Cheap flights from Chicago to London Heathrow from £373

from as little as £373

7 nights in London, departing Chicago O'hare International Airport on 09 / Sep / 2025 with Virgin Atlantic (price found 2 hours ago)

Subject to availability, prices correct of the last 24 hours
London Heathrow

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The Chicago / London Heathrow route

All 6353 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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London Heathrow

09 / Sep / 2025 is currently the lowest priced day of the year to fly the Chicago/London Heathrow route. There are around 54 flights on any given week from the UK to London Heathrow and the cheapest month to fly right now is September.

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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 to London Heathrow

Tips and advice from our flight experts

Virgin Atlantic tends to have the best prices on flights from Chicago to London Heathrow. But, remember that London Heathrow is only one of the airports in London – searching for flights from ‘Chicago’ to ‘London’ will give you more options, and possibly lower prices.

Every week, there are 54 direct and indirect flights connecting London and Chicago. On average, it takes 10 hrs 35 mins to fly the 6353 km between Chicago and London.

Prices vary throughout the year but, right now, the cheapest date to fly is 09 / Sep / 2025. If you're looking for a budget break to United Kingdom and are flexible on dates, search for flights by month to find the best offers.

Once you’ve made your flight selection, click through to the next page to complete your booking. You can also explore accommodation and car hire options in United Kingdom by using the tabs at the top of the page.

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