$327 Find Cheap Flights from Washington Dulles Airport to London - Compare and Save

If your trip from Washington, DC, to London, UK, will be shorter than six months, you do not require a visa to enter the United Kingdom. There is a visa waiver agreement in effect between the US and the UK that enables citizens of the US to visit the UK for up to 90 days without a visa.

British Airways provides one of the best carry-on bag policies on flights from Washington Dulles Airport to London Heathrow (LHR), allowing passengers one carry-on bag and one personal item for free. The cabin bag should have a maximum size of 22 x 18 x 10 inches and a maximum weight of 51 lb.

Heathrow Airport (LHR) is the main airport serving London and its metropolis. The airport serves several cities within an hour's drive of London, including Reading, Guildford, Slough, Luton, Windsor, Milton Keynes, Watford, Cheltenham, Oxford, Brighton, Portsmouth, Basingstoke, Cambridge, Eastbourne, Basildon, and Maidstone. These cities are accessible via car rentals, buses, or taxis.

Families should consider flying aboard British Airways flights on the Washington-London route. British Airways offers plenty of family-friendly services, including priority boarding for families with young kids, allowing them extra time to settle into their seats and stow their bags. The airline also provides kid-friendly meals and a wide selection of in-flight entertainment, including games and cartoon shows.

Among airlines operating Washington, D.C. Dulles Intl Airport to London 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. Dulles Intl Airport and London. The airlines offering nonstop flights on this route include:

• British Airways
• United Airlines
• Virgin Atlantic

Flights from Washington, D.C. Dulles Intl Airport to London usually depart from Washington, D.C. Dulles Intl (IAD) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

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 travelers should check the fare details before booking.

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

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

Prices vary by airline.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $548 round-trip via Lisbon Humberto Delgado (LIS), compared to $904 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $70–$100 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. Dulles Intl Airport to London most commonly connect through:

• Reykjavik Keflavik Intl (KEF) - 44% of one-stop connections
• Dublin (DUB) - 22% of one-stop connections
• Lisbon Humberto Delgado (LIS) - 17% of one-stop connections
• Kastrup Copenhagen (CPH) - 7% 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. Dulles Intl Airport to London route. Wednesday is the cheapest departure day at $822 round-trip on average, while Saturday is the most expensive at $944, a difference of $122. 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. Dulles Intl Airport to London 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. Dulles Intl Airport to London flights, with 50% of flights 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 are Paddington Station, Central London and London Victoria Station. These are among the most viewed places in London on KAYAK.

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

• Earliest: departs at 5:45 pm and lands at 1:12 am
• Latest: departs at 11:15 pm and lands at 6:42 am.

The flight takes about 7h 27m.

Last-minute fares on this route - booked within 2 weeks of departure - run 6% above the route average of $871. Book 5 weeks before departure for the lowest fares.

A nonstop flight from Washington, D.C. Dulles Intl Airport to London takes 7h 27m, covering 3,677 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. Dulles Intl Airport to London are currently lower than usual. Average one-way flight prices are about $331, which is 34% 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. Dulles Intl Airport to London flights are:

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

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

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 at 10h 46m, compared with 10h 51m via Dublin (DUB) and 11h 08m via New York John F Kennedy Intl (JFK).

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

Since London is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near London Heathrow Airport (LHR) — daily rates from around $7:

· GREEN MOTION
· DRIVALIA
· Europcar
· Alamo
· Hertz

Near London Gatwick Airport (LGW) — daily rates from around $8:

· GREEN MOTION
· DRIVALIA
· U-Save
· Europcar
· Alamo

Near London City Airport (LCY) — daily rates from around $11:

· GREEN MOTION
· Budget
· Hertz
· Avis
· Sixt

Near London Luton Airport (LTN) — daily rates from around $11:

· GREEN MOTION
· DRIVALIA
· Alamo
· Europcar
· Budget

Near London Stansted Airport (STN) — daily rates from around $10:

· GREEN MOTION
· DRIVALIA
· Europcar
· Alamo
· U-Save

Round-trip flights from Washington, D.C. Dulles Intl Airport to London range from $677 to $1,114, with an average of $871 over the past 12 months. Anything below $677 counts as a good deal.

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