Route on-time record
PWM to LGA: most on-time flights and the best time to fly
Portland (Portland International Jetport) to New York (LaGuardia Airport). 1,105 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 4.5% were cancelled. The most reliable flight number was Republic 4488 at 10:24 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
PWM → LGA
Portland to New York: 1,105 nonstop flights a year
On time (12 months)
81%
Cancelled
4.5%
avg delay 15 min
Best time to leave
Before 9 AM
88% on time vs 71% 3 to 6 PM
Most reliable airline
Republic
77% chance on time
Lowest nonstop fare seen in the next two months: $247 (American 3079 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 · Republic 4488 · sold as American Eagle, Delta Connection or United Express
10:24 AM → 11:57 AM1h 33m nonstop
Local times, typical schedule. Last flown 2026-05-20.
87%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 95% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
Limited track record · 44 flights
Find 10:24 AM flight fares Opens this date on Aviasales#2 · Republic 4753 · sold as American Eagle, Delta Connection or United Express
3:39 PM → 5:13 PM1h 34m nonstop
Local times, typical schedule. Last flown 2026-05-20.
84%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 91% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 71% on time; Before 9 AM: 88%).
- Lands inside LGA's trouble window: 55% of its 284 ground stops and delay programs started between noon and 6 PM.
Limited track record · 44 flights
Find 3:39 PM flight fares Opens this date on Aviasales#3 · Republic 5841 · sold as American Eagle, Delta Connection or United Express
6:02 AM → 7:30 AM1h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 92% of the time (24 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 71%).
Limited track record · 24 flights
Find 6:02 AM flight fares Opens this date on Aviasales#4 · Republic 4486 · sold as American Eagle, Delta Connection or United Express
9:29 AM → 11:00 AM1h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 min
- Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
Limited track record · 11 flights
Find 9:29 AM flight fares Opens this date on Aviasales#5 · Republic 5823 · sold as American Eagle, Delta Connection or United Express
10:57 AM → 12:25 PM1h 28m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
- Lands inside LGA's trouble window: 55% of its 284 ground stops and delay programs started between noon and 6 PM.
Limited track record · 8 flights
Find 10:57 AM flight fares Opens this date on Aviasales#6 · American 2931
1:35 PM → 3:00 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 63%
- Cancelled
- 0.0%
- Avg arrival delay
- 31 min
- Arrived on time 63% of the time (8 flights, Jun 2025 to May 2026).
- Lands inside LGA's trouble window: 55% of its 284 ground stops and delay programs started between noon and 6 PM.
Limited track record · 8 flights
Find American 2931 fares Opens this date on Aviasales#7 · Republic 5815 · sold as American Eagle, Delta Connection or United Express
5:15 PM → 6:42 PM1h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
- On time (history)
- 85%
- Cancelled
- 4.8%
- Avg arrival delay
- 16 min
- Arrived on time 85% of the time (20 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 71% on time; Before 9 AM: 88%).
Limited track record · 20 flights
Find 5:15 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Republic Airways (sold as American Eagle, Delta Connection or United Express)77%
1,097 flights · 81% on time as flown · 4.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
379 flights · avg delay 9 min
- 9 AM to noon83%
206 flights · avg delay 15 min
- Noon to 3 PM80%
209 flights · avg delay 17 min
- 3 to 6 PM71%
307 flights · avg delay 22 min
Best day: Saturday (86%). Worst: Friday (79%).
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 · 17 mi from your airports · yours: 77%
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.
What delays this route
- Air traffic control and airport volume39%
- Late-arriving aircraft29%
- Airline (crew, maintenance, boarding)27%
- Severe weather5%
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
PWM to LGA questions
- What time of day is best to fly PWM to LGA?
- Before 9 AM: 88% of flights arrived on time, against 71% for departures 3 to 6 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 LGA?
- Republic, with a season-adjusted 77% chance of operating and arriving on time over 1,097 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 LGA?
- June (76% on time); the best was October (89%), 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
- LGA to PWM (return)
- PWM to ORD 76%
- PWM to BWI 81%
- PWM to DCA 73%
- PWM to EWR 83%
- PWM to PHL 77%
- PWM to CLT 80%
- PWM to IAD 85%
- PWM to ATL 78%
- PWM to DTW 79%
- PWM to JFK 80%
Live status: FAA delays and ground stops