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Cheap flights from Dublin to Illinois from £354

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
10 jul. — 17 jul.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 10 junio 2026.

dom. 27/908:35
DUB
-
ORD
2 stops18h 37m
British Airways
sáb. 3/1021:15
ORD
-
DUB
1 stop11h 10m
British Airways
Deal found 6/6£468
dom. 14/609:30
DUB
-
ORD
Nonstop8h 00m
Multiple Airlines
dom. 21/612:00
ORD
-
DUB
1 stop15h 35m
Multiple Airlines
Deal found 7/6£469
mié. 7/1009:40
DUB
-
ORD
1 stop14h 10m
Finnair
lun. 12/1012:04
ORD
-
DUB
1 stop15h 41m
Finnair
Deal found 7/6£471
mié. 12/811:30
DUB
-
ORD
1 stop16h 25m
JetBlue
lun. 17/809:39
ORD
-
DUB
1 stop17h 21m
JetBlue
Deal found 9/6£472
lun. 31/809:30
DUB
-
ORD
Nonstop8h 00m
American Airlines
vie. 25/916:45
ORD
-
DUB
1 stop10h 50m
American Airlines
Deal found 8/6£472
vie. 10/712:15
DUB
-
ORD
1 stop15h 10m
Icelandair
mar. 21/719:25
ORD
-
DUB
1 stop9h 40m
Icelandair
Deal found 10/6£473
vie. 9/1011:45
DUB
-
ORD
1 stop13h 26m
Finnair
lun. 12/1012:04
ORD
-
DUB
1 stop15h 41m
Finnair
Deal found 8/6£474
dom. 30/809:30
DUB
-
ORD
Nonstop8h 00m
American Airlines
mié. 30/913:15
ORD
-
DUB
1 stop11h 15m
American Airlines
Deal found 6/6£475
mié. 15/710:40
DUB
-
ORD
1 stop14h 35m
JetBlue
mié. 7/1014:15
ORD
-
DUB
1 stop12h 05m
JetBlue
Deal found 8/6£475
jue. 25/611:30
DUB
-
ORD
1 stop16h 00m
JetBlue
mar. 7/709:40
ORD
-
DUB
1 stop17h 20m
JetBlue
Deal found 10/6£476
dom. 30/813:45
DUB
-
ORD
1 stop15h 15m
American Airlines
jue. 1/1013:15
ORD
-
DUB
1 stop11h 15m
American Airlines
Deal found 7/6£477
jue. 25/610:40
DUB
-
ORD
1 stop14h 45m
JetBlue
jue. 9/709:40
ORD
-
DUB
1 stop17h 20m
JetBlue
Deal found 6/6£478

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 10 junio 2026.

Round-trip from

£468

One-way from

£354

Popular in

August

Cheapest in

November

Average price

£506

Good round-trip deal

£599 or less

Good one-way deal

£496 or less
British Airways
  • British Airways
  • 27/9-3/10
  • 4 total stops
  • 32h 42m total
  • Dublin to Illinois
Search Deals
29/8
  • 29/8
  • 2 total stops
  • 24h 25m total
  • Dublin to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£48 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 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 10 junio 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

sáb. 29/8

14:15-18:15

1 stop10h 00m

Chicago O'Hare Intl

mié. 23/9

22:25-11:05

1 stop30h 40m

£508

DublinChicago

DUB - ORD

DUBORD

Dublin

sáb. 5/12

09:00-14:56

1 stop11h 56m

Chicago O'Hare Intl

lun. 7/12

12:40-07:30

2 stops12h 50m

£539

DublinChicago

DUB - ORD

DUBORD

Dublin

vie. 4/12

09:00-14:56

1 stop11h 56m

Chicago O'Hare Intl

lun. 7/12

18:30-08:10

Nonstop7h 40m

£540

DublinChicago

DUB - ORD

DUBORD

Dublin

jue. 5/11

10:40-13:20

Nonstop8h 40m

Chicago O'Hare Intl

lun. 9/11

18:30-08:10

Nonstop7h 40m

£541

DublinChicago

DUB - ORD

DUBORD

Dublin

mié. 23/9

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

vie. 2/10

19:15-09:15

2 stops32h 00m

£548

DublinChicago

DUB - ORD

DUBORD

Dublin

mié. 8/7

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

mar. 21/7

17:00-18:50

1 stop19h 50m

£549

DublinChicago

DUB - ORD

DUBORD

Dublin

vie. 10/7

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

jue. 16/7

16:30-14:30

2 stops16h 00m

£549

DublinChicago

DUB - ORD

DUBORD

Dublin

lun. 3/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

lun. 10/8

21:15-18:40

1 stop15h 25m

£550
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

mar. 7/7

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

dom. 12/7

22:20-11:50

Nonstop7h 30m

£551

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

£551

Flights are sorted by cheapest return flights first.

Deals found on 9/6

Showing 1-10 of 35 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 £203). Flying from Dublin to Illinois in July is currently the most expensive (average of £398). 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 10 junio 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 10 junio 2026.

The most flights from DUB to USIL are scheduled on a Monday (19 on average). You will have fewer flight options on Sunday, 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 10 junio 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
1,405 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Overall

7.7

Comfort

7.4

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
1,405 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Overall

7.7

Comfort

7.4

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
9,808 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Overall

7.7

Comfort

7.4

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
1,603 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Overall

7.7

Comfort

7.4

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
411 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Overall

7.7

Comfort

7.4

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
8,052 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Crew

8.2

Food

6.7

Boarding

7.7

Overall

7.7

Comfort

7.4

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?

    Icelandair, United Airlines, and Delta can get you from Dublin to Illinois in just under 10h. Your travel time can differ by up to 5h 16m. 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 £385. While the most popular route (Dublin - Chicago O'Hare Intl) can be booked for £436 on average, our data indicates £587 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 £203). Flying from Dublin to Illinois in July is currently the most expensive (average of £398). 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 4 airlines flying from Dublin to Illinois

Discover the top 4 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 10 junio 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£333Average£652FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£345Average£537FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£355Average£646FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£461Average£665FlexibilityNo 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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