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Cheap flights from Dublin to Illinois from £339

DUB — ORD
3 Oct — 10 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 2/9£339
Tue 17/1111:30 -
1 stop11h 50m
Tue 1/1218:30 -
1 stop9h 45m
Deal found 31/8£375
Mon 19/1014:15 -
1 stop10h 00m
Fri 13/1118:30 -
1 stop9h 45m
Deal found 29/8£385
Thu 17/914:15 -
1 stop10h 00m
Sun 4/1019:25 -
1 stop11h 50m
Deal found 30/8£393
Wed 16/912:15 -
1 stop15h 10m
Sun 4/1019:25 -
1 stop11h 50m
Deal found 2/9£394
Thu 17/914:15 -
1 stop10h 00m
Tue 29/919:25 -
1 stop9h 40m
Deal found 30/8£399
Sat 21/1120:40 -
1 stop24h 50m
Tue 2/217:10 -
1 stop10h 30m
Deal found 3/9£403
Thu 24/1220:40 -
1 stop23h 05m
Fri 1/121:50 -
1 stop13h 05m
Deal found 3/9£404
Sat 21/1109:00 -
1 stop12h 38m
Tue 2/209:00 -
2 stops16h 30m
Deal found 3/9£405
Thu 24/1208:50 -
2 stops14h 50m
Fri 1/118:15 -
2 stops13h 55m
Deal found 3/9£418
Thu 29/1005:45 -
2 stops17h 15m
Sun 1/1109:29 -
2 stops16h 26m
Deal found 31/8£421
Thu 22/1005:55 -
2 stops18h 05m
Mon 26/1018:44 -
2 stops14h 46m
Deal found 3/9£422

Find flight deals from Dublin to Illinois

Round-trip from

£308

Popular in

August

Cheapest in

November

Average price

£442

Good round-trip deal

£108 or less

Good one-way deal

£700 or less
Icelandair
  • Icelandair
  • 15/1-22/1
  • 2 total stops
  • 21h 35m total
  • Dublin to Illinois
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Highest demand for flights based on searches. 15% potential increase in price (£65 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

Wed 2/12

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Mon 7/12

18:30-10:15

1 stop9h 45m

£376

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 15/9

18:50-16:00

1 stop27h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£377

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 9/9

10:45-12:40

1 stop31h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£382

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 8/10

08:55-09:40

2 stops30h 45m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£389

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 21/11

11:00-18:45

1 stop13h 45m

Chicago O'Hare Intl

Tue 2/2

17:10-16:55

1 stop17h 45m

£404

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 21/11

09:00-15:38

1 stop12h 38m

Chicago O'Hare Intl

Tue 2/2

18:30-08:10

Nonstop7h 40m

£405

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 22/10

05:55-14:15

1 stop14h 20m

Chicago O'Hare Intl

Mon 26/10

17:29-14:30

2 stops16h 01m

£418

DublinChicago

DUB Dublin - MDW Chicago Midway

DUBMDW

Dublin

Thu 24/12

05:45-17:40

2 stops17h 55m

Chicago Midway

Fri 1/1

11:47-07:55

1 stop14h 08m

£420

DublinChicago

DUB Dublin - MDW Chicago Midway

DUBMDW

Dublin

Thu 29/10

05:45-18:00

2 stops17h 15m

Chicago Midway

Sun 1/11

09:29-07:55

2 stops16h 26m

£421

Flights are sorted by cheapest return flights first.

Deals found on 29/8

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

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 £619). 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 Saturday, which is when the least amount of flights are scheduled (16 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 £353 and £531 in January.
The cheapest return price found within the last 5 days was £308 on Icelandair (15 Jan–22 Jan).

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
1,429 reviews
Check prices

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.6

Boarding

7.6

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
1,429 reviews
Finnair
7.6
Good
1,429 reviews
Check prices

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.6

Boarding

7.6

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
10,159 reviews
Finnair
7.6
Good
1,429 reviews
Check prices

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.6

Boarding

7.6

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
1,744 reviews
Finnair
7.6
Good
1,429 reviews
Check prices

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.6

Boarding

7.6

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
3,039 reviews
Finnair
7.6
Good
1,429 reviews
Check prices

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.6

Boarding

7.6

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
8,227 reviews
Finnair
7.6
Good
1,429 reviews
Check prices

Crew

8.2

Entertainment

6.9

Comfort

7.4

Overall

7.6

Boarding

7.6

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, British Airways, and Delta can get you from Dublin to Illinois in just under 11h 50m. Your travel time can differ by up to 5h 25m. 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 (92%), Finnair (87%), American Airlines (81%).

  • 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 Midway) can be booked for £429 on average, our data indicates £1,228 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 £619). 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£681FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£343Average£536FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£345Average£562FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest£449Average£466FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£455Average£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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