$970 Cheap Flights from London (LCY) to Washington (IAD)

View $970 flight on Mon, Jan 26, 2026Opens in a new window

Popular airlines from London City Airport (LCY) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from London to Washington (LCY-IAD)

Prices were available within the past 7 days and start at $970 for one-way flights and $610 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Tue, Oct 28 - Mon, Dec 1
LCY
London
IAD
Washington
$610 Roundtrip, found 6 days ago
$610
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Tue, Oct 28 from London to Washington, returning Mon, Dec 1, priced at $610 found 6 days ago
Swiss International Air Lines
Tue, Nov 4 - Tue, Nov 11
LCY
London
IAD
Washington
$613 Roundtrip, found 5 days ago
$613
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Tue, Nov 4 from London to Washington, returning Tue, Nov 11, priced at $613 found 5 days ago
Swiss International Air Lines
Tue, Apr 21 - Tue, Apr 28
LCY
London
IAD
Washington
$630 Roundtrip, found 3 days ago
$630
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Tue, Apr 21 from London to Washington, returning Tue, Apr 28, priced at $630 found 3 days ago
Swiss International Air Lines
Mon, Sep 8 - Mon, Oct 20
LCY
London
IAD
Washington
$633 Roundtrip, found 6 days ago
$633
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Mon, Sep 8 from London to Washington, returning Mon, Oct 20, priced at $633 found 6 days ago
Lufthansa
Wed, Sep 10 - Wed, Oct 22
LCY
London
IAD
Washington
$639 Roundtrip, found 6 days ago
$639
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Sep 10 from London to Washington, returning Wed, Oct 22, priced at $639 found 6 days ago
Swiss International Air Lines
Mon, Feb 2 - Thu, Feb 19
LCY
London
IAD
Washington
$640 Roundtrip, found 6 days ago
$640
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Mon, Feb 2 from London to Washington, returning Thu, Feb 19, priced at $640 found 6 days ago
Lufthansa
Wed, Nov 19 - Thu, Dec 11
LCY
London
IAD
Washington
$645 Roundtrip, found 6 days ago
$645
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Nov 19 from London to Washington, returning Thu, Dec 11, priced at $645 found 6 days ago
Air Dolomiti
Sun, Feb 15 - Fri, Feb 27
LCY
London
IAD
Washington
$659 Roundtrip, found 6 days ago
$659
Roundtrip
found 6 days ago
Select Air Dolomiti flight, departing Sun, Feb 15 from London to Washington, returning Fri, Feb 27, priced at $659 found 6 days ago
Virgin Atlantic
Wed, Aug 27 - Wed, Sep 10
LCY
London
IAD
Washington
$669 Roundtrip, found 6 days ago
$669
Roundtrip
found 6 days ago
Select Virgin Atlantic flight, departing Wed, Aug 27 from London to Washington, returning Wed, Sep 10, priced at $669 found 6 days ago
Delta
Thu, Sep 4 - Sat, Sep 13
LCY
London
IAD
Washington
$679 Roundtrip, found 6 days ago
$679
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Sep 4 from London to Washington, returning Sat, Sep 13, priced at $679 found 6 days ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $1,110
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $1,110
Flights from London (LCY) to Washington (IAD)
Origin airport
London City
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, British Airways, Delta, ITA Airways, Iberia, KLM, Lufthansa, Swiss International Air Lines, Virgin Atlantic
Roundtrip price
$610
Distance
3686 mi

London to Washington Flights

The cheapest times to fly from London to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to Washington are during the month of October. You can find some of the cheapest flights from London to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to Washington

Sunday is one of the best days to book for cheap flights from London to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $970 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from London City Airport (LCY) to Washington Dulles Intl. Airport (IAD) cost?
Discover the latest flight deals from LCY to IAD by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from LCY to IAD?
The cheapest flights from LCY to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from London City Airport (LCY) to Washington Dulles Intl. Airport (IAD)?
You can't fly direct to Washington Dulles Intl. Airport (IAD) from London (LCY-London City). However, you can seamlessly travel to Washington without any layovers by taking off from Heathrow Airport (LHR).
What is the cheapest airline that flies from LCY to IAD?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from LCY to IAD. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from London City Airport (LCY) to Washington Dulles Intl. Airport (IAD)?
There are no daily direct flights departing from London City Airport (LCY) to Washington Dulles Intl. Airport (IAD). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from LCY to IAD?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on a range of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from London City Airport (LCY) to Washington Dulles Intl. Airport (IAD)?
To avoid potential delays on the London City Airport (LCY) to Washington Dulles Intl. Airport (IAD) route, aim to fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from London City Airport (LCY) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute fares from LCY to IAD are typically more expensive. To secure the best prices, start searching for flights early. That being said, if you're flexible with your travel plans, you may find a cheap fare right before your journey.
Is it cheaper to book a LCY to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a LCY to IAD flight and hotel package with Expedia could lead to significant savings. What's more, managing everything in one place takes the hassle out of planning your trip. Just pick your flights and choose from our extensive range of stays, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from London City Airport (LCY) to Washington Dulles Intl. Airport (IAD)?
If you reserved your LCY to IAD flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

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