Search & Compare - Chicago to London Flights & Tickets

Lowest Prices
Uncover the best deals on ORD to LHR flights by comparing fares from hundreds of airlines and agencies.
New Deals Everyday
Get the best prices on ORD to LHR flights—we update our fares daily so you never miss a saving.
Best Travel Options
Compare hundreds of ORD to LHR flights and secure the best deals—we never add any service fees.

Cheap flights from Chicago to London (ORD to LHR)

Looking for a cheap last-minute deal or the best round-trip flight from Chicago to London? Find the biggest savings on one-way and round-trip tickets right here.

Good to know

Useful information for finding cheap flights from Chicago O'Hare International to London Heathrow and booking your next trip

Cheapest Round Trip Flight

$539

AC Air Canada • 1 stop • 17h 2m

Sep 28 – Oct 03

The cheapest round trip flight from Chicago O'Hare International to London Heathrow is currently $539

🔍 Search Flights

Cheapest Direct Flight

$689

LH Lufthansa Airlines • nonstop • 13h 40m

Sep 28

The cheapest nonstop flight from Chicago O'Hare International to London Heathrow is currently $689

🔍 Search Flights

Fastest Flight

12h 15m

The fastest nonstop flight from Chicago O'Hare International to London Heathrow takes 12h 15m

Recent airfare deals on Chicago to London

Sep 28 - Oct 03, Economy
AC
Chicago → London
17h 2m
2:08 PM - 6:30 AM • 1 stop
AC
Chicago → London
20h 6m
2:05 PM - 8:11 PM • 1 stop
$539
Air Canada
Sep 28 - Oct 03, Economy
AC
Chicago → London
17h 2m
2:08 PM - 6:30 AM • 1 stop
UA
Chicago → London
15h 10m
2:10 PM - 5:20 PM • nonstop
$539
Air Canada
Sep 28 - Oct 03, Economy
AC
Chicago → London
17h 15m
2:00 PM - 6:35 AM • 1 stop
UA
Chicago → London
15h 10m
2:10 PM - 5:20 PM • nonstop
$543
Air Canada
Sep 28 - Oct 03, Economy
AC
Chicago → London
14h 13m
2:08 PM - 6:30 AM • 1 stop
U2
Chicago → London
22h 33m
9:25 AM - 4:43 PM • 2 stops
$575
Air Canada
Sep 28 - Oct 03, Economy
UA
Chicago → London
17h 2m
2:08 PM - 6:30 AM • 1 stop
UA
Chicago → London
15h
8:30 AM - 11:30 AM • nonstop
$627
United Airlines
Sep 28 - Oct 03, Economy
UA
Chicago → London
17h 2m
2:08 PM - 6:30 AM • 1 stop
VS
Chicago → London
23h 56m
12:55 PM - 9:31 PM • 1 stop
$2053
United Airlines

Facts to know while booking flights from Chicago to London

What are the airports in Chicago?
MDW,ORD
What’s the most popular airline flying from ORD to LHR?
The most popular airline flying from Chicago to London are
Can I fly from ORD to LHR non-stop?
Yes, you can fly ORD to LHR non-stop on
Which airlines fly nonstop between Chicago and London?
The non-stop flights between Chicago and London are .
What’s the earliest departure time from ORD to LHR Airport?
The earliest flight leaves ORD at 2:00 pm and lands in LHR - London Heathrow
What are the airports in London?
LHR
Can I make changes to my Chicago to London flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ORD to LHR?
Read the fare rules of the Chicago to London air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Chicago and London?
operate flights between Chicago and London
How long does a flight from Chicago to London take?
It takes approximately 8 hour to fly non-stop from ORD to LHR, which is 3952.81 miles by air.
Which airlines provide the cheapest flights from Chicago (ORD) to London (LHR) ?
In the past couple of days, the cheapest tickets to LHR from ORD were found on ('AC') : USD 575
Do I need a passport to fly between ORD and LHR?
Yes
What’s the latest departure time from ORD to LHR ?
The last flight leaves ORD at 5:4500 pm

Essential Information for Booking Flights from Chicago (ORD) - AI Insights

What's the cheapest airline from ord to lhr?
United Airlines (UA) offers the most affordable flights from Chicago O'Hare to London Heathrow, with fares starting around $600 for a roundtrip ticket for one person in Economy class.
What's the popular airline to fly from ord to lhr?
Iberia Airlines (IB), WestJet Airlines (WS), Air France (AF), Turkish Airlines (TK), Korean Air (KE), and more options for affordable flights from Chicago O'Hare International to London Heathrow.
What's the cheapest day of the week to fly from ord to lhr?
Thursday is the cheapest day to fly from Chicago O'Hare to London Heathrow.
What's the cheapest month to fly from ord to lhr?
March is the cheapest month to fly from Chicago O’Hare to London Heathrow.
What is the lowest price airline for a round-trip flight from Chicago O'Hare to London Heathrow?
United Airlines (UA) typically offers the lowest fares for this route.
Which airlines are known for offering competitive airfare from Chicago O'Hare to London Heathrow?
Iberia Airlines (IB), WestJet Airlines (WS), Air France (AF), Turkish Airlines (TK), Korean Air (KE), and United Airlines (UA) are frequently cited as airlines with competitive fares.
When is it generally cheaper to fly from Chicago O'Hare to London Heathrow?
March is generally considered a good time to find the lowest airfare, particularly during the early part of the month.

Flights from Chicago to London

Origin Airport Chicago O'Hare International , Chicago, US
Destination Airport London Heathrow , London, GB
Distance miles

Popular Airlines

Turkish Airlines - TK
Delta Airline, DL
Air France-AF
Virgin Atlantic (VS)
TAP Air Portugal Airline (TP)
LOT Polish Airlines (LO)
United Airlines, UA
Lufthansa Airline (LH)
American Airlines, AA
Air Canada-AC
Alaska Airlines -AS
Iberia airline

Popular Origin & Destination

Get Fare Drop Alert
Be the first to know when fares drop for the Chicago (ORD) to London (LHR)
Terms and Conditions*