£208 Find Cheap Flights from Washington, D.C. to London – Compare and Save

Among airlines operating Washington, D.C. to London Heathrow Airport flights:

• British Airways: offers extra legroom; offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• Virgin Atlantic: offers extra legroom; offers free seat selection
• American Airlines: offers free seat selection
• Delta: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

3 airlines operate flights between Washington, D.C. and London Heathrow Airport. The airlines offering direct flights on this route include:

• British Airways
• United Airlines
• Virgin Atlantic

Flights from Washington, D.C. to London Heathrow Airport may depart from several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Flights usually arrive at London Heathrow (LHR).

Here are some options for this route, based on selected ticket types and cabin classes:

• British Airways: a cabin bag and a checked bag in Economy class
• United Airlines: a cabin bag and a checked bag in Economy class
• Virgin Atlantic: a cabin bag and a checked bag in Economy class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

Four cabin classes are available on flights from Washington, D.C. to London Heathrow Airport:

• Economy class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £447 return via Lisbon Humberto Delgado (LIS), compared with £667 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £52–£74 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

One-stop flights from Washington, D.C. to London Heathrow Airport most commonly connect through:

• Reykjavik Keflavik Intl (KEF) – 36% of one-stop connections
• Dublin (DUB) – 25% of one-stop connections
• Lisbon Humberto Delgado (LIS) – 10% of one-stop connections
• Kastrup Copenhagen (CPH) – 8% of one-stop connections

Reykjavik Keflavik Intl (KEF) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 13% on the Washington, D.C. to London Heathrow Airport route. Wednesday is the cheapest departure day at £612 return on average, while Saturday is the most expensive at £700, a difference of £88. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Washington, D.C. to London Heathrow Airport route, 18% of flights were delayed in the past 3 months, with delays averaging 2 hours 46 minutes.

Evening is the busiest departure period on Washington, D.C. to London Heathrow Airport flights, with 50% leaving in that window. Night departures account for 50%, Morning flights for 0%, and Afternoon flights for 0%.

Some of the most popular sights in London Heathrow Airport are London Victoria Station, London Euston Railway Station, and Hyde Park. These are among the most viewed places in London Heathrow Airport on KAYAK.

These are the earliest and latest flight times available from Washington, D.C. to London Heathrow Airport:

• Earliest: departs at 17:45 and lands at 01:11
• Latest: departs at 23:15 and lands at 06:41.

The flight takes about 7h 26m.

Last-minute fares on this route (booked within 2 weeks of departure) run 5% above the route average of £647. Book 5 weeks before departure for the lowest fares.

A direct flight from Washington, D.C. to London Heathrow Airport takes 7h 26m, covering 3,649 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

One-way fares from Washington, D.C. to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about £232, which is 37% below the typical average for this route.

Virgin Atlantic is slightly above the route average for timely arrivals, while British Airways has a lower on-time arrival rate. On-time arrival rates on Washington, D.C. to London Heathrow Airport flights are:

• Virgin Atlantic: 88% on time
• British Airways: 86% on time
• United Airlines: 76% on time

On average, flights on this route are punctual 82% of the time.

Afternoon flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time of 10h 46m, compared to 10h 50m via Dublin (DUB) and 11h 00m via Newark (EWR).

London Heathrow Airport is 5 hours ahead of Washington, D.C. (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

London Heathrow Airport (LHR) hosts 5 major car hire companies, with daily rates starting from around £5 for economy cars. Top options include:
· GREEN MOTION
· DRIVALIA
· Europcar
· Alamo
· Hertz

Return flights from Washington, D.C. to London Heathrow Airport range from £511 to £827, with an average of £647 over the past 12 months. Anything below £511 counts as a good deal.

American Airlines is the only airline on the Washington, D.C. to London Heathrow Airport route offering in-flight Wi-Fi. Pricing depends on fare class.