C$ 623 Find cheap flights from Illinois to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 4/1. 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.
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In the last 7 days, travellers have searched 47,946,175 times on KAYAK, and here is why:

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FAQs for booking flights from Illinois to London

  • How does KAYAK find such low prices on flights from Illinois 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 Illinois to London.

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

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

    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 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?

    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 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?

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

Nonstop departures

Illinois to London

Monday

Air Canada,Avianca,Delta, +6 more

Air Canada,Avianca, +7 more

Tuesday

Air Canada,Avianca,Delta, +6 more

Air Canada,Avianca, +7 more

Wednesday

Air Canada,Avianca,Delta, +6 more

Air Canada,Avianca, +7 more

Thursday

Air Canada,Avianca,Delta, +7 more

Air Canada,Avianca, +8 more

Friday

Air Canada,Avianca,Delta, +6 more

Air Canada,Avianca, +7 more

Saturday

Air Canada,Air Transat,Avianca, +4 more

Air Canada,Air Transat, +5 more

Sunday

Air Canada,Air Transat,Avianca, +6 more

Air Canada,Air Transat, +7 more

See more nonstop flights

Nonstop returns

London to Illinois

Monday

Air Canada,Avianca,Delta, +6 more

Air Canada,Avianca, +7 more

Tuesday

Air Canada,Avianca,Delta, +6 more

Air Canada,Avianca, +7 more

Wednesday

Air Canada,Avianca,Delta, +6 more

Air Canada,Avianca, +7 more

Thursday

Air Canada,Avianca,Delta, +7 more

Air Canada,Avianca, +8 more

Friday

Air Canada,Avianca,Delta, +6 more

Air Canada,Avianca, +7 more

Saturday

Air Canada,Air Transat,Avianca, +4 more

Air Canada,Air Transat, +5 more

Sunday

Air Canada,Air Transat,Avianca, +6 more

Air Canada,Air Transat, +7 more

See more nonstop flights
See more nonstop flights

Book cheap flights from Illinois to London

Recent round-trip flight deals

5/1Sun
1 stop
17h 56mSTL-YXU
12/1Sun
2 stops
24h 34mYXU-STL
C$ 1,068
17/12Tue
2 stopsUnited Airlines
23h 45mSTL-YXU
19/12Thu
1 stopUnited Airlines
6h 11mYXU-STL
C$ 1,166
17/12Tue
2 stopsUnited Airlines
23h 45mSTL-YXU
19/12Thu
2 stopsUnited Airlines
6h 52mYXU-STL
C$ 1,188
3/1Fri
1 stop
5h 15mORD-YXU
10/1Fri
1 stop
5h 25mYXU-ORD
C$ 1,196
3/1Fri
1 stopUnited Airlines
6h 29mORD-YXU
10/1Fri
2 stopsUnited Airlines
23h 10mYXU-ORD
C$ 1,205
3/1Fri
2 stopsUnited Airlines
7h 50mORD-YXU
10/1Fri
2 stopsUnited Airlines
25h 00mYXU-ORD
C$ 1,219
4/1Sat
2 stopsUnited Airlines
7h 50mSTL-YXU
11/1Sat
2 stopsUnited Airlines
11h 46mYXU-STL
C$ 1,367
4/1Sat
2 stopsUnited Airlines
7h 50mSTL-YXU
11/1Sat
1 stopUnited Airlines
10h 21mYXU-STL
C$ 1,378
5/1Sun
2 stopsUnited Airlines
21h 40mSTL-YXU
12/1Sun
2 stopsUnited Airlines
11h 48mYXU-STL
C$ 1,473
5/1Sun
1 stopAir Canada
16h 25mSTL-YXU
12/1Sun
1 stopAir Canada
6h 11mYXU-STL
C$ 2,163

Search by stops

Search by airline

Search by price

Recent one-way flight deals

4/1Sat
1 stopUnited Airlines
5h 15mORD-YXU
C$ 623
5/1Sun
2 stopsUnited Airlines
16h 45mORD-YXU
C$ 625
4/1Sat
2 stops
36h 45mORD-YXU
C$ 635
5/1Sun
1 stopAir Canada
17h 20mORD-YXU
C$ 720
4/1Sat
2 stopsUnited Airlines
7h 50mSTL-YXU
C$ 749
4/1Sat
3 stops
44h 18mORD-YXU
C$ 1,249

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to London

Information on the airport you'll fly into in London

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