Featured airlines
- Plan, book, fly with confidence
- Be in the knowGet alerts if flight prices drop or rise*
- Book smarterSave up to 30% on select hotels after you book a flight*
Frequently asked questions
Travel information
Travel information
Origin airport | Washington Dulles Intl. |
Destination airport | Cambridge |
Distance | 3675 mi |
Book with confidence
Book with confidence
The cheapest times to fly from Washington to Cambridge
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 Washington to Cambridge are during the month of . You can find some of the cheapest flights from Washington to Cambridge with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Washington to Cambridge
Sunday is one of the best days to book for cheap flights from Washington to Cambridge: 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 Washington to Cambridge
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 Washington to Cambridge 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 Washington to Cambridge 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 Washington to Cambridge 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.
Be inspired and discover more with Expedia
Be inspired and discover more with Expedia
Flights
- Flights to Inverness
- Flights to London
- Flights to Leeds
- Flights to Liverpool
- Flights to Bath
- Flights to Manchester
- Flights to Birmingham
- Flights to Belfast
- Flights to Blackpool
- Flights to Chester
- Flights to Brighton
- Flights to Newcastle-upon-Tyne
- Flights to Glasgow
- Flights to Southampton
- Flights to Cardiff
- Flights to Oxford
- Flights to Cambridge
- Flights to York
- Flights to Edinburgh
- Flights to Bristol
- Alaska Airlines
- Air Canada
- avianca
- Delta
- Emirates
- KLM
- Etihad Airways
- Qatar Airways
- Swiss International Air Lines
- British Airways
- United
- Frontier Airlines
- Lufthansa
- Air France
- American Airlines
- Turkish Airlines
- Flights from Washington (IAD) to Fort Lauderdale (FLL)
- Flights from Cairo (CAI) to Cambridge (CBG)
- Flights from Colombo (CMB) to Cambridge (CBG)
- Flights from Richmond (RIC) to Atlanta (ATL)
- Flights from Washington (IAD) to Delhi (DEL)
- Flights from Washington (IAD) to Hyderabad (HYD)
- Flights from Washington (IAD) to Tokyo (NRT)
- Flights from Richmond (RIC) to Orlando (MCO)
- Flights from Norfolk (ORF) to Orlando (MCO)
- Flights from Washington (IAD) to Punta Cana (PUJ)
- Flights from Washington (IAD) to Tampa (TPA)
- Flights from Washington (IAD) to Dallas (DFW)
- Flights from London (LHR) to Paris (CDG)
- Flights from Washington (IAD) to Paris (CDG)
- Flights from Washington (IAD) to Los Angeles (LAX)
- Flights from Orlando (MCO) to London (LGW)
- Flights from Atlanta (ATL) to London (LGW)
- Flights from Norfolk (ORF) to Las Vegas (LAS)
- Flights from Richmond (RIC) to Las Vegas (LAS)
- Flights from Washington (IAD) to Houston (IAH)
- Flights from Detroit (DTW) to London (LHR)
- Flights from San Francisco (SFO) to London (LHR)
- Flights from Miami (MIA) to London (LHR)
- Flights from Los Angeles (LAX) to London (LHR)
- Flights from Harare (HRE) to London (LHR)
- Flights from Accra (ACC) to London (LHR)
- Flights from Denver (DEN) to London (LHR)
- Flights from Lagos (LOS) to London (LHR)
- Flights from Minneapolis (MSP) to London (LHR)
- Flights from Port of Spain (POS) to London (LHR)
- Flights from Phoenix (PHX) to London (LHR)
- Flights from Newark Liberty Intl. Airport (EWR) to London (LHR)
- Flights from Nairobi (NBO) to London (LHR)
- Flights from Houston (IAH) to London (LHR)
- Flights from Boston (BOS) to London (LHR)
- Flights from Raleigh (RDU) to London (LHR)
- Flights from Chicago (ORD) to London (LHR)
- Flights from Washington (IAD) to London (LHR)
- Flights from New York (JFK) to London (LHR)
- Flights from Baltimore (BWI) to London (LHR)
- Flights from Seattle (SEA) to London (LHR)
- Flights from Washington (IAD) to Guatemala City (GUA)
- Flights from Richmond (RIC) to Miami (MIA)
- Flights from Washington (IAD) to Miami (MIA)
- United Washington (IAD) to Fort Lauderdale (FLL) flights
- Etihad Airways Washington (IAD) to Delhi (DEL) flights
- Air Canada Washington (IAD) to Tokyo (NRT) flights
- Frontier Airlines Washington (IAD) to Orlando (MCO) flights
- United Washington (IAD) to Dallas (DFW) flights
- United Washington (IAD) to Los Angeles (LAX) flights
- United Washington (IAD) to Houston (IAH) flights
- avianca Washington (IAD) to Guatemala City (GUA) flights
- United Washington (IAD) to Miami (MIA) flights
- Flights from Hagerstown Regional
- Flights from Tipton
- Flights from College Park
- Flights from Easton - Newnam
- Flights from Martin State
- Flights from Manassas Regional
- Flights from Baltimore Washington Intl. Thurgood Marshall
- Flights from Eastern West Virginia Regional
- Flights from Ronald Reagan Washington National
- Flights from Montgomery County Airpark