How long is the flight from Boston to Washington, D.C. Dulles Intl Airport?

A quick flight from Boston to Washington, D.C. Dulles Intl Airport can take about 1h 41m. United Airlines provides one of the quickest options available for as low as $158. Airlines will cover a distance of 411 mi. Generally, flights for this route are nonstop.

What are the cheapest airlines flying from Boston to Washington, D.C. Dulles Intl Airport round-trip?

According to our current data, Spirit Airlines ($51), JetBlue ($68), and Delta ($84) offers the cheapest pricing from Boston to Washington, D.C. Dulles Intl Airport. Users have found that Spirit Airlines is 82% cheaper than the other options available to this destination.

How far ahead should I book a flight from Boston to Washington, D.C. Dulles Intl Airport?

The price you pay for your flight from Boston to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 59 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Boston to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Boston to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Boston to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Boston to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Boston to Washington, D.C. Dulles Intl Airport flight should consider departing on Monday afternoons when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boston to Washington, D.C. Dulles Intl Airport

The most flights from BOS to IAD are scheduled on a Tuesday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the cheapest flights from Boston to Washington, D.C. Dulles Intl Airport?

On average you can expect to pay $770 for a flight from Boston to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $93 while the most popular route, (Boston Logan Intl - Washington, D.C. Dulles Intl) is currently priced at $122.

What are the most reliable airlines from Boston to Washington, D.C. Dulles Intl Airport?

Before booking your flight to Washington, D.C. Dulles Intl Airport from Boston, check out the most reliable airlines to get you to your destination on time: Ethiopian Air (97%), Air China (94%), Egyptair( 92%).

What are the most popular airlines that fly from Boston to Washington, D.C. Dulles Intl Airport?

The most popular airlines flying from Boston to Washington, D.C. Dulles Intl Airport are JetBlue, Delta and Spirit Airlines. Something to consider prior to booking your flight.

What is the cheapest time of day to fly from BOS to IAD?

When flying from Boston to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 17% versus a flight at noon.

What airport do you fly from for flights from Boston to Washington, D.C. Dulles Intl?

If you book a flight to Washington, D.C. Dulles Intl from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 15 flights from Logan Intl to Washington, D.C. Dulles Intl per day from 4 different airlines.

Can I find deals for flights from Boston to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Boston to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Boston to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Dulles Intl.

Can I find deals for business class flights from Boston to Dulles Intl?

Yes. Cheapflights offers flight deals from Boston to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$79+ Cheap Flights from Boston to Washington, D.C. Dulles Intl Airport

Round-trip from	$155 (United Airlines)
One-way from	$79 (United Airlines)
Popular in	June
Cheapest in	January
Average price	$301
Good round-trip deal	$289 or less
Good one-way deal	$149 or less

Basic Economy restricts carry-ons; only personal items allowed unless exceptions apply.

Economy Plus offers extra legroom and priority seating for MileagePlus Premier members.

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$51	Average$121	FlexibilityNo cancel fee	On-time65%
JetBlue	Cheapest$68	Average$297	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$84	Average$248	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$157	Average$285	FlexibilityNo cancel fee	On-time69%

$79+ Cheap flights from Boston (BOS) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Boston to Dulles Intl with Cheapflights

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Cheapflights Tip: The best prices from Boston Logan Intl to Washington, D.C. Dulles Intl are usually found in January or March, booked 59 days in advance, depart on a Friday or Thursday and return on a Wednesday

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Cheapest flights from Boston to Dulles IntlExplore the most affordable flight options available from Boston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

Explore the most affordable flight options available from Boston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

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The best insider tips for Boston to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Boston to Washington, D.C. Dulles Intl Airport trip

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Best time to book a flight from Boston to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Boston with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Boston to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Boston to Washington, D.C. Dulles Intl Airport?

What is the cheapest month to book a flight from Boston to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to fly from BOS to IAD?

What is the cheapest day to fly from Boston to Washington, D.C. Dulles Intl Airport?

Weekly flight availability from Boston to Washington, D.C. Dulles Intl Airport

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with Delta, United Airlines, and JetBlue from Boston to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boston to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Boston to Washington, D.C. Dulles Intl?

How long is the flight from Boston to Washington, D.C. Dulles Intl Airport?

What are the cheapest airlines flying from Boston to Washington, D.C. Dulles Intl Airport round-trip?

What are the most reliable airlines from Boston to Washington, D.C. Dulles Intl Airport?

What are the cheapest flights from Boston to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Boston to Dulles Intl that include hotel bookings?

How can I find direct flights from Boston to Dulles Intl?

Can I find deals for business class flights from Boston to Dulles Intl?

What is the cheapest month to book a flight from Boston to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Cheapest flights from Boston to Dulles Intl
Explore the most affordable flight options available from Boston to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.