Carrier route record

F9LAX→JFK

Frontier Airlines · Los Angeles to New York

Flights: 140
Period: September 2025 to August 2026
Share of route: 1%
Carriers: 4

Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Frontier Airlines.

Frontier on LAX to JFK lands a B+, 4 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 about an hour on average. That rests on 140 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 3,367 at 79.4% on time.

The US average over the same twelve months is 77.3%, so there is little to separate Frontier on LAX to JFK from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

81.2%

Arrivals under 15 minutes late, of 138 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

0.71%

National rate is 1.89%

Whole route

77.5%

Every carrier on LAX to JFK, 10,289 flights

These figures cover 140 flights between September 2025 and August 2026. The median arrival is 14 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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Carrier by carrier

Frontier against every carrier on LAX to JFK

Frontier flew 140 of the 10,289 flights on LAX to JFK, about 1% of it. Its 81.2% on time is 4 points better than the route as a whole, which runs 77.5%. Ranked by on-time rate it is first of four carriers on the route, where the range runs from Frontier at 81.2% to American at 74.9%.

The three carriers here are closely matched: 5 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.

On-time performance by carrier on LAX to JFK
Airline	Flights	On time	Avg delay	Cancelled	Grade
Frontier Airlines (this page)thin sample	140	81.2%	56 min	0.71%	B+
Delta Air Lines	3,367	79.4%	87 min	2.61%	B
JetBlue Airways	3,479	77.9%	70 min	3.48%	B−
American Airlines	3,303	74.9%	112 min	2.66%	C

JetBlue Airways cancels 3.5% 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.

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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 140 flights.

There are not enough flights in each departure window to split Frontier's LAX to JFK record by time of day without the percentages moving on noise. The headline rate of 81.2% is the reliable figure here.

Across the year

Frontier on LAX to JFK through the year

Jul–Sep 202530 flights76.7%
Oct–Dec 202592 flights82.4%
Jan–Mar 202618 flights—

Scale runs 70% to 90%. 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 81.2% on time across 140 flights.

Split by quarter, Frontier on LAX to JFK logged 30 flights in Jul–Sep 2025, 92 flights in Oct–Dec 2025 and 18 flights in Jan–Mar 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 81.2% annual figure is the one to use.

Arrival by arrival

How late Frontier on LAX to JFK runs when it is late

Frontier on LAX to JFK often beats the schedule: 68 of 138 completed flights, 49%, arrived 15 minutes or more early. The 26 late arrivals split 12 under half an hour, 4 between 30 and 60 minutes, and 10 an hour or more.

15+ min early68 flights49.3%
Within 15 min44 flights31.9%
15–29 min late12 flights8.7%
30–59 min late4 flights2.9%
1–2 hours late7 flights5.1%
2+ hours late3 flights2.2%

Scale runs 0% to 100%.

Share of 138 completed flights by arrival against schedule.

A late pushback is often recovered here: of 34 departures that left 15 minutes late or more, 11 still arrived on time. 3 flights left on time and still arrived late.

The worst days

Worst days for Frontier on LAX to JFK

The latest arrival of the period was on 29 September 2025, 2 hours 30 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.

The latest arrivals of Frontier on LAX to JFK in the period
Date	Arrived late by	Largest filed cause
29 September 2025	2 hours 30 minutes	Carrier
10 October 2025	2 hours 11 minutes	Late-arriving aircraft
18 September 2025	2 hours 3 minutes	Late-arriving aircraft
20 December 2025	1 hour 57 minutes	Carrier
9 October 2025	1 hour 51 minutes	Late-arriving aircraft

Delay causes

Why Frontier runs late on this route

Late-arriving aircraft accounts for 52% of the 1,460 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
52%
Carrier
43%
National Airspace System
5%

52% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 1,460 reported delay minutes here, that single category outweighs weather by 52 to one. The split is drawn from 1,460 reported delay minutes.

The largest share of delay minutes, 43%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 630 of the 1,460 delay minutes reported here.

Cancellations are rare at 0.71%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

7.2% 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.

At 2,475 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.

The return leg is a different operation and performs like one: it runs 70.8% on time across 141 flights, 10 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 10 points of difference.

One caution: this is a thin sample. 140 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 LAX to JFK

Put together: treat all of this as provisional. 140 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 81.2% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 138 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures