Cheap flights from Cardiff to Washington DC

from as little as £616

14 nights in Washington DC, departing Cardiff on 23 / Sep / 2025 with Virgin Atlantic (price found 3 hours ago)

Subject to availability, prices correct of the last 24 hours
Washington DC

Cheap return flights from Cardiff to Washington DC

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The Cardiff / Washington DC route

All 5718 km of it

Cheap flight deals for this route

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Washington DC flight facts

What you need to know

Alternative flights from the UK to Washington DC

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Washington DC

23 / Sep / 2025 is currently the lowest priced day of the year to fly the Cardiff/Washington DC route. There are around 40 flights on any given week from the UK to Washington DC and the cheapest month to fly right now is September.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

-3 °C

AVG

13 °C

HIGHEST

31 °C

Rainfall (mm)
LOWEST

73 mm

AVG

91.9 mm

HIGHEST

126 mm

Key facts about Washington DC

How to get cheap flights from Cardiff to Washington DC

Tips and advice from our flight experts

Your flight from Cardiff to Washington DC should take about 12 hrs 55 mins. We've gone through all 40 of the weekly flights to or via Washington DC, operated by two airlines, to help you compare flight prices and times. At the moment, the cheapest flight is £616.

Virgin Atlantic, Virgin Atlantic & KLM are the most popular airlines for flying from Cardiff to Washington DC. Adjust your search options to look by month, and see how much you could save if you fly during low season.

Washington DC actually has two airports to choose from – but Washington DC Washington Dulles International Airport (IAD) is the usually the cheapest option. If you need to fly into a specific airport, adjust your search to focus on those flights. The most popular airlines include Virgin Atlantic, Virgin Atlantic & KLM.

But if you can't find one which is right for you, try looking at flights to other cities in the USA to check out some other options.

Other popular destinations near Washington DC

Where other people are flying to

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