Question 1

What is the cheapest flight from Chicago O'Hare Intl Airport to London?

Accepted Answer

In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to London was $334 for a round-trip ticket. <a href='/flight-routes/Chicago-O-Hare-Intl-ORD/London-YXU'>Visit our flight page for the latest deals!>/a>

Question 2

Do I need a passport to fly between Chicago and London?

Accepted Answer

A passport is required to fly from Chicago to London. <a href='/flight-routes/Chicago-O-Hare-Intl-ORD/London-YXU'>Visit our flight page for the latest deals!>/a>

Question 3

Which airports will I be using when flying from Chicago to London?

Accepted Answer

On your way to London, you’ll fly out from Chicago O'Hare Intl. You’ll be landing at London. <a href='/flight-routes/Chicago-O-Hare-Intl-ORD/London-YXU'>Visit our flight page for the latest deals!>/a>

Question 4

Which aircraft models fly most regularly from Chicago to London?

Accepted Answer

We unfortunately don’t have that data for this specific route.

Question 5

How does KAYAK find such low prices on flights from Chicago to London?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to London. <a href='/flight-routes/Chicago-O-Hare-Intl-ORD/London-YXU'>Visit our flight page for the latest deals!>/a>

Question 6

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to London?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Chicago is likely to change within 7 days, so travelers know whether to wait or book now. <a href='/flight-routes/Chicago-O-Hare-Intl-ORD/London-YXU'>Visit our flight page for the latest deals!>/a>

Question 7

What is the Hacker Fare option on flights from Chicago to London?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Chicago with another airline. Booking your flights between Chicago and YXU can sometimes prove cheaper using this method. <a href='/flight-routes/Chicago-O-Hare-Intl-ORD/London-YXU'>Visit our flight page for the latest deals!>/a>

Question 8

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to London?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. <a href='/flight-routes/Chicago-O-Hare-Intl-ORD/London-YXU'>Visit our flight page for the latest deals!>/a>

Question 9

Which airlines provide the cheapest flights from Chicago to London?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Chicago to London were found on WestJet ($334) and Air Canada ($558).

Question 10

Which airlines provide the cheapest flights from Chicago to London?

Accepted Answer

In the past 3 days, the cheapest round-trip tickets from Chicago to London were found on WestJet ($334) and Air Canada ($558).

Question 11

What are the most popular airlines flying to London?

Accepted Answer

The most popular airline among KAYAK users flying to London is United Airlines, followed by Air Canada and American Airlines.

ORD - YXU

$334 Find Cheap Flights from Chicago to London

KAYAK searches hundreds of travel sites at once for deals on flights to London

Everything you should know

Cheap Flights from Chicago to London (ORD-YXU)

Recent round-trip flight deals from Chicago to London

Recent one-way flight deals from Chicago to London

KAYAK's insights & trends for Chicago to London flights

Get data-powered insights and trends into flights from Chicago to London to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Chicago to London?

In the past 3 days, the cheapest round-trip tickets from Chicago to London were found on WestJet ($334) and Air Canada ($558).

Good to know

When to book flights from Chicago to London

FAQs for booking Chicago to London flights

What is the cheapest flight from Chicago O'Hare Intl Airport to London?

In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to London was $334 for a round-trip ticket.

Do I need a passport to fly between Chicago and London?

A passport is required to fly from Chicago to London.

Which airports will I be using when flying from Chicago to London?

On your way to London, you’ll fly out from Chicago O'Hare Intl. You’ll be landing at London.

Which aircraft models fly most regularly from Chicago to London?

We unfortunately don’t have that data for this specific route.

How does KAYAK find such low prices on flights from Chicago to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to London.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Chicago to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Chicago with another airline. Booking your flights between Chicago and YXU can sometimes prove cheaper using this method.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Information on your arrival and departure airports

Cabin class types available on flights to London

Complete your trip to London with a hotel stay or car rental

Find direct flights to and from Chicago and London

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in Chicago