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 | $657 (ChecknFly) |
---|---|
One-way from | $387 (Kiwi.com) |
Popular in | August |
Cheapest in | February |
Average price | $870 |
Good round-trip deal | $747 or less |
Good one-way deal | $654 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Tue 11/4
9:55 am-7:31 pm
1 stop14h 36m
Washington, D.C. Dulles Intl
Fri 11/7
8:50 am-8:35 am
2 stops18h 45m
LondonWashington, D.C.
LHR - DCA
LHRDCA
London Heathrow
Fri 8/22
11:00 am-6:38 pm
1 stop12h 38m
Washington, D.C. Reagan-National
Wed 10/8
3:21 pm-7:50 am
1 stop11h 29m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Wed 10/8
6:40 am-7:59 pm
2 stops18h 19m
Washington, D.C. Dulles Intl
Sun 10/12
10:05 pm-5:00 pm
2 stops13h 55m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Sat 10/18
12:15 pm-3:30 pm
Nonstop8h 15m
Washington, D.C. Dulles Intl
Sat 10/18
5:37 pm-6:30 am
1 stop31h 53m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Sat 9/6
8:40 am-3:35 pm
1 stop11h 55m
Washington, D.C. Dulles Intl
Fri 9/12
5:50 pm-6:20 am
Nonstop7h 30m
LondonWashington, D.C.
LHR - DCA
LHRDCA
London Heathrow
Fri 10/31
6:30 am-6:07 pm
2 stops15h 37m
Washington, D.C. Reagan-National
Mon 11/3
12:55 pm-7:10 am
2 stops13h 15m
LondonWashington, D.C.
LHR - DCA
LHRDCA
London Heathrow
Wed 9/10
6:15 pm-8:04 am
1 stop18h 49m
Washington, D.C. Reagan-National
Wed 10/1
11:00 am-6:25 am
1 stop14h 25m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Sun 10/19
7:50 pm-3:20 pm
1 stop24h 30m
Washington, D.C. Dulles Intl
Wed 10/29
11:30 pm-9:35 pm
1 stop18h 05m
LondonWashington, D.C.
LHR - DCA
LHRDCA
London Heathrow
Wed 9/17
8:55 am-7:02 pm
1 stop15h 07m
Washington, D.C. Reagan-National
Mon 9/22
3:35 pm-9:40 am
1 stop13h 05m
LondonWashington, D.C.
LHR - IAD
LHRIAD
London Heathrow
Tue 8/12
12:35 pm-4:00 pm
Nonstop8h 25m
Washington, D.C. Dulles Intl
Thu 9/11
5:50 pm-6:20 am
Nonstop7h 30m
Booking 44 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 $241). Flying from London Heathrow Airport to Washington, D.C. in March is currently the most expensive (average of $290). 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 17% versus a flight in the afternoon.
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. Sunday afternoons 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 Wednesday (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).
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Kim,May 2025
PIH - SLC
Airline | Cheapest | Average | Flexibility | On-time |
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Cheapest$390 | Average$833 | FlexibilityNo cancel fee | On-time77% | |
Cheapest$392 | Average$560 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$431 | Average$986 | FlexibilityNo cancel fee | On-time78% | |
Cheapest$529 | Average$993 | FlexibilityNo cancel fee | On-time76% | |
Cheapest$564 | Average$804 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$595 | Average$871 | 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$984 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$682 | Average$886 | FlexibilityNo cancel fee | On-time69% |