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Cheap flights from Dublin to Illinois from £343

DUB — ORD
26 Sep — 3 Oct1
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

Wed 2/1211:30 -
1 stop11h 50m
Mon 7/1218:30 -
1 stop9h 45m
Deal found 25/8£343
Thu 1/1014:15 -
1 stop10h 00m
Sun 4/1019:25 -
1 stop11h 50m
Deal found 24/8£357
Thu 10/914:15 -
1 stop10h 00m
Mon 21/919:25 -
1 stop11h 50m
Deal found 27/8£366
Thu 3/1211:30 -
1 stop11h 50m
Sun 6/1218:30 -
1 stop9h 45m
Deal found 26/8£374
Wed 11/1111:30 -
1 stop11h 50m
Fri 27/1118:30 -
1 stop9h 45m
Deal found 24/8£375
Fri 4/912:15 -
1 stop15h 10m
Mon 2/1118:30 -
1 stop9h 45m
Deal found 27/8£388
Thu 17/914:15 -
1 stop10h 00m
Fri 2/1019:25 -
1 stop11h 50m
Deal found 27/8£392
Thu 17/914:15 -
1 stop10h 00m
Sun 4/1019:25 -
1 stop11h 50m
Deal found 26/8£393
Sat 26/1213:05 -
1 stop11h 40m
Thu 31/1217:10 -
1 stop10h 45m
Deal found 25/8£394
Fri 11/912:15 -
1 stop15h 10m
Tue 22/919:25 -
1 stop9h 40m
Deal found 25/8£395
Thu 17/914:15 -
1 stop10h 00m
Mon 28/919:25 -
1 stop11h 50m
Deal found 26/8£398
Wed 2/912:15 -
1 stop12h 00m
Mon 7/922:25 -
1 stop30h 40m
Deal found 25/8£399

Find flight deals from Dublin to Illinois

Round-trip from

£343

Popular in

August

Cheapest in

November

Average price

£635

Good round-trip deal

£487 or less

Good one-way deal

£500 or less
Icelandair
  • Icelandair
  • 2/12-7/12
  • 2 total stops
  • 21h 35m total
  • Dublin to Illinois
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Highest demand for flights based on searches. 16% potential increase in price (£70 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
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Average for round-trip flights in August 2026
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Price to beat on a round-trip flight from Dublin to Illinois.
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Price to beat on a one-way flight from Dublin to Illinois.
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Cheapflights Fare Finder

 
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 Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 3/12

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Sun 6/12

18:30-10:15

1 stop9h 45m

£374

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 1/10

05:55-14:15

1 stop14h 20m

Chicago O'Hare Intl

Wed 14/10

10:24-08:15

2 stops15h 51m

£411

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 10/10

11:10-21:31

2 stops16h 21m

Chicago O'Hare Intl

Sat 17/10

17:10-18:25

1 stop19h 15m

£416

DublinChicago

DUB Dublin - MDW Chicago Midway

DUBMDW

Dublin

Fri 18/9

05:55-18:33

2 stops18h 38m

Chicago Midway

Thu 1/10

13:00-08:45

1 stop13h 45m

£417

DublinChicago

DUB Dublin - MDW Chicago Midway

DUBMDW

Dublin

Wed 7/10

05:55-18:00

2 stops18h 05m

Chicago Midway

Sun 11/10

10:01-07:55

1 stop15h 54m

£417

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 14/9

11:10-22:32

2 stops17h 22m

Chicago O'Hare Intl

Thu 24/9

13:55-09:15

1 stop13h 20m

£418

DublinChicago

DUB Dublin - MDW Chicago Midway

DUBMDW

Dublin

Sat 7/11

09:55-16:47

1 stop12h 52m

Chicago Midway

Sat 21/11

09:30-08:00

2 stops16h 30m

£422

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 3/12

10:55-16:45

2 stops35h 50m

Chicago O'Hare Intl

Sun 6/12

19:15-11:45

1 stop34h 30m

£435

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 26/12

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Thu 31/12

19:15-09:20

2 stops32h 05m

£469

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 12/9

14:15-18:15

1 stop10h 00m

Chicago O'Hare Intl

Mon 21/9

19:25-13:15

1 stop11h 50m

£503

Flights are sorted by cheapest return flights first.

Deals found on 26/8

Showing 1-10 of 34 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

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, November is the cheapest month in which you can book a flight from Dublin to Illinois (average of £351). Flying from Dublin to Illinois in July is currently the most expensive (average of £614). 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?

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

The most flights from DUB to USIL are scheduled on a Wednesday (18 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (13 on average).

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

Airfare is typical for this route at the moment.
Dublin to Illinois flights typically cost between £341 and £527 in December.
The cheapest return price found within the last 5 days was £343 on Icelandair (2 Dec–7 Dec).

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 37 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Illinois

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
7.6
Good
1,430 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Entertainment

6.9

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Finnair
7.6
Good
1,430 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Entertainment

6.9

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
United Airlines
7.4
Good
10,132 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Entertainment

6.9

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Aer Lingus
7.3
Good
1,731 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Entertainment

6.9

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Icelandair
6.9
Okay
738 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Entertainment

6.9

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Lufthansa
6.8
Okay
8,225 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Crew

8.2

Overall

7.6

Boarding

7.7

Entertainment

6.9

Comfort

7.4

Food

6.7

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

Related info for your journey

  • 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?

    Delta can get you from Dublin to Illinois in just under 14h 20m. Your travel time can differ by up to . There are 3661 mi between Dublin and Illinois.

  • 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: Alaska Airlines (93%), Finnair (92%), American Airlines (82%).

  • What are the cheapest flights from Dublin to Illinois?

    Looking at all options, your cheapest flight can be booked for £404. While the most popular route (Dublin - Chicago O'Hare Intl) can be booked for £357 on average, our data indicates £1,063 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, November is the cheapest month in which you can book a flight from Dublin to Illinois (average of £351). Flying from Dublin to Illinois in July is currently the most expensive (average of £614). 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

Top 6 airlines flying from Dublin to Illinois

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£294Average£469FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£327Average£675FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£341Average£535FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£342Average£557FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest£445Average£462FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£451Average£653FlexibilityNo cancel feeOn-time76%
Search Finnair flights

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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.

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

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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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