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Route on-time record

PWM to JFK: most on-time flights and the best time to fly

Portland (Portland International Jetport) to New York (John F. Kennedy International Airport). 404 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 5.4% were cancelled. The most reliable flight number was JetBlue 307 at 7:20 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

Find me the most reliable flights fromtoonreturning(optional)

PWM → JFK

Portland to New York: 404 nonstop flights a year

On time (12 months)

80%

Cancelled

5.4%

avg delay 16 min

Best time to leave

Before 9 AM

91% on time vs 69% noon to 3 PM

Most reliable airline

JetBlue

76% chance on time

Check PWM to JFK fares

Lowest nonstop fare seen in the next two months: $173 (JetBlue 307 on 2026-10-27). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · JetBlue 307

    7:20 AM → 8:44 AM1h 22m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    88%

    chance on time

    On time (history)
    93%
    Cancelled
    5.0%
    Avg arrival delay
    6 min
    • Arrived on time 93% of the time (152 flights, Jun 2025 to May 2026).
    • Cancelled 5.0% of the time (8 of 160).
    • Leaves in this route's most on-time window (Before 9 AM: 91% on time; Noon to 3 PM: 69%).

    Moderate track record · 152 flights

    Find JetBlue 307 fares Opens this date on Aviasales

  2. #2 · JetBlue 407

    2:36 PM → 4:09 PM1h 33m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    64%

    chance on time

    On time (history)
    65%
    Cancelled
    5.3%
    Avg arrival delay
    29 min
    • Arrived on time 65% of the time (142 flights, Jun 2025 to May 2026).
    • Cancelled 5.3% of the time (8 of 151).
    • Leaves in this route's least on-time window (Noon to 3 PM: 69% on time; Before 9 AM: 91%).
    • Lands inside JFK's trouble window: 66% of its 168 ground stops and delay programs started between 1 PM and 7 PM.

    Moderate track record · 142 flights

    Find JetBlue 407 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • JetBlue76%

    342 flights · 80% on time as flown · 4.9% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM91%

    191 flights · avg delay 6 min

  • Noon to 3 PM69%

    203 flights · avg delay 26 min

Best day: Saturday (83%). Worst: Monday (77%).

Smarter routing

Nearby airports that run more on time

  • PWM → EWR 80% chance on time

    Portland International Jetport to Newark Liberty International Airport · 1,058 flights a year · 21 mi from your airports · yours: 76%

    Rank flightsFares

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
75
F
84
M
90
A
79
M
83
J
77
J
71
A
72
S
80
O
85
N
97
D
85

What delays this route

  • Air traffic control and airport volume39%
  • Airline (crew, maintenance, boarding)35%
  • Late-arriving aircraft25%
  • Severe weather2%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from PWM to JFK…

PWM to JFK questions

What time of day is best to fly PWM to JFK?
Before 9 AM: 91% of flights arrived on time, against 69% for departures noon to 3 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from PWM to JFK?
JetBlue, with a season-adjusted 76% chance of operating and arriving on time over 342 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on PWM to JFK?
July (71% on time); the best was November (97%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from PWM

Live status: FAA delays and ground stops