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Find cheap flights from Illinois to London Heathrow Airport from $284

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Heathrow departing on 4/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
вс. 4/28
вс. 5/5

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Good to know

Low season

January

High season

June

Cheapest flight

$284
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 47% increase in price.
Flight from Chicago O'Hare Airport to London Heathrow Airport

FAQs for booking Illinois to London Heathrow Airport flights

  • How does KAYAK find such low prices on flights from Illinois to London Heathrow Airport?

    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 Illinois to London Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Illinois 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 Illinois to London Heathrow Airport?

    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 Heathrow Airport with an airline and back to Illinois with another airline.

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

    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 Heathrow Airport from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Illinois to London Heathrow Airport?

Find which airlines fly direct from Illinois to Heathrow, which days they fly and book direct flights.

Nonstop departures

Illinois to London Heathrow

Monday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Tuesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Wednesday

ANA, AccesRail, Aegean Airlines, +92 more

ANA, AccesRail, +93 more

Thursday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights

Nonstop returns

London Heathrow to Illinois

Monday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Tuesday

ANA, AccesRail, Aegean Airlines, +89 more

ANA, AccesRail, +90 more

Wednesday

ANA, AccesRail, Aegean Airlines, +92 more

ANA, AccesRail, +93 more

Thursday

ANA, AccesRail, Aegean Airlines, +86 more

ANA, AccesRail, +87 more

Friday

ANA, AccesRail, Aegean Airlines, +93 more

ANA, AccesRail, +94 more

Saturday

ANA, AccesRail, Aegean Airlines, +88 more

ANA, AccesRail, +89 more

Sunday

ANA, AccesRail, Aegean Airlines, +91 more

ANA, AccesRail, +92 more

See more direct flights
See more direct flights

Book cheap flights from Illinois to London

Recent round-trip flight deals

4/21вс.
1 stopScandinavian Airlines
17h 45mORD-LHR
4/30вт.
1 stopScandinavian Airlines
14h 00mLHR-ORD
$542
4/22пн.
1 stopTAP AIR PORTUGAL
12h 45mORD-LHR
4/30вт.
1 stopTAP AIR PORTUGAL
26h 20mLHR-ORD
$550
4/18чт.
nonstopFinnair
7h 40mORD-LHR
4/24ср.
nonstopFinnair
8h 40mLHR-ORD
$568
4/29пн.
1 stopIcelandair
10h 25mORD-LHR
5/3пт.
1 stopIcelandair
11h 15mLHR-ORD
$594
4/28вс.
1 stopIcelandair
10h 25mORD-LHR
5/13пн.
1 stopIcelandair
26h 55mLHR-ORD
$595
4/9вт.
1 stopAer Lingus
11h 20mORD-LHR
4/16вт.
1 stopAer Lingus
11h 10mLHR-ORD
$626
4/30вт.
1 stopAer Lingus
10h 30mORD-LHR
5/10пт.
1 stopAer Lingus
12h 20mLHR-ORD
$627
4/23вт.
nonstopFinnair
7h 45mORD-LHR
5/10пт.
1 stopFinnair
15h 55mLHR-ORD
$638
4/20сб.
1 stop
34h 51mSTL-LHR
5/3пт.
1 stop
13h 00mLHR-STL
$647
5/1ср.
1 stop
11h 06mORD-LHR
5/10пт.
1 stop
16h 05mLHR-ORD
$654

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Recent one-way flight deals

4/13сб.
3 stops
57h 50mORD-LHR
$284
4/24ср.
2 stops
20h 14mORD-LHR
$288
8/7ср.
1 stopIcelandair
18h 55mORD-LHR
$292
8/14ср.
1 stopIcelandair
10h 30mORD-LHR
$300
4/14вс.
1 stopTAP AIR PORTUGAL
22h 55mORD-LHR
$332
4/15пн.
1 stopTAP AIR PORTUGAL
34h 20mORD-LHR
$334
9/16пн.
1 stopScandinavian Airlines
15h 55mORD-LHR
$361
4/24ср.
2 stopsScandinavian Airlines
16h 45mORD-LHR
$366
5/1ср.
1 stopJetBlue
16h 02mORD-LHR
$387
4/30вт.
1 stopJetBlue
13h 35mORD-LHR
$397

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Last minute flights from Illinois to Heathrow

Last minute flight, train and bus deals

4/1пн.
multi-stopTAP AIR PORTUGAL
22h 00mORD-LHR
4/9вт.
multi-stopTAP AIR PORTUGAL
27h 25mLHR-ORD
$562
4/1пн.
multi-stopTAP AIR PORTUGAL
12h 45mORD-LHR
4/10ср.
multi-stopTAP AIR PORTUGAL
16h 10mLHR-ORD
$598
3/30сб.
multi-stopAer Lingus
11h 55mORD-LHR
4/7вс.
multi-stopAer Lingus
13h 15mLHR-ORD
$612
4/3ср.
multi-stopScandinavian Airlines
14h 15mORD-LHR
4/24ср.
multi-stopScandinavian Airlines
27h 25mLHR-ORD
$618
4/3ср.
multi-stopScandinavian Airlines
16h 45mORD-LHR
4/24ср.
multi-stopScandinavian Airlines
14h 00mLHR-ORD
$625
4/3ср.
multi-stopAer Lingus
12h 35mORD-LHR
4/7вс.
multi-stopAer Lingus
13h 15mLHR-ORD
$628
3/31вс.
nonstopUnited Airlines
8h 10mORD-LHR
4/11чт.
multi-stopUnited Airlines
13h 25mLHR-ORD
$649
3/31вс.
multi-stopUnited Airlines
10h 34mORD-LHR
4/11чт.
multi-stopUnited Airlines
12h 25mLHR-ORD
$651
3/31вс.
multi-stopAustrian Airlines
35h 00mORD-LHR
4/12пт.
multi-stopAustrian Airlines
13h 20mLHR-ORD
$677
3/31вс.
multi-stopAustrian Airlines
16h 00mORD-LHR
4/8пн.
multi-stopAustrian Airlines
28h 15mLHR-ORD
$897

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