DUB - ORD

$428 Find Cheap Flights from Dublin to Chicago - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$515
Typical prices: $613-$851
Icelandair
Mon 12/3Sun 12/9
DUB - ORD • 1 stop
Cheapest non-stop
$639
Typical prices: $624-$861
Aer Lingus
Sun 11/11Tue 11/13
DUB - ORD • Non-stop
Advice from real travelers
Dublin U.S. Pre-clearance saves time on arrival; allow about 2–3 hours before departure.
American Main Cabin Extra adds early boarding and complimentary drinks on this long-haul route.
Expert advice
+1
Expert advice
+1
Nonstop flights
You can fly direct with Aer Lingus and United Airlines. Average duration is 8h 37m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 93% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 20 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $540 (round-trip)
Shortest trip • 10h 43m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chicago O'Hare Intl Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Dublin to O'Hare Intl (DUB-ORD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dublin to O'Hare Intl

Thu, Dec 3 - Wed, Dec 9
Icelandair Logo
11:30 am - 5:20 pmDUB  Dublin-ORD Chicago O'Hare Intl
11h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
6:30 pm - 10:15 amORD  Chicago O'Hare Intl-DUB Dublin
9h 45m1 stop Reykjavik Keflavik Intl
$515Icelandair
Thu, Dec 10 - Mon, Dec 14
Icelandair Logo
11:30 am - 5:20 pmDUB  Dublin-ORD Chicago O'Hare Intl
11h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
6:30 pm - 10:15 amORD  Chicago O'Hare Intl-DUB Dublin
9h 45m1 stop Reykjavik Keflavik Intl
$538Icelandair
Fri, Dec 11 - Mon, Dec 14
Icelandair Logo
11:30 am - 5:20 pmDUB  Dublin-ORD Chicago O'Hare Intl
11h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
6:30 pm - 10:15 amORD  Chicago O'Hare Intl-DUB Dublin
9h 45m1 stop Reykjavik Keflavik Intl
$538Icelandair
Thu, Dec 3 - Mon, Dec 7
Icelandair Logo
11:30 am - 5:20 pmDUB  Dublin-ORD Chicago O'Hare Intl
11h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
6:30 pm - 10:15 amORD  Chicago O'Hare Intl-DUB Dublin
9h 45m1 stop Reykjavik Keflavik Intl
$551Icelandair
Wed, Nov 11 - Fri, Nov 13
Aer Lingus Logo
3:50 pm - 6:20 pmDUB  Dublin-ORD Chicago O'Hare Intl
8h 30mnonstop
Aer Lingus Logo
8:05 pm - 9:30 amORD  Chicago O'Hare Intl-DUB Dublin
7h 25mnonstop
$639Aer Lingus
Tue, Nov 10 - Fri, Nov 13
Aer Lingus Logo
3:50 pm - 6:20 pmDUB  Dublin-ORD Chicago O'Hare Intl
8h 30mnonstop
Aer Lingus Logo
3:55 pm - 5:15 amORD  Chicago O'Hare Intl-DUB Dublin
7h 20mnonstop
$641Aer Lingus
Sun, Dec 20 - Wed, Dec 30
Aer Lingus Logo
11:30 am - 2:10 pmDUB  Dublin-ORD Chicago O'Hare Intl
8h 40mnonstop
Aer Lingus Logo
3:55 pm - 5:15 amORD  Chicago O'Hare Intl-DUB Dublin
7h 20mnonstop
$653Aer Lingus
Sat, Nov 14 - Mon, Nov 16
United Airlines Logo
9:00 am - 4:44 pmDUB  Dublin-ORD Chicago O'Hare Intl
13h 44m1 stop Toronto Pearson Intl
United Airlines Logo
3:36 pm - 7:30 amORD  Chicago O'Hare Intl-DUB Dublin
9h 54m1 stop Newark
$667United Airlines
Mon, Nov 9 - Tue, Nov 17
United Airlines Logo
9:00 am - 3:38 pmDUB  Dublin-ORD Chicago O'Hare Intl
12h 38m1 stop Toronto Pearson Intl
United Airlines Logo
12:59 pm - 7:30 amORD  Chicago O'Hare Intl-DUB Dublin
12h 31m1 stop Newark
$667United Airlines
Mon, Nov 9 - Sun, Nov 15
United Airlines Logo
9:00 am - 3:38 pmDUB  Dublin-ORD Chicago O'Hare Intl
12h 38m1 stop Toronto Pearson Intl
United Airlines Logo
1:30 pm - 10:20 amORD  Chicago O'Hare Intl-DUB Dublin
14h 50m1 stop Washington, D.C. Dulles Intl
$667United Airlines
Booking Insights

Price, demand and travel trends for Dublin to Chicago O'Hare Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Dublin to Chicago O'Hare Intl Airport?

Round-trip flights from Dublin to Chicago O'Hare Intl Airport typically range from $613 to $851. The lowest price found in the past 5 days was $515, on Icelandair.

What's the cheapest day of the week to fly from Dublin to Chicago O'Hare Intl Airport?

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from Dublin to Chicago O'Hare Intl Airport. It’s 4% cheaper than the average day, while Saturday is the most expensive, with prices 4% higher.

What’s the cheapest month to fly from Dublin to Chicago O'Hare Intl Airport?

•November is the cheapest month to fly from Dublin to Chicago O'Hare Intl Airport at $543 round-trip.
•August ($872) and July ($835) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 60% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Dublin to Chicago O'Hare Intl Airport the cheapest?

Flights from Dublin to Chicago O'Hare Intl Airport are cheapest 20 weeks before departure. Booking in this window typically costs about 23% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Dublin to O'Hare Intl

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Marisa Garcia

Marisa Garcia

Expert on Aer Lingus

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and ORD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Ramsey Qubein

Ramsey Qubein

Expert on DUB

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Key details for Dublin to Chicago O'Hare Intl Airport flights

Low season

February

Cheapest flight

$428
Beat the crowds with an average 37% drop in travelers.
The most popular month to fly with an average 43% increase in travelers.
One-way flight from Dublin to Chicago O'Hare Intl Airport

When to book flights from Dublin to O'Hare Intl

Are your dates flexible? Find out the best times to travel from Dublin to O'Hare Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Dublin to O'Hare Intl: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Dublin to O'Hare Intl 
Verified travelerFlew with Aer Lingus-Sep 2026
Get there early enough to be able to relax and shop a bit
JohannaFlew with Aer Lingus-Feb 2026
Are Ling’s was great, and boards from the back of the plane, which made boarding way less chaotic and much quicker.
Verified travelerFlew with Iberia-Sep 2024
Taking the coach bus to Dublin from Castlebar to departures was affordable and easy.
ConnerFlew with Aer Lingus-Sep 2024
You need almost 2 hours to be sure you will clear US pre clearance
Verified travelerFlew with Lufthansa-Aug 2024
Give yourself enough time to go through US Customs in Dublin.

Your Dublin to Chicago O'Hare Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Dublin to Chicago O'Hare Intl Airport?

    These are the earliest and latest flight times available from Dublin to Chicago O'Hare Intl Airport:

    • Earliest: departs at 10:40 am and lands at 7:17 pm
    • Latest: departs at 4:40 pm and lands at 1:17 am.

    The flight takes about 8h 37m.

  • What cabin classes can I book on flights from Dublin to Chicago O'Hare Intl Airport?

    Four cabin classes are available on flights from Dublin to Chicago O'Hare Intl Airport:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How long is a flight from Dublin to Chicago O'Hare Intl Airport?

    A nonstop flight from Dublin to Chicago O'Hare Intl Airport takes 8h 37m, covering 3,661 miles.

  • Do I need a passport to fly from Dublin to Chicago O'Hare Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Dublin to Chicago O'Hare Intl Airport flight?

    Round-trip flights from Dublin to Chicago O'Hare Intl Airport range from $613 to $851, with an average of $719 over the past 12 months. Anything below $613 counts as a good deal.

  • How expensive are last-minute Dublin to Chicago O'Hare Intl Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 10% above the $719 route average. Book 20 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Dublin to Chicago O'Hare Intl Airport?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $540 round-trip via Kastrup Copenhagen (CPH), compared to $734 for nonstop.

  • How does on-time performance compare across airlines flying from Dublin to Chicago O'Hare Intl Airport?

    Aer Lingus is slightly above the route average for timely arrivals, while American Airlines has a lower on-time arrival rate. On-time arrival rates on Dublin to Chicago O'Hare Intl Airport flights are:

    • Aer Lingus: 93% on time
    • American Airlines: 87% on time
    • United Airlines: 86% on time

    Overall, flights on this route are punctual 90% of the time on average.

  • What is the standard checked-bag allowance on flights from Dublin to Chicago O'Hare Intl Airport?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $27–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Dublin to Chicago O'Hare Intl Airport?

    The Airbus A330-300 family is used most often on this route, operated mainly by Aer Lingus and Iberia. Other aircraft seen on the route include Boeing 767-300 variants.

  • How are flight departures from Dublin to Chicago O'Hare Intl Airport spread across the day?

    Morning is the busiest departure period on Dublin to Chicago O'Hare Intl Airport flights, with 67% of flights leaving in that window. Afternoon departures account for 33%, evening flights for 0%, and night flights for 0%.

  • Which airlines offer Wi-Fi on Dublin to Chicago O'Hare Intl Airport flights?

    American Airlines is the only airline on the Dublin to Chicago O'Hare Intl Airport route offering in-flight Wi-Fi. Pricing depends on fare class.

  • How are flight prices from Dublin to Chicago O'Hare Intl Airport looking right now?

    One-way fares from Dublin to Chicago O'Hare Intl Airport are currently higher than usual. Average one-way flight prices are about $643, which is 6% above the typical average for this route.

  • What car rental options are available at Chicago O'Hare Intl Airport (ORD)?

    Chicago O'Hare Intl Airport (ORD) hosts 5 major car rental companies, with daily rates averaging $64 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • Europcar
    • Hertz
    • Ace
    • Dollar

  • Which airports can I use when flying from Dublin to Chicago O'Hare Intl Airport?

    Flights from Dublin to Chicago O'Hare Intl Airport usually depart from Dublin (DUB) and arrive at Chicago O'Hare Intl (ORD).

  • What time of day has the fewest delays on flights from Dublin to Chicago O'Hare Intl Airport?

    Afternoon flights have the fewest delays on this route, while morning departures tend to have the most.

  • At what point is a flight considered delayed from Dublin to Chicago O'Hare Intl Airport?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Dublin to Chicago O'Hare Intl Airport route, 10% of flights were delayed in the past 3 months, with delays averaging 3h 12m.

  • Which airports do connecting flights from Dublin to Chicago O'Hare Intl Airport pass through?

    One-stop flights from Dublin to Chicago O'Hare Intl Airport most commonly connect through:

    • Reykjavik Keflavik Intl (KEF) - 60% of one-stop connections
    • London Heathrow (LHR) - 17% of one-stop connections
    • Boston Logan Intl (BOS) - 6% of one-stop connections
    • Kastrup Copenhagen (CPH) - 5% of one-stop connections

  • Can I save money by using flexible dates for flights from Dublin to Chicago O'Hare Intl Airport?

    Yes. Flexible dates can save you up to 8% on flights from Dublin to Chicago O'Hare Intl Airport. Thursday is the cheapest departure day at $695 round-trip on average, while Saturday is the most expensive at $750, a difference of $55.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Dublin to Chicago O'Hare Intl Airport?

    2 airlines operate flights between Dublin and Chicago O'Hare Intl Airport. The airlines offering nonstop flights on this route include:

    • Aer Lingus
    • United Airlines

  • How much time can I save by choosing a different layover airport from Dublin to Chicago O'Hare Intl Airport?

    Flying via Washington, D.C. Dulles Intl (IAD) gives the shortest average 1-stop total travel time at 10h 43m, compared with 10h 59m via Reykjavik Keflavik Intl (KEF) and 11h 04m via Philadelphia (PHL).

  • What is the time difference between Dublin and Chicago O'Hare Intl Airport?

    Chicago O'Hare Intl Airport is 5 hours behind Dublin (Central Time vs Irish Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Chicago O'Hare Intl Airport?

    Some of the most popular sights in Chicago O'Hare Intl Airport are Magnificent Mile, Grant Park and Soldier Field. These are among the most viewed places in Chicago O'Hare Intl Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Dublin to Chicago O'Hare Intl Airport flights?

    Among airlines operating Dublin to Chicago O'Hare Intl Airport flights:

    • Aer Lingus: offers extra legroom; offers free seat selection
    • United Airlines: offers extra legroom; offers free seat selection
    • American Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Dublin to Chicago O'Hare Intl Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Aer Lingus: a cabin bag and a checked bag in Economy Class
    • United Airlines: a cabin bag and a checked bag in Economy Class
    • Lufthansa: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

  • Which airlines fly directly to Chicago from Dublin International Airport (DUB)?

    If you are flying with Aer Lingus, then you can book a nonstop trip from Dublin to Chicago O’Hare International Airport. If you are flying with KLM, you can expect one layover in Amsterdam (AMS), and if you are flying with British Airways, you can expect a layover in London’s Heathrow (LHR).

  • Where can I charge my phone once I land in Chicago O'Hare International Airport?

    As you arrive at the airport, once you have collected your baggage but before you are processed by customs, you will see a charging station near gate m13. Make sure you have an adaptor, there should be plenty on sale at either the duty-free in Dublin or the one in O’Hare when you arrive.

  • Where can I get something to eat at O’Hare International Airport?

    Most international arrivals terminals have one or two restaurants as you arrive, however Chicago O'Hare Interanational Airport (ORD) offers a choice of several restaurants; from Chinese fusion to classic fast-food, you will have a variety of choices to get your first meal from when you arrive in O'Hare's terminal five.

Your guide to booking Dublin to Chicago O'Hare Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure and avoid flying on Saturday. On this route, Thursday flights average $695, about $55 less than Saturday fares (7% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 20 weeks before you fly. On this route, that window historically saves about 23% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Dublin to Chicago O'Hare Intl Airport trip for November. Fares historically average $543 round-trip in that month - typically $329 less than the most expensive month, which is August (based on the last 12 months).
  • For the best chance of arriving on time, fly with Aer Lingus. Over the past three months, 93% of Aer Lingus flights from Dublin to Chicago O'Hare Intl Airport arrived on time, slightly above the route average of 90%. When flights on this route arrive late, they're delayed by an average of 3h 12m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Kastrup Copenhagen Airport (CPH) can be cheaper than flying direct. The cheapest layover option averages $540 round-trip on this route - about $193 less than direct flights (based on the last 12 months).
  • If you’re wanting to get straight to the centre of the city from Chicago O'Hare International Airport (ORD), then a good idea would be to take Chicago’s blue line subway, travellers from the airport get a discount from the airport as well. The subway trip should cost around $5 (€4).
  • If you're wanting to get to the terminal from the car park easily and want ease of access when you come back to Dublin International Airport (DUB), you can use the Platinum Service that is available at Dublin International. The Platinum Service offers a range of features like Fastrack and access to airport lounges. It also offers you private parking spaces at the airport. The lowest price comes in at around €255 for a full package, with parking costing around €40 a day.
  • If you are travelling with small children, Chicago O'Hare International Airport should have prams available for rent. The airport will not charge you for use of the prams if you are able to produce either a boarding pass or another form of verification that you are an airport customer.

Prefer to fly direct from Dublin to Chicago?

 
Find which airlines fly direct from Dublin Airport to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

Dublin to Chicago O'Hare Intl

Monday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Tuesday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Wednesday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Thursday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Friday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Saturday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Sunday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

See more direct flights

Direct returns

Chicago O'Hare Intl to Dublin

Monday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Tuesday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Wednesday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Thursday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Friday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Saturday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Sunday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

See more direct flights

More options for your flight from Dublin to O'Hare Intl

Complete your trip to Chicago with a hotel stay or car rental