Cheap flights from Washington, D.C. to London from $196

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to London departing on 3/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Washington, D.C. to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
8:30 pm - 2:40 pm
IAD
-
LGW
13h 10m
1 stop
Icelandair Logo
3:40 pm - 10:15 pm
LGW
-
IAD
11h 35m
1 stop
$570Icelandair
Fri, Apr 24 - Fri, May 8
Scandinavian Airlines Logo
8:20 pm - 9:20 am
IAD
-
LHR
32h 00m
1 stop
Scandinavian Airlines Logo
7:05 am - 5:00 pm
LHR
-
IAD
14h 55m
2 stops
$570Scandinavian Airlines
Mon, Apr 20 - Thu, Apr 23
Virgin Atlantic Logo
7:05 pm - 8:50 am
IAD
-
LCY
9h 45m
1 stop
Virgin Atlantic Logo
9:20 am - 3:35 pm
LCY
-
IAD
11h 15m
1 stop
$645Virgin Atlantic
Sun, Mar 22 - Tue, Mar 31
Virgin Atlantic Logo
7:05 pm - 5:20 pm
IAD
-
LCY
18h 15m
1 stop
Virgin Atlantic Logo
8:25 am - 3:35 pm
LCY
-
IAD
12h 10m
1 stop
$646Virgin Atlantic
Sun, Mar 22 - Tue, Mar 31
British Airways Logo
2:33 pm - 7:30 am
DCA
-
LGW
12h 57m
1 stop
British Airways Logo
10:45 am - 11:34 pm
LGW
-
DCA
17h 49m
1 stop
$652British Airways
Tue, Mar 24 - Tue, Apr 14
Delta Logo
10:00 am - 6:50 am
DCA
-
LHR
16h 50m
1 stop
Delta Logo
11:45 am - 11:44 pm
LHR
-
DCA
15h 59m
2 stops
$652Delta
Mon, Mar 16 - Wed, Mar 25
American Airlines Logo
2:36 pm - 8:40 am
DCA
-
LGW
13h 04m
1 stop
American Airlines Logo
12:20 pm - 9:23 pm
LGW
-
DCA
14h 03m
1 stop
$657American Airlines
Tue, Apr 21 - Thu, Apr 30
Delta Logo
5:30 pm - 10:15 am
DCA
-
LHR
12h 45m
2 stops
Delta Logo
11:45 am - 11:44 pm
LHR
-
DCA
15h 59m
2 stops
$657Delta
Mon, Mar 16 - Wed, Mar 25
British Airways Logo
11:17 am - 10:40 am
DCA
-
LGW
18h 23m
1 stop
British Airways Logo
2:30 pm - 8:59 pm
LGW
-
DCA
35h 29m
1 stop
$658British Airways
Tue, May 5 - Tue, May 12
American Airlines Logo
2:36 pm - 8:40 am
DCA
-
LGW
13h 04m
1 stop
American Airlines Logo
12:20 pm - 11:59 pm
LGW
-
DCA
16h 39m
2 stops
$662American Airlines
Tue, Apr 21 - Thu, Apr 30

United Airlines flights from Washington, D.C. to Cambridge

Our best United Airlines deals on Washington, D.C. to Cambridge flight tickets
United Airlines
Mar 16
DCA6:00 amWashington, D.C. Reagan-National
21h 10m
1 stop
LHR7:10 amLondon Heathrow
Mar 23
LHR11:05 amLondon Heathrow
33h 27m
2 stops
DCA4:32 pmWashington, D.C. Reagan-National
$664
United Airlines
Mar 22
DCA6:00 pmWashington, D.C. Reagan-National
10h 25m
1 stop
LHR8:25 amLondon Heathrow
Mar 31
LHR9:30 amLondon Heathrow
10h 54m
1 stop
DCA3:24 pmWashington, D.C. Reagan-National
$666
United Airlines
Mar 17
DCA7:00 amWashington, D.C. Reagan-National
10h 20m
1 stop
LHR9:20 pmLondon Heathrow
Mar 25
LHR8:00 amLondon Heathrow
11h 23m
1 stop
DCA3:23 pmWashington, D.C. Reagan-National
$668

Icelandair flights from Washington, D.C. to Cambridge

Our best Icelandair deals on Washington, D.C. to Cambridge flight tickets
Icelandair
Apr 24
IAD8:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
LGW2:40 pmLondon Gatwick
May 8
LGW3:40 pmLondon Gatwick
11h 35m
1 stop
IAD10:15 pmWashington, D.C. Dulles Intl
$570
Icelandair
Apr 29
IAD8:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
LGW2:40 pmLondon Gatwick
May 13
LGW3:40 pmLondon Gatwick
11h 35m
1 stop
IAD10:15 pmWashington, D.C. Dulles Intl
$571
Icelandair
Apr 29
IAD8:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
LGW2:40 pmLondon Gatwick
May 9
LGW3:40 pmLondon Gatwick
32h 40m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
$573

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Cambridge that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 4, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Cambridge that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 4/24

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Fri 5/8

3:40 pm-10:15 pm

1 stop11h 35m

$570

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 4/20

8:20 pm-9:20 am

1 stop32h 00m

London Heathrow

Thu 4/23

7:05 am-5:00 pm

2 stops14h 55m

$570

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 3/22

7:05 pm-8:50 am

1 stop9h 45m

London City

Tue 3/31

9:20 am-3:35 pm

1 stop11h 15m

$645

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 3/22

7:05 pm-5:20 pm

1 stop18h 15m

London City

Tue 3/31

8:25 am-3:35 pm

1 stop12h 10m

$646

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Tue 3/24

2:33 pm-7:30 am

1 stop12h 57m

London Gatwick

Tue 4/14

10:45 am-11:34 pm

1 stop17h 49m

$652

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 3/16

10:00 am-6:50 am

1 stop16h 50m

London Heathrow

Wed 3/25

11:45 am-11:44 pm

2 stops15h 59m

$652

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Tue 4/21

2:36 pm-8:40 am

1 stop13h 04m

London Gatwick

Thu 4/30

12:20 pm-9:23 pm

1 stop14h 03m

$657

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 3/16

5:30 pm-10:15 am

2 stops12h 45m

London Heathrow

Wed 3/25

11:45 am-11:44 pm

2 stops15h 59m

$657

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Tue 5/5

11:17 am-10:40 am

1 stop18h 23m

London Gatwick

Tue 5/12

2:30 pm-8:59 pm

1 stop35h 29m

$658

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Tue 4/21

2:36 pm-8:40 am

1 stop13h 04m

London Gatwick

Thu 4/30

12:20 pm-11:59 pm

2 stops16h 39m

$662

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. to Cambridge

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. and Cambridge?

What is the cheapest month to fly to Cambridge?

In general, September is the cheapest month to fly from Washington, D.C. to Cambridge. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $630. If you’re not able to fly to Cambridge in September, then January is your next best option. Flight prices from Washington, D.C. to Cambridge during January average around $640.

What is the cheapest Washington, D.C. to Cambridge flight route?

Fly from Baltimore/Washington to London Heathrow for the best Washington, D.C. - Cambridge flight prices

How far in advance should I book a flight to Cambridge?

You are more likely to see cheaper flights to Cambridge from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Cambridge for around $765 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cambridge from Washington, D.C. for as low as $711 on momondo.

What cabin class options are available on Washington, D.C. to Cambridge flights?

There are 4 cabin classes available to choose from on Washington, D.C. to Cambridge flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. to Cambridge flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to Cambridge.

Cheap Washington, D.C. to Cambridge flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Cambridge

Fastest flight time

7h 05m

Direct flights

Every day

Airports in Cambridge

6 airports
The fastest flight from Washington, D.C. to Cambridge takes 7h 05m
Direct flights go from Washington, D.C. to Cambridge every day.
There are 6 airports in Cambridge. From Washington, D.C. there are direct flights to London Heathrow (LHR).
  • When did momondo last update prices for flights from Washington, D.C. to Cambridge?

    Prices for flights from Washington, D.C. to Cambridge are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. to Cambridge?

  • How old do you have to be to fly from Washington, D.C. to Cambridge?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Cambridge.

  • What documentation or ID do you need to fly to Cambridge?

    The travel and health documents you'll need for your trip to Cambridge may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Cambridge. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. to Cambridge?

Best airlines flying from Washington, D.C. to Cambridge

Compare and see reviews for airlines that fly from Washington, D.C. to Cambridge with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $31Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
PLAYPriceFrom $408Free CancellationRating
7.0
103 reviews
Search PLAY flights
TAP AIR PORTUGALPriceFrom $411Free CancellationRating
7.1
2,155 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom $415Free CancellationRating
7.1
617 reviews
Search Icelandair flights
Air FrancePriceFrom $442Free CancellationRating
7.4
1,542 reviews
Search Air France flights
Scandinavian AirlinesPriceFrom $454Free CancellationRating
7.3
1,703 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $462Free CancellationRating
7.4
9,383 reviews
Search United Airlines flights
KLMPriceFrom $488Free CancellationRating
7.8
1,463 reviews
Search KLM flights
Virgin AtlanticPriceFrom $497Free CancellationRating
7.5
680 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $497Free CancellationRating
7.1
11,380 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Cambridge?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Cambridge. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Cambridge with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Cambridge on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Cambridge?

momondo helps you find the best flight between Washington, D.C. and Cambridge by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Cambridge right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Cambridge now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Cambridge and let you know when they change.

An easier way to manage your Cambridge trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 4/3
Fri 4/10

Find better results for your trip $[0, preposition:'to ']$[0, article:'to ']$[0, place:'to']

Popular cities $[0, preposition:'in ']$[0, article:'in ']$[0, place:'in']

Popular flights according to clicks in the last 7 days on momondo