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

Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Boston is United Airlines. Our recent data shows that you can find tickets from as low as $144 on this airline. An additional option worth looking into is Frontier, starting at $198. United Airlines is 49% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Boston one-way?

The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $79. However, be on the lookout for offers from Allegiant Air and Frontier, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Boston for a low price.

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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

On average you can expect to pay $816 for a flight from Washington, D.C. Dulles Intl Airport to Boston. The cheapest flight overall is $103 while the most popular route, (Washington, D.C. Dulles Intl - Boston Logan Intl) is currently priced at $144.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to Boston on time: Republic Airways (100%), Egyptair (88%), Avianca (80%).

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

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

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

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Boston. Check prices with Cheapflights to find a great deal for your trip.

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

Due to multiple factors, expect to potentially pay more when booking in April. For low rates, January can be a great choice for travel to Boston. Flights to Boston from Washington, D.C. Dulles Intl Airport in January are about $201 on average during January, but can be found for as low as $67.

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

Boston Logan Intl (BOS), located 2.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Boston. 5 airlines have flights to Logan Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Boston Logan Intl should not be difficult; the airport handles an average of 9 inbound flights from Washington, D.C. Dulles Intl per day.

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 vacation 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.

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

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Boston Logan Intl are usually found in January or March, booked 54 days in advance, depart on a Wednesday or Thursday and return on a Friday

Cheap flight deals from Dulles Intl to Boston

Round-trip from	$144 (United Airlines)
One-way from	$79 (United Airlines)
Popular in	May
Cheapest in	January
Average price	$293
Good round-trip deal	$270 or less
Good one-way deal	$149 or less

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

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One-way flight from Washington, D.C. Dulles Intl to Boston Logan Intl

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Highest demand for flights based on searches. 7% potential increase in price ($24 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Boston Logan Intl.

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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Boston Logan Intl.

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Find flight deals from Dulles Intl to Boston

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 julho 31, 2025.

sáb 8/3010:18 pmIAD - BOS

Nonstop1h 39mUnited Airlines

qua 9/35:30 amBOS - IAD

Nonstop1h 40mUnited Airlines

Deal found 7/30

$144

sáb 8/95:59 pmIAD - BOS

1 stop6h 40mFrontier

sáb 8/166:00 amBOS - IAD

1 stop11h 14mFrontier

Deal found 7/31

$198

Best flights from Dulles Intl to Boston
Discover carefully curated flight deals from Dulles Intl to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julho 31, 2025.

sáb 8/3010:18 pmIAD - BOS

Nonstop1h 39mUnited Airlines

qua 9/35:30 amBOS - IAD

Nonstop1h 40mUnited Airlines

Deal found 7/30

$144

sáb 8/95:59 pmIAD - BOS

1 stop6h 40mFrontier

sáb 8/166:00 amBOS - IAD

1 stop11h 14mFrontier

Deal found 7/30

$198

Last-minute flights from Dulles Intl to Boston
Discover last-minute flight deals from Dulles Intl to Boston. Data last updated julho 31, 2025 and is based on user searches.

qui 8/710:18 pmIAD - BOS

Nonstop1h 41mUnited Airlines

sex 9/55:30 amBOS - IAD

Nonstop1h 40mUnited Airlines

Deal found 7/30

$223

qui 8/79:05 pmIAD - BOS

1 stop13h 47mAllegiant Air

sex 9/58:59 amBOS - IAD

1 stop6h 54mAllegiant Air

Deal found 7/30

$314

sex 8/812:12 pmIAD - BOS

1 stop3h 58mDelta

qua 8/135:15 amBOS - IAD

1 stop6h 17mDelta

Deal found 7/30

$298

sáb 8/95:59 pmIAD - BOS

1 stop6h 40mFrontier

sáb 8/166:00 amBOS - IAD

1 stop11h 14mFrontier

Deal found 7/30

$198

dom 8/1011:58 amIAD - BOS

2 stops21h 00mMultiple Airlines

qui 8/1411:31 amBOS - IAD

1 stop8h 51mMultiple Airlines

Deal found 7/31

$241

dom 8/106:34 amIAD - BOS

1 stop4h 31mAmerican Airlines

qua 8/206:21 pmBOS - IAD

1 stop4h 35mAmerican Airlines

Deal found 7/30

$276

sáb 8/3010:18 pmIAD - BOS

Nonstop1h 39mUnited Airlines

qua 9/35:30 amBOS - IAD

Nonstop1h 40mUnited Airlines

Deal found 7/30

$144

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 julho 31, 2025.

qua 9/36:20 amIAD - BOS

1 stop3h 17mUnited Airlines

Deal found 7/28

$79

seg 10/209:36 pmIAD - BOS

1 stop12h 35mAllegiant Air

Deal found 7/30

$90

sex 8/155:59 pmIAD - BOS

1 stop6h 39mFrontier

Deal found 7/28

$102

seg 9/85:40 pmIAD - BOS

3 stops20h 08mMultiple Airlines

Deal found 7/30

$123

sáb 9/612:13 pmIAD - BOS

1 stop3h 47mDelta

Deal found 7/29

$124

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.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

sáb 8/30

10:18 pm-11:57 pm

Nonstop1h 39m

Boston Logan Intl

qua 9/3

5:30 am-7:10 am

Nonstop1h 40m

$144

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

sáb 8/9

5:59 pm-12:39 am

1 stop6h 40m

Boston Logan Intl

sáb 8/16

6:00 am-5:14 pm

1 stop11h 14m

$198

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

qua 9/3

6:20 am-9:37 am

1 stop3h 17m

$79

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

seg 10/20

9:36 pm-10:11 am

1 stop12h 35m

$90

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

sex 8/15

5:59 pm-12:38 am

1 stop6h 39m

$102

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

seg 9/8

5:40 pm-1:48 pm

3 stops20h 08m

$123

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

sáb 9/6

12:13 pm-4:00 pm

1 stop3h 47m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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

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

Airports

IAD

For a smooth departure, use the Aerotrain to navigate between terminals, but allow extra time for long walks and escalators.

BOS

At BOS, rideshares like Uber and Lyft are convenient, but allow extra time for traffic and navigating pickup points.

Our travel experts

Paul Rubio

Expert on BOS

Ramsey Qubein

Expert on IAD

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.

Estimated round-trip 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

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Boston, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $218). Flying from Washington, D.C. Dulles Intl Airport to Boston in July is currently the most expensive (average of $311). 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 fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 32% versus a flight in the afternoon.

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

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

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

The most flights from IAD to BOS are scheduled on a Thursday (15 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (5 on average).

Reviews of airlines servicing Boston

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

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,981 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,900 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Allegiant Air

7.2

Good

702 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Frontier

5.9

Fair

3,239 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to Boston from Washington, D.C. Dulles Intl?
Boston Logan Intl (BOS), located 2.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Boston. 5 airlines have flights to Logan Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Boston Logan Intl should not be difficult; the airport handles an average of 9 inbound flights from Washington, D.C. Dulles Intl per day.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Boston round-trip?
Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Boston is United Airlines. Our recent data shows that you can find tickets from as low as $144 on this airline. An additional option worth looking into is Frontier, starting at $198. United Airlines is 49% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Boston one-way?
The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $79. However, be on the lookout for offers from Allegiant Air and Frontier, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Boston for a low price.
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Boston?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to Boston on time: Republic Airways (100%), Egyptair (88%), Avianca (80%).
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Boston?
On average you can expect to pay $816 for a flight from Washington, D.C. Dulles Intl Airport to Boston. The cheapest flight overall is $103 while the most popular route, (Washington, D.C. Dulles Intl - Boston Logan Intl) is currently priced at $144.
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 vacation 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 $218). Flying from Washington, D.C. Dulles Intl Airport to Boston in July is currently the most expensive (average of $311). 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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Top 5 airlines flying from Dulles Intl to Boston

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest$63	Average$208	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$76	Average$137	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$78	Average$218	FlexibilityNo cancel fee	On-timeN/A
Frontier	Cheapest$116	Average$258	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$148	Average$292	FlexibilityNo cancel fee	On-time69%

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

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Boston with Cheapflights

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3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Boston Logan Intl are usually found in January or March, booked 54 days in advance, depart on a Wednesday or Thursday and return on a Friday

Cheap flight deals from Dulles Intl to Boston

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find 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 julho 31, 2025.

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 julho 31, 2025.

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.

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

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

Airports

IAD

BOS

Our travel experts

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Boston. Price data was last updated on July 25, 2025.

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?

Find hourly flight availability from Dulles Intl to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julho 31, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Boston. Price data was last updated on July 27, 2025.

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

Explore weekly flight availability from Dulles Intl to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated julho 31, 2025.

Reviews of airlines servicing Boston

Get a feel of what it's like to fly with Delta, United Airlines, and Allegiant Air from Washington, D.C. Dulles Intl Airport to Boston 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 Dulles Intl to Boston. 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 into for flights to Boston from Washington, D.C. Dulles Intl?

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

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Boston one-way?

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

What are the cheapest flights 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?

Traveling to a place near Boston?

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Alternative routes for Dulles Intl to Boston

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Top 5 airlines flying from Dulles Intl to Boston

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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 julho 31, 2025.