Carrier route record
F9LGA→ATL
Frontier Airlines · New York to Atlanta
- Flights
- 949
- Period
- September 2025 to August 2026
- Share of route
- 11%
- Carriers
- 6
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Frontier Airlines.
Frontier on LGA to ATL carries a cancellation problem, not just a delay problem: 7.7% of scheduled flights never operate, against 1.9% nationally. Of the ones that do fly, close to half of flights arrive on time, worth an F− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 949 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 4,935 at 79.1% on time.
Delta Air Lines is the most reliable of the three carriers covered here at 79.1% on time across 4,935 flights.
Key figures
On time
54.0%
Arrivals under 15 minutes late, of 873 completed flights
Avg delay
111 min
Across delayed arrivals only, not all flights
Cancelled
7.69%
National rate is 1.89%
Whole route
75.5%
Every carrier on LGA to ATL, 8,500 flights
These figures cover 949 flights between September 2025 and August 2026. Beyond the headline rate, 25.3% 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 LGA to ATL
Frontier flew 949 of the 8,500 flights on LGA to ATL, about 11% of it. Its 54.0% on time is 22 points worse than the route as a whole, which runs 75.5%. Ranked by on-time rate it is last of six carriers on the route, where the range runs from American at 100.0% to Frontier at 54.0%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
The three carriers here are closely matched: 4 points separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlinesthin sample | 6 | 100.0% | — | 0.00% | A+ |
| Spirit Airlinesthin sample | 4 | 100.0% | — | 0.00% | A+ |
| Delta Air Lines | 4,935 | 79.1% | 73 min | 3.55% | B− |
| Republic Airways | 1,906 | 76.4% | 66 min | 5.25% | B− |
| Southwest Airlines | 700 | 75.1% | 74 min | 3.29% | B− |
| Frontier Airlines (this page) | 949 | 54.0% | 111 min | 7.69% | F− |
Republic Airways cancels 5.3% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Flight by flight
Frontier flight numbers on LGA to ATL
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 matters more here than the choice of carrier. The gap between the best and worst window is 23 points, against 4 points between the best and worst carrier.
- 5am–8am365 flights60.8%
- 8am–11am—
- 11am–2pm121 flights64.4%
- 2pm–5pm7 flights—
- 5pm–8pm218 flights41.1%
- 8pm–5am238 flights48.1%
Scale runs 35% to 70%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 41.1% on time, against 64.4% for the 11am–2pm slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 365 flights scheduled in it.
Across the year
Frontier on LGA to ATL through the year
July is the worst month at 34.3% on time, 31 points below September, the best at 65.0%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. May was the busiest month here, with 93 flights.
Across the week, Thursday is the strongest day at 62.1% on time and Monday the weakest at 48.3%, a spread of 14 points.
Arrival by arrival
How late Frontier on LGA to ATL runs when it is late
When Frontier on LGA to ATL is late it tends to be very late: 221 of its 402 late arrivals were an hour or more behind, and 113 were two hours or more.
- 15+ min early184 flights21.1%
- Within 15 min287 flights32.9%
- 15–29 min late81 flights9.3%
- 30–59 min late100 flights11.5%
- 1–2 hours late108 flights12.4%
- 2+ hours late113 flights12.9%
Scale runs 0% to 100%.
Share of 873 completed flights by arrival against schedule.
68 of 377 late departures made up the time and arrived on time, 18% of them. In the other direction, 93 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 ATL.
The worst days
Worst days for Frontier on LGA to ATL
The latest arrival of the period was on 9 November 2025, 22 hours 26 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 9 November 2025 | 22 hours 26 minutes | Late-arriving aircraft |
| 2 August 2026 | 17 hours 44 minutes | National Airspace System |
| 30 October 2025 | 17 hours 35 minutes | Late-arriving aircraft |
| 17 August 2026 | 16 hours 20 minutes | Late-arriving aircraft |
| 9 March 2026 | 14 hours | Late-arriving aircraft |
Delay causes
Why Frontier runs late on this route
Late-arriving aircraft accounts for 56% of the 45,000 delay minutes carriers reported here, and the remaining four split what is left.
- 56%Late-arriving aircraft
- 26%Carrier
- 16%National Airspace System
- 2%Extreme weather
56% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 45,000 reported delay minutes here, that single category outweighs weather by 23 to one. The split is drawn from 44,635 reported delay minutes.
Cancellations run at 7.69%, against 1.89% nationally. That is roughly one flight in twelve 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
25.3% 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.
The 762 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
The return leg is a different operation and performs like one: it runs 46.2% on time across 950 flights, 8 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 8 points of difference.
One caution: this is a thin sample. 949 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 LGA to ATL
Put together: the delay figures matter less here than the 7.69% cancellation rate. A late arrival costs you close to two hours; a cancelled flight costs you the day. Book the 11am–2pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 873 completed flights over 12 months sit behind that.
Related
Where to go next
- LGA to ATL, every carrier
- Frontier on ATL to LGA, the return leg
- Delta Air Lines on LGA to ATL79.1%
- Republic Airways on LGA to ATL76.4%
- Southwest Airlines on LGA to ATL75.1%
- Frontier Airlines network-wide record
- LaGuardia (LGA) delay statistics
- Hartsfield-Jackson Atlanta International (ATL) 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.