Cheap flights from Chicago O'hare International Airport to London Heathrow

from as little as £482

10 nights in London, departing Chicago O'hare International Airport on 24 / Oct / 2025 with Icelandair (price found 1 hour ago)

Subject to availability, prices correct of the last 24 hours
London Heathrow
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The Chicago O'hare International Airport / London Heathrow route

All 6348 km of it

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London Heathrow flight facts

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Alternative flights from the UK to London Heathrow

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Alternative flights from Chicago O'hare International Airport to London Heathrow

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London Heathrow

24 / Oct / 2025 is currently the lowest priced day of the year to fly the Chicago O'hare International Airport/London Heathrow route. There are around 45 flights on any given week from the UK to London Heathrow and the cheapest month to fly right now is October.

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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

How to get cheap flights from Chicago O'hare 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 Chicago O'hare International Airport to London Heathrow. Normally, the cheapest airline to fly with is British Airways 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, Alaska Airlines & Finnair are the most popular airlines to fly with, and British Airways is normally the cheapest.

About 45 direct and indirect flights go from Chicago O'hare International Airport to London Heathrow every week. But the prices fluctuate throughout the year. If you want to go during peak season, it's best to book early. Or you could try to find a last-minute deal.

Did you know you can compare accommodation prices too? If you need somewhere to stay in London, take a look at our hotel options to get an idea of prices.

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