Question 1

Can stopping save me money on Ireland to Illinois flights?

Accepted Answer

You could potentially save up to 25% on your flight if you consider stops on a Ireland to Illinois flight.

Question 2

What is the cheapest day to depart on your flight to Illinois?

Accepted Answer

According to our data, Wednesday is the cheapest day to fly to Illinois from Ireland. The lowest ticket price found for a Wednesday departure recently was €607. 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 €702.

Question 3

What is the cheapest time of day to depart on your flight to Illinois?

Accepted Answer

According to our data, the cheapest time of day to fly to Illinois is in the evening. momondo users have found flights departing from Ireland to Illinois in the evening for as low as €518. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at midday because they tend to be around €650. Of course, these prices can vary depending on the time of year and what airport you fly to.

Question 4

How far in advance should I book a flight to Illinois?

Accepted Answer

You are more likely to see cheaper flights to Illinois from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around €512 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Ireland for as low as €447 on momondo.

Question 5

What is the cheapest month to fly to Illinois?

Accepted Answer

The cheapest month to fly to Illinois from Ireland is in November. Flight prices, which tend to average around €435, are often lower during this time because this is during the off-season. If you’re not able to fly to Illinois in November, then September is your next best option. Flight prices from Ireland to Illinois during September average around €444.

Question 6

What is the cheapest Ireland to Illinois flight route?

Accepted Answer

Fly from Dublin to Chicago O'Hare Intl for the best Ireland - Illinois flight prices

Question 7

How long is the flight from Ireland to Illinois?

Accepted Answer

If you’re flying from a popular airport in Ireland, such as Dublin or Shannon, and flying into Illinois, then you can expect flight times to average 8h and 8h 15m, respectively.

Question 8

How many flights depart from Ireland to Illinois on average per day?

Accepted Answer

As of July 2025, 18 flights take off from Ireland and land in Illinois each day. The most common flight departure time for this route is 11:00, with 51% of daily flights taking off at midday.

Question 9

How many flights depart from Ireland to Illinois on average per week?

Accepted Answer

As of July 2025, there are 131 flights per week flying from Ireland to Illinois. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

Question 10

What cabin class options are available on Ireland to Illinois flights?

Accepted Answer

There are 3 cabin classes available to choose from on Ireland to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 11

What is the cheapest airline that flies from Ireland to Illinois?

Accepted Answer

Icelandair, TAP AIR PORTUGAL, and Finnair are the most popular carriers operating from Ireland to Illinois

Question 12

Which airlines fly to Illinois?

Accepted Answer

Aer Lingus, United Airlines and British Airways are the top three most popular airlines that fly to Illinois from Ireland according to our data. Aer Lingus is the first choice among our users, with 62% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

Question 13

When did momondo last update prices for flights from Ireland to Illinois?

Accepted Answer

Prices for flights from Ireland to Illinois are updated daily.

Question 14

How many operators does momondo search for flights from Ireland to Illinois?

Accepted Answer

As of July 2025, there are 7 operators available to choose from for flights from Ireland to Illinois.

Question 15

How old do you have to be to fly from Ireland to Illinois?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Illinois.

Question 16

What documentation or ID do you need to fly to Illinois?

Accepted Answer

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.

Best price found	€216
Fastest flight time	8h 00m
Direct flights	Every day
Airports in Illinois	3 airports

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom €332	Free Cancellation	Rating 6.6 7,123 reviews	Search British Airways flights
Icelandair	PriceFrom €336	Free Cancellation	Rating 7.0 515 reviews	Search Icelandair flights
Finnair	PriceFrom €343	Free Cancellation	Rating 7.6 1,316 reviews	Search Finnair flights
Aer Lingus	PriceFrom €351	Free Cancellation	Rating 7.1 1,159 reviews	Search Aer Lingus flights
United Airlines	PriceFrom €375	Free Cancellation	Rating 7.4 8,850 reviews	Search United Airlines flights
American Airlines	PriceFrom €436	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Cheap flights from Ireland to Illinois from €216

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Illinois departing on 6/10. 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 Ireland 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?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

What is the cheapest Ireland to Illinois flight route?

Fly from Dublin to Chicago O'Hare Intl for the best Ireland - Illinois flight prices

How far in advance should I book a flight to Illinois?

What cabin class options are available on Ireland to Illinois flights?

There are 3 cabin classes available to choose from on Ireland to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ireland to Illinois flights?

You could potentially save up to 25% on your flight if you consider stops on a Ireland to Illinois flight.

What is the cheapest airline that flies from Ireland to Illinois?

Icelandair, TAP AIR PORTUGAL, and Finnair are the most popular carriers operating from Ireland to Illinois

Which airlines fly to Illinois?

How many flights depart from Ireland to Illinois on average per day?

As of July 2025, 18 flights take off from Ireland and land in Illinois each day. The most common flight departure time for this route is 11:00, with 51% of daily flights taking off at midday.

How many flights depart from Ireland to Illinois on average per week?

As of July 2025, there are 131 flights per week flying from Ireland to Illinois. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

How long is the flight from Ireland to Illinois?

If you’re flying from a popular airport in Ireland, such as Dublin or Shannon, and flying into Illinois, then you can expect flight times to average 8h and 8h 15m, respectively.

Cheap Ireland to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Illinois

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Airports in Illinois

When did momondo last update prices for flights from Ireland to Illinois?

How many operators does momondo search for flights from Ireland to Illinois?

How old do you have to be to fly from Ireland to Illinois?

What documentation or ID do you need to fly to Illinois?

What is the most popular plane model from Ireland to Illinois?

Best airlines flying from Ireland to Illinois

Compare and see reviews for airlines that fly from Ireland to Illinois with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to Illinois?

Can I find flights from Ireland to Illinois with flexible booking policies on momondo?

How can momondo help me find flights from Ireland to Illinois?

I’m not ready to book a flight from Ireland to Illinois right now. Can momondo alert me if prices change?

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