What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to Boston flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.

How often are flights from Washington, D.C. to Boston delayed?

About 18% of weekly flights between Washington, D.C. and Boston have experienced delays in the past year, with the average delay time being 123 minutes.

What is the most punctual flight time for Washington, D.C. to Boston flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

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

Airlines like United Airlines fly from Washington, D.C. Dulles Intl Airport to Boston in about 3h 49m. The time it takes to get you to your destination can typically vary by up to . There are 411 mi between Washington, D.C. Dulles Intl Airport and Boston.

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

The most flights from IAD to BOS are scheduled on a Tuesday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

In terms of precipitation, rainfall in Boston ranges from 78.0 - 101.0 inches per month. March is typically the wettest month, when rainfall can reach 101.0 mm. July is typically the driest time to visit Boston when rainfall is around 78.0 mm.

If weather is an important factor for your trip to Boston, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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

Before booking your flight to Boston from Washington, D.C. Dulles Intl Airport, check out the most reliable airlines to get you to your destination on time: Egyptair (92%), ITA Airways (79%), Avianca( 79%).

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

Most people fly into Boston Logan Intl (BOS) if they book a flight to Boston from Washington, D.C. Dulles Intl. On average, Logan Intl has 13 inbound flights from Washington, D.C. Dulles Intl per day from 0 airlines. Boston Logan Intl is conveniently located just 2.6 mi from Boston’s city center.

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

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

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

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

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

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

£54+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Boston

Cheap flight deals from Dulles Intl to Boston

Enter your travel dates to find the best prices.

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Cheapest flights from Dulles Intl to Boston
Explore the most affordable flight options available from Dulles Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Fri 30/1022:19 -

Nonstop1h 40m

Tue 3/1105:30 -

Nonstop1h 40m

Deal found 27/9£109

Tue 27/1006:10 -

1 stop4h 41m

Fri 30/1005:30 -

Nonstop1h 40m

Deal found 30/9£111

Thu 17/1222:20 -

Nonstop1h 39m

Fri 8/112:00 -

1 stop4h 14m

Deal found 27/9£113

Mon 14/1208:35 -

1 stop3h 52m

Mon 18/112:00 -

1 stop4h 14m

Deal found 30/9£115

Sat 31/1008:37 -

1 stop3h 49m

Tue 3/1105:30 -

Nonstop1h 40m

Deal found 28/9£116

Tue 20/1022:15 -

Nonstop1h 44m

Fri 23/1005:45 -

Nonstop1h 35m

Deal found 29/9£119

Fri 30/1022:19 -

Nonstop1h 40m

Mon 2/1118:05 -

1 stop4h 20m

Deal found 30/9£120

Tue 27/1008:40 -

Nonstop1h 39m

Mon 2/1105:30 -

Nonstop1h 40m

Deal found 28/9£121

Thu 5/1108:40 -

Nonstop1h 39m

Sat 7/1107:30 -

1 stop3h 58m

Deal found 29/9£121

Thu 29/1022:19 -

Nonstop1h 40m

Sat 31/1014:40 -

Nonstop1h 47m

Deal found 29/9£123

Wed 21/1015:09 -

Nonstop1h 50m

Fri 23/1005:45 -

Nonstop1h 35m

Deal found 28/9£125

Find flight deals from Dulles Intl to Boston

Round-trip from	£108
One-way from	£54
Popular in	June
Cheapest in	January
Average price	£280

United Airlines
15/1-18/1
1 total stop
5h 44m total
Washington, D.C. to Boston

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United Airlines
24/10-31/12
Nonstop
1h 45m total
Washington, D.C. to Boston

Search Deals

Highest demand for flights based on searches. 18% potential increase in price (£40 potential increase over avg. return price).

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Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).

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Average for round-trip flights in September 2026

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Boston that are best for you.

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Cheapest return flight

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Sat 7/11

08:37-13:31

1 stop4h 54m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£67

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Sat 24/10

08:33-12:43

1 stop4h 10m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£72

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Wed 23/12

08:25-12:10

1 stop3h 45m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£72

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Tue 27/10

22:19-23:59

Nonstop1h 40m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£78

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Thu 29/10

22:19-23:59

Nonstop1h 40m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£79

Fastest return journey

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Thu 5/11

08:40-10:19

Nonstop1h 39m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£89

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Fri 6/11

12:30-19:06

1 stop6h 36m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£95

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Sat 20/2

17:00-23:34

1 stop6h 34m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£95

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Tue 27/10

10:57-16:15

1 stop5h 18m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£95

Washington, D.C.Boston

IAD Washington, D.C. Dulles Intl - BOS Boston Logan Intl

IADBOS

Washington, D.C. Dulles Intl

Thu 19/11

08:40-10:19

Nonstop1h 39m

Boston Logan Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

£135

Flights are sorted by cheapest return flights first.

Deals found on 29/9

Showing 1-10 of 21 resultsSorted by cheapest first

Best time to book a flight from Dulles Intl to Boston

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

IAD-BOS

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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Delays

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

The best time to book flights from Washington, D.C. Dulles Intl Airport to Boston is 61 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of £161). Flying from Washington, D.C. Dulles Intl Airport to Boston in June is currently the most expensive (average of £320). 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 time of day to fly from IAD to BOS?

When flying from Washington, D.C. Dulles Intl Airport to Boston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to Boston?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Boston flights typically cost between £168 and £308 in January.
The cheapest return price found within the last 5 days was £108 on United Airlines (15 Jan–18 Jan).

Related info for your journey

What airport do you fly into for flights to Boston from Washington, D.C. Dulles Intl?
Most people fly into Boston Logan Intl (BOS) if they book a flight to Boston from Washington, D.C. Dulles Intl. On average, Logan Intl has 13 inbound flights from Washington, D.C. Dulles Intl per day from 0 airlines. Boston Logan Intl is conveniently located just 2.6 mi from Boston’s city center.
How long is the flight from Washington, D.C. Dulles Intl Airport to Boston?
Airlines like United Airlines fly from Washington, D.C. Dulles Intl Airport to Boston in about 3h 49m. The time it takes to get you to your destination can typically vary by up to . There are 411 mi between Washington, D.C. Dulles Intl Airport and Boston.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Boston?
Before booking your flight to Boston from Washington, D.C. Dulles Intl Airport, check out the most reliable airlines to get you to your destination on time: Egyptair (92%), ITA Airways (79%), Avianca( 79%).
Can I find deals for flights from Dulles Intl to Boston that include hotel bookings?
Yes. In addition to deals on Dulles Intl to Boston flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to Boston?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Boston.
Can I find deals for business class flights from Dulles Intl to Boston?
Yes. Cheapflights offers flight deals from Dulles Intl to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Boston?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of £161). Flying from Washington, D.C. Dulles Intl Airport to Boston in June is currently the most expensive (average of £320). 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.

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Cheapflights makes it easy to find Dulles Intl to Boston flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Boston?

Millions of users choose and trust Cheapflights to book the best flight deals from Dulles Intl to Boston for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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Can Cheapflights notify me if prices for flights from Dulles Intl to Boston become cheaper?

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Cheap flights from Washington, D.C. Dulles Intl Airport to Boston from £54

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Dulles Intl to Boston

Cheapest flights from Dulles Intl to BostonExplore the most affordable flight options available from Dulles Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Explore the most affordable flight options available from Dulles Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Best flights from Dulles Intl to BostonDiscover carefully curated flight deals from Dulles Intl to Boston that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Discover carefully curated flight deals from Dulles Intl to Boston that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Direct flights from Dulles Intl to BostonExplore direct flight options from Dulles Intl to Boston based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 September 2026.

Explore direct flight options from Dulles Intl to Boston based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 September 2026.

Last-minute flights from Dulles Intl to BostonDiscover last-minute flight deals from Dulles Intl to Boston. Data last updated 30 September 2026 and is based on user searches.

Discover last-minute flight deals from Dulles Intl to Boston. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Dulles Intl to BostonSearch for one-way flight options from Dulles Intl to Boston. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Search for one-way flight options from Dulles Intl to Boston. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

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Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Boston that are best for you.

Best time to book a flight from Dulles Intl to Boston

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

Cheapflights Insights

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

The best time to book flights from Washington, D.C. Dulles Intl Airport to Boston is 61 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

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

When flying from Washington, D.C. Dulles Intl Airport to Boston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to Boston?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Boston flights typically cost between £168 and £308 in January.The cheapest return price found within the last 5 days was £108 on United Airlines (15 Jan–18 Jan).

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

The most flights from IAD to BOS are scheduled on a Tuesday (19 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

How often are flights from Washington, D.C. to Boston delayed?

About 18% of weekly flights between Washington, D.C. and Boston have experienced delays in the past year, with the average delay time being 123 minutes.

What is the most punctual flight time for Washington, D.C. to Boston flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to Boston flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.

Related info for your journey

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

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

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

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

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

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

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

Travelling to a place near Boston?

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Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Boston?

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Can Cheapflights notify me if prices for flights from Dulles Intl to Boston become cheaper?

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Cheapest flights from Dulles Intl to Boston
Explore the most affordable flight options available from Dulles Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 September 2026.

Best flights from Dulles Intl to Boston
Discover carefully curated flight deals from Dulles Intl to Boston that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Direct flights from Dulles Intl to Boston
Explore direct flight options from Dulles Intl to Boston based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 September 2026.

Last-minute flights from Dulles Intl to Boston
Discover last-minute flight deals from Dulles Intl to Boston. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Dulles Intl to Boston
Search for one-way flight options from Dulles Intl to Boston. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Washington, D.C. Dulles Intl Airport to Boston flights typically cost between £168 and £308 in January.
The cheapest return price found within the last 5 days was £108 on United Airlines (15 Jan–18 Jan).