In terms of precipitation, rainfall in Chicago ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What is the cheapest time of day to fly from YXU to CHI?

When flying from London, Ontario to Chicago, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from London to Chicago?

If you book a flight to Chicago from London, you will be flying from London, which is the city’s only airport. London (YXU) is located 8.6 km from the centre of London. There are 0 flights from London to Chicago per day from 0 different airlines.

Can I find deals for flights from London to Chicago that include hotel bookings?

Yes. In addition to deals on London to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from London to Chicago?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Chicago.

Can I find deals for business class flights from London to Chicago?

Yes. Cheapflights offers flight deals from London to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 348+ Cheap Flights from London, ON to Chicago

Cheap flight deals from London to Chicago

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from London to Chicago
Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 October 2026.

Thu 3/1210:00 a.m. -

2 stops33h 03m

Thu 10/125:35 a.m. -

1 stop10h 25m

Deal found 19/10C$ 678

Thu 12/116:40 a.m. -

3 stops27h 34m

Thu 19/117:50 p.m. -

2 stops20h 10m

Deal found 15/10C$ 921

Wed 2/129:05 p.m. -

3 stops35h 10m

Wed 9/128:30 a.m. -

3 stops23h 07m

Deal found 18/10C$ 941

Wed 2/123:20 p.m. -

1 stop5h 38m

Wed 9/124:30 p.m. -

1 stop4h 22m

Deal found 18/10C$ 949

Find flight deals from London to Chicago

Round-trip from	C$ 678
One-way from	C$ 348

3/12-10/12
3 total stops
43h 28m total
London to Chicago

Search Deals

29/11-31/12
3 total stops
52h 36m total
London to Chicago

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Sun 29/11

10:15 a.m.-1:51 p.m.

3 stops52h 36m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 348

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Sat 28/11

10:00 a.m.-12:43 a.m.

1 stop15h 43m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 508

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Sun 29/11

9:05 p.m.-9:23 a.m.

1 stop13h 18m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 653

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Thu 3/12

10:00 a.m.-12:59 a.m.

1 stop15h 59m

Chicago O'Hare Intl

Thu 10/12

5:35 a.m.-5:00 p.m.

1 stop10h 25m

C$ 728

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Tue 16/2

7:10 a.m.-3:56 p.m.

1 stop9h 46m

Chicago O'Hare Intl

Wed 24/2

6:00 a.m.-2:05 p.m.

2 stops31h 05m

C$ 831

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Thu 12/11

6:40 a.m.-5:13 a.m.

2 stops23h 33m

Chicago O'Hare Intl

Thu 19/11

7:50 p.m.-5:00 p.m.

2 stops20h 10m

C$ 936

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Wed 2/12

9:05 p.m.-7:15 a.m.

3 stops35h 10m

Chicago O'Hare Intl

Wed 9/12

8:30 a.m.-8:37 a.m.

3 stops23h 07m

C$ 941

Quickest round-trip

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Wed 2/12

3:20 p.m.-7:58 p.m.

1 stop5h 38m

Chicago O'Hare Intl

Wed 9/12

4:30 p.m.-9:52 p.m.

1 stop4h 22m

C$ 949

LondonChicago

YXU London - ORD Chicago O'Hare Intl

YXUORD

London

Thu 12/11

3:25 p.m.-7:58 p.m.

1 stop5h 33m

Chicago O'Hare Intl

Thu 19/11

8:45 a.m.-2:42 p.m.

1 stop4h 57m

C$ 1,086

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/10

Sorted by cheapest first

Best time to book a flight from London to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from London with our price prediction graph.

YXU-CHI

YXU-ORD

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Chicago

YXU-CHI

YXU-ORD

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly from for flights from London to Chicago?
If you book a flight to Chicago from London, you will be flying from London, which is the city’s only airport. London (YXU) is located 8.6 km from the centre of London. There are 0 flights from London to Chicago per day from 0 different airlines.
Can I find deals for flights from London to Chicago that include hotel bookings?
Yes. In addition to deals on London to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from London to Chicago?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Chicago.
Can I find deals for business class flights from London to Chicago?
Yes. Cheapflights offers flight deals from London to Chicago by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Deals for London to Chicago flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London to Chicago?

Cheapflights helps you find that perfect flight to Chicago from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Chicago with no change fees?

Certainly. Search results for flights to Chicago from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from London to Chicago become cheaper?

Yes, Cheapflights offers price alerts on London to Chicago flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from London, ON to Chicago from C$ 348

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Chicago

Cheapest flights from London to ChicagoExplore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 October 2026.

Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 October 2026.

Best flights from London to ChicagoDiscover carefully curated flight deals from London to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Discover carefully curated flight deals from London to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Last-minute flights from London to ChicagoDiscover last-minute flight deals from London to Chicago. Data last updated 19 October 2026 and is based on user searches.

Discover last-minute flight deals from London to Chicago. Data last updated 19 October 2026 and is based on user searches.

One-way flights from London to ChicagoSearch for one-way flight options from London to Chicago. Find affordable one-way fares based on user searches. Data last updated 19 October 2026.

Search for one-way flight options from London to Chicago. Find affordable one-way fares based on user searches. Data last updated 19 October 2026.

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Best time to book a flight from London to Chicago

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Cheapflights Insights

Related info for your journey

What airport do you fly from for flights from London to Chicago?

Can I find deals for flights from London to Chicago that include hotel bookings?

How can I find direct flights from London to Chicago?

Can I find deals for business class flights from London to Chicago?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Chicago

See prices for flight routes from nearby airports that may be better suited for you.

Other flights to Chicago

Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 19 October 2026.

Complete your trip

Complete your trip to Chicago by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to Illinois

Book a non-stop flight to one of these other cities located in Illinois.

Search flights from London to Chicago by cabin class

Find flights from London to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.

London and Chicago flights

Browse other London and Chicago flight options. Last updated on 19 October 2026.

Other flights from London

Browse through other flights departing from London. Flights are based on user searches made on Cheapflights and were last updated on 19 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Fly with Cheapflights

How does Cheapflights help users find flights from London to Chicago?

Why should you use Cheapflights to find cheap flight tickets from London to Chicago?

Can Cheapflights find flights from London to Chicago with no change fees?

Can Cheapflights notify me if prices for flights from London to Chicago become cheaper?

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Cheapest flights from London to Chicago
Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 October 2026.

Best flights from London to Chicago
Discover carefully curated flight deals from London to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Last-minute flights from London to Chicago
Discover last-minute flight deals from London to Chicago. Data last updated 19 October 2026 and is based on user searches.

One-way flights from London to Chicago
Search for one-way flight options from London to Chicago. Find affordable one-way fares based on user searches. Data last updated 19 October 2026.