Cheap flights from Chicago O'Hare Intl Airport to the United Kingdom from £146
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 the United Kingdom departing on 9/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Return
1 adult
Economy
0 bags
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise 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 the United Kingdom
Round-trip
One-way
Last minute
Direct
Cheap return flights
These are some of the best return flight deals from Chicago O'Hare Intl Airport to the United Kingdom that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from Chicago O'Hare Intl Airport to the United Kingdom.
Cheap last-minute flights
Planning a quick getaway from Chicago O'Hare Intl Airport to the United Kingdom? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to the United Kingdom, so you can enjoy a seamless trip without stopovers.
TAP AIR PORTUGAL flights from Chicago O'Hare Intl Airport to United Kingdom
Our best TAP AIR PORTUGAL deals on Chicago O'Hare Intl Airport to United Kingdom flight tickets
TAP AIR PORTUGAL![TAP AIR PORTUGAL]()
15 Sept![TAP AIR PORTUGAL]()
20 Sept
ORD18:10Chicago O'Hare Intl
17h 35m
1 stop
LHR17:45London Heathrow
LHR06:00London Heathrow
16h 30m
1 stop
ORD16:30Chicago O'Hare Intl
TAP AIR PORTUGAL![TAP AIR PORTUGAL]()
22 Sept![TAP AIR PORTUGAL]()
21 Oct
ORD18:10Chicago O'Hare Intl
15h 25m
1 stop
LGW15:35London Gatwick
LGW10:35London Gatwick
35h 35m
1 stop
ORD16:10Chicago O'Hare Intl
Finnair flights from Chicago O'Hare Intl Airport to United Kingdom
Our best Finnair deals on Chicago O'Hare Intl Airport to United Kingdom flight tickets
Finnair![Finnair]()
19 Aug![Finnair]()
28 Aug
ORD21:15Chicago O'Hare Intl
7h 40m
LHR10:55London Heathrow
LHR10:20London Heathrow
13h 30m
1 stop
ORD17:50Chicago O'Hare Intl
Finnair![Finnair]()
5 May![Finnair]()
21 May
ORD20:30Chicago O'Hare Intl
8h 00m
LHR10:30London Heathrow
LHR10:20London Heathrow
13h 30m
1 stop
ORD17:50Chicago O'Hare Intl
See travel insights to the United Kingdom from
How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to United Kingdom
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
Prices
Airlines
Other information
What is the cheapest month to fly to United Kingdom?
The cheapest month to fly to United Kingdom from Chicago O'Hare Intl Airport is in April. Flight prices, which tend to average around £488, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of April, then departing from Chicago O'Hare Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around £491.
What is the cheapest day to depart on your flight to United Kingdom?
The cheapest day to depart from Chicago O'Hare Intl Airport to United Kingdom is on a Wednesday. Travellers who choose to depart for United Kingdom on a Wednesday will often find tickets for as low as £535. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Chicago O'Hare Intl Airport to United Kingdom for around £667.
What is the cheapest time of day to depart on your flight to United Kingdom?
The cheapest time of day to fly to United Kingdom is in the afternoon when flights can be purchased for as low as £597. Try not to purchase tickets at midday because they tend to be around £699. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Chicago O'Hare Intl to United Kingdom flight route?
Fly from Chicago O'Hare Intl to London Heathrow for the best Chicago O'Hare Intl - United Kingdom flight prices
How far in advance should I book a flight to United Kingdom?
You are more likely to see cheaper flights to United Kingdom from Chicago O'Hare Intl Airport when booking 3 weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £588 when searching 3 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Chicago O'Hare Intl Airport for as low as £533 on momondo.
What cabin class options are available on Chicago O'Hare Intl to United Kingdom flights?
There are 4 cabin classes available to choose from on Chicago O'Hare Intl to United Kingdom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Chicago O'Hare Intl to United Kingdom?
Icelandair and TAP AIR PORTUGAL are the most popular carriers operating from Chicago O'Hare Intl to United Kingdom
Which airlines fly to United Kingdom?
British Airways, Iberia and Finnair are the top three most popular airlines that fly to United Kingdom from Chicago O'Hare Intl Airport according to our data. British Airways is the first choice among our users, with 57% of people opting to fly with this airline when travelling to United Kingdom. Keep in mind that there are 8 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.
How many flights depart from Chicago O'Hare Intl Airport to United Kingdom on average per day?
As of May 2025, 50 flights take off from Chicago O'Hare Intl Airport and land in United Kingdom each day. The most common flight departure time for this route is 21:00, with 65% of daily flights taking off in the evening.
How many flights depart from Chicago O'Hare Intl Airport to United Kingdom on average per week?
As of May 2025, 354 flights take off from Chicago O'Hare Intl Airport and land in United Kingdom each week. The most common flight departure day for this route is Thu, with 17% of weekly flights taking off on this day.
Cheap Chicago O'Hare Intl Airport to United Kingdom flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to United Kingdom
Best price found | £146 |
|---|---|
Fastest flight time | 7h 35m |
Direct flights | Every day |
Airports in United Kingdom | 6 airports |
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to United Kingdom?
Prices for flights from Chicago O'Hare Intl Airport to United Kingdom are updated daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to United Kingdom?
The number of operators available for flights from Chicago O'Hare Intl Airport to United Kingdom is 8 as of May 2025.
How old do you have to be to fly from Chicago O'Hare Intl Airport to United Kingdom?
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 United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The travel and health documents you'll need for your trip to United Kingdom 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 United Kingdom. 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 United Kingdom?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Chicago O'Hare Intl Airport to United Kingdom is Boeing 787-9 Dreamliner (41.43% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (19.22%), Boeing 777 (17.21%), and Boeing 767-300 (8.27%).
Best airlines flying from Chicago O'Hare Intl Airport to United Kingdom
Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to United Kingdom with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £259 | Free Cancellation | Rating 7.0 487 reviews | |||
| PriceFrom £329 | Free Cancellation | Rating 6.6 6,845 reviews | |||
| PriceFrom £357 | Free Cancellation | Rating 7.6 1,275 reviews | |||
| PriceFrom £384 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom £439 | Free Cancellation | Rating 7.0 1,076 reviews | |||
| PriceFrom £448 | Free Cancellation | Rating 7.0 2,701 reviews | |||
| PriceFrom £487 | Free Cancellation | Rating 6.7 7,045 reviews | |||
| PriceFrom £498 | Free Cancellation | Rating 7.4 8,696 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Chicago to United Kingdom?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to United Kingdom . Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Chicago to United Kingdom with flexible booking policies on momondo?
Yes. All flights to United Kingdom from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Chicago to United Kingdom?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to United Kingdom.
I’m not ready to book a flight from Chicago to United Kingdom right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Chicago to United Kingdom flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.
Get notified when prices go down
Daily price changes in your inbox - only with Price Alerts.
Find better results for your trip to the United Kingdom
Popular Cities in the United Kingdom
Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom £31
Flights to Manchesterfrom £29
Flights to Birminghamfrom £36
Flights to Edinburghfrom £31
Flights to Belfastfrom £27
Flights to Glasgowfrom £37
Flights to Bristolfrom £37
Flights to Newcastle upon Tynefrom £31
Flights to Aberdeenfrom £43
Flights to Liverpoolfrom £34
Flights to Leedsfrom £38
Flights to Invernessfrom £43