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

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Boston Logan International to Washington Dulles Intl Flight Information

Avg. Flight Duration 1h 33m
Flights Arrive in Washington Dulles Intl
Flights Depart from Boston Logan International
Flight Price $158
Distance 412 miles
Airlines Delta, United Airlines, Major Airline, Alaska Airlines

Good to Know

Low Season:
March
Best time to beat the crowds
1%
expected price decrease
High Season:
October
Most popular time to fly
4%
expected price increase
Average Price:
$252
(avg. price over the last 2 weeks)
Good Deal:
$201
or less (round trip)

When to Book Flights from Boston to Washington Dulles Intl

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $200 or less.
The cheapest flight from Boston to Washington Dulles Intl was found 84 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be September, October and November. The cheapest month to fly is March.
Morning departure is around 10% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Boston to Washington Dulles Intl Flights

How long does a flight from Boston to Washington Dulles Intl take?
An average nonstop flight takes 1h 34m, covering a distance of 412 miles.
How many flights are there between Boston and Washington Dulles Intl?
There are 310 (nonstop) flights between Boston and Washington Dulles Intl per week, averaging 45 per day.
Which airlines provide the cheapest flights from Boston to Washington Dulles Intl?
In the past 3 days, the cheapest round-trip tickets were found on Delta ($158), United Airlines ($160) and Multiple Airlines ($229).
Do I need a passport to fly between Boston and Washington Dulles Intl?
No.
Which airlines fly most frequently between Boston and Washington Dulles Intl?
United Airlines (8 times daily), Avianca (6 times daily), Copa Airlines (5 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Boston to Washington Dulles Intl?
For Boston to Washington Dulles Intl, Friday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Washington Dulles Intl back to Boston, the best deals are generally found on Monday, with Thursday being the most expensive.

Find the Flight That Suits You Best

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Thu 1/31
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Cheapest

Airline
Departure & Arrival Time
Stops
Duration
Delta Delta
BOS-IAD
1:30a - 2:00a
1 stop
5h 01m
BOS-IAD
$158
Delta
Delta Delta
IAD - BOS
2:00a - 1:30a
1 stop
4h 23m
IAD - BOS
View Deal

Best

Airline
Departure & Arrival Time
Stops
Duration
Alaska Airlines Alaska Airlines
BOS-IAD
2:25p - 2:00p
1 stop
12h 55m
BOS-IAD
$419
CheapOair
Alaska Airlines Alaska Airlines
IAD - BOS
2:00p - 2:25p
1 stop
16h 50m
IAD - BOS
View Deal

Quickest

Airline
Departure & Arrival Time
Stops
Duration
Major Airline Major Airline
BOS-IAD
1:40a - 4:30a
nonstop
1h 34m
BOS-IAD
$161
StudentUniverse
Major Airline Major Airline
IAD - BOS
4:30a - 1:40a
nonstop
1h 31m
IAD - BOS
View Deal

Earliest

Airline
Departure & Arrival Time
Stops
Duration
Multiple Airlines Multiple Airlines
BOS-IAD
3:14p - 12:32p
1 stop
13h 19m
BOS-IAD
$229
OneTravel
Multiple Airlines Multiple Airlines
IAD - BOS
12:32p - 3:14p
1 stop
16h 59m
IAD - BOS
View Deal
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.