$336 Find Cheap Flights from Dublin to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dublin to Illinois departing on 5/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Dublin to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Dublin to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Dublin to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dublin to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dublin to Illinois

金, 5月 8 - 日, 5月 17
Multiple Airlines Logo
7:50 pm - 11:15 pm
DUB
-
ORD
33h 25m
3 stops
Multiple Airlines Logo
7:33 pm - 10:10 am
ORD
-
DUB
32h 37m
3 stops
$585Multiple Airlines
金, 5月 8 - 日, 5月 17
Multiple Airlines Logo
7:50 pm - 11:15 pm
DUB
-
ORD
33h 25m
3 stops
Multiple Airlines Logo
7:33 pm - 10:10 am
ORD
-
DUB
32h 37m
3 stops
$586Multiple Airlines
火, 5月 19 - 月, 8月 10
British Airways Logo
10:30 am - 6:15 pm
DUB
-
ORD
13h 45m
1 stop
British Airways Logo
5:00 pm - 12:00 pm
ORD
-
DUB
13h 00m
1 stop
$587British Airways
火, 5月 19 - 日, 8月 9
British Airways Logo
10:30 am - 6:15 pm
DUB
-
ORD
13h 45m
1 stop
British Airways Logo
9:15 pm - 4:20 pm
ORD
-
DUB
13h 05m
1 stop
$588British Airways
金, 6月 5 - 火, 6月 9
JetBlue Logo
11:30 am - 9:54 am
DUB
-
ORD
28h 24m
1 stop
JetBlue Logo
6:15 am - 9:00 am
ORD
-
DUB
20h 45m
1 stop
$590JetBlue
金, 9月 4 - 日, 9月 20
Icelandair Logo
12:15 pm - 9:25 pm
DUB
-
ORD
15h 10m
1 stop
Icelandair Logo
7:25 pm - 1:15 pm
ORD
-
DUB
11h 50m
1 stop
$593Icelandair
金, 9月 18 - 月, 9月 21
Icelandair Logo
12:15 pm - 9:25 pm
DUB
-
ORD
15h 10m
1 stop
Icelandair Logo
7:25 pm - 1:15 pm
ORD
-
DUB
11h 50m
1 stop
$595Icelandair
木, 5月 21 - 水, 5月 27
British Airways Logo
9:30 am - 11:30 am
DUB
-
ORD
8h 00mnonstop
British Airways Logo
9:15 pm - 2:35 pm
ORD
-
DUB
11h 20m
1 stop
$597British Airways
金, 5月 8 - 木, 5月 14
Finnair Logo
9:30 am - 11:30 am
DUB
-
ORD
8h 00mnonstop
Finnair Logo
10:25 pm - 11:50 am
ORD
-
DUB
7h 25mnonstop
$601Finnair
木, 5月 28 - 土, 6月 6
Finnair Logo
9:30 am - 11:54 pm
DUB
-
STL
20h 24m
1 stop
Finnair Logo
5:14 pm - 11:50 am
STL
-
DUB
12h 36m
1 stop
$955Finnair
Booking Insights

KAYAK's insights & trends for Dublin to Illinois flights

Get data-powered insights and trends into flights from Dublin to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Dublin to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Dublin to Illinois departing in May.

What is the cheapest Dublin to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Dublin found in the last 72 hours was to Chicago, at $629 round-trip. The most popular route is from Dublin (DUB) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $629.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Dublin to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $783 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $860.

Can I save money by flying with a layover from Dublin to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $723 on average.

What is the cheapest month to fly from Dublin to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Dublin to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Dublin to Illinois is September, when tickets cost $467 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $777 and $752 respectively.

What’s the cheapest day of the week to fly from Dublin to Illinois?

The average price of all round-trip flights from Dublin to Illinois clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Illinois on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Dublin to Illinois. For your return ticket, we recommend flying on a Monday and avoiding Saturdays for the best deals.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Dublin to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Dublin to Illinois, you should book around 3 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonJanuary
Best time to beat the crowds but there is an average 2% increase in price.

Flights from Dublin to Illinois: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Dublin to Illinois 
JohannaFlew with Aer Lingus
DUB
-
ORD
Feb 2026
Are Ling’s was great, and boards from the back of the plane, which made boarding way less chaotic and much quicker.
Verified travelerFlew with Iberia
DUB
-
ORD
Sep 2024
Taking the coach bus to Dublin from Castlebar to departures was affordable and easy.
ConnerFlew with Aer Lingus
DUB
-
ORD
Sep 2024
You need almost 2 hours to be sure you will clear US pre clearance
Verified travelerFlew with Lufthansa
DUB
-
ORD
Aug 2024
Give yourself enough time to go through US Customs in Dublin.

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Dublin to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Dublin to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Dublin to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Dublin to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Dublin to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Dublin to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Dublin to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Dublin to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Dublin to the following destinations at these prices or less: Chicago $632 one-way - $679 round-trip

Reviews of the top airlines flying from Dublin to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Dublin to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dublin to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9637 reviews
7.7Boarding
8.1Crew
7.3Comfort
6.6Food
7.1Entertainment
Airline reviews

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

6.0 GoodAnonymous, Apr 2026
YOW - ORD
Read more United Airlines reviews

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

It was better than excellent. The staff in Mason City were great. The young woman that pushed my wheelchair did more than could be expected of her. She came from India 17 years ago. I don't remember her name.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

The crew was generally professional. Though one of the crew members seemed to be easily annoyed, the others were fine and helpful. The green olives and almonds snack was really good. A great idea, and nice balance of tastes.

On a four hour delayed flight now on seats back end of the plane instead front-

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

Checked in ok for 3 flights at the airport check-in desk, but apparently I was not checked in to my connecting flights even though I was assured that I was and had seats on all 3 flights. Aer Lingus departure was also delayed for 1.5 hours which gave no time to collect bags to go through customs.

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

One of the best flight experiences I've have had in along time. Would fly with them again.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

Everything you need to know for your flight from Dublin to Illinois

Information on your arrival and departure airports