Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Chicago O'Hare Intl Airport to London from $193

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to London departing on 11/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Chicago O'Hare Intl Airport to London

Cheap round-trip flights

Scandinavian Airlines Logo
7:20 pm - 12:55 pmORD-LHR
35h 35m2 stops
Scandinavian Airlines Logo
6:40 am - 4:45 pmLHR-ORD
40h 05m2 stops
$377Scandinavian Airlines
Find Deal
Thu, Nov 6 - Sun, Nov 9
Scandinavian Airlines Logo
7:20 pm - 12:55 pmORD-LHR
35h 35m2 stops
Scandinavian Airlines Logo
6:40 am - 4:45 pmLHR-ORD
40h 05m2 stops
$379Scandinavian Airlines
Find Deal
Thu, Nov 6 - Sun, Nov 9
Scandinavian Airlines Logo
7:15 pm - 9:35 amORD-LHR
32h 20m2 stops
Scandinavian Airlines Logo
6:40 am - 4:10 pmLHR-ORD
39h 30m2 stops
$404Scandinavian Airlines
Find Deal
Thu, Oct 16 - Sun, Oct 19
Scandinavian Airlines Logo
7:20 pm - 12:55 pmORD-LHR
35h 35m2 stops
Scandinavian Airlines Logo
10:20 am - 4:45 pmLHR-ORD
12h 25m1 stop
$408Scandinavian Airlines
Find Deal
Thu, Nov 6 - Sun, Nov 9
Icelandair Logo
7:25 pm - 8:20 pmORD-LHR
18h 55m1 stop
Icelandair Logo
1:05 pm - 9:15 pmLHR-ORD
14h 10m1 stop
$583Icelandair
Find Deal
Wed, Oct 8 - Wed, Oct 15
Icelandair Logo
10:15 pm - 8:20 pmORD-LHR
16h 05m1 stop
Icelandair Logo
1:05 pm - 6:15 pmLHR-ORD
11h 10m1 stop
$585Icelandair
Find Deal
Tue, Aug 12 - Thu, Aug 28
Finnair Logo
4:55 pm - 6:50 amORD-LHR
7h 55mnonstop
Finnair Logo
10:20 am - 5:50 pmLHR-ORD
13h 30m1 stop
$598Finnair
Find Deal
Tue, Aug 12 - Thu, Aug 28
Finnair Logo
10:35 pm - 12:15 pmORD-LHR
7h 40mnonstop
Finnair Logo
7:30 am - 5:50 pmLHR-ORD
16h 20m1 stop
$613Finnair
Find Deal
Tue, Aug 19 - Wed, Aug 27
Aer Lingus Logo
9:15 pm - 1:25 pmORD-LHR
10h 10m1 stop
Aer Lingus Logo
8:50 am - 2:00 pmLHR-ORD
11h 10m1 stop
$614Aer Lingus
Find Deal
Tue, Sep 9 - Thu, Sep 18
British Airways Logo
9:15 pm - 10:55 amORD-LHR
7h 40mnonstop
British Airways Logo
2:25 pm - 5:00 pmLHR-ORD
8h 35mnonstop
$619British Airways
Find Deal
Tue, Aug 19 - Thu, Sep 4

TAP AIR PORTUGAL flights from Chicago O'Hare Intl Airport to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Chicago O'Hare Intl Airport to London Heathrow Airport flight tickets
TAP AIR PORTUGAL
Sep 11
ORD6:00 pmChicago O'Hare Intl
22h 55m
1 stop
LHR10:55 pmLondon Heathrow
Sep 15
LHR6:00 amLondon Heathrow
16h 40m
1 stop
ORD4:40 pmChicago O'Hare Intl
TAP AIR PORTUGAL
Sep 8
ORD6:10 pmChicago O'Hare Intl
17h 35m
1 stop
LHR5:45 pmLondon Heathrow
Sep 15
LHR6:00 amLondon Heathrow
16h 40m
1 stop
ORD4:40 pmChicago O'Hare Intl
TAP AIR PORTUGAL
Sep 8
ORD6:10 pmChicago O'Hare Intl
18h 40m
1 stop
LHR6:50 pmLondon Heathrow
Sep 15
LHR8:00 amLondon Heathrow
14h 40m
1 stop
ORD4:40 pmChicago O'Hare Intl

Icelandair flights from Chicago O'Hare Intl Airport to London Heathrow Airport

Our best Icelandair deals on Chicago O'Hare Intl Airport to London Heathrow Airport flight tickets
Icelandair
Oct 8
ORD7:25 pmChicago O'Hare Intl
18h 55m
1 stop
LHR8:20 pmLondon Heathrow
Oct 15
LHR1:05 pmLondon Heathrow
14h 10m
1 stop
ORD9:15 pmChicago O'Hare Intl
Icelandair
Aug 12
ORD10:15 pmChicago O'Hare Intl
16h 05m
1 stop
LHR8:20 pmLondon Heathrow
Aug 28
LHR1:05 pmLondon Heathrow
11h 10m
1 stop
ORD6:15 pmChicago O'Hare Intl
Icelandair
Jul 22
ORD7:25 pmChicago O'Hare Intl
10h 30m
1 stop
LHR11:55 amLondon Heathrow
Jul 29
LHR9:25 pmLondon Heathrow
26h 50m
1 stop
ORD6:15 pmChicago O'Hare Intl

See travel insights to London from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Chicago O'Hare Intl Airport, with most prices found around $672. If you’re not able to fly to London Heathrow Airport in February, then April is your next best option. Flight prices from Chicago O'Hare Intl Airport to London Heathrow Airport during April average around $678.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $760. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $883.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Chicago O'Hare Intl Airport to London Heathrow Airport in the morning for as low as $701. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $822.

What is the cheapest Chicago O'Hare Intl to London Heathrow flight route?

Fly from Chicago O'Hare Intl to London Heathrow for the best Chicago O'Hare Intl - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Chicago O'Hare Intl Airport when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $803 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Chicago O'Hare Intl Airport for as low as $712 on momondo.

What cabin class options are available on Chicago O'Hare Intl to London Heathrow flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago O'Hare Intl Airport to London Heathrow Airport flights?

You could potentially save up to 24% on your flight if you consider stops on a Chicago O'Hare Intl Airport to London Heathrow Airport flight.

How have Chicago O'Hare Intl Airport to London Heathrow Airport flight prices changed over time?

As of June 2025, prices for Chicago O'Hare Intl Airport to London Heathrow Airport flights are approximately 22% more expensive when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to London Heathrow Airport (ORD to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to London Heathrow Airport

Best Price Found

$193

Fastest flight time

7h 40m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Chicago O'Hare Intl Airport in the past 72 hours is $193. The best round-trip flight deal from Chicago O'Hare Intl Airport to London Heathrow Airport found on momondo in the last 72 hours is $377.
The fastest flight from Chicago O'Hare Intl Airport to London Heathrow Airport takes 7h 40m
Direct flights go from Chicago O'Hare Intl Airport to London Heathrow Airport every day.

  • How far is Chicago O'Hare Intl to London Heathrow by plane?

    London Heathrow is 3939.2 mi away from Chicago O'Hare Intl. By plane, this route typically takes 7h 40m.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to London Heathrow Airport?

    Prices for flights from Chicago O'Hare Intl Airport to London Heathrow Airport refresh daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to London Heathrow Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago O'Hare Intl Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Chicago O'Hare Intl Airport to London Heathrow Airport?

  • What is the most popular airline from Chicago O'Hare Intl Airport to London Heathrow Airport?


Best airlines flying from Chicago O'Hare Intl Airport to London Heathrow Airport

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $257Free CancellationRating
7.5
1,623 reviews
Search SWISS flights
DeltaPriceFrom $345Free CancellationRating
8.0
7,950 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $381Free CancellationRating
7.3
1,387 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $440Free CancellationRating
6.7
7,136 reviews
Search Lufthansa flights
IcelandairPriceFrom $465Free CancellationRating
7.0
499 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $507Free CancellationRating
7.1
1,885 reviews
Search TAP AIR PORTUGAL flights
JetBluePriceFrom $516Free CancellationRating
7.3
2,925 reviews
Search JetBlue flights
Air CanadaPriceFrom $554Free CancellationRating
7.1
9,531 reviews
Search Air Canada flights
FinnairPriceFrom $567Free CancellationRating
7.6
1,290 reviews
Search Finnair flights
Aer LingusPriceFrom $569Free CancellationRating
7.1
1,117 reviews
Search Aer Lingus flights
  • Alaska Airlines Flights From Chicago O'Hare Intl Airport to London Heathrow Airport

    Alaska Airlines operates around 40 flights from Chicago O'Hare Intl Airport to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been $973, but momondo users have found Alaska Airlines deals from Chicago O'Hare Intl Airport to London Heathrow Airport from as low as $809 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.

  • Finnair Flights From Chicago O'Hare Intl Airport to London Heathrow Airport

    Another popular option for Chicago O'Hare Intl Airport to London Heathrow Airport flights is Finnair (7.6/10, 1,290 ratings). Finnair flies from Chicago O'Hare Intl Airport to London Heathrow Airport around 33 times per week, with deals starting from $567 round-trip and rising to an average price of around $745.


Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Croydon
Luton
Slough
Guildford
Dartford
Dover
Stansted
Hayes
Salisbury
Milton Keynes
Ilford
Swindon
Colchester
Canterbury
Stratford-upon-Avon
Chelmsford
Watford
Wembley

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to London?

It is quick and easy to find Chicago to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Chicago to London with flexible booking policies on momondo?

All flight searches from Chicago to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Chicago to London?

momondo helps you find the best flight between Chicago and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Chicago to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 6/17
Tue 6/24

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo