$221 Find Cheap Flights from Washington, D.C. to Cambridge - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Cambridge departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$619
Multiple Airlines
Tue 9/15Tue 9/29
IAD - LTN • 2 stops
Cheapest non-stop
$711
Typical prices: $665-$876
British Airways
Sun 10/25Wed 11/4
BWI - LHR • Non-stop
Arrival airport
You can't fly directly to Cambridge. It is served by London (LON), located 49.3 miles from Cambridge.
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Flight Deals

Cheap Flights from Washington, D.C. to Cambridge (WAS-LON)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Cambridge that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Cambridge

Tue, Sep 15 - Tue, Sep 29
Multiple Airlines Logo
10:35 pm - 11:45 pmIAD  Washington, D.C. Dulles Intl-LTN London Luton
20h 10m2 stops Lisbon Humberto Delgado Madrid Barajas
Multiple Airlines Logo
1:40 pm - 3:10 pmLTN  London Luton-IAD Washington, D.C. Dulles Intl
30h 30m2 stops Madrid Barajas Lisbon Humberto Delgado
$619Multiple Airlines
Mon, Sep 21 - Tue, Sep 29
TAP AIR PORTUGAL Logo
10:35 pm - 3:35 pmIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
12h 00m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
4:25 pm - 3:10 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
27h 45m1 stop Lisbon Humberto Delgado
$619TAP AIR PORTUGAL
Tue, Sep 15 - Tue, Sep 22
TAP AIR PORTUGAL Logo
10:35 pm - 10:55 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
19h 20m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
7:50 pm - 3:10 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
24h 20m1 stop Lisbon Humberto Delgado
$620TAP AIR PORTUGAL
Mon, Sep 21 - Tue, Sep 29
Multiple Airlines Logo
5:40 pm - 2:05 pmIAD  Washington, D.C. Dulles Intl-LTN London Luton
15h 25m2 stops Lisbon Humberto Delgado Madrid Barajas
Multiple Airlines Logo
1:40 pm - 8:35 pmLTN  London Luton-IAD Washington, D.C. Dulles Intl
35h 55m2 stops Madrid Barajas Lisbon Humberto Delgado
$621Multiple Airlines
Thu, Oct 1 - Sun, Oct 4
Scandinavian Airlines Logo
8:20 pm - 9:20 amIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
32h 00m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
6:40 am - 5:00 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
15h 20m2 stops Stockholm Arlanda Kastrup Copenhagen
$625Scandinavian Airlines
Thu, Nov 12 - Mon, Nov 16
Scandinavian Airlines Logo
8:30 pm - 7:55 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
18h 25m2 stops Kastrup Copenhagen Stockholm Arlanda
Scandinavian Airlines Logo
6:40 am - 5:15 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
15h 35m2 stops Stockholm Arlanda Kastrup Copenhagen
$628Scandinavian Airlines
Tue, Nov 10 - Sun, Nov 15
Icelandair Logo
7:40 pm - 10:55 amIAD  Washington, D.C. Dulles Intl-LGW London Gatwick
10h 15m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:55 am - 6:30 pmLGW  London Gatwick-IAD Washington, D.C. Dulles Intl
11h 35m1 stop Reykjavik Keflavik Intl
$641Icelandair
Sun, Nov 1 - Sun, Nov 8
Icelandair Logo
7:40 pm - 10:50 amIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
10h 10m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 pm - 6:30 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
11h 15m1 stop Reykjavik Keflavik Intl
$642Icelandair
Thu, Jan 14 - Mon, Jan 18
JetBlue Logo
6:00 am - 8:52 pmDCA  Washington, D.C. Reagan-National-LHR London Heathrow
9h 52m1 stop New York John F Kennedy Intl
JetBlue Logo
12:20 pm - 10:59 pmLHR  London Heathrow-DCA Washington, D.C. Reagan-National
15h 39m1 stop New York John F Kennedy Intl
$697JetBlue
Mon, Sep 21 - Tue, Sep 29
JetBlue Logo
1:15 pm - 6:30 amDCA  Washington, D.C. Reagan-National-LHR London Heathrow
12h 15m1 stop Boston Logan Intl
JetBlue Logo
8:15 am - 10:59 pmLHR  London Heathrow-DCA Washington, D.C. Reagan-National
19h 44m1 stop New York John F Kennedy Intl
$785JetBlue
Useful Info

Good to know

Cheapest flight

$221
Flight from Baltimore to London Gatwick Airport

When to book flights from Washington, D.C. to Cambridge

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Cambridge based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Washington, D.C. to Cambridge: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Washington, D.C. to Cambridge 
DeeFlew with United Airlines-Feb 2025
For me the best route to LHR is the late night departure on UAL. The flight is often roughly 6.5 hours so I skip dinner, use an eye mask and earplugs and try to sleep.
EllenFlew with British Airways-Oct 2024
Do not check your bag if at all possible, especially if you have a connecting flight. Your bag will not make it.
CraigFlew with United Airlines-Jun 2024
Get to beginning of boarding group early. Bring as little on board as possible due to small overhead bin space.

FAQs for booking flights from Washington, D.C. to Cambridge

  • Which airports will I be using when flying from Washington, D.C. to Cambridge?

    When flying out of Washington, D.C. you’ll be using one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. Cambridge does not have its own airport so you’ll be flying into nearby London All airports airport, which is 49.3 mi away.

  • What’s the cheapest day of the week to fly between Washington, D.C. and Cambridge?

    Consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Fridays and the most expensive ones on Sundays.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Cambridge?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Cambridge.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Cambridge?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cambridge from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Cambridge?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Cambridge with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Cambridge?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Cambridge from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Washington, D.C. to Cambridge?

    In the last 5 days, the cheapest one-way ticket between Washington, D.C. and Cambridge found on KAYAK was with TAP AIR PORTUGAL for $219. TAP AIR PORTUGAL offered a round-trip connection from $309 and Virgin Atlantic from $374.

Top tips for finding cheap flights from Washington, D.C. to Cambridge

  • There is no airport in Cambridge. Instead, you’ll be flying into London All airports when flying between Washington, D.C. and Cambridge.
  • The cheapest flight from Washington, D.C. to Cambridge was found 52 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 May, June and July. The cheapest month to fly is January.

Reviews of the top 5 airlines serving Washington, D.C. to Cambridge

 
Need help choosing which airline to fly with from Washington, D.C. to Cambridge? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Virgin AtlanticOverall score based on 694 reviews
8.1Crew
7.3Comfort
7.5Entertainment
6.9Food
7.7Boarding
Airline reviews

Check in at the desk was very slow pus Security, although not Virgin issue at JFK was a nightmare. 50 minuet wait no time to explore airport and get last minuet gifts. total wait 1.5hours

6.0 GoodAnonymous, Jul 2026
Read more Virgin Atlantic reviews

Check in at the desk was very slow pus Security, although not Virgin issue at JFK was a nightmare. 50 minuet wait no time to explore airport and get last minuet gifts. total wait 1.5hours

Great staff great experience, made a 2 hour delay very bearable

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

The delay was an issue. Other than that. Every thing good

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

1. Everything was satisfactory concerning the flight. 2. Can't think of what could be better right now.

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Worst service- attendants dont want to help and sat us in front of bathroom

We sat on the hot plane for ours with very conflicting messages. Some (most?) of this may be due to the flight control staff, but we were also repeatedly getting "we are leaving"/"we are not" messages. It was very uncomfortable

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

UK Based crew was great. Very friendly and quick. The seats are just too tight and not comfortable. The plane appeared quite old. Food is better on other non-USA based airlines.

Disorganized boarding. Mandatory to gate check bags. Curt flight staff. No space for cabin bag, even when I was in first class.

Patrons with larger bags were asked to check the bags when boarding. Seems like the most effective, and least costly way, way to successfully use the cramped space.

They cancelled our flight two times after rebooking us for a later flight. We never got on the plane. We found another solution by driving.

Mostly great. Only issue was with the WiFi. Halfway through the flight it was spotty and I was unable to work as I planned. This impacted my work products as I am traveling for business and it was an unexpected hindrance which was inconvenient. Flight here was amazing. For a 5 hour flight something more than a Biscoff would be nice but I’m just swinging at windmills I guess…

Delayed boarding because a flight attendant couldn't find the gate...sat on the plane for over an hour at the gate because AA couldn't get one of the planes behind us to move

The seats were extremely cramped, with very little legroom or personal space. There was no room left in the overhead bins for a backpack, and the space under the seat in front was so limited that I could barely fit my bag underneath. Overall, the seating arrangement felt very uncomfortable and overcrowded.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

The small flights with Valet Luggage has a poor service

Overall a good experience, however Wifi was not working on the flight.

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

The WiFi wasn’t working, so no one could watch any entertainment for 5 hours. The plane also was delayed and did not leave, nor did the staff prioritize those with connecting flights to de-board first. Everyone with a connecting flight to Munich missed their flight by 5 minutes. Then the next flight to Munich was 14 hours later. The airport could not compensate us because the closest hotel was about 2 hours away. This did not seem like the truth. I was not pleased with this traveling experience.

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Screen didn't work, and neither did the button to tilt the seat even though the seat was comfortable

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

The flight was delayed and as a consequence we missed our connecting flight. Were stuck for another 6h in Reykyavik. Appreciated that we got a generous food voucher at least. Would have liked to see more information upon arrival including a person waiting for connecting flight travellers and informing already that we will not catch the flight and directing us to the office dealing with the matter; unfortunately that didnt happen and we hence first needed to find out whether flight had indeed left already and then locate the adequate office to help us with booking us on the next connecting flight. Also my suitcase broke and it is not clear whether it is happened on the leg with Iceland Air from DC to Reykyavik or on the leg with Lufthansa from Reykyavik to Frankfurt. Finally, understood that it is a low cost company but at least provision of earplugs for free would have been nice, instead of making them buy.

Had a screaming child next to us. Not the airline’s fault but still annoying.

Seats are way too much now with these new airplanes especially long flights like we had. I was 7 month pregnant and in a lot of discomfort due to small seats.

My biggest problem was the flight from KEF to DUB was delayed, which caused me to miss my connecting flight in DUB and we were forced into an unplanned 10-hour layover in DUB. Crew and boarding staff were all very friendly but this was a real inconvenience and especially uncomfortable for my disabled wife.

The seat size was more like a domestic than an international flight. In fact, i would compare the ammenities, quality and service to a short hall ryan air flight, which was unexpected for an international flight. The plane was extremely hot so sleeping was difficult. My biggest complaint was that they are very strict on carry on luggage only allowing it to weigh 10kg/22lb. I try to limit myself to a carryon so i don't have to mess with bagage claim, but the wieght restriction made it impossible. I have never had a carry on weight restriction (at least enforced) on an international flight. Will not be including them in future searches.

Horrible… I was downgraded without notice, had to sit in economy and given my back injury was in pain most of the journey. I expect to be reimbursed for this inconvenience and after my return flight home, I never plan to fly with British Airways again.

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

I enjoyed the comfort of Premium Economy. The Purser on London-Nairobi was a little testy, snappish in his tone. I understand stressed, tired, etc but his tone in addressing passengers I found wanting.

The flight was delayed twice and because of that, we missed our connecting flight. British Airways then attempted to put us on the last flight to Milan from London which would have kept us in the airport for 12 hours. We had to speak to several levels of bureaucracy until BA management let us fly on a flight that only kept us in the airport for two hours. If there was an earlier flight, why weren’t we put on that flight from the start? Unacceptable behavior from what was once my favorite carrier.

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

Nice flight, attentive crew, soft landing by the Pilot,, comfortable seat.

Service was very good. Because I use a cane, I was allowed to use Priority Boarding. Biggest problem was extremely limited leg room in Economy class seats. For airplane food, it was alright.

Great job notifying of 30 minute delay in departure. Fabulous job making up for the time and arriving as scheduled. Air travel is just no fun anymore with the extreme overcrowding, and someone needs to come up with an innovative plan for loading and unloading passengers (load all window seats first, middle seats second, aisle seats last?). Great job getting the luggage on the carousel in record time!

One frustration after another. No gate personnel until very close to departure. Boarding procedure was chaos. Plane was dirty from previous transatlantic flight. Entertainment system not operational. Gate change for connecting flight which required another round of security clearance, almost causing a missed flight. The final blow was lost baggage upon arrival.

Nothing. BA flight was late. Missed connection and lost luggage. A disaster.

Everything you need to know for your flight from Washington, D.C. to Cambridge

Complete your trip to Cambridge with a hotel stay or car rental