled
5.97%
National rate is 1.81%
Whole route
69.5%
Every carrier on RDU to LGA, 2,713 flights
These figures cover 201 flights between July 2025 and June 2026. Beyond the headline rate, 12.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
Frontier against every carrier on RDU to LGA
Frontier flew 201 of the 2,713 flights on RDU to LGA, about 7% of it. Its 61.0% on time is 9 points worse than the route as a whole, which runs 69.5%. Ranked by on-time rate it is last of four carriers on the route, where the range runs from American at 96.9% to Frontier at 61.0%. 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 | 34 | 96.9% | 17 min | 5.88% | A− |
| Delta Air Linesthin sample | 344 | 72.7% | 95 min | 4.07% | C− |
| Republic Airways | 2,134 | 69.3% | 83 min | 6.42% | C− |
| Frontier Airlines (this page)thin sample | 201 | 61.0% | 91 min | 5.97% | D− |
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 201 flights.
- 5am–8am—
- 8am–11am—
- 11am–2pm—
- 2pm–5pm129 flights61.2%
- 5pm–8pm72 flights60.6%
- 8pm–5am—
Scale runs 50% to 65%. Rows with fewer than 30 flights show a dash.
The 2pm–5pm window is the strongest at 61.2% on time. The full set of windows spans half a point.
Across the year
Frontier on RDU to LGA through the year
- Jul–Sep 202592 flights70.9%
- Oct–Dec 202567 flights49.2%
- Jan–Mar 202621 flights—
- Apr–Jun 202621 flights—
Scale runs 40% to 75%. 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 61.0% on time across 201 flights.
Split by quarter, Frontier on RDU to LGA logged 92 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 61.0% annual figure is the one to use.
Across the week, Thursday is the strongest day at 71.9% on time and Tuesday the weakest at 38.2%. 34 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Frontier runs late on this route
One category carries most of the weight here. National Airspace System accounts for 52% of the 6,643 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 52%National Airspace System
- 24%Late-arriving aircraft
- 24%Carrier
- 0%Extreme weather
52% 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 3,443 minutes out of 6,643, against a national NAS share of 21%. The split is drawn from 6,643 reported delay minutes.
Cancellations run at 5.97%, against 1.81% 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 stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.8% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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 2pm–5pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 55.4% on time across 201 flights, 6 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 6 points of difference.
One caution: this is a thin sample. 201 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 5.97% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 2pm–5pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 187 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 LGA69.3%
- Frontier Airlines network-wide record
- Raleigh-Durham International (RDU) delay statistics
- LaGuardia (LGA) delay statistics
- The US routes with the most cancellations
- How often a connection fails at the major US hubs
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.