Cheap flights from Washington DC Washington Dulles International Airport to London Heathrow

Q: What are the cheapest airlines?

Air Canada, Delta Air Lines, Icelandair, KLM, Virgin Atlantic. These airlines usually offer the cheapest flights from Washington DC Washington Dulles International Airport to London Heathrow.

Q: Can I fly direct to London Heathrow?

Delta Air Lines, KLM, Virgin Atlantic, Iberia Airlines, British Airways. You can fly non-stop from Washington DC Washington Dulles International Airport to London Heathrow with these airlines.

Q: What airlines fly indirectly?

Air Canada, Lufthansa, Icelandair. These airlines fly from Washington DC Washington Dulles International Airport to London Heathrow, but you’ll have at least one layover.

Q: How long is the flight?

7 hrs 10 mins. This is the shortest flight time from Washington DC Washington Dulles International Airport to London Heathrow.

from as little as £452

20 nights in London, departing Washington DC Washington Dulles International Airport on 31 / Jan / 2025 with Icelandair (price found 37 hours ago)

Subject to availability, prices correct of the last 24 hours

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Cheap return flights from Washington DC Washington Dulles International Airport to London Heathrow

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The Washington DC Washington Dulles International Airport / London Heathrow route

All 5906 km of it

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London Heathrow flight facts

What you need to know

What are the cheapest airlines?

Air Canada
Delta Air Lines
Icelandair
KLM
Virgin Atlantic

These airlines usually offer the cheapest flights from Washington DC Washington Dulles International Airport to London Heathrow.

Can I fly direct to London Heathrow?

Delta Air Lines
KLM
Virgin Atlantic
Iberia Airlines
British Airways

You can fly non-stop from Washington DC Washington Dulles International Airport to London Heathrow with these airlines.

What airlines fly indirectly?

Air Canada
Lufthansa
Icelandair

These airlines fly from Washington DC Washington Dulles International Airport to London Heathrow, but you’ll have at least one layover.

How long is the flight?

7 hrs 10 mins

This is the shortest flight time from Washington DC Washington Dulles International Airport to London Heathrow.

Alternative flights from Washington DC Washington Dulles International Airport

You might find cheaper flights nearby

London City Airport from Washington DC Washington Dulles International Airport

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London Gatwick from Washington DC Washington Dulles International Airport

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31 / Jan / 2025 is currently the lowest priced day of the year to fly the Washington DC Washington Dulles International Airport/London Heathrow route. There are around 132 flights on any given week from the UK to London Heathrow and the cheapest month to fly right now is January.

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

Min / Max Temperature (°C)

LOWEST

2 °C

AVG

11 °C

HIGHEST

24 °C

Rainfall (mm)

LOWEST

38.1 mm

AVG

52.5 mm

HIGHEST

66 mm

Key facts about London Heathrow

Currency

British pound

Language

English

Timezone

0 hrs behind GMT

How to get cheap flights from Washington DC Washington Dulles International Airport to London Heathrow

Tips and advice from our flight experts

With Netflights, it's easy to find a great deal on flights from Washington DC Washington Dulles International Airport to London Heathrow. Normally, the cheapest airline to fly with is Icelandair so look out for their flights in your search results – but be sure to weigh up all your options, to see which flight is best for you.

Bargain-hunters should check when public holidays are in London, as prices are likely to be higher. Air Canada, Delta Air Lines & KLM are the most popular airlines to fly with, and Icelandair is normally the cheapest.

At the other end of the spectrum, flights in high season are very expensive. But you might be able to get a good last-minute deal. Whenever you fly, you'll have plenty of choice. There are 132 flights every week from Washington DC Washington Dulles International Airport to or via London Heathrow.

You can book accommodation with Netflights too. We've got lots of options, from hotels handily located near the airport, to places designed for longer getaways.