$498 Cheap United flights Chicago (ORD) to London (LHR)

View $498 flight on Tue, Mar 3, 2026Opens in a new window

$498 Cheap United flights Chicago (ORD) to London (LHR)

Prices were available within the past 7 days and start at $498 for one-way flights and $622 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Mar 3 - Tue, Mar 24
ORD
Chicago
LHR
London
$622 Roundtrip, found 1 day ago
$622
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 3 from Chicago to London, returning Tue, Mar 24, priced at $622 found 1 day ago
United
Tue, Feb 10 - Tue, Feb 17
ORD
Chicago
LHR
London
$626 Roundtrip, found 3 days ago
$626
Roundtrip
found 3 days ago
Select United flight, departing Tue, Feb 10 from Chicago to London, returning Tue, Feb 17, priced at $626 found 3 days ago
United
Tue, Feb 10 - Tue, Feb 17
ORD
Chicago
LHR
London
$628 Roundtrip, found 3 days ago
$628
Roundtrip
found 3 days ago
Select United flight, departing Tue, Feb 10 from Chicago to London, returning Tue, Feb 17, priced at $628 found 3 days ago
United
Tue, Mar 3 - Tue, Mar 24
ORD
Chicago
LHR
London
$629 Roundtrip, found 1 day ago
$629
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 3 from Chicago to London, returning Tue, Mar 24, priced at $629 found 1 day ago
United
Tue, Feb 10 - Tue, Feb 17
ORD
Chicago
LHR
London
$633 Roundtrip, found 3 days ago
$633
Roundtrip
found 3 days ago
Select United flight, departing Tue, Feb 10 from Chicago to London, returning Tue, Feb 17, priced at $633 found 3 days ago
United
Tue, Mar 3 - Tue, Mar 24
ORD
Chicago
LHR
London
$643 Roundtrip, found 1 day ago
$643
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 3 from Chicago to London, returning Tue, Mar 24, priced at $643 found 1 day ago
United
Tue, Feb 10 - Tue, Feb 17
ORD
Chicago
LHR
London
$653 Roundtrip, found 3 days ago
$653
Roundtrip
found 3 days ago
Select United flight, departing Tue, Feb 10 from Chicago to London, returning Tue, Feb 17, priced at $653 found 3 days ago
United
Tue, Mar 3 - Tue, Mar 24
ORD
Chicago
LHR
London
$654 Roundtrip, found 1 day ago
$654
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 3 from Chicago to London, returning Tue, Mar 24, priced at $654 found 1 day ago
United
Tue, Mar 3 - Tue, Mar 24
ORD
Chicago
LHR
London
$655 Roundtrip, found 1 day ago
$655
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 3 from Chicago to London, returning Tue, Mar 24, priced at $655 found 1 day ago
United
Tue, Mar 3 - Fri, Mar 27
ORD
Chicago
LHR
London
$657 Roundtrip, found 1 day ago
$657
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 3 from Chicago to London, returning Fri, Mar 27, priced at $657 found 1 day ago
United
Tue, Mar 3 - Tue, Mar 24
ORD
Chicago
LHR
London
$659 Roundtrip, found 1 day ago
$659
Roundtrip
found 1 day ago
Select United flight, departing Tue, Mar 3 from Chicago to London, returning Tue, Mar 24, priced at $659 found 1 day ago

Find the cheapest month to fly from Chicago (ORD) to London (LHR)

November is typically the cheapest month to fly

From $449 - $717 per traveler.

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gatwick LGW. Cheapest option available. Average driving time to city center is 52 minutes. Flights from $517
LGW
Gatwick
Cheapest
Average driving time to city center52 min
Flights from $517

Travel information

Origin airport
O'Hare Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic
Popular airline
Icelandair
Distance
6307 km
Average flight time
13 hours 55 mins

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