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Cheap flights from Dublin to Illinois from £304

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 17/2. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
21 Feb — 28 Feb1
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 22 January 2026.

Wed 13/509:30
DUB
-
ORD
Nonstop8h 00m
Finnair
Tue 26/522:25
ORD
-
DUB
Nonstop7h 25m
Finnair
Deal found 20/1£325
Tue 5/508:35
DUB
-
ORD
1 stop15h 00m
Multiple Airlines
Thu 14/522:25
ORD
-
DUB
Nonstop7h 25m
Multiple Airlines
Deal found 20/1£331
Fri 17/409:30
DUB
-
ORD
1 stop16h 25m
Multiple Airlines
Tue 21/417:00
ORD
-
DUB
1 stop10h 40m
Multiple Airlines
Deal found 21/1£334
Mon 16/320:40
DUB
-
ORD
1 stop24h 45m
Multiple Airlines
Tue 24/321:35
ORD
-
DUB
1 stop11h 45m
Multiple Airlines
Deal found 20/1£339
Tue 31/310:30
DUB
-
ORD
1 stop13h 05m
Multiple Airlines
Tue 7/422:35
ORD
-
DUB
1 stop14h 15m
Multiple Airlines
Deal found 20/1£343
Wed 13/508:35
DUB
-
ORD
1 stop12h 20m
Multiple Airlines
Tue 26/521:15
ORD
-
DUB
1 stop11h 20m
Multiple Airlines
Deal found 21/1£345
Thu 23/409:30
DUB
-
ORD
1 stop16h 25m
Finnair
Mon 27/412:30
ORD
-
DUB
1 stop15h 15m
Finnair
Deal found 20/1£348
Wed 22/409:30
DUB
-
ORD
1 stop16h 25m
Finnair
Sun 26/412:30
ORD
-
DUB
1 stop15h 15m
Finnair
Deal found 20/1£349
Tue 3/205:55
DUB
-
MDW
2 stops18h 00m
Delta
Sun 8/213:26
MDW
-
DUB
2 stops20h 19m
Delta
Deal found 20/1£389
Sun 1/205:55
DUB
-
MDW
2 stops18h 41m
Delta
Mon 9/210:46
MDW
-
DUB
2 stops15h 59m
Delta
Deal found 20/1£392
Thu 29/105:55
DUB
-
MDW
2 stops18h 00m
Delta
Wed 4/206:00
MDW
-
DUB
2 stops20h 45m
Delta
Deal found 20/1£398
Sun 22/209:45
DUB
-
MDW
1 stop18h 46m
Delta
Wed 4/310:49
MDW
-
DUB
2 stops15h 56m
Delta
Deal found 20/1£398

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 22 January 2026.

Round-trip from

£325

One-way from

£304

Popular in

July

Cheapest in

November

Average price

£439

Good round-trip deal

£464 or less

Good one-way deal

£257 or less
Finnair
  • Finnair
  • 13/5-26/5
  • Nonstop
  • 15h 25m total
  • Dublin to Illinois
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 17/2
  • 1 total stop
  • 28h 05m total
  • Dublin to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£50 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 22 January 2026.
Use the filters below to find and compare flights from Dublin to Illinois that are best for you.

Fly from

Dublin

Fly to

Illinois

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 22/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Tue 2/6

22:25-11:50

Nonstop7h 25m

£325

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 13/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Tue 26/5

22:25-11:50

Nonstop7h 25m

£328

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 13/5

08:35-14:55

1 stop12h 20m

Chicago O'Hare Intl

Tue 26/5

22:25-11:50

Nonstop7h 25m

£334

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/4

09:30-19:55

1 stop16h 25m

Chicago O'Hare Intl

Mon 13/4

17:00-09:40

1 stop10h 40m

£334

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 5/5

08:35-15:00

1 stop12h 25m

Chicago O'Hare Intl

Thu 14/5

22:25-11:50

Nonstop7h 25m

£334

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 17/4

09:30-19:55

1 stop16h 25m

Chicago O'Hare Intl

Tue 21/4

17:00-09:40

1 stop10h 40m

£334

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 16/3

20:40-16:25

1 stop24h 45m

Chicago O'Hare Intl

Tue 24/3

18:10-09:35

1 stop10h 25m

£342

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 31/3

10:30-17:35

1 stop13h 05m

Chicago O'Hare Intl

Tue 7/4

22:35-18:50

1 stop14h 15m

£343

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 22/4

09:30-19:55

1 stop16h 25m

Chicago O'Hare Intl

Sun 26/4

12:30-09:45

1 stop15h 15m

£349

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 5/2

05:55-17:55

2 stops18h 00m

Chicago Midway

Tue 10/2

18:35-15:45

2 stops15h 10m

£389

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 33 results
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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, March is the cheapest month in which you can book a flight from Dublin to Illinois (average of £298). Flying from Dublin to Illinois in July is currently the most expensive (average of £474). 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 22 January 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 22 January 2026.

The most flights from DUB to USIL are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

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

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 22 January 2026.
Read through reviews of airlines operating flights from Dublin to Illinois, such as United Airlines, Aer Lingus, andBrussels Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,189 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,189 reviews
United Airlines
7.4
Good
9,189 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,439 reviews
United Airlines
7.4
Good
9,189 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Brussels Airlines
7.2
Good
382 reviews
United Airlines
7.4
Good
9,189 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
602 reviews
United Airlines
7.4
Good
9,189 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,691 reviews
United Airlines
7.4
Good
9,189 reviews
Check prices

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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?

    Finnair and Delta can get you from Dublin to Illinois in just under 8h. Your travel time can differ by up to 10h. 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: Air Canada (84%), Austrian Airlines (83%), Brussels Airlines (83%).

  • What are the cheapest flights from Dublin to Illinois?

    Looking at all options, your cheapest flight can be booked for £256. While the most popular route (Dublin - Chicago O'Hare Intl) can be booked for £443 on average, our data indicates £902 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, March is the cheapest month in which you can book a flight from Dublin to Illinois (average of £298). Flying from Dublin to Illinois in July is currently the most expensive (average of £474). 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

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Alternative routes for Dublin to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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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 22 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£241Average£339FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£299Average£419FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£315Average£446FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£346Average£488FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£354Average£625FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£453Average£504FlexibilityNo cancel feeOn-time71%
Search American Airlines 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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