$635 Cheap United flights London (LHR) to Chicago (ORD)

View $635 flight on Wed, Sep 23, 2026Opens in a new window

$635 Cheap United flights London (LHR) to Chicago (ORD)

Prices were available within the past 7 days and start at $635 for one-way flights and $861 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Apr 28 - Mon, May 4
LHR
London
ORD
Chicago
$861 Roundtrip, found 11 hours ago
$861
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Apr 28 from London to Chicago, returning Mon, May 4, priced at $861 found 11 hours ago
United
Tue, Apr 28 - Mon, May 4
LHR
London
ORD
Chicago
$868 Roundtrip, found 12 hours ago
$868
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Apr 28 from London to Chicago, returning Mon, May 4, priced at $868 found 12 hours ago

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

February is typically the cheapest month to fly

From $461 - $740 per traveler.

Travel information

Origin airport
Heathrow
Destination airport
O'Hare Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic
Popular airline
Iberia
Distance
6307 km
Average flight time
2 hours 52 mins

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