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Cheap flights from Dublin to Illinois from £312

DUB — ORD
5 Dec — 12 Dec1
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

Sun 6/1219:05 -
1 stop27h 40m
Thu 10/1219:10 -
1 stop17h 10m
Deal found 4/11£436
Sat 21/1119:05 -
1 stop27h 40m
Mon 23/1119:10 -
1 stop17h 10m
Deal found 4/11£441
Sat 5/1211:30 -
1 stop11h 50m
Fri 25/1218:30 -
1 stop9h 45m
Deal found 4/11£448
Thu 19/1111:30 -
1 stop11h 50m
Mon 23/1118:30 -
1 stop9h 45m
Deal found 4/11£456
Sun 6/1219:05 -
1 stop27h 40m
Tue 29/1219:10 -
1 stop34h 35m
Deal found 4/11£462
Wed 16/1211:30 -
1 stop11h 50m
Mon 4/118:30 -
1 stop9h 45m
Deal found 31/10£465
Sat 21/1119:05 -
1 stop27h 40m
Sun 22/1119:10 -
1 stop34h 35m
Deal found 4/11£466
Sat 21/1110:05 -
2 stops36h 40m
Mon 30/1119:10 -
1 stop17h 10m
Deal found 1/11£468
Tue 24/1119:05 -
1 stop27h 40m
Sun 29/1119:10 -
2 stops33h 35m
Deal found 2/11£469
Tue 24/1111:30 -
2 stops35h 15m
Mon 30/1119:10 -
1 stop17h 10m
Deal found 3/11£470

Find flight deals from Dublin to Illinois

Round-trip from

£401

One-way from

£312

Popular in

August

Cheapest in

November

Average price

£356

Good round-trip deal

£537 or less

Good one-way deal

£444 or less
Icelandair
  • Icelandair
  • 1/2-8/2
  • 2 total stops
  • 21h 35m total
  • Dublin to Illinois
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11/12-31/12
  • 11/12-31/12
  • 3 total stops
  • 47h 35m total
  • Dublin to Illinois
Search Deals
Highest demand for flights based on searches. 11% 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 November 2026
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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.
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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

Sat 9/1

08:50-19:16

2 stops16h 26m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£333

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 9/1

08:50-19:16

2 stops16h 26m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£333

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 19/11

04:25-15:30

1 stop17h 05m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£337

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 21/11

16:55-15:30

1 stop28h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£337
Fastest return journey

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 7/12

15:50-18:20

Nonstop8h 30m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£404

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sun 10/1

16:40-19:15

Nonstop8h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£410

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sun 29/11

10:40-18:20

1 stop37h 40m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£469

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 9/1

04:15-13:49

2 stops39h 34m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£476

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 26/11

06:10-18:20

1 stop18h 10m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£477

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 10/12

05:45-14:25

1 stop14h 40m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£482

Flights are sorted by cheapest return flights first.

Deals found on 2/11

Showing 1-10 of 21 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 £402). Flying from Dublin to Illinois in July is currently the most expensive (average of £621). 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 (11 on average).

How much does it cost for a return flight from Dublin to Illinois?

Airfare is typical for this route at the moment.
Dublin to Illinois flights typically cost between £356 and £500 in February.
The cheapest return price found within the last 5 days was £401 on Icelandair (1 Feb–8 Feb).

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,Aer Lingus, andUnited Airlines. 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
1,416 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Crew

8.2

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
1,416 reviews
Finnair
7.6
Good
1,416 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Crew

8.2

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
1,879 reviews
Finnair
7.6
Good
1,416 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Crew

8.2

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
7.3
Good
10,462 reviews
Finnair
7.6
Good
1,416 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Crew

8.2

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
3,064 reviews
Finnair
7.6
Good
1,416 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Crew

8.2

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
8,299 reviews
Finnair
7.6
Good
1,416 reviews
Check prices

Comfort

7.4

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Crew

8.2

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?

    Delta and United Airlines can get you from Dublin to Illinois in just under 16h 58m. Your travel time can differ by up to 1h 48m. 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: Finnair (71%), American Airlines (68%), Aer Lingus (68%).

  • What are the cheapest flights from Dublin to Illinois?

    Looking at all options, your cheapest flight can be booked for £386. While the most popular route (Dublin - Chicago O'Hare Intl) can be booked for £477 on average, our data indicates £947 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 £402). Flying from Dublin to Illinois in July is currently the most expensive (average of £621). 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
IcelandairCheapest£310Average£474FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£387Average£537FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
JetBlueCheapest£450Average£467FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£456Average£660FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£520Average£649FlexibilityNo cancel feeOn-time69%
Search United Airlines 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.

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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