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Cheap flights from Dublin to Illinois from £375

DUB — ORD
18 Sep — 25 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

Tue 29/911:40 -
2 stops34h 30m
Sat 3/1019:15 -
2 stops17h 10m
Deal found 19/8£448
Thu 27/808:40 -
1 stop14h 35m
Tue 1/918:15 -
1 stop11h 05m
Deal found 14/8£454
Mon 2/1112:35 -
2 stops34h 10m
Sat 7/1119:15 -
2 stops33h 30m
Deal found 17/8£454
Fri 20/1118:55 -
2 stops27h 50m
Wed 2/1219:15 -
2 stops33h 30m
Deal found 17/8£457
Mon 23/1112:30 -
1 stop34h 15m
Thu 26/1119:15 -
1 stop17h 05m
Deal found 16/8£457
Wed 16/911:40 -
2 stops34h 30m
Mon 21/919:15 -
2 stops32h 55m
Deal found 15/8£458
Thu 17/919:50 -
2 stops26h 20m
Mon 21/919:15 -
2 stops32h 30m
Deal found 18/8£459
Tue 25/820:10 -
1 stop22h 20m
Mon 31/817:29 -
2 stops15h 36m
Deal found 14/8£462
Wed 30/911:35 -
Nonstop8h 25m
Wed 7/1020:50 -
1 stop11h 45m
Deal found 16/8£464
Sun 27/1208:45 -
1 stop12h 45m
Mon 11/121:50 -
1 stop11h 35m
Deal found 17/8£472
Fri 30/1009:40 -
1 stop17h 53m
Sun 1/1111:42 -
1 stop14h 03m
Deal found 19/8£484
Sat 7/1109:55 -
1 stop12h 52m
Sat 14/1113:22 -
2 stops12h 23m
Deal found 18/8£488

Find flight deals from Dublin to Illinois

Round-trip from

£448

One-way from

£375

Popular in

August

Cheapest in

November

Average price

£642

Good round-trip deal

£537 or less

Good one-way deal

£565 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 29/9-3/10
  • 4 total stops
  • 51h 40m total
  • Dublin to Illinois
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TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 11/9
  • 1 total stop
  • 16h 30m total
  • Dublin to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£69 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 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

Wed 16/9

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

Mon 21/9

19:15-10:10

2 stops32h 55m

£458

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 29/9

19:05-16:10

1 stop27h 05m

Chicago O'Hare Intl

Sat 3/10

19:15-18:25

2 stops17h 10m

£471

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Fri 4/9

05:55-16:59

2 stops17h 04m

Chicago O'Hare Intl

Fri 18/9

15:05-12:40

2 stops15h 35m

£502

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 20/10

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

Wed 28/10

20:15-10:45

2 stops33h 30m

£514

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

£542

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 28/12

18:35-16:45

2 stops28h 10m

Chicago O'Hare Intl

Sat 2/1

19:15-10:45

2 stops33h 30m

£560
Fastest return journey

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 12/10

11:35-13:40

Nonstop8h 05m

Chicago O'Hare Intl

Wed 11/11

18:30-08:10

Nonstop7h 40m

£567

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Fri 11/9

09:50-14:43

1 stop34h 53m

Chicago O'Hare Intl

Sun 13/9

14:00-11:10

2 stops15h 10m

£577

DublinChicago

DUB Dublin - MDW Chicago Midway

DUBMDW

Dublin

Mon 2/11

11:30-23:05

2 stops17h 35m

Chicago Midway

Sat 7/11

13:25-10:15

2 stops14h 50m

£652

DublinChicago

DUB Dublin - MDW Chicago Midway

DUBMDW

Dublin

Tue 29/9

05:55-18:19

2 stops18h 24m

Chicago Midway

Sat 3/10

18:40-10:00

1 stop9h 20m

£701

Flights are sorted by cheapest return flights first.

Deals found on 14/8

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 £352). Flying from Dublin to Illinois in August is currently the most expensive (average of £627). 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 (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 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 £487 and £720 in September.
The cheapest return price found within the last 5 days was £448 on Scandinavian Airlines (29 Sept–3 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 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
1,427 reviews
Check prices

Comfort

7.5

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

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
1,427 reviews
Finnair
7.6
Good
1,427 reviews
Check prices

Comfort

7.5

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

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
10,104 reviews
Finnair
7.6
Good
1,427 reviews
Check prices

Comfort

7.5

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

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
1,711 reviews
Finnair
7.6
Good
1,427 reviews
Check prices

Comfort

7.5

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

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
731 reviews
Finnair
7.6
Good
1,427 reviews
Check prices

Comfort

7.5

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

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
8,202 reviews
Finnair
7.6
Good
1,427 reviews
Check prices

Comfort

7.5

Crew

8.2

Entertainment

6.9

Overall

7.6

Boarding

7.7

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?

    Scandinavian Airlines and Delta can get you from Dublin to Illinois in just under 18h 11m. Your travel time can differ by up to 16h 19m. There are 3664 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 (92%), American Airlines (82%).

  • What are the cheapest flights from Dublin to Illinois?

    Looking at all options, your cheapest flight can be booked for £396. While the most popular route (Dublin - Chicago O'Hare Intl) can be booked for £434 on average, our data indicates £1,083 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 £352). Flying from Dublin to Illinois in August is currently the most expensive (average of £627). 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£296Average£472FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£329Average£679FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£343Average£541FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£351Average£638FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest£448Average£465FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£454Average£657FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

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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