BA's Club Suite offers private pods with a door, enhancing comfort on long-haul flights.
BA's World Traveller Plus offers extra seat width and legroom, ideal for long-haul comfort.
Round-trip from | $661 (Air Canada) |
---|---|
One-way from | $297 (Kiwi.com) |
Popular in | August |
Cheapest in | February |
Average price | $871 |
Good round-trip deal | $747 or less |
Good one-way deal | $649 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Tue 8/26
10:30 am-9:01 pm
2 stops15h 31m
Washington, D.C. Dulles Intl
Sun 9/7
2:25 pm-9:35 am
2 stops14h 10m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Fri 10/10
6:00 am-4:10 pm
2 stops15h 10m
Washington, D.C. Dulles Intl
Tue 10/14
2:25 pm-9:35 am
2 stops14h 10m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Thu 8/21
9:25 pm-7:20 pm
1 stop26h 55m
Washington, D.C. Dulles Intl
Mon 3/9
8:40 pm-7:30 pm
1 stop18h 50m
LondonWashington, D.C.
LHR - DCA
LHRDCA
London Heathrow
Tue 11/4
11:25 am-10:33 pm
2 stops16h 08m
Washington, D.C. Reagan-National
Thu 11/13
12:56 pm-8:35 am
1 stop14h 39m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Thu 8/21
5:00 pm-8:10 pm
Nonstop8h 10m
Washington, D.C. Dulles Intl
Tue 9/2
10:40 pm-11:05 am
Nonstop7h 25m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Thu 9/4
12:15 pm-3:30 pm
Nonstop8h 15m
Washington, D.C. Dulles Intl
Mon 9/8
6:40 pm-6:55 am
Nonstop7h 15m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Tue 8/5
12:35 pm-4:00 pm
Nonstop8h 25m
Washington, D.C. Dulles Intl
Mon 9/15
5:50 pm-6:20 am
Nonstop7h 30m
LondonWashington, D.C.
LHR - DCA
LHRDCA
London Heathrow
Fri 8/22
2:05 pm-9:48 pm
1 stop12h 43m
Washington, D.C. Reagan-National
Wed 9/3
3:00 pm-5:55 am
1 stop9h 55m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Sun 9/7
7:30 pm-7:59 pm
1 stop29h 29m
Washington, D.C. Dulles Intl
Thu 9/18
10:05 pm-9:35 am
2 stops54h 30m
LondonWashington, D.C.
LHR - DCA
LHRDCA
London Heathrow
Tue 9/16
9:30 am-3:51 pm
1 stop11h 21m
Washington, D.C. Reagan-National
Tue 10/7
9:40 am-6:30 am
1 stop15h 50m
Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $309). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of $347). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from London Heathrow Airport to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 16% versus a flight in the morning.
Travelers seeking maximum savings on their London Heathrow Airport to Washington, D.C. flight should consider departing on Friday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from LHR to WAS are scheduled on a Tuesday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).
In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.
If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).
Food
Crew
Entertainment
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Crew
Entertainment
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Crew
Entertainment
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Crew
Entertainment
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Crew
Entertainment
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Food
Crew
Entertainment
Comfort
Boarding
Overall
Reviews
Kim,May 2025
PIH - SLC
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$390 | Average$833 | FlexibilityNo cancel fee | On-time77% | |
Cheapest$392 | Average$560 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$431 | Average$984 | FlexibilityNo cancel fee | On-time78% | |
Cheapest$510 | Average$986 | FlexibilityNo cancel fee | On-time76% | |
Cheapest$564 | Average$805 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$595 | Average$869 | FlexibilityNo cancel fee | On-time70% | |
Cheapest$619 | Average$787 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$652 | Average$812 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$652 | Average$926 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$682 | Average$883 | FlexibilityNo cancel fee | On-time69% |