Find Cheap Flights from Chicago to London (CHI - LON)

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Fri 1/19
Fri 1/26
Any month
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Good to Know

Low Season:
March
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
22%
expected price increase
Average Price:
$967
(avg. price over the last 2 weeks)
Good Deal:
$645
or less (round trip)

When to Book Flights from Chicago to London

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $644 or less.
The cheapest flight from Chicago to London was found 90 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is March.
Morning departure is around 2% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Chicago to London Flights

How long does a flight from Chicago to London take?
An average nonstop flight takes 10h 40m, covering a distance of 3947 miles.
How many flights are there between Chicago and London?
There are 341 (nonstop) flights between Chicago and London per week, averaging 49 per day.
Which airlines provide the cheapest flights from Chicago to London?
In the past 3 days, the cheapest round-trip tickets were found on WOW air ($267) and Multiple Airlines ($327)
Do I need a passport to fly between Chicago and London?
Yes.
Which airlines fly most frequently between Chicago and London?
British Airways (6 times daily), American Airlines (5 times daily), Finnair (5 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Chicago to London?
For Chicago to London, Wednesday is the cheapest day to fly on average and Monday is the most expensive. Flying from London back to Chicago, the best deals are generally found on Friday, with Tuesday being the most expensive.

Book cheap flights from Chicago to London (round-trip)

Airports
Origin
Chicago
$267
only
$267
Destination
London
$336
only
$336
$267
only
$267
$327
only
$327
Wed, Feb 7
ORD
LGW
11h 40m
Mon, Feb 12
LGW
ORD
12h 50m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
ORD
KEF
Mediocre 2.6

Flight was 2 hours late, causing a missed flight. Baggage took 90 minutes to arrive. The airline provided no info on connections as hundreds of passengers stood around for an hour and then chaos reigned as all rushed to get rebooked in only two lines. Nobody got rebooked until the next day and had to stay overnight in hotels with a voucher that provided only minimal food after a 15 minute walk to a fast food restaurant. the following day we were rebooked to Copenhagen rather than Berlin, with no guarantee of a connecting flight. I was forced to buy another ticket on another carrier in order to make my own wedding.

TFS
KEF
Mediocre 2.0

Nothing!

The worst airline ever! Didn't knew how to check us in to our returning flight and we got left at the airport without no answers why did it happen. Didn't even offer to put us on the next flight! We had to purchase new tickets with different airline to come back home. Don't fly WOW Airlines!!!!

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

BOS
KEF
Mediocre 2.0

Nothing

Worst customer service experience of my life - they cancelled the flight only for people with connections and booked me to a week later.

DUB
KEF
Excellent 8.0

Comfortable seats, outlets to charge devices.

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

Wed, Apr 18
ORD
STN
18h 10m
Sat, Apr 28
STN
ORD
22h 10m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Feb 12
ORD
LGW
11h 40m
Wed, Feb 28
LGW
ORD
12h 35m
Trip: 17 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
MIA
KEF
Mediocre 2.0

Easy refund

Customer service, flight cancelled with no alternative offered

DUB
KEF
Excellent 8.0

Comfortable seats, outlets to charge devices.

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

KEF
BOS
Excellent 8.0

Comfortable seats

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

KEF
SXF
Mediocre 2.0

There was no rebooking to Berlin. WOW offered a flight to Copenhagen with no guarantee of a connection to Berlin.

Sun, Feb 25
ORD
LGW
11h 40m
Fri, Mar 2
LGW
ORD
12h 35m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
SFO
KEF
Good 6.0

customer service was nice, although not efficient (they double charged me for a second piece of luggage) i liked the larger seats

double charged for second piece of luggage

ORD
KEF
Mediocre 2.6

Flight was 2 hours late, causing a missed flight. Baggage took 90 minutes to arrive. The airline provided no info on connections as hundreds of passengers stood around for an hour and then chaos reigned as all rushed to get rebooked in only two lines. Nobody got rebooked until the next day and had to stay overnight in hotels with a voucher that provided only minimal food after a 15 minute walk to a fast food restaurant. the following day we were rebooked to Copenhagen rather than Berlin, with no guarantee of a connecting flight. I was forced to buy another ticket on another carrier in order to make my own wedding.

BOS
KEF
Mediocre 2.0

Nothing

Worst customer service experience of my life - they cancelled the flight only for people with connections and booked me to a week later.

DUB
KEF
Excellent 8.0

Comfortable seats, outlets to charge devices.

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

Tue, Apr 3
ORD
LGW
10h 45m
Tue, Apr 17
LGW
ORD
11h 05m
Trip: 15 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

KEF
BOS
Excellent 8.0

Comfortable seats

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

SFO
KEF
Good 6.0

customer service was nice, although not efficient (they double charged me for a second piece of luggage) i liked the larger seats

double charged for second piece of luggage

DUB
KEF
Excellent 8.0

Comfortable seats, outlets to charge devices.

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

BOS
KEF
Mediocre 2.0

Nothing

Worst customer service experience of my life - they cancelled the flight only for people with connections and booked me to a week later.

Wed, May 16
ORD
LTN
17h 25m
Tue, May 22
LTN
ORD
22h 10m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 18
ORD
LTN
23h 25m
Sat, Apr 28
LTN
ORD
22h 10m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Feb 5
ORD
LGW
11h 40m
Mon, Feb 12
LGW
ORD
12h 50m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

TFS
KEF
Mediocre 2.0

Nothing!

The worst airline ever! Didn't knew how to check us in to our returning flight and we got left at the airport without no answers why did it happen. Didn't even offer to put us on the next flight! We had to purchase new tickets with different airline to come back home. Don't fly WOW Airlines!!!!

DUB
KEF
Excellent 8.0

Comfortable seats, outlets to charge devices.

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

SFO
KEF
Good 6.0

customer service was nice, although not efficient (they double charged me for a second piece of luggage) i liked the larger seats

double charged for second piece of luggage

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

Tue, Apr 17
ORD
STN
23h 35m
Thu, Apr 26
STN
ORD
22h 10m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Jan 28
ORD
LGW
10h 40m
Tue, Jan 30
LGW
ORD
11h 15m
Trip: 3 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

KEF
BOS
Excellent 8.0

Comfortable seats

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

CDG
KEF
Mediocre 2.0

Flight cancelled due to overbooking, notification received while I was en route to the airport. Was assured I would be on the flight for the following day. Awoke next day and called airline to confirm, they stated my refund had been processed, I would not be on the flight, and there was nothing that they could do for me. I was forced to rent a car and take a completely different flight from another airport at a much higher price. Never again.

Sun, Apr 15
ORD
LTN
23h 25m
Sun, Apr 22
LTN
ORD
16h 10m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Feb 5
ORD
LGW
11h 50m
Fri, Mar 9
LGW
ORD
12h 35m
Trip: 33 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
KEF
BOS
Excellent 8.0

Comfortable seats

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

BOS
KEF
Mediocre 2.0

Nothing

Worst customer service experience of my life - they cancelled the flight only for people with connections and booked me to a week later.

FRA
KEF
Mediocre 2.0

This airline is disaster. They trielt live on the planet don’t give a &$!@ Made us buy new tickets for the following day for a type o on the ticket. They just didn’t care...

They kept me and my two year old in the plane for almost 4 hours and told us that we will take off every ten minutes, but obviously we never did. We got rebooked for the following day. They provided a small room to stay in and $7 wach for food. They treated us like a huge inconvenience. We had to pay for food, my husband had to take another day off work to come get us. This airline is shameless. We are spending more money to with a different air line next time.

KEF
SXF
Mediocre 2.0

There was no rebooking to Berlin. WOW offered a flight to Copenhagen with no guarantee of a connection to Berlin.

Mon, Apr 16
ORD
STN
18h 10m
Mon, Apr 23
STN
ORD
16h 10m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Feb 12
ORD
LGW
11h 50m
Tue, Mar 6
LGW
ORD
12h 40m
Trip: 23 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
SFO
KEF
Good 6.0

customer service was nice, although not efficient (they double charged me for a second piece of luggage) i liked the larger seats

double charged for second piece of luggage

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

DUB
KEF
Excellent 8.0

Comfortable seats, outlets to charge devices.

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

ORD
KEF
Mediocre 2.6

Flight was 2 hours late, causing a missed flight. Baggage took 90 minutes to arrive. The airline provided no info on connections as hundreds of passengers stood around for an hour and then chaos reigned as all rushed to get rebooked in only two lines. Nobody got rebooked until the next day and had to stay overnight in hotels with a voucher that provided only minimal food after a 15 minute walk to a fast food restaurant. the following day we were rebooked to Copenhagen rather than Berlin, with no guarantee of a connecting flight. I was forced to buy another ticket on another carrier in order to make my own wedding.

TFS
KEF
Mediocre 2.0

Nothing!

The worst airline ever! Didn't knew how to check us in to our returning flight and we got left at the airport without no answers why did it happen. Didn't even offer to put us on the next flight! We had to purchase new tickets with different airline to come back home. Don't fly WOW Airlines!!!!

Mon, Apr 16
ORD
STN
18h 10m
Mon, Apr 23
STN
ORD
16h 10m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Feb 19
ORD
LGW
11h 40m
Fri, Feb 23
LGW
ORD
12h 35m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
DUB
KEF
Excellent 8.0

Comfortable seats, outlets to charge devices.

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

SFO
KEF
Good 6.0

customer service was nice, although not efficient (they double charged me for a second piece of luggage) i liked the larger seats

double charged for second piece of luggage

MIA
KEF
Mediocre 2.0

Easy refund

Customer service, flight cancelled with no alternative offered

CDG
KEF
Mediocre 2.0

Flight cancelled due to overbooking, notification received while I was en route to the airport. Was assured I would be on the flight for the following day. Awoke next day and called airline to confirm, they stated my refund had been processed, I would not be on the flight, and there was nothing that they could do for me. I was forced to rent a car and take a completely different flight from another airport at a much higher price. Never again.

Mon, Apr 16
ORD
LGW
10h 45m
Sat, Apr 21
LGW
ORD
8h 35m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Feb 20
ORD
LGW
11h 40m
Wed, Mar 14
LGW
ORD
12h 35m
Trip: 22 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
ORD
KEF
Mediocre 2.6

Flight was 2 hours late, causing a missed flight. Baggage took 90 minutes to arrive. The airline provided no info on connections as hundreds of passengers stood around for an hour and then chaos reigned as all rushed to get rebooked in only two lines. Nobody got rebooked until the next day and had to stay overnight in hotels with a voucher that provided only minimal food after a 15 minute walk to a fast food restaurant. the following day we were rebooked to Copenhagen rather than Berlin, with no guarantee of a connecting flight. I was forced to buy another ticket on another carrier in order to make my own wedding.

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

MIA
KEF
Mediocre 2.0

Easy refund

Customer service, flight cancelled with no alternative offered

LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

DUB
KEF
Excellent 8.0

Comfortable seats, outlets to charge devices.

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

Wed, Mar 21
ORD
LGW
21h 15m
Wed, Apr 11
LGW
ORD
16h 10m
Trip: 22 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Feb 27
ORD
LGW
11h 40m
Wed, Mar 14
LGW
ORD
12h 35m
Trip: 15 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 1218 reviews
Overall
5.9
Boarding
6.3
Comfort
5.7
Crew
6.9
Entertainment
4.1
Food
4.7
LGW
KEF
Good 6.6

Food was reasonably priced. Price of flight was great.

Not a lot of room. Tight space.

KEF
ORD
Okay 4.3

Cheap price and sources of entertainment

We paid for upgraded seats and did not receive them. We told the crew. They did nothing except say to call or email WOW. So we did. After waiting a half hour they said we would be refunded. Aweek later, we receive an email asking what it is we requested on the call, as if they did not remember to refund us the money for the upgraded seats we never got and should have.

MIA
KEF
Mediocre 2.0

Easy refund

Customer service, flight cancelled with no alternative offered

ORD
KEF
Mediocre 2.6

Flight was 2 hours late, causing a missed flight. Baggage took 90 minutes to arrive. The airline provided no info on connections as hundreds of passengers stood around for an hour and then chaos reigned as all rushed to get rebooked in only two lines. Nobody got rebooked until the next day and had to stay overnight in hotels with a voucher that provided only minimal food after a 15 minute walk to a fast food restaurant. the following day we were rebooked to Copenhagen rather than Berlin, with no guarantee of a connecting flight. I was forced to buy another ticket on another carrier in order to make my own wedding.

DUB
KEF
Excellent 8.0

Comfortable seats, outlets to charge devices.

No complimentary food or drink. Most airlines in the US offer a complimentary drink and small snack like chips or pretzels. a little gesture like that goes a long way. everything should not have to come with a price. in flight entertainment would be nice to offer too. even for a small fee.

Show more results

Chicago to London Flight Information

Flights Arrive in London
Flights Depart from Chicago
Flight Price $267
Distance 3947 miles
Airlines WOW air
*
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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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.