Cheap flights from Portland, Maine to Washington, D.C. from $73
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Washington, D.C. departing on 8/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Portland, Maine to Washington, D.C. Dulles Intl Airport
Our best United Airlines deals on Portland, Maine to Washington, D.C. Dulles Intl Airport flight tickets
Delta flights from Portland, Maine to Washington, D.C. Dulles Intl Airport
Our best Delta deals on Portland, Maine to Washington, D.C. Dulles Intl Airport flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Portland, Maine to Washington, D.C. Dulles Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?
In general, October is the cheapest month to fly from Portland, Maine to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $276. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of October, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $281.
What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $427. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Portland, Maine to Washington, D.C. Dulles Intl Airport for around $582.
What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Flying to Washington, D.C. Dulles Intl Airport from Portland, Maine in the evening is the least expensive time of day to depart. momondo users have found prices as low as $452 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $676 on average. Flights to Washington, D.C. Dulles Intl Airport from Portland, Maine in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Portland to Washington, D.C. Dulles Intl flight route?
Fly from Portland to Washington, D.C. Dulles Intl for the best Portland - Washington, D.C. Dulles Intl flight prices
How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?
You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $328 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Portland, Maine for as low as $254 on momondo.
What cabin class options are available on Portland to Washington, D.C. Dulles Intl flights?
There are 4 cabin classes available to choose from on Portland to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Portland to Washington, D.C. Dulles Intl?
Frontier, Delta, and United Airlines are the most popular carriers operating from Portland to Washington, D.C. Dulles Intl
What airlines fly to Washington, D.C. Dulles Intl Airport?
United Airlines, Spirit Airlines and JetBlue are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Portland, Maine according to our data. United Airlines is the first choice among our users, with 97% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Portland, Maine to Washington, D.C. Dulles Intl Airport on average per day?
As of July 2025, there are 5 flights per day flying from Portland, Maine to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 10:00AM, with 40% of flights taking off at noon.
How many flights depart from Portland, Maine to Washington, D.C. Dulles Intl Airport on average per week?
36 flights are operational weekly from Portland, Maine to Washington, D.C. Dulles Intl Airport as of July 2025. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.
When to book flights from Portland, Maine to Washington, D.C. Dulles Intl Airport
Cheap Portland, Maine to Washington, D.C. Dulles Intl Airport (PWM to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Washington, D.C. Dulles Intl Airport
How far is Portland to Washington, D.C. Dulles Intl by plane?
The distance between Portland and Washington, D.C. Dulles Intl is about 494.7 mi. 1h 45m is a normal flight duration for this route.
When did momondo last update prices for flights from Portland Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Portland Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Washington, D.C. Dulles Intl Airport?
As of July 2025, there is 1 operator available to choose from for flights from Portland Airport to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from Portland Airport to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Portland, Maine to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Portland, Maine to Washington, D.C. Dulles Intl Airport is Embraer 175 (Enhanced Winglets) (21.76% of total bookings). The next most popular plane models are Embraer 170 (18.06%), Boeing 737-700 Passenger/BBJ1 (winglets) (8.49%), and Boeing 737-800 Passenger/BBJ2 (winglets) (8.05%).
What is the most popular airline from Portland, Maine to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland, Maine to Washington, D.C. Dulles Intl Airport is United Airlines (100% of total bookings).
Best airlines flying from Portland, Maine to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from Portland, Maine to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $207 | Free Cancellation | Rating 7.4 8,858 reviews |
United Airlines Flights From Portland, Maine to Washington, D.C. Dulles Intl Airport
United Airlines is one of the most popular airlines flying from Portland, Maine to Washington, D.C. Dulles Intl Airport, operating 24 flights/week on average for this route. A good United Airlines flight deal for Portland, Maine to Washington, D.C. Dulles Intl Airport starts from $207 round-trip, up to an average price of $320. Our users have rated United Airlines at 7.4/10.
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Why should I use momondo to find a flight deal from Portland to Washington, D.C.?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Washington, D.C.. momondo saves you time and could save you money on your trip.
Can I find flights from Portland to Washington, D.C. with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Portland to Washington, D.C. flights to just show those with flexible booking policies.
How can momondo help me find flights from Portland to Washington, D.C.?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Portland.
I’m not ready to book a flight from Portland to Washington, D.C. right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Portland to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.