Cheap flights from Chicago to London Heathrow

Q: What are the cheapest airlines?

JetBlue. These airlines usually offer the cheapest flights from Chicago to London Heathrow.

Q: Can I fly direct to London Heathrow?

Alaska Airlines, Finnair, British Airways, Iberia Airlines, Aer Lingus. You can fly non-stop from Chicago to London Heathrow with these airlines.

Q: What airlines fly indirectly?

Air Canada, Delta Air Lines, Lufthansa, Virgin Atlantic, KLM. These airlines fly from Chicago to London Heathrow, but you’ll have at least one layover.

Q: How long is the flight?

7 hrs 40 mins. This is the shortest flight time from Chicago to London Heathrow.

from as little as £498

2 nights in London, departing Chicago O'hare International Airport on 01 / Feb / 2025 with JetBlue (price found 10 hours ago)

Subject to availability, prices correct of the last 24 hours

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Cheap return flights from Chicago to London Heathrow

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The Chicago / London Heathrow route

All 6353 km of it

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London Heathrow flight facts

What you need to know

What are the cheapest airlines?

JetBlue

These airlines usually offer the cheapest flights from Chicago to London Heathrow.

Can I fly direct to London Heathrow?

Alaska Airlines
Finnair
British Airways
Iberia Airlines
Aer Lingus

You can fly non-stop from Chicago to London Heathrow with these airlines.

What airlines fly indirectly?

Air Canada
Delta Air Lines
Lufthansa
Virgin Atlantic
KLM

These airlines fly from Chicago to London Heathrow, but you’ll have at least one layover.

How long is the flight?

7 hrs 40 mins

This is the shortest flight time from Chicago to London Heathrow.

Alternative flights from the UK to London Heathrow

Check out prices for other routes

Chicago to London City Airport

from £542 pp

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Chicago to London Gatwick

from £511 pp

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Chicago to London Stansted

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Alternative flights from Chicago

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London from Chicago Midway Airport

from £959 pp

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London from Chicago O'hare International Airport

from £498 pp

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01 / Feb / 2025 is currently the lowest priced day of the year to fly the Chicago/London Heathrow route. There are around 98 flights on any given week from the UK to London Heathrow and the cheapest month to fly right now is February.

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 Chicago to London Heathrow

Tips and advice from our flight experts

JetBlue 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 98 direct and indirect flights connecting London and Chicago. On average, it takes 9 hrs 40 mins to fly the 6353 km between Chicago and London.

Prices vary throughout the year but, right now, the cheapest date to fly is 01 / Feb / 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.