$341 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 3/6. 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

Fri, May 15 - Mon, May 25
Multiple Airlines Logo
9:30 am - 11:30 am
DUB
-
ORD
8h 00mnonstop
Multiple Airlines Logo
10:20 pm - 6:40 pm
ORD
-
DUB
14h 20m
1 stop
$429Multiple Airlines
Fri, May 15 - Mon, May 25
Finnair Logo
9:30 am - 11:30 am
DUB
-
ORD
8h 00mnonstop
Finnair Logo
10:25 pm - 11:50 am
ORD
-
DUB
7h 25mnonstop
$437Finnair
Wed, May 13 - Tue, May 26
Finnair Logo
9:30 am - 11:30 am
DUB
-
ORD
8h 00mnonstop
Finnair Logo
10:25 pm - 11:50 am
ORD
-
DUB
7h 25mnonstop
$438Finnair
Thu, Apr 30 - Mon, May 4
Multiple Airlines Logo
8:35 am - 5:35 pm
DUB
-
ORD
15h 00m
1 stop
Multiple Airlines Logo
5:00 pm - 9:40 am
ORD
-
DUB
10h 40m
1 stop
$439Multiple Airlines
Sat, Feb 14 - Mon, Feb 23
Scandinavian Airlines Logo
10:10 am - 4:45 pm
DUB
-
ORD
12h 35m
1 stop
Scandinavian Airlines Logo
7:20 pm - 6:20 pm
ORD
-
DUB
17h 00m
1 stop
$440Scandinavian Airlines
Thu, Feb 26 - Mon, Mar 9
Scandinavian Airlines Logo
7:05 pm - 4:45 pm
DUB
-
ORD
27h 40m
1 stop
Scandinavian Airlines Logo
8:20 pm - 6:20 pm
ORD
-
DUB
17h 00m
1 stop
$441Scandinavian Airlines
Thu, Apr 16 - Wed, Apr 22
TAP AIR PORTUGAL Logo
6:50 pm - 4:00 pm
DUB
-
ORD
27h 10m
1 stop
TAP AIR PORTUGAL Logo
6:00 pm - 12:05 am
ORD
-
DUB
24h 05m
1 stop
$444TAP AIR PORTUGAL
Wed, May 13 - Tue, May 26
Multiple Airlines Logo
8:35 am - 5:35 pm
DUB
-
ORD
15h 00m
1 stop
Multiple Airlines Logo
10:25 pm - 11:50 am
ORD
-
DUB
7h 25mnonstop
$446Multiple Airlines
Thu, Feb 5 - Tue, Feb 10
Delta Logo
8:50 am - 5:55 pm
DUB
-
MDW
15h 05m
2 stops
Delta Logo
1:26 pm - 3:45 pm
MDW
-
DUB
20h 19m
2 stops
$523Delta
Mon, Feb 2 - Sun, Feb 8
Delta Logo
5:55 am - 6:36 pm
DUB
-
MDW
18h 41m
2 stops
Delta Logo
1:26 pm - 3:45 pm
MDW
-
DUB
20h 19m
2 stops
$524Delta
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 $606 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 $606.

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.

No, with an average price for the route of $698, prices are generally cheapest when you fly direct.

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 November, when tickets cost $472 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of round-trip tickets is $723 and $685 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 Sunday, 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 Fridays 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 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$341
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly with an average 2% increase in price.
Flight from Dublin to St. Louis

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

Insights shared by verified travelers who flew the route from Dublin to Illinois 
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.

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

    The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $746 on average. Morning departures are around 2% cheaper than evening flights, on average. 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 $818.

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 $563 one-way - $698 round-trip

Reviews of the top 3 airlines serving 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 9164 reviews
7.1Entertainment
7.3Comfort
8.1Crew
6.6Food
7.7Boarding
Airline reviews

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

10.0 ExcellentDr. Joseph, Jan 2026
EWR - ORD
Read more United Airlines reviews

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

The staff was nice, however boarding taking 2 hours. That’s insane. Overall very bad experience, a lot of turbulence and when landed in Chicago was horrible. I don’t think I’ll flight with UA again.

An international flight on an apron is pretty unusual in my 40 years of traveling. Departure delay. Luggage despite over an hour connection did not make it to the flight. Actually still in Germany. My luggage was not moved until I reached my final destination despite knowing it to be left in Germany upon my arrival in Chicago. The service left me a little off, both going and returning from Europe. Light on in the cabin even during a night flight and lots of traffic no matter what. Maybe passengers want more service? As a frequent traveler i just want to be able to sleep, the food will be better at the destination anyway. So since the cabin crew woke me up I asked for a cocktail, I did not get the best response although sitting in row 20 premium economy. I usually fly premium economy or business and my 2 flight to Europe in 2025 with United both had luggage delays and other minor issues. American flights to Australia, Canada and Europe went smoothly and Premium plus feels very much like business light. Is United Club becoming a waste and Silver/Gold levels another waste??

They did the one thing that really matters - got to Chicago early.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Very bad! They kept delaying my flight and wouldn’t do anything about it

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

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.

Like - the crew were nice Dislike - sitting on the tarmac for long periods after boarding and landing.

I was not admitted to the flight!!! i need a refund for this.

It’s my new favourite airline! Everything was smooth and relaxed!

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

The same as I stated prior. We incurred extra costs that should be reimbursed, given we were not communicated with about schedule changes.

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

We were in premium economy seats that appeared to be locked in plae, No reclining. My aching back.

I don’t understand how they charge as much as they do for such a poor experience

I wish the plane had pod seating for business class. I had a window seat (8K) and I had to climb over the person sitting on the aisle when I needed to get up. Also there is no partition between the seats for privacy when sleeping. The Asian airlines have much nicer business class seating. Their seats are wider for better comfort when sleeping.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Food was poor quality and the screens for entertainment didn’t work properly

It was a short flight, everything was good with it.

I darted through the Frankfurt airport to make my connecting flight. I asked if it was a possibility to upgrade and the agent did. This was the kindest gesture and it made up for the previous delayed flight and distress/anxiety of anticipating that Zi was going to miss my Frankfurt-Chicago connection. I cannot express my gratitude for the upgrade.. I am 5feet 10 inches do the leg space was amazing.

I meant this flight was not good, the one from Tirana to Frankfurt was better!

I was very grateful for Lufthansa's role in organizing mobility support. The touchscreen on my seat was faulty: slow, stained (I couldn't get it clean), and glitchy. This made selecting movies extremely time consuming, and twice I had to start all over from the beginning.

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

Information on your arrival and departure airports