Cheap flights from Washington, D.C. to South Portland

Flight deals from Washington, D.C. to South Portland

Below you can see the best deals on flights Washington, D.C. — South Portland for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 29 September, from $110.

Top 10 cheap flights from Washington, D.C. to South Portland

Washington, D.C. — South Portland

17:05—23:56

12 Sep 2026

6 h 51 m

1 stop

Washington, D.C. — South Portland

14:00—21:00

12 Sep 2026

7 h

1 stop

Washington, D.C. — South Portland

13:15—16:49

15 Sep 2026

3 h 34 m

1 stop

Washington, D.C. — South Portland

19:15—23:17

15 Sep 2026

4 h 2 m

1 stop

Washington, D.C. — South Portland

06:20—10:55

15 Sep 2026

4 h 35 m

1 stop

Washington, D.C. — South Portland

11:10—15:39

15 Sep 2026

4 h 29 m

1 stop

Washington, D.C. — South Portland

18:26—23:56

15 Sep 2026

5 h 30 m

1 stop

Washington, D.C. — South Portland

19:15—23:17

8 Sep 2026

4 h 2 m

1 stop

Washington, D.C. — South Portland

11:10—15:39

8 Sep 2026

4 h 29 m

1 stop

Washington, D.C. — South Portland

18:26—23:56

8 Sep 2026

5 h 30 m

1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Washington, D.C. — South Portland flight

Looking for cheap flights from Washington, D.C. to South Portland? Compare fares from different airlines, check the flight schedule and travel time — and book your Washington, D.C. — South Portland ticket online at the best price.

The route has direct flights — around 105 flights per week, flights are operated by United Airlines, American Airlines, a nonstop flight takes about 1 h 38 min, the distance between the cities is around 775 km.

Planning your trip? You may find our South Portland travel guide, how to get from the airport into town and South Portland weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

from $110Min. price

SeptemberCheapest

AugustPeak season

YesDirect flights

775 kmDistance

1 h 38 minTravel time

2Airlines

105 / wkFlights

Flight schedule from Washington, D.C. to South Portland

The table shows direct flights from Washington, D.C. to South Portland on the selected date. The flight takes approximately 1 h 38 min. Regular flights are operated by United Airlines and American Airlines. Departures from Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport and Ronald Reagan National Airport airports, arrivals at Portland International Jetport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today

Any time

Last update: 16 Aug 2026

Airline

Flight

Departure

Arrival

Duration

Days

Status

Below is a calendar of the lowest flight ticket prices for Washington, D.C. — South Portland by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $110 in September, and the most expensive are around $238 in August. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

Prices by month

Average one-way fares from Washington, D.C. to South Portland by month. Tickets are usually cheapest in September (around $143) and priciest in July (about $195) — use the table and chart below to pick the best time to fly.

Month	Average price	Level	Month	Average price	Level	Month	Average price	Level
Jan	$148	low	May	$172	medium	Sep	$143	low
Feb	$148	low	Jun	$186	high	Oct	$153	low
Mar	$162	medium	Jul	$195	high	Nov	$167	medium
Apr	$162	medium	Aug	$181	high	Dec	$181	high

Some values are estimated based on seasonality.

When to fly

Weather in South Portland: it is warmest in July (up to 25 °C on average) and coolest in January (around 1 °C). The driest month is September.

Tickets are usually cheapest in September and most expensive in August. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · South Portland

Dry and wet days · South Portland

Wind speed and direction · South Portland

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How to get the best deal on a Washington, D.C. — South Portland ticket

Book ahead: fares for Washington, D.C. — South Portland are usually lower 3–8 weeks before departure than at the last minute.
Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
Washington, D.C. is served by more than one airport — compare fares and travel time to each before you book.
The cheapest month to fly to South Portland is usually September — plan your trip around it if your dates are flexible.
Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Flights on the Washington, D.C. — South Portland route are operated by 2 airlines; United Airlines runs the most flights (around 57% of all flights). Compare carriers, flight shares and schedules below.

United AirlinesUA
20x/week
WebsiteFleet: 956165M pax/year
- Direct flight IAD → PWM20x/week
  Duration
  1h 47m
  Days
  MTWTFSS
57.1%Open →
American AirlinesAA
15x/week
WebsiteFleet: 965211M pax/year
- Direct flight DCA → PWM15x/week
  Duration
  1h 41m
  Days
  MTWTFSS
42.9%Open →

Cities and airports on the Washington, D.C. — South Portland route

Flights Washington, D.C. — South Portland depart from Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport and Ronald Reagan National Airport and arrive at Portland International Jetport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Washington, D.C.

WAS

United States

About the city How to get there Weather All about the country United States

Arrival

South Portland

PWM

United States

About the city How to get there Weather All about the country United States

Departure airports

Washington Dulles International AirportIAD
About the airport
Baltimore/Washington International Thurgood Marshall AirportBWI
About the airport
Ronald Reagan National AirportDCA
About the airport

Arrival airports

Portland International JetportPWM
About the airport

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Frequently asked questions about the Washington, D.C. — South Portland flight

How long is the flight from Washington, D.C. to South Portland?

A nonstop Washington, D.C. — South Portland flight takes about 1 h 38 min — the distance between the cities is around 775 km.

How far is it from Washington, D.C. to South Portland?

The distance from Washington, D.C. to South Portland is about 775 km, which a nonstop flight covers in around 1 h 38 min.

Are there direct flights from Washington, D.C. to South Portland?

Yes, there are nonstop flights Washington, D.C. — South Portland — around 105 flights per week.

Which airlines fly from Washington, D.C. to South Portland?

Airlines operating Washington, D.C. — South Portland include United Airlines, American Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do Washington, D.C. — South Portland flights use?

Flights from Washington, D.C. depart from Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport, Ronald Reagan National Airport, and arrive at Portland International Jetport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Washington, D.C. to South Portland?

The price of a Washington, D.C. — South Portland ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in August. Tickets typically cost between $110 and $238. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Washington, D.C. — South Portland?

Flights Washington, D.C. — South Portland are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Washington, D.C. to South Portland?

To catch a low fare Washington, D.C. — South Portland, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from South Portland

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Cheap flights from Washington, D.C. to South Portland

Flight deals from Washington, D.C. to South Portland

Top 10 cheap flights from Washington, D.C. to South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Top 10 direct flights from Washington, D.C. to South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. to South Portland: departing soon

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

Washington, D.C. — South Portland

About the Washington, D.C. — South Portland flight

Facts about this route

Flight schedule from Washington, D.C. to South Portland

Flight ticket prices by day: Washington, D.C. — South Portland

Prices by month

When to fly

Temperature · South Portland

Dry and wet days · South Portland

Wind speed and direction · South Portland

We'll let you know if you need a visa

How to get the best deal on a Washington, D.C. — South Portland ticket

Cities and airports on the Washington, D.C. — South Portland route

Washington, D.C.

South Portland

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Frequently asked questions about the Washington, D.C. — South Portland flight

Where else you can fly from Washington, D.C.

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