Washington to South Portland Gardens (IAD-PWM): nonstop flights and who flies them

United Airlines flies nonstop between Washington (IAD) and South Portland Gardens (PWM), roughly 29 times a week. The timetable below shows the nonstop scheduled at 1h 39m to 1h 54m for the 492 miles.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

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29
Flights a week, 4-week average
1h 39m to 1h 54m
Scheduled flight time
492 mi
Nonstop distance
Free
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Washington to South Portland Gardens flight schedule

Scheduled nonstop departures for IAD to PWM starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Washington (IAD) to South Portland Gardens (PWM)
Date Flight Airline Departs IAD Arrives PWM Duration Aircraft
UA 3548United Airlines08:1810:021h 44mEmbraer E175
UA 3709United Airlines12:4714:381h 51mEmbraer E175
UA 3538United Airlines17:3019:241h 54mEmbraer E175
UA 3459United Airlines22:1023:591h 49mEmbraer E175
UA 3548United Airlines08:1810:021h 44mEmbraer E175
UA 3709United Airlines12:4714:381h 51mEmbraer E175
UA 3538United Airlines17:3019:241h 54mEmbraer E175
UA 3459United Airlines22:1023:591h 49mEmbraer E175
UA 3548United Airlines08:1810:021h 44mEmbraer E175
UA 3709United Airlines12:4714:381h 51mEmbraer E175
UA 3538United Airlines17:3019:241h 54mEmbraer E175
UA 3459United Airlines22:1023:591h 49mEmbraer E175
UA 3709United Airlines12:4714:381h 51mEmbraer E175
UA 3664United Airlines17:1519:021h 47mEmbraer E175
UA 4577United Airlines22:1023:591h 49mCR5
UA 3709United Airlines12:4714:381h 51mEmbraer E175
UA 3664United Airlines17:1519:021h 47mEmbraer E175
UA 3651United Airlines22:1223:591h 47mEmbraer E175
UA 4390United Airlines08:2810:071h 39mCR5
UA 3709United Airlines12:4714:381h 51mEmbraer E175
UA 3664United Airlines17:1519:021h 47mEmbraer E175
UA 3709United Airlines12:4714:381h 51mEmbraer E175
UA 3664United Airlines17:1519:021h 47mEmbraer E175

Showing all 23 scheduled IAD to PWM departures across 7 days with service, starting October 22, 2026. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every IAD to PWM date on the interactive map

Aircraft on the Washington to South Portland Gardens nonstop

United Airlines flies the departures in the schedule table on this page with the Embraer E175 and the Bombardier CRJ. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full IAD to PWM nonstop schedule

This page carries the full IAD to PWM nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each IAD to PWM nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

See IAD to PWM on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Washington to South Portland Gardens nonstop

Carriers operating IAD to PWM nonstop in the current schedule.

See IAD to PWM on the interactive map →

Frequently asked questions about IAD to PWM

How long is the flight from Washington (IAD) to South Portland Gardens (PWM)?
Scheduled flight times from Washington (IAD) to South Portland Gardens (PWM) run from 1h 39m to 1h 54m across the departures in the schedule table on this page. The nonstop covers about 492 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from IAD to PWM?
United Airlines is currently the only airline flying IAD to PWM nonstop. 2LNR doesn't show award or upgrade space for it on IAD to PWM, so this page carries the schedule rather than a space claim.
How many flights a week are there from IAD to PWM?
About 29 nonstop flights a week run between Washington (IAD) and South Portland Gardens (PWM) in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IAD to PWM depart?
Scheduled IAD to PWM nonstops in the next 7 days with service leave between 08:18 and 22:12, local time at Washington. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate IAD to PWM nonstop?
In the schedule table on this page, IAD to PWM nonstops fly as UA 3459, UA 3538, UA 3548, UA 3651, UA 3664, UA 3709, UA 4390, and UA 4577 on United Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on IAD to PWM?
Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on IAD to PWM. The page carries the full IAD to PWM nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAD to PWM nonstop schedule

Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro.

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