Cheap Flights from Cambridge (CBG) to Washington (IAD)

Popular airlines from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD)

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Frequently asked questions

How much does a flight from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD) cost?
Get a cheap one-way flight or cheap return flight from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD)?
Traveling in is a good way to save, as it's the cheapest month for flights between CBG and IAD. You'll typically find the lowest fares during the off-season.
Which airlines fly direct from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD)?
While Cambridge (CBG) doesn't have any direct flights to Washington Dulles Intl. Airport (IAD), other airports have nonstop routes. Departing from Heathrow Airport (LHR) will get you to Washington without any layovers.
What is the cheapest airline that flies from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline that'll fly you from CBG to IAD, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD)?
You'll have to book a flight with a layover if you're traveling from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from CBG to IAD?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD)?
To avoid possible delays on the Cambridge (CBG) to Washington Dulles Intl. Airport (IAD) route, travel before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD) last-minute?
Waiting until just before your departure to book a ticket from CBG to IAD often results in higher prices. Although you may find some last-minute discounts, they aren't always guaranteed. Keep your travel plans flexible for a better chance of scoring a bargain.
Is it cheaper to book a CBG to IAD flight and hotel package?
You'll typically save money by securing a CBG to IAD flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've selected your preferred accommodations and flights, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Cambridge (CBG) to Washington Dulles Intl. Airport (IAD)?
Usually, it's possible to reschedule or cancel your CBG to IAD flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Cambridge
Destination airport
Washington Dulles Intl.
Distance
3675 mi

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Cambridge to Washington Flights

The cheapest times to fly from Cambridge to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Cambridge to Washington are during the month of . You can find some of the cheapest flights from Cambridge to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Cambridge to Washington

Sunday is one of the best days to book for cheap flights from Cambridge to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Cambridge to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Cambridge to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Cambridge to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Cambridge to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Cambridge to Washington Flights

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*Available to One Key members.