WAS - LHR

$319 Find Cheap Flights from Washington, D.C. to London Heathrow Airport - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$670
Typical prices: $731-$1,162
Icelandair
Sun 12/9Sun 12/16
IAD - LHR • 1 stop
Cheapest non-stop
$815
Typical prices: $763-$1,192
British Airways
Fri 12/14Thu 12/20
IAD - LHR • Non-stop
Advice from real travelers
For more comfort, Premium Economy adds legroom on BA, Delta, American, and Iberia.
Virgin Atlantic Economy Delight adds priority boarding and extra legroom on this route.
Expert advice
+1
Expert advice
+1
Nonstop flights
You can fly direct with United Airlines, British Airways and Virgin Atlantic. Average duration is 7h 21m
Direct flights
+1
Direct flights
+1
Top routes
Cheapest • 7% average savings
Most popular
Insights
Insights
Avoid delays
Most punctual • 88% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 23 weeks in advance save around 15% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $635 (round-trip)
Shortest trip • 10h 45m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London Heathrow Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Washington, D.C. to Heathrow (WAS-LHR)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Heathrow

Wed, Dec 9 - Wed, Dec 16
Icelandair Logo
7:40 pm - 7:30 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
18h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
8:35 pm - 6:30 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
26h 55m1 stop Reykjavik Keflavik Intl
$670Icelandair
Thu, Dec 10 - Tue, Dec 15
Icelandair Logo
7:40 pm - 7:30 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
18h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
8:35 pm - 6:30 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
26h 55m1 stop Reykjavik Keflavik Intl
$670Icelandair
Mon, Nov 16 - Mon, Nov 23
Multiple Airlines Logo
7:40 pm - 5:00 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
16h 20m2 stops Reykjavik Keflavik Intl Stockholm Arlanda
Multiple Airlines Logo
6:40 am - 6:30 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
16h 50m2 stops Stockholm Arlanda Reykjavik Keflavik Intl
$673Multiple Airlines
Fri, Dec 11 - Wed, Dec 23
TAP AIR PORTUGAL Logo
10:30 pm - 5:30 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
14h 00m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
6:30 pm - 3:15 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
25h 45m1 stop Lisbon Humberto Delgado
$674TAP AIR PORTUGAL
Sat, Dec 5 - Mon, Dec 7
Scandinavian Airlines Logo
8:30 pm - 5:00 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
15h 30m2 stops Kastrup Copenhagen Stockholm Arlanda
Scandinavian Airlines Logo
6:40 am - 5:15 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
15h 35m1 stop Kastrup Copenhagen
$674Scandinavian Airlines
Mon, Nov 23 - Wed, Dec 2
Multiple Airlines Logo
7:40 pm - 9:20 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
20h 40m2 stops Reykjavik Keflavik Intl Stockholm Arlanda
Multiple Airlines Logo
5:00 pm - 6:30 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
30h 30m3 stops Kastrup Copenhagen Stockholm Arlanda Reykjavik Keflavik Intl
$675Multiple Airlines
Sat, Jan 30 - Sat, Feb 6
Iberia Logo
5:50 pm - 12:00 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
13h 10m1 stop Madrid Barajas
Iberia Logo
6:00 am - 4:20 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
15h 20m1 stop Madrid Barajas
$677Iberia
Wed, Jan 27 - Fri, Feb 5
TAP AIR PORTUGAL Logo
10:30 pm - 6:55 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
15h 25m1 stop Lisbon Humberto Delgado
TAP AIR PORTUGAL Logo
8:15 am - 8:30 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
17h 15m1 stop Lisbon Humberto Delgado
$677TAP AIR PORTUGAL
Wed, Mar 3 - Mon, Mar 15
Scandinavian Airlines Logo
8:30 pm - 4:00 pmIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
14h 30m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
10:20 am - 6:15 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
11h 55m1 stop Kastrup Copenhagen
$682Scandinavian Airlines
Wed, Feb 3 - Fri, Feb 5
Iberia Logo
6:05 pm - 6:15 amIAD  Washington, D.C. Dulles Intl-LHR London Heathrow
7h 10mnonstop
Iberia Logo
6:15 am - 4:20 pmLHR  London Heathrow-IAD Washington, D.C. Dulles Intl
15h 05m1 stop Madrid Barajas
$705Iberia
Booking Insights

Price, demand and travel trends for Washington, D.C. to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Washington, D.C. to London Heathrow Airport?

Round-trip flights from Washington, D.C. to London Heathrow Airport typically range from $731 to $1,162. The lowest price found in the past 5 days was $670, on Icelandair.

What is the cheapest Washington, D.C. to London Heathrow Airport flight route?

Washington, D.C. Reagan-National Airport (DCA) to London Heathrow Airport (LHR) is the cheapest Washington, D.C. to London Heathrow Airport route, averaging $799 round-trip. Other Washington, D.C. to London Heathrow Airport routes average $924, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Washington, D.C. to London Heathrow Airport?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Washington, D.C. to London Heathrow Airport. It’s 5% cheaper than the average day, while Saturday is the most expensive, with prices 10% higher.

What’s the cheapest month to fly from Washington, D.C. to London Heathrow Airport?

•February is the cheapest month to fly from Washington, D.C. to London Heathrow Airport at $666 round-trip.
•June ($1,297) and July ($1,089) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 94% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Washington, D.C. to London Heathrow Airport the cheapest?

Flights from Washington, D.C. to London Heathrow Airport are cheapest 23 weeks before departure. Booking in this window typically costs about 15% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Washington, D.C. to Heathrow

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways and LHR

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, Delta and IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Laura Ratliff

Laura Ratliff

Expert on Virgin Atlantic

Laura Ratliff is a New York-based writer and editor. She lives in downtown Brooklyn with her husband and their beloved dogs. Originally from Texas, she now considers New York City her home. She typically spends more than 200,000 miles on a plane each year and stays in plenty of hotels.

Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Key details for Washington, D.C. to London Heathrow Airport flights

Low season

January

Cheapest flight

$319
Beat the crowds with an average 25% drop in travelers.
The most popular month to fly with an average 26% increase in travelers.
One-way flight from Washington, D.C. Dulles Intl Airport to London Heathrow Airport

When to book flights from Washington, D.C. to Heathrow

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Washington, D.C. to Heathrow: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Washington, D.C. to Heathrow 
DeeFlew with United Airlines-Feb 2025
For me the best route to LHR is the late night departure on UAL. The flight is often roughly 6.5 hours so I skip dinner, use an eye mask and earplugs and try to sleep.
EllenFlew with British Airways-Oct 2024
Do not check your bag if at all possible, especially if you have a connecting flight. Your bag will not make it.
CraigFlew with United Airlines-Jun 2024
Get to beginning of boarding group early. Bring as little on board as possible due to small overhead bin space.

Your Washington, D.C. to London Heathrow Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Washington, D.C. to London Heathrow Airport?

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

    • Earliest: departs at 6:05 pm and lands at 1:26 am
    • Latest: departs at 11:15 pm and lands at 6:36 am.

    The flight takes about 7h 21m.

  • What cabin classes can I book on flights from Washington, D.C. to London Heathrow Airport?

    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.

  • How long is a flight from Washington, D.C. to London Heathrow Airport?

    A nonstop flight from Washington, D.C. to London Heathrow Airport takes 7h 21m, covering 3,649 miles.

  • Do I need a passport to fly from Washington, D.C. to London Heathrow Airport?

    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.

  • How much should I expect to pay for a Washington, D.C. to London Heathrow Airport flight?

    Round-trip flights from Washington, D.C. to London Heathrow Airport range from $731 to $1,162, with an average of $919 over the past 12 months. Anything below $731 counts as a good deal.

  • How expensive are last-minute Washington, D.C. to London Heathrow Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 8% above the $919 route average. Book 23 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Washington, D.C. to London Heathrow Airport?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $635 round-trip via Lisbon Humberto Delgado (LIS), compared to $952 for nonstop.

  • How does on-time performance compare across airlines flying from Washington, D.C. to London Heathrow Airport?

    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: 85% on time
    • United Airlines: 76% on time

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

  • What is the standard checked-bag allowance on flights from Washington, D.C. to London Heathrow Airport?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $61–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • How are flight departures from Washington, D.C. to London Heathrow Airport spread across the day?

    Evening is the busiest departure period on Washington, D.C. to London Heathrow Airport flights, with 60% of flights leaving in that window. Night departures account for 40%, morning flights for 0%, and afternoon flights for 0%.

  • Which airlines offer Wi-Fi on Washington, D.C. to London Heathrow Airport flights?

    Three airlines offer in-flight Wi-Fi on Washington, D.C. to London Heathrow Airport flights:

    • American Airlines
    • Delta
    • Finnair

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

  • How are flight prices from Washington, D.C. to London Heathrow Airport looking right now?

    One-way fares from Washington, D.C. to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about $320, which is 37% below the typical average for this route.

  • What car rental options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates averaging $39 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

  • Which airports can I use when flying from Washington, D.C. to London Heathrow Airport?

    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).

  • What time of day has the fewest delays on flights from Washington, D.C. to London Heathrow Airport?

    Afternoon flights have the fewest delays on this route, while evening departures tend to have the most.

  • At what point is a flight considered delayed from Washington, D.C. to London Heathrow Airport?

    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 2h 49m.

  • Which airports do connecting flights from Washington, D.C. to London Heathrow Airport pass through?

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

    • Reykjavik Keflavik Intl (KEF) - 37% of one-stop connections
    • Dublin (DUB) - 24% of one-stop connections
    • Lisbon Humberto Delgado (LIS) - 10% of one-stop connections
    • Kastrup Copenhagen (CPH) - 8% of one-stop connections

  • Can I save money by using flexible dates for flights from Washington, D.C. to London Heathrow Airport?

    Yes. Flexible dates can save you up to 14% on flights from Washington, D.C. to London Heathrow Airport. Wednesday is the cheapest departure day at $875 round-trip on average, while Saturday is the most expensive at $1,016, a difference of $141.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Washington, D.C. to London Heathrow Airport?

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

    • United Airlines
    • British Airways
    • Virgin Atlantic

  • How much time can I save by choosing a different layover airport from Washington, D.C. to London Heathrow Airport?

    Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time at 10h 45m, compared with 10h 47m via Dublin (DUB) and 11h 04m via Newark (EWR).

  • What is the time difference between Washington, D.C. and London Heathrow Airport?

    London Heathrow Airport is 4 hours ahead of Washington, D.C. (British Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Hyde Park and Buckingham Palace. These are among the most viewed places in London Heathrow Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Washington, D.C. to London Heathrow Airport flights?

    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
    • American Airlines: offers free seat selection
    • Virgin Atlantic: offers extra legroom; 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.

  • Which airlines include bags at no extra cost on Washington, D.C. to London Heathrow Airport flights?

    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
    • American Airlines: a cabin bag and a checked bag in Economy Class

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

  • Where can I sleep at London Heathrow Airport?

    For customers with layover flights who want to get a quick nap within the airport grounds, there are sofas and sleep-friendly seating distributed across Terminals 2, 3, and 4. Terminal 3, Airside has a specially designated resting zone with lounges and snack machines while Terminal 4 has sleep cabins. You can also sleep in hotels connected to Terminals 4 and 5 like Aerotel London Heathrow and Hilton London Heathrow Airport.

  • Does Washington Dulles Aiport have accessible services?

    Yes. For wheelchair users, IAD provides free wheelchair services, air shuttle buses with wheelchair lifts, designated parking spaces, designated public restrooms with accessible facilities, and accessible telephones. For the visually impaired, all the elevators have raised braille buttons.

  • Does London Heathrow Airport offer family services?

    LHR offers a variety of services to enhance the customer’s experience. For infants, their parents can access baby changing facilities in the washrooms found on both Airside and Landside terminals. For older kids up to 9 years old, the children’s play areas located at the Airside departure lounges in Terminals 2A Gate 16, 3, 4 Gates 1-6, and 5A Gate A7 are open for around 15h a day. Some airport restaurants, often indicated, allow kids to eat free.

  • What are the transportation options from London Heathrow Airport?

    LHR has a central bus station that runs 24h a day that can be accessed from all the terminals either by walking or by boarding the free shuttle bus courtesy of LHR. At the station, travelers can board coaches or local buses that charge approximately £9 ($11) to get to. Travelers can also rent a car from car rental companies at the airport that charge around £22 ($26) per day. Taxis located outside each terminal charge around £30 ($37) to Central London. The Heathrow Connect train that runs at intervals of around 15min transports passengers between LHR and Paddington Station charging around £25 ($30).

Your guide to booking Washington, D.C. to London Heathrow Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Saturday. On this route, Wednesday flights average $875, about $141 less than Saturday fares (14% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 23 weeks before you fly. On this route, that window historically saves about 15% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. to London Heathrow Airport trip for February. Fares historically average $666 round-trip in that month - typically $631 less than the most expensive month, which is June (based on the last 12 months).
  • For the best chance of arriving on time, fly with Virgin Atlantic. Over the past three months, 88% of Virgin Atlantic flights from Washington, D.C. to London Heathrow Airport arrived on time, slightly above the route average of 82%. When flights on this route arrive late, they're delayed by an average of 2h 49m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Lisbon Humberto Delgado Airport (LIS) can be cheaper than flying direct. The cheapest layover option averages $635 round-trip on this route - about $316 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

    • Hilton London Heathrow Airport
  • London Heathrow Airport (LHR) is the largest airport in London that spans four terminals, Terminals 2, 3, 4, and 5. Terminals 4 and 5 are connected by a free shuttle that runs at intervals of approximately 30min while Terminals 2 and 3 are a walkable distance from each other.
  • Washington Dulles Aiport (IAD) has services to cater to the passengers’ pets. There are dedicated pet relief areas strategically located on the Airside of the terminal at Gate D1 and Gate A32. On the Landside of the terminal, they are located at Arrivals Level near carousel 1, Door 1 near Aeromexico desk, and Door 16 near the United Airlines booth.
  • At LHR, you can access multifaith prayer rooms at Terminal 2, near Gate A21, Terminal 4, Zone G, Terminal 5 departures near Gates 3, and Terminal 3 departures near Gate 24. There is also the underground St. George’s chapel located between Terminals 3 and 1.
  • To acquire banking services at IAD, go to the Capitol One Bank Branch at Landside near Baggage Claim carousel 5. For currency exchange services, go to the ICE Currency Exchange branches on both Airside and Landside.
  • IAD offers baggage carts for rent through Smart Carte rentals. You can pay for the rentals using cash or using credit cards but for customers arriving in the International Arrivals area on international flights, they’re free.

Prefer to fly direct from Washington, D.C. to London Heathrow Airport?

 
Find which airlines fly direct from Washington, D.C. to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. to London Heathrow

Monday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Tuesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Wednesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Thursday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Friday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Saturday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Sunday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

See more direct flights

Direct returns

London Heathrow to Washington, D.C.

Monday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Tuesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Wednesday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Thursday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Friday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Saturday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

Sunday

British Airways,United Airlines,Virgin Atlantic

British Airways,United Airlines, +1 more

See more direct flights

More options for your flight from Washington, D.C. to Heathrow

Complete your trip to London with a hotel stay or car rental