€332 Cheap flights to Illinois
This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight to Illinois 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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Find flights to these popular cities in Illinois from your nearest airport.
Flights to Chicago
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Illinois flights insights and trends
Explore insights for your Illinois flight to craft the best travel plan
What is the cheapest flight I can find to Illinois?
For prices as low as €96/pp, you can find flights to Illinois depending on where you are departing from. On average, flights to Illinois cost €614/pp.
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What is the cheapest day to depart on your flight to Illinois?
According to our data, Monday is the cheapest day to fly to Illinois from Ireland. The lowest ticket price found for a Monday departure recently was €617. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Sunday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travellers. As a result, prices tend to be around €744.
Cheapest flights to cities in Illinois
Click on the cities below to find out when it's cheapest to fly to Illinois from Ireland
Cheap Illinois flight deals and tips
Summary info about Illinois flight prices, duration and airlines
Best One-Way Price | €288 |
|---|---|
Best Round-Trip Price | €332 |
Fastest flight time | 12h 00m |
Popular in | July |
Frequently asked questions about flying to Illinois
What is the best airport to fly into to visit Chicago?
The majority of momondo users who fly to Illinois tend to spend time in Chicago, which is visited 100% more often than other cities. When flying to Chicago, the most popular airport to fly into is Chicago O'Hare Intl Airport.
I plan on visiting Magnificent Mile. Which airport is the quickest drive?
For the quickest drive from an arrival airport to Magnificent Mile, fly into Chicago O'Hare Intl Airport or Chicago Midway Airport, which are closest to the area.
What are the most popular landmarks in Illinois?
The most often visited landmarks in Illinois are Magnificent Mile, Art Institute of Chicago, and Grant Park, among many others that can be found in the area.
What is the weather like in Illinois?
Temperatures in Illinois can vary between -5 °C and 23 °C based on the time of year. Typically, the coldest month in Illinois will be January, and the warmest month will be July. It is also worth noting that those looking to avoid rain and/or snow should consider travelling to Illinois in January, February, and December, as that is when precipitation is least likely.
Which airlines fly to Illinois?
Of the 7 airlines that fly to Illinois, Aer Lingus, United Airlines and British Airways happen to be the most favoured based on our user data. Aer Lingus is the most popular among the three airlines, with 65% of users choosing them for their travels to Illinois.
How much are flights to Illinois?
You can expect to spend an average of €1,040 for a flight to Illinois. However, our users found flights to Illinois for €444, which is the cheapest price we’ve seen in the past week. €2,321 per ticket tends to be the most expensive a flight to Illinois will get, whereas anything for €924 or less is considered a good deal.
What is the best day of the week to fly to Illinois?
If your travel plans are flexible and you’re looking to save money on flights to Illinois, then be sure to book your departure on a Monday. Flying out on a Monday, as well as a Wednesday, is your best option. Departing on a Sunday tends to be the most expensive day of the week to fly to Illinois.
When did momondo last update prices for flights to Illinois?
Prices for flights to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights to Illinois?
There are 9 operators available for flights to Illinois as of May 2025.
How old do you have to be to fly to Illinois?
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 stopovers. It is recommended that you verify with the airline you are booking with for travel to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Why use momondo?
Why should I use momondo to find a flight deal to Illinois?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights to Illinois. Millions of users trust and use momondo every year so you are in good company.
Can I find flights to Illinois with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Illinois with this policy.
How can momondo help me find flights to Illinois?
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 filter your options to help you make an informed choice when booking flights to Illinois.
I’m not ready to book a flight to Illinois right now. Can momondo alert me if prices change?
If you are not ready to book a flight to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert; this is where momondo will track prices on flights to Illinois and let you know when they change.