$648 Cheap Flights from London (LGW) to Washington (IAD)

Bundle Your Flight + Hotel & Save!

Featured airlines

Top nine airline logos for desktop

Cheap Flights from London to Washington (LGW-IAD)

Prices were available within the past 7 days and start at $648 for one-way flights and $683 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, Nov 13 - Wed, Nov 20
LGW
London
IAD
Washington
$683 Roundtrip, found 7 hours ago
$683
Roundtrip
found 7 hours ago
Select Icelandair flight, departing Wed, Nov 13 from London to Washington, returning Wed, Nov 20, priced at $683 found 7 hours ago
Icelandair
Tue, Oct 1 - Tue, Nov 12
LGW
London
IAD
Washington
$685 Roundtrip, found 5 days ago
$685
Roundtrip
found 5 days ago
Select Icelandair flight, departing Tue, Oct 1 from London to Washington, returning Tue, Nov 12, priced at $685 found 5 days ago
Icelandair
Tue, Sep 17 - Mon, Sep 30
LGW
London
IAD
Washington
$688 Roundtrip, found 4 days ago
$688
Roundtrip
found 4 days ago
Select Icelandair flight, departing Tue, Sep 17 from London to Washington, returning Mon, Sep 30, priced at $688 found 4 days ago
Icelandair
Wed, Sep 18 - Wed, Oct 2
LGW
London
IAD
Washington
$690 Roundtrip, found 11 hours ago
$690
Roundtrip
found 11 hours ago
Select Icelandair flight, departing Wed, Sep 18 from London to Washington, returning Wed, Oct 2, priced at $690 found 11 hours ago
TAP Portugal
Fri, Nov 8 - Thu, Nov 14
LGW
London
IAD
Washington
$693 Roundtrip, found 3 days ago
$693
Roundtrip
found 3 days ago
Select TAP Portugal flight, departing Fri, Nov 8 from London to Washington, returning Thu, Nov 14, priced at $693 found 3 days ago
Royal Air Maroc
Thu, Oct 31 - Fri, Nov 15
LGW
London
IAD
Washington
$694 Roundtrip, found 4 days ago
$694
Roundtrip
found 4 days ago
Select Royal Air Maroc flight, departing Thu, Oct 31 from London to Washington, returning Fri, Nov 15, priced at $694 found 4 days ago
TAP Portugal
Fri, Sep 20 - Sun, Oct 6
LGW
London
IAD
Washington
$695 Roundtrip, found 6 days ago
$695
Roundtrip
found 6 days ago
Select TAP Portugal flight, departing Fri, Sep 20 from London to Washington, returning Sun, Oct 6, priced at $695 found 6 days ago
Icelandair
Wed, Jun 19 - Mon, Sep 23
LGW
London
IAD
Washington
$696 Roundtrip, found 5 days ago
$696
Roundtrip
found 5 days ago
Select Icelandair flight, departing Wed, Jun 19 from London to Washington, returning Mon, Sep 23, priced at $696 found 5 days ago
TAP Portugal
Fri, Nov 8 - Thu, Nov 14
LGW
London
IAD
Washington
$707 Roundtrip, found 3 days ago
$707
Roundtrip
found 3 days ago
Select TAP Portugal flight, departing Fri, Nov 8 from London to Washington, returning Thu, Nov 14, priced at $707 found 3 days ago
Virgin Atlantic
Wed, Sep 18 - Wed, Oct 2
LGW
London
IAD
Washington
$734 Roundtrip, found 11 hours ago
$734
Roundtrip
found 11 hours ago
Select Virgin Atlantic flight, departing Wed, Sep 18 from London to Washington, returning Wed, Oct 2, priced at $734 found 11 hours ago
Flights from London (LGW) to Washington (IAD)
Origin airport
Gatwick
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, British Airways, Delta, ITA Airways, Iberia, Icelandair, KLM, Royal Air Maroc, Swiss International Air Lines, TAP Portugal, Turkish Airlines, Virgin Atlantic
Roundtrip price
$682
Distance
3685 mi

London to Washington Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from London to Washington offer the perfect respite. Not only does exploring Washington provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from London to Washington may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Washington are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Washington more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Washington is $648 now!

Frequently asked questions

How much is a one-way flight from LGW to IAD?
Get ready to score a fantastic deal, because London flights to Washington start from only $625. This is based on the cheapest fare found on Expedia for this journey with a departure date during the next three months. This airfare is for an TAP Portugal flight, taking off from London Gatwick on June 21 2024 and landing at Washington Dulles Intl. Airport (IAD). The price of this flight was updated on May 23 2024 and has not changed since.
How long does it take to fly from Gatwick Airport (LGW) to IAD?
With Norse Atlantic UK, a direct flight takes around 8 hours and 20 minutes. Step on board the 10:10AM flight from London Gatwick and touch down at Dulles Intl. Airport at 1:30PM. Get your hands on a superb deal on this and many other routes when you use Expedia to arrange your trip.
Is it cheaper to buy a plane ticket from London Gatwick to Washington Dulles Intl. Airport (IAD) last minute?
Booking your journey from Gatwick Airport (LGW) to IAD at the last minute could save you a pretty penny if you happen to find a good deal. However, fares don’t typically get cheaper as the date of departure nears. If you take a wait-and-see approach, flights could also be booked out or the best seats gone (because no one wants the middle seat). If you don’t want to hedge your bets, book well ahead of the date you want to leave. In fact, some of the best deals are available on Expedia up to a year in advance. If your preferred airline hasn’t released its airfares yet, check back regularly as deals are constantly updated on Expedia.
What is the cheapest airline flying from LGW to Washington Dulles Intl. Airport (IAD) in the next 90 days?
Based on airfares found on Expedia with a departure date within the next 90 days, Royal Air Maroc is the cheapest carrier flying from London to Washington. The fare between these destinations starts at $643. This flight leaves LGW on June 19 2024 and touches down at IAD. The price was last updated on June 4 2024 and has not changed since.
What's the cheapest price for a flight from Gatwick Airport (LGW) to Dulles Intl. Airport next month?
Lock in a flight from London to Washington for $643. This is the cheapest price for this trip departing in the next month. It’s an Royal Air Maroc flight heading off from LGW on June 19 2024 and touching down at Washington Dulles Intl. Airport (IAD). The airfare was last updated on June 4 2024 and has not changed since. It was found after searching all available flights on Expedia within the next 30 days.
Can I find cheap nonstop flights from Gatwick Airport (LGW) to Washington Dulles Intl. Airport (IAD) in the next three months?
The next adventure you go on doesn’t have to make a huge dent in your budget. We’ve sourced a roundtrip nonstop flight from London to Washington in the next 90 days for $2835. This price is based on airfares found on Expedia with a departure date within the next three months and was updated on June 4 2024. The flight via Norse Atlantic UK takes off from London Gatwick on June 20 2024 and touches down at IAD. It has a return date of June 28 2024.If you want to locate nonstop cheap flights from LGW to IAD, use our filters once you’ve hit the search button. Just click on “Nonstop” under “Filter by” on the left side of the page to browse the options. Your results will be arranged from the lowest price, so you’ll see the cheapest nonstop fares first. You can also check out prices for nearby days by clicking “Flexible dates” on the same page.
What airports do you fly into for Sterling from Gatwick?
Washington Dulles Intl. Airport (IAD), Ronald Reagan Washington National Airport (DCA) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI) are your options when traveling from Gatwick to Sterling. Roughly 4 mi south of the center of Sterling, Washington Dulles Intl. Airport (IAD) is the city’s principal hub. Consider things like flight departure and arrival times and the distance to your hotel before choosing your airport. Reston Town Center and One Loudoun are two leading attractions to check out when you reach your destination.
What are the most popular departure times for flights from Gatwick Airport (LGW) to Washington Dulles Intl. Airport (IAD)?
For Norse Atlantic UK flights from LGW to IAD, the busiest period is between 10:00 AM - 11:00 AM. If you want to avoid any delays, travel in the morning. This way you’re more likely to avoid air traffic that builds up around airports later in the day.
Can I change the date of my flight from London Gatwick to Washington Dulles Intl. Airport (IAD)?
Plans don’t always work out, so Expedia is here to help make things easy. To start, find your LGW to Dulles Intl. Airport itinerary through the Expedia Trips portal and look up the fare conditions about what sorts of changes are allowed. If you booked your ticket in the last 24 hours, some airlines will let you cancel without charge and organize new flights. If you booked more than 24 hours ago, connect with us via our Customer Service portal so we can assist you further.
London nearby Airports

London

Heathrow to Washington
$560.40
London City to Washington
$762.90
*Available to One Key members.