IAD - BOS

$65 Find Cheap Flights from Washington Dulles Airport to Boston - Compare and Save

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Everything you should know

Cheapest round-trip
$140
Typical prices: $225-$387
United Airlines
Mon 11/12Wed 11/14
IAD - BOS • Non-stop
Cheapest one-way
$65
Typical prices: $129-$257
Frontier
Thu 12/13
IAD - BOS • 1 stop
Nonstop flights
You can fly direct with United Airlines. Average duration is 1h 44m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 84% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 22 weeks in advance save around 54% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $209 (round-trip)
Shortest trip • 4h 21m (one-way)
Insights
Insights
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We hope you love your trip to Boston!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Dulles Intl to Boston (IAD-BOS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Boston

Thu, Nov 12 - Sat, Nov 14
United Airlines Logo
8:40 am - 10:19 amIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
1h 39mnonstop
United Airlines Logo
5:30 am - 7:10 amBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
1h 40mnonstop
$140United Airlines
Wed, Oct 21 - Thu, Oct 22
United Airlines Logo
1:10 pm - 2:55 pmIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
1h 45mnonstop
United Airlines Logo
5:45 am - 7:20 amBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
1h 35mnonstop
$142United Airlines
Wed, Dec 2 - Fri, Dec 11
United Airlines Logo
8:40 am - 10:19 amIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
1h 39mnonstop
United Airlines Logo
5:45 am - 7:25 amBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
1h 40mnonstop
$144United Airlines
Tue, Oct 27 - Fri, Oct 30
United Airlines Logo
12:50 pm - 2:32 pmIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
1h 42mnonstop
United Airlines Logo
5:30 am - 7:10 amBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
1h 40mnonstop
$144United Airlines
Thu, Dec 10 - Sat, Dec 12
Frontier Logo
10:33 pm - 10:39 amIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
12h 06m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
11:08 am - 9:29 pmBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
10h 21m1 stop Orlando
$151Frontier
Fri, Oct 23 - Tue, Oct 27
Frontier Logo
11:12 am - 11:02 amIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
23h 50m1 stop Orlando
Frontier Logo
11:12 am - 11:43 pmBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
12h 31m1 stop Atlanta Hartsfield-Jackson
$151Frontier
Thu, Dec 10 - Sun, Dec 13
Frontier Logo
10:33 pm - 10:39 amIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
12h 06m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
11:08 am - 9:29 pmBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
10h 21m1 stop Orlando
$151Frontier
Sat, Oct 17 - Sun, Oct 18
Delta Logo
6:31 pm - 11:08 pmIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
4h 37m1 stop New York John F Kennedy Intl
Delta Logo
6:00 am - 11:50 amBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
5h 50m1 stop New York John F Kennedy Intl
$251Delta
Thu, Oct 15 - Mon, Oct 19
Delta Logo
6:32 pm - 11:08 pmIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
4h 36m1 stop New York John F Kennedy Intl
Delta Logo
1:35 pm - 5:33 pmBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
3h 58m1 stop New York John F Kennedy Intl
$251Delta
Sat, Oct 17 - Mon, Oct 19
Delta Logo
5:08 pm - 11:59 pmIAD  Washington, D.C. Dulles Intl-BOS Boston Logan Intl
6h 51m1 stop Detroit Metropolitan Wayne County
Delta Logo
1:35 pm - 5:33 pmBOS  Boston Logan Intl-IAD Washington, D.C. Dulles Intl
3h 58m1 stop New York John F Kennedy Intl
$251Delta
Booking Insights

Price, demand and travel trends for Washington, D.C. Dulles Intl Airport to Boston flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Boston?

Round-trip flights from Washington, D.C. Dulles Intl Airport to Boston typically range from $225 to $387. The lowest price found in the past 5 days was $140, on United Airlines.

What's the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Boston?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Boston. It’s 9% cheaper than the average day, while Sunday is the most expensive, with prices 18% higher.

What’s the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Boston?

•January is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Boston at $227 round-trip.
•June ($395) and July ($381) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 74% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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

Flights from Washington, D.C. Dulles Intl Airport to Boston are cheapest 22 weeks before departure. Booking in this window typically costs about 54% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Dulles Intl to Boston

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on BOS

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Key details for Washington, D.C. Dulles Intl Airport to Boston flights

Low season

January

Cheapest flight

$65
Beat the crowds with an average 32% drop in travelers.
One-way flight from Washington, D.C. Dulles Intl Airport to Boston

When to book flights from Dulles Intl to Boston

Are your dates flexible? Find out the best times to travel from Dulles Intl to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. Dulles Intl Airport to Boston flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Washington, D.C. Dulles Intl Airport to Boston?

    These are the earliest and latest flight times available from Washington, D.C. Dulles Intl Airport to Boston:

    • Earliest: departs at 8:15 am and lands at 9:59 am
    • Latest: departs at 10:25 pm and lands at 12:09 am.

    The flight takes about 1h 44m.

  • What cabin classes can I book on flights from Washington, D.C. Dulles Intl Airport to Boston?

    Three cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Boston:

    • Economy Class
    • Premium Economy Class
    • First Class

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

    A nonstop flight from Washington, D.C. Dulles Intl Airport to Boston takes 1h 44m, covering 411 miles.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to Boston?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Washington, D.C. Dulles Intl Airport to Boston flight?

    Round-trip flights from Washington, D.C. Dulles Intl Airport to Boston range from $225 to $387, with an average of $294 over the past 12 months. Anything below $225 counts as a good deal.

  • How expensive are last-minute Washington, D.C. Dulles Intl Airport to Boston flights?

    Last-minute fares on this route (booked within two weeks of departure) run 21% above the $294 route average. Book 22 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Washington, D.C. Dulles Intl Airport to Boston?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $209 round-trip via Atlanta Hartsfield-Jackson (ATL), compared to $297 for nonstop.

  • How does on-time performance compare across airlines flying from Washington, D.C. Dulles Intl Airport to Boston?

    United Airlines is the only airline operating Washington, D.C. Dulles Intl Airport to Boston flights. 84% of its flights are on time.

  • What is the standard checked-bag allowance on flights from Washington, D.C. Dulles Intl Airport to Boston?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Washington, D.C. Dulles Intl Airport to Boston?

    The Boeing 737 MAX 9 family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Embraer 175 variants.

  • How are flight departures from Washington, D.C. Dulles Intl Airport to Boston spread across the day?

    Morning is the busiest departure period on Washington, D.C. Dulles Intl Airport to Boston flights, with 25% of flights leaving in that window. Afternoon departures account for 25%, evening flights for 25%, and night flights for 25%.

  • Have flight prices from Washington, D.C. Dulles Intl Airport to Boston changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $140 to $1,302. That means the highest observed fare was about 9x higher than the lowest one.

  • Which airlines offer Wi-Fi on Washington, D.C. Dulles Intl Airport to Boston flights?

    JetBlue is the only airline on the Washington, D.C. Dulles Intl Airport to Boston route offering in-flight Wi-Fi. Pricing depends on fare class.

  • How are flight prices from Washington, D.C. Dulles Intl Airport to Boston looking right now?

    One-way fares from Washington, D.C. Dulles Intl Airport to Boston are currently lower than usual. Average one-way flight prices are about $90, which is 51% below the typical average for this route.

  • What car rental options are available at Boston Logan Intl Airport (BOS)?

    Boston Logan Intl Airport (BOS) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:

    • Dollar
    • Hertz
    • Budget
    • Thrifty
    • Sixt

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to Boston?

    Flights from Washington, D.C. Dulles Intl Airport to Boston usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Boston Logan Intl (BOS).

  • What time of day has the fewest delays on flights from Washington, D.C. Dulles Intl Airport to Boston?

    Morning flights have the fewest delays on this route, while afternoon departures tend to have the most.

  • At what point is a flight considered delayed from Washington, D.C. Dulles Intl Airport to Boston?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Washington, D.C. Dulles Intl Airport to Boston route, 16% of flights were delayed in the past 3 months, with delays averaging 2h 04m.

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to Boston pass through?

    One-stop flights from Washington, D.C. Dulles Intl Airport to Boston most commonly connect through:

    • Newark (EWR) - 73% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 12% of one-stop connections
    • Tampa (TPA) - 8% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 4% of one-stop connections

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to Boston?

    Yes. Flexible dates can save you up to 24% on flights from Washington, D.C. Dulles Intl Airport to Boston. Wednesday is the cheapest departure day at $268 round-trip on average, while Sunday is the most expensive at $349, a difference of $81.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Washington, D.C. Dulles Intl Airport to Boston?

    Only United Airlines operates flights between Washington, D.C. Dulles Intl Airport and Boston.

  • How much time can I save by choosing a different layover airport from Washington, D.C. Dulles Intl Airport to Boston?

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time at 4h 21m, compared with 4h 54m via New York John F Kennedy Intl (JFK) and 9h 10m via Atlanta Hartsfield-Jackson (ATL).

  • What popular places can I visit in Boston?

    Some of the most popular sights in Boston are TD Garden, Fenway Park and Boston Common. These are among the most viewed places in Boston on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Washington, D.C. Dulles Intl Airport to Boston flights?

    Among airlines operating Washington, D.C. Dulles Intl Airport to Boston flights:

    • United Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Washington, D.C. Dulles Intl Airport to Boston flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy Class
    • JetBlue: a cabin bag in Economy Class class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

  • What are the options to get to IAD from the city center?

    Washington Dulles International Airport (IAD) is about 26 miles from the city center. The Silver Line Metro connects downtown Washington, D.C. with the Dulles Airport Metrorail Station. Alternatively, Washington Flyer Taxicabs offer 24-hour service to and from the airport.

  • Are there pet relief areas in Washington Dulles Airport?

    Yes, IAD has pet relief areas in the concourses near the security area and in the baggage claim area.

Your guide to booking Washington, D.C. Dulles Intl Airport to Boston flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Sunday. On this route, Wednesday flights average $268, about $81 less than Sunday fares (23% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 22 weeks before you fly. On this route, that window historically saves about 54% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Boston trip for January. Fares historically average $227 round-trip in that month - typically $168 less than the most expensive month, which is June (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Atlanta Hartsfield-Jackson Airport (ATL) can be cheaper than flying direct. The cheapest layover option averages $209 round-trip on this route - about $88 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Boston Logan Intl Airport.

    • Hilton Garden Inn Boston Logan Airport
    • Hilton Boston Logan Airport
    • Hyatt Regency Boston Harbor
  • On a United Airlines flight, use the in-flight entertainment to pass the time. It includes over 1,600 hours of content and the 737-800 and 737-900ER fleets are being retrofitted with seatback entertainment, Bluetooth connectivity and high-speed Wi-Fi.
  • If you need mobility assistance at Washington Dulles Airport (IAD), use the airport's wheelchairs and other accessibility transportation options to reach your gate more quickly and easily.
  • For a more comfortable place to relax before your flight, stop by one of the lounges at BOS. The American Airlines Admirals Club offers complimentary Wi-Fi, food and drinks and business facilities, including one conference room.

Prefer to fly direct from Washington Dulles Airport to Boston?

 
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Boston Logan Intl Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Boston Logan Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Boston Logan Intl to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

More options for your flight from Dulles Intl to Boston

Complete your trip to Boston with a hotel stay or car rental