Direct (non-stop) flights from Washington (IAD) to London (LHR)
Find comprehensive flight information, schedules, and booking details for direct flights from Washington (IAD), US to London (LHR), GB. This popular route is operated by 3 airlines, offering multiple daily departures.• Flight Duration: 7h 10m - 8h 20m (average flight time)• Distance: 3687 miles (5932 km) (air miles between airports)• Daily Flights: 4 flights (scheduled departures per day)
Washington (IAD)
US
London (LHR)
GB
FLIGHT TIME
7h 10m - 8h 20m
FLIGHT DISTANCE
3687 miles (5932 km)
7h 10m - 7h 35m
18:20
22:20
3687 miles (5932 km)
March
3 (Show)
28
Flight Schedule
December 2025
Airlines with direct flights from Washington (IAD) to London (LHR)
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 7h 10m - 8h 20m.
Pricing patterns: March typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 18:00, 22:00, 21:00, offering more flight options and potentially better connections.
Washington (IAD) - London (LHR) flight price statistics
$746
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$655
Jan$565
Feb$544
Mar$545
Apr$1893
May$810
Jun$763
Jul$643
Aug$631
Sep$634
Oct$644
Nov$629
DecRelated Information
Airports: Washington (IAD) • London Airport (LHR)
Airlines operating this route: United Airlines (UA), British Airways, Virgin Atlantic
Frequently Asked Questions
How many flights operate from Washington (IAD) to London (LHR)?
There are 5 direct flights operating from Washington (IAD) to London (LHR). Approximately 4 flights daily.
Which airlines operate flights from Washington (IAD) to London (LHR)?
3 airlines operate on this route: United Airlines, British Airways, Virgin Atlantic.
How long is the flight from Washington (IAD) to London (LHR)?
The flight duration from Washington (IAD) to London (LHR) is approximately 7h 10m - 8h 20m.
What is the distance from Washington (IAD) to London (LHR)?
The distance from Washington (IAD) to London (LHR) is 3687 miles (5932 km).
What is the flight time range for this route?
Flight times on this route range from 7h 10m - 7h 35m.
What are the earliest and latest flight departure times?
The earliest flight departs at 18:20 and the latest flight departs at 22:20.
What is the cheapest month to fly from Washington (IAD) to London (LHR)?
March is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 28 flights operate per week from Washington (IAD) to London (LHR).
What types of aircraft operate on this route?
This route is served by Boeing 777, Airbus A350-1000, Boeing 767-400 Passenger, Airbus A330-300.
What is the average flight price from Washington (IAD) to London (LHR)?
The average flight price for a round-trip ticket from Washington (IAD) to London (LHR) is approximately $746 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from Washington (IAD) to London (LHR) for the lowest prices?
March is typically the cheapest month to fly from Washington (IAD) to London (LHR). Booking in advance and avoiding peak travel seasons can help you find better deals.
How many airlines offer flights from Washington (IAD) to London (LHR)?
3 airlines offer direct flights from Washington (IAD) to London (LHR), providing travelers with multiple options for scheduling and pricing.
How far is London (LHR) from Washington (IAD)?
The distance from Washington (IAD) to London (LHR) is 3687 miles (5932 km). This is a long-haul flight route.
How long does it take to fly from Washington (IAD) to London (LHR)?
The flight time from Washington (IAD) to London (LHR) is approximately 7h 10m - 8h 20m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.
What city does London (LHR) serve?
London (LHR) serves London, GB.