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Cheap flights from Dublin to Illinois from £339

DUB — ORD
16 Oct — 23 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
Sun 6/1218:30 -
1 stop9h 45m
Deal found 15/9£339
Tue 24/1111:30 -
1 stop11h 50m
Fri 26/218:30 -
1 stop9h 45m
Deal found 11/9£342
Thu 5/1105:10 -
1 stop14h 00m
Thu 12/1118:50 -
1 stop16h 55m
Deal found 15/9£378
Thu 5/1105:10 -
1 stop14h 00m
Thu 12/1121:50 -
1 stop13h 20m
Deal found 12/9£381
Thu 24/1208:50 -
2 stops14h 50m
Fri 1/118:15 -
2 stops13h 55m
Deal found 16/9£398
Thu 5/1108:50 -
2 stops15h 10m
Thu 12/1111:27 -
2 stops15h 33m
Deal found 16/9£398
Tue 22/908:55 -
2 stops15h 24m
Tue 24/1112:30 -
2 stops14h 30m
Deal found 15/9£402
Wed 7/1005:55 -
2 stops18h 05m
Sun 11/1012:27 -
1 stop13h 28m
Deal found 16/9£403
Wed 7/1005:55 -
2 stops18h 05m
Mon 12/1018:44 -
2 stops15h 56m
Deal found 16/9£404
Fri 30/1009:40 -
1 stop17h 53m
Fri 6/1112:27 -
2 stops14h 58m
Deal found 15/9£406

Find flight deals from Dublin to Illinois

Round-trip from

£312

Popular in

August

Cheapest in

November

Average price

£414

Good round-trip deal

£108 or less

Good one-way deal

£563 or less
Icelandair
  • Icelandair
  • 2/3-7/3
  • 2 total stops
  • 21h 35m total
  • Dublin to Illinois
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Highest demand for flights based on searches. 14% potential increase in price (£59 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in September 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

Wed 2/12

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Sun 6/12

18:30-10:15

1 stop9h 45m

£340

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 24/9

10:40-19:01

1 stop14h 21m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£355

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sun 15/11

20:40-13:45

1 stop23h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£356

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 16/12

08:50-22:57

2 stops20h 07m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£360

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sun 14/3

05:45-21:04

2 stops21h 19m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£369

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 18/2

08:50-14:25

1 stop11h 35m

Chicago O'Hare Intl

Wed 24/2

18:25-14:30

1 stop14h 05m

£396

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 26/12

05:45-14:25

1 stop14h 40m

Chicago O'Hare Intl

Thu 31/12

07:00-08:05

2 stops19h 05m

£399

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 28/10

08:50-15:25

1 stop11h 35m

Chicago O'Hare Intl

Sun 1/11

17:29-16:20

2 stops16h 51m

£400

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 14/10

08:55-14:30

1 stop11h 35m

Chicago O'Hare Intl

Wed 21/10

13:50-10:00

1 stop14h 10m

£401

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 21/10

11:10-21:43

2 stops16h 33m

Chicago O'Hare Intl

Wed 28/10

12:30-07:55

1 stop14h 25m

£404

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 32 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 £355). Flying from Dublin to Illinois in July is currently the most expensive (average of £620). 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 Monday (13 on average). You will have fewer flight options on Wednesday, 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?

Airfare is below average for this route at the moment.
Dublin to Illinois flights typically cost between £417 and £532 in March.
The cheapest return price found within the last 5 days was £312 on Icelandair (2 Mar–7 Mar).

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 71 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

Boarding

7.7

Overall

7.6

Crew

8.2

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

Boarding

7.7

Overall

7.6

Crew

8.2

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
10,213 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Boarding

7.7

Overall

7.6

Crew

8.2

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
1,763 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Boarding

7.7

Overall

7.6

Crew

8.2

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.
JetBlue
7.1
Good
3,038 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Boarding

7.7

Overall

7.6

Crew

8.2

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
8,222 reviews
Finnair
7.6
Good
1,430 reviews
Check prices

Boarding

7.7

Overall

7.6

Crew

8.2

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?

    Icelandair, Delta, and KLM can get you from Dublin to Illinois in just under 11h 50m. Your travel time can differ by up to 6h 40m. 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: Alaska Airlines (88%), Finnair (82%), American Airlines (78%).

  • What are the cheapest flights from Dublin to Illinois?

    Looking at all options, your cheapest flight can be booked for £105. While the most popular route (Dublin - Chicago O'Hare Intl) can be booked for £340 on average, our data indicates £1,210 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 £355). Flying from Dublin to Illinois in July is currently the most expensive (average of £620). 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 5 airlines flying from Dublin to Illinois

AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£330Average£647FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£344Average£534FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£346Average£595FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest£449Average£467FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£456Average£659FlexibilityNo 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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