Cheap flights from the United Kingdom to Illinois from £210
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 Illinois departing on 13/5. 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 Illinois
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 Illinois?
The month of February is, on average, the cheapest month to fly to Illinois from United Kingdom, with most prices found around £434. If you aren’t able to travel to Illinois during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of £462.
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart on your flight to Illinois is on a Wednesday when prices can be found for as low as £615. This is often the case because there is less demand to fly during this day of the week. Flights from United Kingdom to Illinois on a Sunday will generally be more expensive and average around £669. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Illinois?
Our data shows that the cheapest United Kingdom to Illinois flights are usually those with departure times in the evening. Our users have found flights to Illinois in the evening for as low as £559. In the afternoon is when there is more demand to fly to Illinois, so prices are often more expensive at around £654 per ticket.
What is the cheapest United Kingdom to Illinois flight route?
Fly from London Heathrow to Chicago O'Hare Intl for the best United Kingdom - Illinois flight prices
How far in advance should I book a flight to Illinois?
You are more likely to see cheaper flights to Illinois from United Kingdom when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around £554 when searching 13 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from United Kingdom for as low as £531 on momondo.
What cabin class options are available on United Kingdom to Illinois flights?
There are 4 cabin classes available to choose from on United Kingdom to Illinois 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 Illinois on average per day?
The number of flights available between United Kingdom and Illinois is 50 per day as of May 2025. The most frequent departure time is 14:00, with 54% of daily flights leaving in the afternoon.
How many flights depart from United Kingdom to Illinois on average per week?
As of May 2025, 354 flights take off from United Kingdom and land in Illinois each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.
Cheap United Kingdom to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Illinois
When did momondo last update prices for flights from United Kingdom to Illinois?
Prices for flights from United Kingdom to Illinois are updated daily.
How many operators does momondo search for flights from United Kingdom to Illinois?
There are 17 operators available for flights from United Kingdom to Illinois as of May 2025.
How old do you have to be to fly from United Kingdom to Illinois?
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 United Kingdom to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from United Kingdom to Illinois?
Based on momondo bookings for flights between United Kingdom and Illinois, the leading plane model is Boeing 767-300, making up 32.96% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 21.19%, Boeing 777 with 17.25%, and Boeing 777-300ER with 7.07%.
Best airlines flying from United Kingdom to Illinois
Compare and see reviews for airlines that fly from United Kingdom to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £314 | Free Cancellation | Rating 7.0 487 reviews | |||
| PriceFrom £329 | Free Cancellation | Rating 7.0 1,076 reviews | |||
| PriceFrom £339 | Free Cancellation | Rating 7.4 1,446 reviews | |||
| PriceFrom £356 | Free Cancellation | Rating 7.3 1,349 reviews | |||
| PriceFrom £369 | Free Cancellation | Rating 7.1 1,851 reviews | |||
| PriceFrom £380 | Free Cancellation | Rating 6.6 6,845 reviews | |||
| PriceFrom £409 | Free Cancellation | Rating 7.5 780 reviews | |||
| PriceFrom £410 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom £415 | Free Cancellation | Rating 7.4 642 reviews | |||
| PriceFrom £416 | Free Cancellation | Rating 6.7 7,045 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from United Kingdom to Illinois?
Finding the right flight to Illinois from United Kingdom is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.
Can I find flights from United Kingdom to Illinois with flexible booking policies on momondo?
Flights from United Kingdom to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from United Kingdom to Illinois?
Once you have performed a search for United Kingdom to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from United Kingdom to Illinois right now. Can momondo alert me if prices change?
If you are not ready to book a flight from United Kingdom to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.