Find cheap flights from Illinois to London Heathrow Airport

LHR

Find cheap flights from Illinois to London Heathrow Airport

Round-trip
Economy
Boston (BOS)
London Heathrow
Thu 8/6
Thu 8/13
Any month
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Search hundreds of travel sites at once for deals on flights to London Heathrow Airport

Good to know

Low season

May Best time to beat the crowds with an average 12% drop in price.

High season

June Most popular time to fly with an average 18% increase in price.

Average price of a round-trip

$1123 (avg. price over the last 2 weeks)

Good deal for a round-trip

$480 or less

FAQs for booking Illinois to London Heathrow Airport flights

Which airlines have a flexible cancellation policy for flights from Illinois to London Heathrow due to COVID-19?

How does KAYAK find such low prices 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?

What is the Hacker Fare option on flights from Illinois to London Heathrow Airport?

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

Top 5 airlines serving Illinois to London Heathrow

Scores according to KAYAK customer reviews

8.1
Virgin Atlantic
Overall score based on 1,566 reviews
8.3
Boarding
7.8
Comfort
8.6
Crew
8.0
Entertainment
7.8
Food
Airline reviews
Read more about Virgin Atlantic

Book cheap flights from Illinois to London Heathrow Airport

Recent round-trip flight deals

12/2
Wed
2 stops
Multiple Airlines
22h 55m
ORD - LHR
12/5
Sat
2 stops
Multiple Airlines
25h 10m
LHR - ORD
11/10
Tue
1 stop
TAP AIR PORTUGAL
23h 40m
ORD - LHR
11/18
Wed
1 stop
TAP AIR PORTUGAL
25h 50m
LHR - ORD
10/13
Tue
1 stop
Icelandair
10h 15m
ORD - LHR
11/18
Wed
1 stop
Icelandair
11h 05m
LHR - ORD
11/12
Thu
1 stop
KLM
10h 35m
MDW - LHR
11/19
Thu
1 stop
KLM
14h 30m
LHR - MDW
11/1
Sun
1 stop
Delta
13h 11m
MDW - LHR
11/19
Thu
2 stops
Delta
15h 54m
LHR - MDW
9/21
Mon
1 stop
Virgin Atlantic
11h 20m
MDW - LHR
9/29
Tue
1 stop
Virgin Atlantic
14h 50m
LHR - MDW
8/9
Sun
2 stops
Multiple Airlines
20h 02m
ORD - LHR
8/18
Tue
3 stops
Multiple Airlines
30h 27m
LHR - ORD
9/12
Sat
1 stop
Aeromexico
12h 30m
MDW - LHR
10/4
Sun
1 stop
Aeromexico
14h 24m
LHR - MDW
11/10
Tue
1 stop
TAP AIR PORTUGAL
24h 45m
ORD - LHR
11/18
Wed
1 stop
TAP AIR PORTUGAL
25h 50m
LHR - ORD
11/11
Wed
1 stop
Icelandair
19h 00m
ORD - LHR
11/18
Wed
1 stop
Icelandair
11h 05m
LHR - ORD
8/9
Sun
2 stops
Multiple Airlines
20h 02m
ORD - LHR
8/20
Thu
3 stops
Multiple Airlines
30h 27m
LHR - ORD
1/12
Tue
1 stop
TAP AIR PORTUGAL
19h 35m
ORD - LHR
1/17
Sun
1 stop
TAP AIR PORTUGAL
14h 20m
LHR - ORD
10/12
Mon
1 stop
Icelandair
10h 15m
ORD - LHR
10/23
Fri
1 stop
Icelandair
11h 15m
LHR - ORD
8/9
Sun
2 stops
Multiple Airlines
20h 02m
ORD - LHR
8/25
Tue
3 stops
Multiple Airlines
30h 27m
LHR - ORD
11/29
Sun
1 stop
TAP AIR PORTUGAL
14h 45m
ORD - LHR
12/5
Sat
1 stop
TAP AIR PORTUGAL
24h 25m
LHR - ORD
10/18
Sun
1 stop
Icelandair
18h 50m
ORD - LHR
10/23
Fri
1 stop
Icelandair
11h 15m
LHR - ORD
11/29
Sun
1 stop
Multiple Airlines
14h 45m
ORD - LHR
12/10
Thu
2 stops
Multiple Airlines
27h 45m
LHR - ORD
12/1
Tue
1 stop
TAP AIR PORTUGAL
19h 35m
ORD - LHR
12/31
Thu
1 stop
TAP AIR PORTUGAL
14h 20m
LHR - ORD
10/13
Tue
1 stop
Icelandair
18h 50m
ORD - LHR
10/22
Thu
1 stop
Icelandair
11h 15m
LHR - ORD
10/19
Mon
2 stops
Multiple Airlines
19h 35m
ORD - LHR
10/26
Mon
2 stops
Multiple Airlines
27h 45m
LHR - ORD

Recent one-way flight deals

7/31
Fri
2 stops
Multiple Airlines
19h 07m
ORD - LHR
8/17
Mon
3 stops
Multiple Airlines
22h 25m
ORD - LHR
8/24
Mon
3 stops
Multiple Airlines
27h 25m
ORD - LHR
9/15
Tue
2 stops
Multiple Airlines
40h 00m
ORD - LHR
8/16
Sun
3 stops
Multiple Airlines
41h 05m
ORD - LHR
9/5
Sat
2 stops
Multiple Airlines
45h 05m
ORD - LHR
9/8
Tue
2 stops
Multiple Airlines
40h 00m
ORD - LHR
9/12
Sat
1 stop
Aeromexico
12h 30m
MDW - LHR
9/7
Mon
3 stops
Multiple Airlines
27h 25m
ORD - LHR
9/12
Sat
3 stops
Multiple Airlines
26h 30m
ORD - LHR
8/20
Thu
3 stops
Multiple Airlines
44h 35m
ORD - LHR
9/8
Tue
2 stops
Multiple Airlines
40h 00m
ORD - LHR
9/8
Tue
3 stops
Multiple Airlines
39h 46m
ORD - LHR
9/11
Fri
3 stops
Multiple Airlines
46h 20m
ORD - LHR
9/19
Sat
3 stops
Multiple Airlines
26h 30m
ORD - LHR
9/8
Tue
1 stop
Aeromexico
15h 30m
MDW - LHR
9/8
Tue
1 stop
Virgin Atlantic
11h 55m
MDW - LHR
9/1
Tue
3 stops
Multiple Airlines
58h 08m
ORD - LHR
9/9
Wed
1 stop
Delta
15h 20m
MDW - LHR
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

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