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DelayAtlas

Route reliability record

LAX→JFK

Los Angeles to New York

Flights
10,289
Period
September 2025 to August 2026
Distance
2,475 mi
Carriers
4
BGRADE

This route lands a B, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 10,289 LAX to JFK flights, of which Delta Air Lines flew 3,367 at 79.4% on time.

Best time to fly LAX to JFK: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 86.3% of the time and Tuesday flights 80.5%, against 77.5% for the route overall.

Delta Air Lines is the most reliable of the three carriers covered here at 79.4% on time across 3,367 flights.

Key figures

On time

77.5%

Arrivals under 15 minutes late, of 9,911 completed flights

Avg delay

90 min

Across delayed arrivals only, not all flights

Cancelled

2.90%

National rate is 1.89%

Best carrier

Delta

79.4% on time across 3,367 flights

These figures cover 10,000 flights between September 2025 and August 2026. Beyond the headline rate, 9.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Carrier by carrier

Which airline is most reliable on LAX to JFK

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
AirlineFlightsOn timeAvg delayCancelledGrade
Frontier Airlinesthin sample14081.2%56 min0.71%B+
Delta Air Lines3,36779.4%87 min2.61%B
JetBlue Airways3,47977.9%70 min3.48%B−
American Airlines3,30374.9%112 min2.66%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.

Flight by flight

Flights on LAX to JFK

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.

Best ways to make this trip

The most reliable ways to fly Los Angeles to New York

Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 4 of the top 5 use a different airport at one end.

Most reliable ways to fly from LAX to JFK
OptionAirlineSuccessOn timeCancelledBest departureMost punctual flight
1. LAX → EWRLos Angeles to NewarkAlaska Airlines90.1%91.6%1.63%5am–8am, Tue—
2. SNA → EWRSanta Ana to NewarkUnited Airlines77.6%79.3%2.11%5am–8am, SatUA 2186 21:14
3. LAX → JFKLos Angeles to New YorkDelta Air Lines77.3%79.4%2.61%5am–8am, WedDL 934 06:00
4. LAX → EWRLos Angeles to NewarkUnited Airlines76.3%77.7%1.76%5am–8am, TueUA 2743 07:00
5. LAX → EWRLos Angeles to NewarkJetBlue Airways75.6%78.4%3.54%5am–8am, Fri—

Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.

Plan this trip by month, day and time

Departure window

The best time of day to leave

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 17 points, against 5 points between the best and worst carrier.

  • 5am–8am1,941 flights86.3%
  • 8am–11am2,032 flights76.4%
  • 11am–2pm2,174 flights69.2%
  • 2pm–5pm1,419 flights75.2%
  • 5pm–8pm2 flights—
  • 8pm–5am2,721 flights79.8%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

The weak window here is the middle of the day, not the evening: 11am–2pm runs 69.2% on time against 86.3% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8pm–5am window is the busiest, with 2,721 flights scheduled in it.

Explore

Filter LAX to JFK by airline, time, month and day

Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.

On LAX to JFK, the best departure window is 5am–8am at 86.3% on time and the worst is 11am–2pm at 69.2%, a wide gap of 17.1 points. All US flights leaving 5am–8am ran 89.3%.

  • 5–8am86.3%
  • 8–11am76.4%
  • 11am–2pm69.2%
  • 2–5pm75.2%
  • 5–8pm—
  • 8pm–5am79.8%

best all US flightsScale 60% to 95%. Cells under 30 flights show a dash.

Across the year

When delays peak on this route

This route's year swings by 20 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.

On-time rate by calendar month75J74F73M86A84M76J69J67A84S83O80N78D
Darker means more delays. Figures are on-time percentages.April best, August worst

August is the worst month at 66.5% on time, 20 points below April, the best at 86.1%. 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. July was the busiest month here, with 919 flights.

Across the week, Tuesday is the strongest day at 80.5% on time and Sunday the weakest at 73.2%, a spread of 7 points.

On-time rate by day of the week75.7Mon80.5Tue78.7Wed77.4Thu79.1Fri77.9Sat73.2Sun
Monday: 75.7 percent on time. Tuesday: 80.5 percent on time. Wednesday: 78.7 percent on time. Thursday: 77.4 percent on time. Friday: 79.1 percent on time. Saturday: 77.9 percent on time. Sunday: 73.2 percent on time

Delay causes

Why this route gets delayed

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 201,000 reported delay minutes.

  • Carrier
    40%
  • Late-arriving aircraft
    36%
  • National Airspace System
    24%
  • Extreme weather
    0%
  • Security
    0%

36% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 201,000 reported delay minutes here, that single category outweighs weather by 36 to one. The split is drawn from 200,814 reported delay minutes.

The largest share of delay minutes, 40%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 79,000 of the 201,000 delay minutes reported here.

Cancellations run at 2.90%, against 1.89% nationally. That is roughly one flight in 30 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 actually costs

9.2% 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 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 runs 75.4% on time across 10,285 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.

The sample behind these figures is 10,289 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.

Work out the risk of missing a connection in JFK after this flight

What to do with this

Booking this route

Put together: the delay figures matter less here than the 2.90% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 9,911 completed flights over 12 months sit behind that.

Common questions

LAX to JFK questions

How often is LAX to JFK delayed?

Roughly one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 22.5% of the 10,289 flights in this analysis, against 22.7% nationally. Delayed flights are late by an hour and a half on average.

Which airline is most reliable on LAX to JFK?

Delta Air Lines leads at 79.4% on time across 3,367 flights. American Airlines is at the other end on 74.9%, a gap of 5 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.

What time of day has the fewest delays on LAX to JFK?

The 5am–8am departure window is the strongest at 86.3% on time. The 11am–2pm window is the weakest at 69.2%, 17 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.

How bad are August delays on LAX to JFK?

August is the weakest month at 66.5% on time, compared with 86.1% in April. Across the year that is 20 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.

Related

Where to go next

Direction matters. LAX to JFK and JFK to LAX are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.

Embed LAX to JFK’s on-time badge on your site

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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.