Cheap flights from the United Kingdom to Chicago from £188
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Chicago departing on 15/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from United Kingdom to Chicago
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 Chicago?
The cheapest month to fly to Chicago from United Kingdom is in February. Flight prices, which tend to average around £427, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Chicago from United Kingdom during March instead. Flights to Chicago in March, while not as cheap as those in February, still average around £450.
What is the cheapest day to depart on your flight to Chicago?
The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as £605. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Chicago is Sunday, with ticket prices averaging around £666.
What is the cheapest time of day to depart on your flight to Chicago?
Flying to Chicago from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £495 when looking at flights departing in the evening. Flights in the afternoon are often more expensive, with an average ticket price of £665.
What is the cheapest United Kingdom to Chicago flight route?
Fly from London Heathrow to Chicago O'Hare Intl for the best United Kingdom - Chicago flight prices
How far in advance should I book a flight to Chicago?
You are more likely to see cheaper flights to Chicago from United Kingdom when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around £546 when searching 13 weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from United Kingdom for as low as £523 on momondo.
What cabin class options are available on United Kingdom to Chicago flights?
There are 4 cabin classes available to choose from on United Kingdom to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How many flights depart from United Kingdom to Chicago on average per day?
The number of flights available between United Kingdom and Chicago is 55 per day as of June 2025. The most frequent departure time is 11:00, with 50% of daily flights leaving in the afternoon.
How many flights depart from United Kingdom to Chicago on average per week?
As of June 2025, there are 386 flights per week flying from United Kingdom to Chicago. The most common day of the week flights depart is Sat, with 15% of flights taking off on this day.
Cheap United Kingdom to Chicago flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Chicago
When did momondo last update prices for flights from United Kingdom to Chicago?
Prices for flights from United Kingdom to Chicago are updated daily.
How many operators does momondo search for flights from United Kingdom to Chicago?
As of June 2025, there are 16 operators available to choose from for flights from United Kingdom to Chicago.
How old do you have to be to fly from United Kingdom to Chicago?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United Kingdom to Chicago.
What documentation or ID do you need to fly to Chicago?
The travel and health documents you'll need for your trip to Chicago 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 Chicago. 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 United Kingdom to Chicago?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from United Kingdom to Chicago is Boeing 767-300 (40.87% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (19.17%), Boeing 777 (15.12%), and Boeing 777-300ER (7.32%).
Best airlines flying from United Kingdom to Chicago
Compare and see reviews for airlines that fly from United Kingdom to Chicago with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £310 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom £324 | Free Cancellation | Rating 7.1 1,118 reviews | |||
| PriceFrom £333 | Free Cancellation | Rating 7.5 1,466 reviews | |||
| PriceFrom £350 | Free Cancellation | Rating 7.3 1,393 reviews | |||
| PriceFrom £364 | Free Cancellation | Rating 7.1 1,892 reviews | |||
| PriceFrom £374 | Free Cancellation | Rating 6.6 7,028 reviews | |||
| PriceFrom £381 | Free Cancellation | Rating 7.4 653 reviews | |||
| PriceFrom £390 | Free Cancellation | Rating 7.4 355 reviews | |||
| PriceFrom £396 | Free Cancellation | Rating 6.8 7,152 reviews | |||
| PriceFrom £397 | Free Cancellation | Rating 7.6 804 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from United Kingdom to Chicago?
It is quick and easy to find United Kingdom to Chicago 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 Chicago that suits you.
Can I find flights from United Kingdom to Chicago with flexible booking policies on momondo?
momondo does allow users to show only those flights to Chicago from United Kingdom which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from United Kingdom to Chicago?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chicago from United Kingdom.
I’m not ready to book a flight from United Kingdom to Chicago right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from United Kingdom and alert you when they change.