340 € Return - Cheap Flights to Chicago

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Find the cheapest month or even day of the year to fly to Chicago

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Flight deals to Chicago

Looking for a cheap last-minute deal or the best return flight to Chicago? Find the biggest savings on one-way and return tickets right here.

Find the cheapest time to fly to Chicago

Flexible on travel dates? Find the cheapest month – or even day – to fly to Chicago.

Airports in Chicago

Compare routes to Chicago below. You may find an airport to fly into that's cheaper, faster, or easier.

Direct flights to Chicago

Frequently asked questions

The average flight time to Chicago is 8 hours and 31 minutes. We've calculated this based on journeys from Dublin.
There are 4 airports in Chicago: Chicago Midway, Chicago O'Hare International, Chicago Dupage County, and Chicago Rockford.
Aer Lingus, American Airlines, Iberia, British Airways, United, Air Canada, Lufthansa and Brussels Airlines all fly direct to Chicago.
The cheapest month to fly to Chicago is usually April.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
Yes – you can fly direct to Chicago O'Hare International Airport and the average flight time is 8 hours and 25 minutes.
The best price we found for a return flight to Chicago is 340 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
The cheapest airport near Chicago is Chicago O'Hare International – which is 25.4 km away from the centre of Chicago. We've found flights into this airport from 340 €.
After crunching the numbers on our flight calendar, we found that the cheapest date to fly to Chicago is Friday, 24 April 2026.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.
The average temperature in Chicago in October is around 11°C. The warmest month in Chicago is typically July, which averages 26°C. The coolest month is January, with temperatures averaging -8°C. The rainiest month is August, and it usually rains the least in January.
Currently, TAP Air Portugal and Lufthansa offer the cheapest flight tickets to Chicago.

Flying to Chicago

The things to know before you go.
Cheapest flight found340 €
Cheapest month to flyApril
Average flight time8 hrs, 26 mins
Most popular airlineAer Lingus
Average flights per week756

Discover Chicago

How to find cheap flights to Chicago

  • 243 € is the lowest price for a one-way flight to Chicago. Or you can book a round-trip ticket for 340 €.

  • Have the best deals come straight to you by creating a Price Alert. You'll get an email or a push notification on the app when ticket prices drop.

  • Book sooner rather than later. You might even be able to score some amazing early bird deals on your flight.

  • Select 'Add nearby airports' when searching to increase your chances of securing cheap flights to Chicago. Doing this will give you more choices for where to start and end your trip, as well as different fares.

  • Indirect routes can often save you money, so consider taking a flight with a stop. Simply uncheck the 'Direct flights' box when searching for your plane tickets.

Best time to go to Chicago

  • Make use of the 'Whole month' tool if you're flexible with your dates. Browse fares for the entire month and find a flight that fits your plans and budget.

  • August sees the highest demand for flights. The city is generally at its peak, making it an ideal time to visit.

  • Visit in February if you're looking for a more relaxed experience. This is the least busy month and also when plane tickets to Chicago are often more affordable.

  • Check the weather before you head off. July is the warmest time of year in Chicago, with averages between 15ºC (59ºF) and 29ºC (84ºF).

  • January is when temperatures are at their coolest, between -12ºC (10ºF) and 3ºC (37ºF).

  • Hoping to leave the raincoat at home? November is the driest month in Chicago, averaging five days of rain.

  • Expect the heaviest showers during May, which gets around ten days of wet weather.

Flying to Chicago: what you need to know

  • Explore the options for flying into O'Hare International Airport (ORD) or Chicago Midway International Airport (MDW) when organising your Chicago flight. Chicago Rockford International Airport (RFD) is another choice.

  • Most flights arriving in the city land at O'Hare International Airport (ORD).

  • Offering direct flights to Chicago, these leading airlines make reaching your destination easy:

  • Chicago operates on the UTC-5 timezone.

  • After you've booked your ticket, find the perfect place to call your own while you're away. Here's a roundup of comfy hotels to put on your short list:

Getting to central Chicago from O'Hare International Airport (ORD)

Chicago highlights

  • Put these major attractions on your to-do list after stepping off your flight to Chicago:

    • Millennium Park: Around 0.80 kilometres northeast of the centre in Loop, this landmark is the perfect opening act for your trip.

    • Wicker Park Farmers Market: Put some of your travel budget to good use here while exploring Chicago. This shopping area is roughly 5 kilometres northwest of the centre in West Town.

    • Willis Tower: Want more reasons to visit Chicago? This landmark attracts travellers from all over and is around 0.48 kilometres west of the city centre in Loop.

Explore more of the United States

  • Up for more adventures? Indianapolis will keep things interesting on your trip through the United States. It's around 274 kilometres southeast of Chicago and features Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis. The closest airport to this city is Indianapolis International Airport (IND).

  • Milwaukee makes a great addition to your trip to the United States. You'll find it roughly 129 kilometres north of Chicago. Richards Duplex Apartments by Frank Lloyd Wright, Miller Park and Discovery World are major draws. You can arrive here through General Mitchell International Airport (MKE).

  • Say yes to more adventures in Fort Wayne. Roughly 225 kilometres east of Chicago, African-American Historical Museum, Salomon Farm Park and Science Central are reason enough to go.

Complete your trip with a Chicago car hire

  • Rent a car in the city and drive off when you're ready. Browse the range of car rentals in Chicago and discover all top deals with one simple search. You can also compare rental cars on everything from included mileage to flexible bookings and provider rating.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.