Question 1

What are the cheapest airlines to fly from Ireland to Chicago O'Hare Intl Airport one-way?

Accepted Answer

For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as £312. Users have also found prices from £411 and £424 on JetBlue and Finnair, respectively.

Question 2

What is the cheapest month to book a flight from Ireland to Chicago O'Hare Intl Airport?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £595). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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.

Question 3

What is the cheapest day to fly from Ireland to Chicago O'Hare Intl Airport?

Accepted Answer

Travellers seeking maximum savings on their Ireland to Chicago O'Hare Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Question 4

Weekly flight availability from Ireland to Chicago O'Hare Intl Airport

Accepted Answer

The most flights from IE0 to ORD are scheduled on a Monday (18 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).

Question 5

E

Accepted Answer

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

Question 6

E

Accepted Answer

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Question 7

What are the cheapest flights from Ireland to Chicago O'Hare Intl Airport?

Accepted Answer

On average you can expect to pay £961 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £336 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £499.

Question 8

What are the most reliable airlines from Ireland to Chicago O'Hare Intl Airport?

Accepted Answer

Consider SWISS (83%), Air Canada (77%) or Austrian Airlines (77%) when booking your flight. These represent the most reliable airlines when flying from Ireland to Chicago O'Hare Intl Airport.

Question 9

What are the most popular airlines that fly from Ireland to Chicago O'Hare Intl Airport?

Accepted Answer

Before booking your flight from Ireland to Chicago O'Hare Intl Airport check out the most popular airlines for this route: Finnair, British Airways or Aer Lingus.

Question 10

What is the cheapest day to fly round-trip from Ireland to Chicago O'Hare Intl Airport?

Accepted Answer

Users have found that flying from Ireland to Chicago O'Hare Intl Airport on a Friday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

Question 11

How far in advance should I book a flight from Ireland to Chicago O'Hare Intl Airport?

Accepted Answer

Users have found that booking a flight from Ireland to Chicago O'Hare Intl Airport at least 56 days early can save you up to 23% on average compared to booking a flight this week. If booking 56 days before your flight isn’t an option for you, users have found flights from Ireland to Chicago O'Hare Intl Airport for as little as £377 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £429 for flights departing within the next 3 days.

Question 12

What is the cheapest month to fly from Ireland to Chicago O'Hare Intl Airport?

Accepted Answer

Flights from Ireland to Chicago O'Hare Intl Airport lean towards being more expensive in July. Prices are generally better when you fly from Ireland to Chicago O'Hare Intl Airport in November, with the cheapest ticket starting at £247.

Question 13

What is the cheapest time of day to fly from IE to ORD?

Accepted Answer

Unlike at midday, when flights are generally more expensive, you can save up to 5% on flights from Ireland to Chicago O'Hare Intl Airport by exploring options for tickets in the afternoon.

Question 14

Can I find deals for flights from Ireland to O'Hare Intl that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Ireland to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 15

How can I find direct flights from Ireland to O'Hare Intl?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to O'Hare Intl.

Question 16

Can I find deals for business class flights from Ireland to O'Hare Intl?

Accepted Answer

Yes. Cheapflights offers flight deals from Ireland to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 17

How does Cheapflights help users find flights from Ireland to O'Hare Intl?

Accepted Answer

When you search for this flight from Ireland to O'Hare Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 18

Why should you use Cheapflights to find cheap flight tickets from Ireland to O'Hare Intl?

Accepted Answer

Cheapflights simply makes it quick and affordable to book flights from Ireland to O'Hare Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Question 19

Can Cheapflights find flights from Ireland to O'Hare Intl with no change fees?

Accepted Answer

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ireland to O'Hare Intl, users can toggle the no change fees filter when performing a flight search.

Question 20

Can Cheapflights notify me if prices for flights from Ireland to O'Hare Intl become cheaper?

Accepted Answer

Yes! Start tracking prices for Ireland to O'Hare Intl 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.

Round-trip from	£381
One-way from	£312
Popular in	July
Cheapest in	November
Average price	£537
Good round-trip deal	£458 or less
Good one-way deal	£569 or less

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£253	Average£352	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
British Airways	Cheapest£282	Average£496	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£285	Average£517	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£301	Average£435	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Finnair	Cheapest£360	Average£537	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£369	Average£542	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

Cheap flights from Ireland to Chicago O'Hare Intl Airport from £312

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ireland to O'Hare Intl

Keep the following information in mind while searching for Ireland to O'Hare Intl flight deals. Data was last updated 1 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Ireland to O'Hare Intl

Cheapest flights from Ireland to O'Hare IntlExplore the most affordable flight options available from Ireland to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.

Explore the most affordable flight options available from Ireland to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ireland to Chicago O'Hare Intl Airport that are best for you.

Best time to book a flight from Ireland to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Ireland with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ireland to Chicago O'Hare Intl Airport

What is the cheapest month to book a flight from Ireland to Chicago O'Hare Intl Airport?

What is the cheapest time of day to fly from IE to ORD?

Find hourly flight availability from Ireland to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 July 2025.

Weekly flight availability from Ireland to Chicago O'Hare Intl Airport

Explore weekly flight availability from Ireland to O'Hare Intl. 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 1 July 2025.

Reviews of airlines servicing O'Hare Intl

Read reviews from past customers who have flown with Delta, KLM, andFinnair from Ireland to Chicago O'Hare Intl Airport. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ireland to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Ireland to Chicago O'Hare Intl Airport one-way?

What are the most reliable airlines from Ireland to Chicago O'Hare Intl Airport?

What are the cheapest flights from Ireland to Chicago O'Hare Intl Airport?

Can I find deals for flights from Ireland to O'Hare Intl that include hotel bookings?

How can I find direct flights from Ireland to O'Hare Intl?

Can I find deals for business class flights from Ireland to O'Hare Intl?

What is the cheapest month to book a flight from Ireland to Chicago O'Hare Intl Airport?

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Alternative routes for Ireland to O'Hare Intl

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Top 6 airlines flying from Ireland to O'Hare Intl

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How does Cheapflights help users find flights from Ireland to O'Hare Intl?

Why should you use Cheapflights to find cheap flight tickets from Ireland to O'Hare Intl?

Can Cheapflights find flights from Ireland to O'Hare Intl with no change fees?

Can Cheapflights notify me if prices for flights from Ireland to O'Hare Intl become cheaper?

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Cheapest flights from Ireland to O'Hare Intl
Explore the most affordable flight options available from Ireland to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.