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Cheap flights from Dublin to Illinois from £371

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
4 juil. — 11 juil.1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dublin to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Dublin to Illinois
Explore the most affordable flight options available from Dublin to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 juin 2026.

mar. 30/612:15
DUB
-
MDW
1 stop27h 25m
Multiple Airlines
ven. 10/715:20
MDW
-
DUB
1 stop13h 35m
Multiple Airlines
Deal found 30/5£464
jeu. 5/1113:10
DUB
-
ORD
1 stop11h 35m
Multiple Airlines
lun. 9/1120:10
ORD
-
DUB
Nonstop7h 20m
Multiple Airlines
Deal found 2/6£466
jeu. 11/611:45
DUB
-
ORD
1 stop14h 00m
Finnair
mer. 17/622:20
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 3/6£468
mer. 23/910:40
DUB
-
ORD
1 stop14h 42m
JetBlue
ven. 2/1013:00
ORD
-
DUB
1 stop14h 00m
JetBlue
Deal found 3/6£469
lun. 22/610:00
DUB
-
MDW
1 stop14h 31m
Multiple Airlines
lun. 29/613:49
MDW
-
DUB
1 stop12h 06m
Multiple Airlines
Deal found 1/6£470
ven. 9/1009:40
DUB
-
ORD
1 stop14h 10m
Finnair
lun. 12/1012:04
ORD
-
DUB
1 stop15h 41m
Finnair
Deal found 4/6£472
mer. 23/916:45
DUB
-
ORD
Nonstop8h 30m
Aer Lingus
ven. 2/1021:00
ORD
-
DUB
Nonstop7h 35m
Aer Lingus
Deal found 4/6£472
ven. 16/1009:40
DUB
-
ORD
1 stop14h 10m
Finnair
lun. 19/1012:04
ORD
-
DUB
1 stop15h 41m
Finnair
Deal found 3/6£474
mar. 23/609:30
DUB
-
ORD
Nonstop7h 59m
Finnair
lun. 29/622:20
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 1/6£475
mar. 14/714:15
DUB
-
ORD
1 stop10h 00m
Icelandair
mar. 28/719:25
ORD
-
DUB
1 stop9h 40m
Icelandair
Deal found 31/5£475
lun. 21/1211:30
DUB
-
ORD
Nonstop8h 30m
Aer Lingus
sam. 2/120:10
ORD
-
DUB
Nonstop7h 20m
Aer Lingus
Deal found 31/5£478
jeu. 3/919:50
DUB
-
ORD
2 stops26h 20m
Scandinavian Airlines
lun. 5/1019:15
ORD
-
DUB
1 stop17h 05m
Scandinavian Airlines
Deal found 1/6£479

Find flight deals from Dublin to Illinois

Keep the following information in mind while searching for Dublin to Illinois flight deals. Data was last updated 4 juin 2026.

Round-trip from

£464

One-way from

£371

Popular in

August

Cheapest in

September

Average price

£488

Good round-trip deal

£576 or less

Good one-way deal

£493 or less
30/6-10/7
  • 30/6-10/7
  • 2 total stops
  • 41h 00m total
  • Dublin to Illinois
Search Deals
JetBlue
  • JetBlue
  • 11/7
  • 1 total stop
  • 29h 25m total
  • Dublin to Illinois
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£32 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Dublin to Illinois.
Search Deals
Price to beat on a one-way flight from Dublin to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dublin to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 juin 2026.
Use the filters below to find and compare flights from Dublin to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinChicago

DUB - ORD

DUBORD

Dublin

mer. 23/9

10:40-19:22

1 stop14h 42m

Chicago O'Hare Intl

ven. 2/10

13:00-09:00

1 stop14h 00m

£469

DublinChicago

DUB - ORD

DUBORD

Dublin

mer. 23/9

16:45-19:15

Nonstop8h 30m

Chicago O'Hare Intl

ven. 2/10

21:00-10:35

Nonstop7h 35m

£472

DublinChicago

DUB - MDW

DUBMDW

Dublin

ven. 26/6

08:55-18:18

2 stops15h 23m

Chicago Midway

jeu. 9/7

12:41-10:00

2 stops15h 19m

£514

DublinChicago

DUB - MDW

DUBMDW

Dublin

mar. 30/6

05:55-18:31

2 stops18h 36m

Chicago Midway

ven. 10/7

19:06-16:40

2 stops15h 34m

£516

DublinChicago

DUB - ORD

DUBORD

Dublin

jeu. 5/11

10:40-13:20

Nonstop8h 40m

Chicago O'Hare Intl

lun. 9/11

18:30-08:10

Nonstop7h 40m

£542

DublinChicago

DUB - ORD

DUBORD

Dublin

lun. 3/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

lun. 10/8

20:40-19:35

1 stop16h 55m

£551
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

lun. 3/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

lun. 10/8

22:20-11:50

Nonstop7h 30m

£552

DublinChicago

DUB - ORD

DUBORD

Dublin

mar. 7/7

13:45-19:26

1 stop11h 41m

Chicago O'Hare Intl

dim. 12/7

22:20-11:50

Nonstop7h 30m

£556

DublinChicago

DUB - ORD

DUBORD

Dublin

jeu. 10/9

19:50-16:10

2 stops26h 20m

Chicago O'Hare Intl

mer. 16/9

13:55-18:20

2 stops22h 25m

£562

DublinChicago

DUB - ORD

DUBORD

Dublin

mer. 23/9

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

ven. 2/10

19:15-09:15

2 stops32h 00m

£580

Flights are sorted by cheapest return flights first.

Deals found on 1/6

Showing 1-10 of 37 resultsSorted by cheapest first
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Best time to book a flight from Dublin to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Dublin with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Dublin to Illinois?

Currently, September is the cheapest month in which you can book a flight from Dublin to Illinois (average of £202). Flying from Dublin to Illinois in July is currently the most expensive (average of £397). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DUB to IL?

Find hourly flight availability from Dublin to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 juin 2026.

When flying from Dublin to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Dublin to Illinois

Explore weekly flight availability from Dublin to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 4 juin 2026.

The most flights from DUB to USIL are scheduled on a Monday (19 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (12 on average).

How much does it cost for a return flight from Dublin to Illinois?

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

The price you pay for your flight from Dublin to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 4 juin 2026.
Read through reviews of airlines operating flights from Dublin to Illinois, such as Finnair,United Airlines, andAer Lingus. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.7
Good
1,401 reviews
Check prices

Comfort

7.4

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
Finnair
7.7
Good
1,401 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Comfort

7.4

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
United Airlines
7.4
Good
9,774 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Comfort

7.4

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
Aer Lingus
7.3
Good
1,594 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Comfort

7.4

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
Brussels Airlines
7.2
Good
409 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Comfort

7.4

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space
Lufthansa
6.8
Okay
8,036 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Comfort

7.4

Crew

8.2

Food

6.7

Overall

7.7

Boarding

7.7

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

HEL - KAO

It’s a small plane with minimal service and luggage space

Related info for your journey

Find useful and relevant information for your journey from Dublin to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Dublin to Illinois?

    For a flight from Dublin to Illinois, you will be flying from Dublin. Dublin (DUB) is just 5.7 mi from the center of the city.

  • How long is the flight from Dublin to Illinois?

    JetBlue, Aer Lingus, and Delta can get you from Dublin to Illinois in just under 8h 30m. Your travel time can differ by up to 6h 53m. There are 3661 mi between Dublin and Illinois. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most reliable airlines from Dublin to Illinois?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Dublin to Illinois on time: American Airlines (80%), Aer Lingus (80%), British Airways (80%).

  • What are the cheapest flights from Dublin to Illinois?

    Looking at all options, your cheapest flight can be booked for £383. While the most popular route (Dublin - Chicago O'Hare Intl) can be booked for £434 on average, our data indicates £584 when flying from Dublin to Illinois.

  • Can I find deals for flights from Dublin to Illinois that include hotel bookings?

    Yes. In addition to deals on Dublin to Illinois flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dublin to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Illinois.

  • Can I find deals for business class flights from Dublin to Illinois?

    Yes. Cheapflights offers flight deals from Dublin to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Dublin to Illinois?

    Currently, September is the cheapest month in which you can book a flight from Dublin to Illinois (average of £202). Flying from Dublin to Illinois in July is currently the most expensive (average of £397). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from Dublin to Illinois

Discover the top 5 airlines that operate flights from Dublin to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 juin 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£331Average£649FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£343Average£534FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£354Average£643FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£453Average£592FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FinnairCheapest£457Average£661FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dublin to Illinois?

Deals for Dublin to Illinois flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Dublin to Illinois?

Millions of users choose and trust Cheapflights to book the best flight deals from Dublin to Illinois for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Dublin to Illinois with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Dublin to Illinois flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Dublin to Illinois become cheaper?

Yes! Start tracking prices for Dublin to Illinois flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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