BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
EWRPWM

Newark, NJ (EWR) to Portland, ME (PWM) flight delay odds

Historically, 79.1% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 984 flights.

HISTORICAL ROUTE SIGNALVariable
79.1%arrived on time
12.5%30+ min late
3.4%cancelled
984scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.4%all scheduled flights
120+ minutes late2.7%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+1.7 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning16593.3%3.0%1.2%
Late morning12191.7%4.1%0.8%
Afternoon30780.8%11.4%3.6%
Evening6764.2%23.9%4.5%
Night32468.5%19.1%4.9%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday14574.5%13.8%5.5%
Tuesday14382.5%7.0%4.2%
Wednesday14180.9%11.3%2.8%
Thursday14978.5%14.8%3.4%
Friday14981.9%10.7%2.0%
Saturday11379.6%14.2%0.9%
Sunday14475.7%16.0%4.2%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways82584.1%9.1%2.9%
United Airlines15952.8%30.2%5.7%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202512362.6%18.7%11.4%
August 202512281.1%12.3%1.6%
September 202511785.5%9.4%1.7%
October 202512985.3%9.3%0.0%
November 20255463.0%29.6%1.9%
December 20254755.3%25.5%2.1%
January 20264682.6%4.3%8.7%
February 20263372.7%15.2%6.1%
March 20267280.6%12.5%1.4%
April 20267100.0%0.0%0.0%
May 202611889.8%6.8%0.8%
June 202611685.3%8.6%4.3%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline22.0%
Late aircraft57.0%
National airspace20.5%
Weather0.4%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.