Cheap flights from London to Washington, D.C.

Flight deals from London to Washington, D.C.

Below you can see the best deals on flights London — Washington, D.C. for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 17 August, from $372.

Top 10 cheap flights from London to Washington, D.C.

London — Washington, D.C.

05:40—10:16

11 Aug 2026

28 h 36 m

3 stops

London — Washington, D.C.

05:40—10:16

11 Aug 2026

28 h 36 m

3 stops

London — Washington, D.C.

05:40—19:38

11 Aug 2026

37 h 58 m

3 stops

London — Washington, D.C.

05:40—12:47

10 Aug 2026

31 h 7 m

3 stops

London — Washington, D.C.

05:40—11:43

11 Aug 2026

30 h 3 m

3 stops

London — Washington, D.C.

10:05—10:25

13 Aug 2026

24 h 20 m

3 stops

London — Washington, D.C.

05:40—10:25

13 Aug 2026

28 h 45 m

3 stops

London — Washington, D.C.

05:40—10:25

13 Aug 2026

28 h 45 m

3 stops

London — Washington, D.C.

10:05—11:20

13 Aug 2026

25 h 15 m

3 stops

London — Washington, D.C.

05:40—11:20

13 Aug 2026

29 h 40 m

3 stops

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the London — Washington, D.C. flight

Looking for cheap flights from London to Washington, D.C.? There are no direct flights on this route, but you can compare convenient connections and fares from different airlines, then book your London — Washington, D.C. ticket online.

There are no direct flights — tickets are sold with a connection (usually via Pearson International Airport), the whole trip with a connection takes about 4 h 11 min, flights are operated by Air Canada, the distance between the cities is around 575 km.

Planning your trip? You may find our Washington, D.C. travel guide, how to get from the airport into town and Washington, D.C. weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

from $372Min. price

AugustCheapest

AugustPeak season

NoDirect flights

575 kmDistance

4 h 11 minTravel time

Below is a calendar of the lowest flight ticket prices for London — Washington, D.C. by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $372 in August, and the most expensive are around $372 in August. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

Prices by month

Average one-way fares from London to Washington, D.C. by month. Tickets are usually cheapest in August (around $306) and priciest in December (about $429) — use the table and chart below to pick the best time to fly.

Month	Average price	Level	Month	Average price	Level	Month	Average price	Level
Jan	$319	low	May	$368	medium	Sep	$355	medium
Feb	$319	low	Jun	$417	high	Oct	$355	medium
Mar	$343	medium	Jul	$417	high	Nov	$343	medium
Apr	$404	high	Aug	$306	low	Dec	$429	high

Some values are estimated based on seasonality.

When to fly

Weather in Washington, D.C.: it is warmest in July (up to 32 °C on average) and coolest in January (around 7 °C). The driest month is October.

Tickets are usually cheapest in August and most expensive in August. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Washington, D.C.

Dry and wet days · Washington, D.C.

Wind speed and direction · Washington, D.C.

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Destination

How to get the best deal on a London — Washington, D.C. ticket

Book ahead: fares for London — Washington, D.C. are usually lower 3–8 weeks before departure than at the last minute.
Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
The cheapest month to fly to Washington, D.C. is usually August — plan your trip around it if your dates are flexible.
There are no direct flights — travellers usually connect via Pearson International Airport. Compare different connections: a layover adds time but lowers the price.
Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Flights on the London — Washington, D.C. route are operated by 1 airline; Air Canada runs the most flights. There are no direct flights — compare carriers and convenient connections below.

Air CanadaAC
WebsiteFleet: 20346M pax/year
- YXU → YYZ → DCA (with stopover)
Open →

Cities and airports on the London — Washington, D.C. route

Flights London — Washington, D.C. depart from London International Airport and arrive at Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport and Ronald Reagan National Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

London

YXU

Canada

About the city How to get there Weather All about the country Canada

Arrival

Washington, D.C.

WAS

United States

About the city How to get there Weather All about the country United States

Departure airports

London International AirportYXU
About the airport

Arrival airports

Washington Dulles International AirportIAD
About the airport
Baltimore/Washington International Thurgood Marshall AirportBWI
About the airport
Ronald Reagan National AirportDCA
About the airport

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Frequently asked questions about the London — Washington, D.C. flight

How long is the flight from London to Washington, D.C.?

There are no direct flights, so travel time depends on the connection in Pearson International Airport. Based on search data, the whole trip takes about 4 h 11 min including the layover.

How far is it from London to Washington, D.C.?

The distance from London to Washington, D.C. is about 575 km.

Are there direct flights from London to Washington, D.C.?

There are no nonstop flights on this route — tickets are only available with a connection (usually via Pearson International Airport).

Which airlines fly from London to Washington, D.C.?

Airlines operating London — Washington, D.C. include Air Canada. See the full list with schedules in the "Airlines" section on this page.

Which airports do London — Washington, D.C. flights use?

Flights from London depart from London International Airport, and arrive at Washington Dulles International Airport, Baltimore/Washington International Thurgood Marshall Airport, Ronald Reagan National Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from London to Washington, D.C.?

The price of a London — Washington, D.C. ticket depends on your travel date, season and demand: it is usually cheapest to fly in August, and most expensive in August. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights London — Washington, D.C.?

Flights London — Washington, D.C. are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is August. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from London to Washington, D.C.?

To catch a low fare London — Washington, D.C., book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually August.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

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About the London — Washington, D.C. flight

Facts about this route

Flight ticket prices by day: London — Washington, D.C.

Prices by month

When to fly

Temperature · Washington, D.C.

Dry and wet days · Washington, D.C.

Wind speed and direction · Washington, D.C.

We'll let you know if you need a visa

How to get the best deal on a London — Washington, D.C. ticket

Cities and airports on the London — Washington, D.C. route

London

Washington, D.C.

Interesting articles about Washington, D.C.

The World’s Largest Cities

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Frequently asked questions about the London — Washington, D.C. flight

Where else you can fly from London

Where else you can fly from Washington, D.C.

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