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Cheap flights from Dublin to Illinois from £408

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 19/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
5 Sep — 12 Sep1
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 6 August 2026.

Thu 1/1011:35 -
Nonstop8h 25m
Sun 4/1022:25 -
1 stop11h 55m
Deal found 5/8£454
Thu 1/1019:50 -
2 stops26h 20m
Sun 4/1019:15 -
2 stops17h 50m
Deal found 5/8£455
Thu 27/811:30 -
1 stop16h 28m
Sat 5/906:00 -
1 stop21h 00m
Deal found 2/8£456
Thu 17/916:45 -
Nonstop8h 30m
Thu 15/1017:00 -
1 stop12h 20m
Deal found 5/8£457
Mon 31/809:40 -
2 stops35h 15m
Mon 7/919:25 -
2 stops20h 15m
Deal found 3/8£457
Thu 10/919:50 -
2 stops26h 20m
Mon 14/919:15 -
2 stops32h 55m
Deal found 5/8£459
Sun 27/1211:30 -
1 stop11h 50m
Mon 11/118:30 -
1 stop9h 45m
Deal found 5/8£460
Sat 5/909:30 -
Nonstop8h 00m
Mon 14/921:00 -
Nonstop7h 35m
Deal found 4/8£463
Wed 2/909:30 -
Nonstop8h 00m
Wed 9/921:00 -
Nonstop7h 35m
Deal found 5/8£463
Fri 4/909:30 -
Nonstop8h 00m
Tue 8/922:30 -
1 stop12h 30m
Deal found 2/8£466
Sun 27/1207:35 -
1 stop12h 10m
Mon 11/121:50 -
1 stop11h 35m
Deal found 3/8£466
Wed 2/909:30 -
Nonstop8h 00m
Wed 9/922:25 -
1 stop13h 35m
Deal found 2/8£468

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 6 August 2026.

Round-trip from

£454

One-way from

£408

Popular in

August

Cheapest in

November

Average price

£642

Good round-trip deal

£503 or less

Good one-way deal

£628 or less
1/10-4/10
  • 1/10-4/10
  • 1 total stop
  • 20h 20m total
  • Dublin to Illinois
Search Deals
JetBlue
  • JetBlue
  • 19/8
  • 1 total stop
  • 14h 47m total
  • Dublin to Illinois
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£64 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 August 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 6 August 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 Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 29/9

14:15-18:15

1 stop10h 00m

Chicago O'Hare Intl

Sat 3/10

19:25-11:05

1 stop9h 40m

£472

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 27/8

14:15-18:15

1 stop10h 00m

Chicago O'Hare Intl

Mon 28/12

18:30-10:15

1 stop9h 45m

£478

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 9/9

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

Tue 22/9

10:25-10:10

2 stops17h 45m

£481

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 29/9

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

Sat 3/10

19:15-18:25

2 stops17h 10m

£483

DublinChicago

DUB Dublin - MDW Chicago Midway

DUBMDW

Dublin

Sat 10/10

11:00-22:33

1 stop17h 33m

Chicago Midway

Sat 31/10

11:33-07:45

1 stop15h 12m

£509

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sun 1/11

18:55-16:45

2 stops27h 50m

Chicago O'Hare Intl

Tue 10/11

19:15-10:10

2 stops32h 55m

£528

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 2/12

10:40-13:20

Nonstop8h 40m

Chicago O'Hare Intl

Sun 6/12

18:30-08:10

Nonstop7h 40m

£543

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 5/11

10:40-13:20

Nonstop8h 40m

Chicago O'Hare Intl

Mon 9/11

18:30-08:10

Nonstop7h 40m

£544
Fastest return journey

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sun 23/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 7/9

22:20-11:50

Nonstop7h 30m

£558

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 29/9

09:30-19:39

1 stop16h 09m

Chicago O'Hare Intl

Sat 3/10

21:01-09:35

1 stop30h 34m

£561

Flights are sorted by cheapest return flights first.

Deals found on 2/8

Showing 1-10 of 40 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, November is the cheapest month in which you can book a flight from Dublin to Illinois (average of £354). Flying from Dublin to Illinois in August is currently the most expensive (average of £631). 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 6 August 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 6 August 2026.

The most flights from DUB to USIL are scheduled on a Wednesday (20 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (15 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 £486 and £714 in October.
The cheapest return price found within the last 5 days was £454 on Multiple Airlines (1 Oct–4 Oct).

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 50 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 6 August 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
1,427 reviews
Check prices

Entertainment

6.9

Boarding

7.7

Overall

7.7

Food

6.7

Crew

8.2

Comfort

7.4

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
7.7
Good
1,427 reviews
Finnair
7.7
Good
1,427 reviews
Check prices

Entertainment

6.9

Boarding

7.7

Overall

7.7

Food

6.7

Crew

8.2

Comfort

7.4

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
10,076 reviews
Finnair
7.7
Good
1,427 reviews
Check prices

Entertainment

6.9

Boarding

7.7

Overall

7.7

Food

6.7

Crew

8.2

Comfort

7.4

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
1,691 reviews
Finnair
7.7
Good
1,427 reviews
Check prices

Entertainment

6.9

Boarding

7.7

Overall

7.7

Food

6.7

Crew

8.2

Comfort

7.4

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
7.0
Good
721 reviews
Finnair
7.7
Good
1,427 reviews
Check prices

Entertainment

6.9

Boarding

7.7

Overall

7.7

Food

6.7

Crew

8.2

Comfort

7.4

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
8,178 reviews
Finnair
7.7
Good
1,427 reviews
Check prices

Entertainment

6.9

Boarding

7.7

Overall

7.7

Food

6.7

Crew

8.2

Comfort

7.4

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

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, Scandinavian Airlines, and KLM can get you from Dublin to Illinois in just under 10h. Your travel time can differ by up to 24h 30m. 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 (93%), Finnair (93%), American Airlines (83%).

  • What are the cheapest flights from Dublin to Illinois?

    Looking at all options, your cheapest flight can be booked for £387. While the most popular route (Dublin - Chicago Midway) can be booked for £412 on average, our data indicates £1,052 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 £354). Flying from Dublin to Illinois in August is currently the most expensive (average of £631). 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 6 airlines flying from Dublin to Illinois

Discover the top 6 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 6 August 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£297Average£474FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£331Average£647FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£344Average£544FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£353Average£642FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest£450Average£468FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£456Average£660FlexibilityNo 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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