Cheap flights from London to Washington

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London to Washington flight comparison made easy

Below you can see the best fares for your route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from London to Washington by changing tabs
Quickest
Cheapest
Brussels Airlines
Brussels Airlines
17 Nov
LHR
09:20
London Heathrow airport
34h 59m
1 Stop
15:19
+1
IAD
Washington Dulles Intl airport
Brussels Airlines
18 Nov
IAD
12:55
Washington Dulles Intl airport
18h 10m
1 Stop
12:05
+1
LHR
London Heathrow airport
327 GBP
TAP AIR PORTUGAL
TAP AIR PORTUGAL
27 Nov
LHR
06:00
London Heathrow airport
19h 15m
1 Stop
20:15
IAD
Washington Dulles Intl airport
TAP AIR PORTUGAL
04 Dec
IAD
17:40
Washington Dulles Intl airport
11h 50m
1 Stop
10:30
+1
LHR
London Heathrow airport
327 GBP
Brussels Airlines
Brussels Airlines
17 Nov
LHR
09:20
London Heathrow airport
34h 59m
1 Stop
15:19
+1
IAD
Washington Dulles Intl airport
Brussels Airlines
18 Nov
IAD
12:55
Washington Dulles Intl airport
18h 10m
1 Stop
12:05
+1
LHR
London Heathrow airport
327 GBP
Icelandair
Icelandair
17 Sep
LGW
14:10
London Gatwick airport
10h 55m
1 Stop
20:05
IAD
Washington Dulles Intl airport
Icelandair
29 Oct
IAD
16:30
Washington Dulles Intl airport
10h 20m
1 Stop
06:50
+1
LGW
London Gatwick airport
426 GBP
KLM
KLM
05 Sep
LCY
10:25
London City airport
11h 10m
1 Stop
16:35
IAD
Washington Dulles Intl airport
KLM
10 Sep
IAD
13:45
Washington Dulles Intl airport
10h 05m
1 Stop
04:50
+1
LCY
London City airport
543 GBP
Aer Lingus
Aer Lingus
21 Nov
LGW
08:35
London Gatwick airport
12h 15m
1 Stop
15:50
IAD
Washington Dulles Intl airport
Aer Lingus
30 Nov
IAD
12:20
Washington Dulles Intl airport
9h 35m
1 Stop
02:55
+1
LGW
London Gatwick airport
451 GBP

How to get the cheapest flight from London to Washington

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 for your trip
WHAT IS THE CHEAPEST MONTH TO FLY TO WASHINGTON, D.C.?
February
The cheapest time of year to fly to Washington from London is February. The most expensive is July.
WHAT IS THE CHEAPEST DAY TO FLY TO WASHINGTON, D.C.?
Thursday
The cheapest day of the week is usually Thursday. The most expensive is usually Sunday.
WHEN IS THE CHEAPEST TIME TO FLY TO WASHINGTON, D.C.?
in the afternoon
London to Washington flights are approximately 108% more expensive at midday than in the afternoon
WHAT IS THE CHEAPEST AIRLINE THAT FLIES TO WASHINGTON, D.C.?
WOW air
WOW air and TAP AIR PORTUGAL are the most popular carriers operating from London to Washington
WHAT IS THE CHEAPEST ROUTE?
London Heathrow - Washington Dulles Intl
Fly from London Heathrow to Washington Dulles Intl for the best London - Washington flight prices
WHEN IS THE CHEAPEST TIME TO BOOK A FLIGHT TO WASHINGTON, D.C.?
60 days before
The cheapest time to buy a flight from London to Washington is approximately 60 days before departure
60
Days before departure
0

Flight information for London to Washington

Find info about flight duration, direct flights, and airports for your flight from London to Washington
Fastest flight time 8h 0m The fastest flight from London to Washington takes 8h 0m.
Direct flights Every day Direct flights go from London to Washington every day.
Airports in Washington 2 airports There are 2 airports near Washington: Washington Reagan-National (DCA), Washington Dulles Intl (IAD)

Alternative routes for London to Washington

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
London to Philadelphia
Fastest flight time
7h 55m
Cheapest price
304 GBP
London to Philadelphia
Fastest flight time
11h 25m
Cheapest price
329 GBP
Manchester to Washington
Fastest flight time
11h 00m
Cheapest price
329 GBP
London to Philadelphia
Fastest flight time
11h 20m
Cheapest price
340 GBP
Manchester to Philadelphia
Fastest flight time
7h 50m
Cheapest price
390 GBP
Birmingham to Philadelphia
Fastest flight time
12h 55m
Cheapest price
398 GBP
Birmingham to Washington
Fastest flight time
11h 50m
Cheapest price
448 GBP
Manchester to Washington
Fastest flight time
14h 04m
Cheapest price
477 GBP
London to Philadelphia
Fastest flight time
12h 00m
Cheapest price
482 GBP
London to Philadelphia
Fastest flight time
14h 05m
Cheapest price
487 GBP
Birmingham to Washington
Fastest flight time
14h 23m
Cheapest price
556 GBP
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*Flight prices to Washington are based on prices for economy tickets found by momondo users during searches within the last 72 hours. These prices may no longer be available.