Cheap flights from Boston to Washington, D.C. from $80
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Washington, D.C. departing on 7/31. 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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Allegiant Air flights from Boston to Washington, D.C. Dulles Intl Airport
Our best Allegiant Air deals on Boston to Washington, D.C. Dulles Intl Airport flight tickets
Frontier flights from Boston to Washington, D.C. Dulles Intl Airport
Our best Frontier deals on Boston 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 Boston 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, January is the cheapest month to fly from Boston 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 $207. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $247.
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 $426. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Boston to Washington, D.C. Dulles Intl Airport for around $719.
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 Boston in the evening is the least expensive time of day to depart. momondo users have found prices as low as $544 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $684 on average. Flights to Washington, D.C. Dulles Intl Airport from Boston at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Boston Logan Intl to Washington, D.C. Dulles Intl flight route?
Fly from Boston Logan Intl to Washington, D.C. Dulles Intl for the best Boston Logan Intl - 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 Boston when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $272 when searching 14 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 Boston for as low as $221 on momondo.
What cabin class options are available on Boston Logan Intl to Washington, D.C. Dulles Intl flights?
There are 4 cabin classes available to choose from on Boston Logan Intl 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 Boston Logan Intl to Washington, D.C. Dulles Intl?
Allegiant Air, United Airlines, and Delta are the most popular carriers operating from Boston Logan Intl 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 Boston 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 Boston to Washington, D.C. Dulles Intl Airport on average per day?
The number of flights available between Boston and Washington, D.C. Dulles Intl Airport is 15 per day as of June 2025. The most frequent departure time is 5:00AM, with 26% of daily flights leaving in the morning.
How many flights depart from Boston to Washington, D.C. Dulles Intl Airport on average per week?
As of June 2025, there are 106 flights per week flying from Boston to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Thu, with 19% of flights taking off on this day.
When to book flights from Boston to Washington, D.C. Dulles Intl Airport
Cheap Boston to Washington, D.C. Dulles Intl Airport (BOS to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Boston to Washington, D.C. Dulles Intl Airport
How far is Boston Logan Intl to Washington, D.C. Dulles Intl by plane?
There are 409.1 mi between Boston Logan Intl and Washington, D.C. Dulles Intl. Flights usually cover this in 1h 34m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Boston Logan Intl Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Boston Logan Intl Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Boston Logan Intl Airport to Washington, D.C. Dulles Intl Airport?
The number of operators available for flights from Boston Logan Intl Airport to Washington, D.C. Dulles Intl Airport is 4 as of June 2025.
How old do you have to be to fly from Boston Logan Intl Airport to Washington, D.C. Dulles Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl 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 required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Boston to Washington, D.C. Dulles Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from Boston to Washington, D.C. Dulles Intl Airport is Boeing 737-900, representing 12.09% of all bookings. The subsequent popular models are Boeing 737-800 at 10.30%, Embraer 175 at 8.27%, and Airbus A320 (sharklets) at 6.37%.
What is the most popular airline from Boston to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Boston to Washington, D.C. Dulles Intl Airport is United Airlines (96% of total bookings). The next most popular airlines are Spirit Airlines (2%), JetBlue (1%), and Delta (1%).
Best airlines flying from Boston to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from Boston to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $51 | Free Cancellation | Rating 6.3 8,052 reviews | |||
| PriceFrom $73 | Free Cancellation | Rating 7.3 2,925 reviews | |||
| PriceFrom $116 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $154 | Free Cancellation | Rating 7.4 8,790 reviews |
United Airlines Flights From Boston to Washington, D.C. Dulles Intl Airport
United Airlines operates around 25 flights from Boston to Washington, D.C. Dulles Intl Airport every week. The average price of these flights found in the last 72 hours has been $277, but momondo users have found United Airlines deals from Boston to Washington, D.C. Dulles Intl Airport from as low as $154 round-trip. United Airlines has been scored 7.4/10 in 8,790 reviews.
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Why should I use momondo to find a flight deal from Boston to Washington, D.C.?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boston to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Boston to Washington, D.C. with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Boston to Washington, D.C. flights to just show those with flexible booking policies.
How can momondo help me find flights from Boston to Washington, D.C.?
Once all potential Boston to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Boston to Washington, D.C. right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Boston to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.