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LHR (London) to IAD (Washington) Flights $505.98

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Cheap LHR to IAD Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from London to Washington (LHR to IAD)

Question : How many departure times are there on a given day?
Answer : Each day is different, but on average, you can expect to see six available departure times. Compared to the average route departing the United Kingdom with two flight times, you'll have more choices than most.

Question : In terms of overall promptness, how does LHR to IAD rank compared to the rest of the world?
Answer : LHR to IAD currently scores 4 out of a possible 5 stars in promptness. This score combines both the number of delayed flights and total delay minutes. With 4 stars, you should feel confident in getting to Dulles on time.

Question : What are the chances this flight will be delayed?
Answer : Passengers are currently getting to their destination on schedule 81% of the time, which ranks in the top 50% of the world. If a flight is delayed, though, expect an average of 26 minutes added to your flight time.

Question : How many days should you spend in Dulles?
Answer : Passengers from LHR to IAD stay 21 days on average.

Question : If punctuality is required for you to book a flight, which airline is your best bet?
Answer : United Airlines holds the best record for flights from LHR to IAD with a 90% on-time rate. Note that if they do have a delay, it usually lasts about half an hour.

Question : Which airline is least likely to get you to IAD on time?
Answer : If you're flying British Airways to Dulles from London, you may be tardy as they're delayed 35% of the time. If you should choose this airline, be sure to track the flight status to stay on top of the departure time.

Question : What price range should you expect when booking from London (LHR) to Dulles (IAD)?
Answer : Ranging anywhere from $514 to $7,060, prices for LHR to IAD do change a lot more than the majority of routes from the United Kingdom. However, the sooner you book, the more you'll be able to save.