Cheap flights from Illinois to the United Kingdom from $202
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to the United Kingdom departing on 3/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Round-trip
1 adult
Economy
0 bags
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Cheap round-trip flights
These are some of the best round-trip flight deals from Illinois 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 Illinois to the United Kingdom.
Cheap last minute flights
Planning a quick getaway from Illinois 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 layovers.
Cheap bus & train deals from Illinois to the United Kingdom
Find recent round-trip train or bus tickets from Illinois to the United Kingdom.
All round-trip flight deals to the United Kingdom
The cheapest plane tickets to the United Kingdom found on KAYAK recently.
Iberia flights from Illinois to United Kingdom
Our best Iberia deals on Illinois to United Kingdom flight tickets
Iberia![Iberia]()
Mar 4![Iberia]()
Mar 11
ORD9:56 pmChicago O'Hare Intl
7h 44m
LHR11:40 amLondon Heathrow
LHR11:00 amLondon Heathrow
8h 55m
ORD2:55 pmChicago O'Hare Intl
Iberia![Iberia]()
Feb 26![Iberia]()
Mar 5
ORD9:56 pmChicago O'Hare Intl
7h 44m
LHR11:40 amLondon Heathrow
LHR11:55 amLondon Heathrow
8h 50m
ORD2:45 pmChicago O'Hare Intl
United Airlines flights from Illinois to United Kingdom
Our best United Airlines deals on Illinois to United Kingdom flight tickets
United Airlines![United Airlines]()
Jan 28![United Airlines]()
Feb 4
ORD5:50 pmChicago O'Hare Intl
8h 05m
LHR7:55 amLondon Heathrow
LHR8:55 amLondon Heathrow
13h 20m
1 stop
ORD4:15 pmChicago O'Hare Intl
United Airlines![United Airlines]()
Jan 19![United Airlines]()
Jan 27
ORD9:10 pmChicago O'Hare Intl
8h 05m
LHR11:15 amLondon Heathrow
LHR12:05 pmLondon Heathrow
34h 10m
1 stop
ORD4:15 pmChicago O'Hare Intl
See travel insights to the United Kingdom from
How to get the cheapest flight ticket from Illinois 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?
In general, February is the cheapest month to fly from Illinois to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $631. If you aren’t able to travel to United Kingdom during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $660.
What is the cheapest day to depart on your flight to United Kingdom?
The cheapest day to depart from Illinois to United Kingdom is on a Tuesday when prices can be found for as low as $720. The most expensive day to fly to United Kingdom is Friday, with ticket prices averaging around $827.
What is the cheapest time of day to depart on your flight to United Kingdom?
According to our data, the cheapest time of day to fly to United Kingdom is in the morning. momondo users have found flights departing from Illinois to United Kingdom in the morning for as low as $747. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the afternoon, with an average ticket price of $788. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Illinois to United Kingdom flight route?
Fly from Chicago O'Hare Intl to London Heathrow for the best Illinois - United Kingdom flight prices
How far in advance should I book a flight to United Kingdom?
We recommend purchasing flights from Illinois to United Kingdom 22 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to United Kingdom for $802. However, in the past 72 hours, people saw flights from Illinois for as low as $669.
What cabin class options are available on Illinois to United Kingdom flights?
There are 4 cabin classes available to choose from on Illinois 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 Illinois to United Kingdom?
WestJet, Icelandair, and JetBlue are the most popular carriers operating from Illinois to United Kingdom
What airlines fly to United Kingdom?
British Airways, American Airlines and Iberia are the top three most popular airlines that fly to United Kingdom from Illinois according to our data. British Airways is the first choice among our users, with 42% of people opting to fly with this airline when traveling to United Kingdom. Keep in mind that there are 19 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 Illinois to United Kingdom on average per day?
The number of flights available between Illinois and United Kingdom is 36 per day as of January 2025. The most frequent departure time is 5:00PM, with 67% of daily flights leaving in the evening.
How many flights depart from Illinois to United Kingdom on average per week?
As of January 2025, there are 256 flights per week flying from Illinois to United Kingdom. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.
Cheap Illinois to United Kingdom flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to United Kingdom
Best Price Found | $202 |
|---|---|
Fastest flight time | 7h 30m |
Direct flights | Every day |
Airports in United Kingdom | 8 airports |
When did momondo last update prices for flights from Illinois to United Kingdom?
Prices for flights from Illinois to United Kingdom are updated daily.
How many operators does momondo search for flights from Illinois to United Kingdom?
As of January 2025, there are 20 operators available to choose from for flights from Illinois to United Kingdom.
How old do you have to be to fly from Illinois to United Kingdom?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Illinois to United Kingdom?
momondo data reveals that the most frequently booked plane model on the route from Illinois to United Kingdom is Boeing 787-9 Dreamliner, representing 41.88% of all bookings. The subsequent popular models are Boeing 777 at 24.37%, Boeing 767-300 at 15.00%, and Boeing 787-10 Dreamliner at 8.84%.
Best airlines flying from Illinois to United Kingdom
Compare and see reviews for airlines that fly from Illinois to United Kingdom with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $372 | Free Cancellation | Rating 7.3 1,301 reviews | |||
| PriceFrom $451 | Free Cancellation | Rating 8.0 8,501 reviews | |||
| PriceFrom $471 | Free Cancellation | Rating 7.1 498 reviews | |||
| PriceFrom $495 | Free Cancellation | Rating 7.1 1,860 reviews | |||
| PriceFrom $516 | Free Cancellation | Rating 7.4 3,191 reviews | |||
| PriceFrom $516 | Free Cancellation | Rating 6.7 7,078 reviews | |||
| PriceFrom $529 | Free Cancellation | Rating 7.3 3,900 reviews | |||
| PriceFrom $543 | Free Cancellation | Rating 7.1 1,073 reviews | |||
| PriceFrom $554 | Free Cancellation | Rating 7.0 8,516 reviews | |||
| PriceFrom $568 | Free Cancellation | Rating 7.6 1,282 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Illinois to United Kingdom?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to United Kingdom for you.
Can I find flights from Illinois to United Kingdom with flexible booking policies on momondo?
Yes. All flights to United Kingdom from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Illinois to United Kingdom?
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 United Kingdom from Illinois.
I’m not ready to book a flight from Illinois to United Kingdom right now. Can momondo alert me if prices change?
Price alerts on flights to United Kingdom from Illinois 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.
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