Latest deals
Insights
When to book
FAQs
Price Alerts
Look for other cheap flights to Chicago O'Hare Intl

$620 Cheap flights to Chicago O'Hare Intl Airport

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Chicago O'Hare Intl Airport departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Australia to Chicago O'Hare Intl Airport

Cheap return flights

EVA Air Logo
22:15 - 20:45BNE-ORD
37h 30m1 stop
EVA Air Logo
00:30 - 20:00ORD-BNE
28h 30m1 stop
$1,527EVA Air
Find Deal
Thu, 4 Sep - Tue, 16 Sep
EVA Air Logo
22:15 - 20:45BNE-ORD
37h 30m1 stop
EVA Air Logo
00:30 - 20:00ORD-BNE
28h 30m1 stop
$1,535EVA Air
Find Deal
Thu, 4 Sep - Tue, 16 Sep
Air New Zealand Logo
11:50 - 23:14SYD-ORD
26h 24m2 stops
Air New Zealand Logo
16:10 - 10:35ORD-SYD
27h 25m2 stops
$1,671Air New Zealand
Find Deal
Sat, 30 Aug - Sat, 6 Sep
Air Canada Logo
10:20 - 20:11SYD-ORD
25h 51m2 stops
Air Canada Logo
15:45 - 08:20ORD-SYD
24h 35m1 stop
$1,701Air Canada
Find Deal
Wed, 15 Oct - Tue, 21 Oct
American Airlines Logo
09:10 - 16:48SYD-ORD
22h 38m1 stop
American Airlines Logo
15:08 - 07:05ORD-SYD
24h 57m2 stops
$1,734American Airlines
Find Deal
Sat, 30 Aug - Sat, 6 Sep
American Airlines Logo
09:10 - 17:18SYD-ORD
23h 08m2 stops
American Airlines Logo
19:01 - 07:05ORD-SYD
21h 04m1 stop
$1,740American Airlines
Find Deal
Fri, 5 Sep - Thu, 18 Sep
United Airlines Logo
11:30 - 19:30MEL-ORD
25h 00m1 stop
United Airlines Logo
16:40 - 09:30ORD-MEL
23h 50m1 stop
$1,750United Airlines
Find Deal
Fri, 14 Nov - Fri, 28 Nov
Air New Zealand Logo
11:50 - 22:41SYD-ORD
25h 51m2 stops
Air New Zealand Logo
16:10 - 08:45ORD-SYD
25h 35m2 stops
$1,756Air New Zealand
Find Deal
Wed, 27 Aug - Sat, 30 Aug
United Airlines Logo
10:55 - 22:42MEL-ORD
26h 47m2 stops
United Airlines Logo
18:00 - 08:30ORD-MEL
22h 30m1 stop
$1,757United Airlines
Find Deal
Sun, 14 Sep - Fri, 31 Oct
Air Canada Logo
10:20 - 20:11SYD-ORD
25h 51m2 stops
Air Canada Logo
10:40 - 08:20ORD-SYD
29h 40m3 stops
$1,948Air Canada
Find Deal
Wed, 15 Oct - Tue, 21 Oct

momondo Fare Finder

 
Locate flights to Chicago O'Hare Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 78,305 searches and data was last updated on 15 August 2025.
Use the filters below to find and compare flights to Chicago O'Hare Intl Airport that are best for you.

Fly from

Route

Depart

Return

Price

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 4/9

22:15-20:45

1 stop37h 30m

Chicago O'Hare Intl

Tue 16/9

00:30-20:00

1 stop28h 30m

$1,527

BrisbaneChicago

BNE - ORD

BNEORD

Brisbane

Thu 4/9

22:15-20:45

1 stop37h 30m

Chicago O'Hare Intl

Tue 16/9

00:30-20:00

1 stop28h 30m

$1,535

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 30/8

11:50-23:14

2 stops26h 24m

Chicago O'Hare Intl

Sat 6/9

16:10-10:35

2 stops27h 25m

$1,671

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 15/10

10:20-20:11

2 stops25h 51m

Chicago O'Hare Intl

Tue 21/10

15:45-08:20

1 stop24h 35m

$1,701

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Sat 30/8

09:10-16:48

1 stop22h 38m

Chicago O'Hare Intl

Sat 6/9

15:08-07:05

2 stops24h 57m

$1,734

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Fri 5/9

09:10-17:18

2 stops23h 08m

Chicago O'Hare Intl

Thu 18/9

19:01-07:05

1 stop21h 04m

$1,740

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Fri 14/11

11:30-19:30

1 stop25h 00m

Chicago O'Hare Intl

Fri 28/11

16:40-09:30

1 stop23h 50m

$1,750

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 27/8

11:50-22:41

2 stops25h 51m

Chicago O'Hare Intl

Sat 30/8

16:10-08:45

2 stops25h 35m

$1,756

MelbourneChicago

MEL - ORD

MELORD

Melbourne

Sun 14/9

10:55-22:42

2 stops26h 47m

Chicago O'Hare Intl

Fri 31/10

18:00-08:30

1 stop22h 30m

$1,757

SydneyChicago

SYD - ORD

SYDORD

Sydney Kingsford Smith

Wed 15/10

10:20-20:11

2 stops25h 51m

Chicago O'Hare Intl

Tue 21/10

10:40-08:20

3 stops29h 40m

$1,948

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Chicago O'Hare Intl Airport from

Flights to Chicago O'Hare Intl Airport – Travel Insights & Trends

Get data-powered insights and trends for flights to Chicago O'Hare Intl Airport to help you craft the best travel plan.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart from Australia to Chicago O'Hare Intl Airport is on a Monday. Travellers who choose to depart for Chicago O'Hare Intl Airport on a Monday will often find tickets for as low as $1,861. The most expensive day to fly to Chicago O'Hare Intl Airport is Sunday, with ticket prices averaging around $2,266.

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

The month of February is, on average, the cheapest month to fly to Chicago O'Hare Intl Airport from Australia, with most prices found around $1,101. If you are unable to visit Chicago O'Hare Intl Airport during the month of February, then departing from Australia during the month May is also very affordable. Most momondo users find prices during this month for around $1,144.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Our data shows that the cheapest Australia to Chicago O'Hare Intl Airport flights are usually those with departure times in the afternoon. Our users have found flights to Chicago O'Hare Intl Airport in the afternoon for as low as $1,768. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is in the morning when prices are around $2,005.

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

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $1,567 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Australia for as low as $1,190 on momondo.

Cheapest flights to Chicago O'Hare Intl

Find the cheapest flights to Chicago O'Hare Intl from your nearest city or airport
Find flights from Sydney to Chicago O'Hare Intl Airport
CHEAPEST MONTH TO FLY TO CHICAGO O'HARE INTL AIRPORT FROM SYDNEYFebruary30% cheaperFlying from Sydney to Chicago O'Hare Intl Airport costs on average just $1,101 in February
MOST EXPENSIVE MONTH TO FLY TO CHICAGO O'HARE INTL AIRPORT FROM SYDNEYDecember68% more expensiveIt costs about $2,636 for flights to Chicago O'Hare Intl Airport from Sydney in December
MOST POPULAR MONTH TO FLY TO CHICAGO O'HARE INTL AIRPORT FROM SYDNEYJuly250% more users visitedMore momondo users searched in flights to Chicago O'Hare Intl Airport from Sydney in July than any other month

Cheap Chicago O'Hare Intl Airport flight deals and tips

Summary info about Chicago O'Hare Intl Airport flight prices, duration and airlines

Best One-Way Price

$620

Best Round-Trip Price

$1,527

Fastest flight time

23h 17m

Popular in

September
The best one-way flight price to Chicago from Australia in the last 72 hours is $620 (Sydney Kingsford Smith to Chicago O'Hare Intl).
Search Deals
The best round-trip flight price to Chicago from Australia in the last 72 hours is $1,527 (Brisbane to Chicago O'Hare Intl).
Search Deals
The fastest flight to Chicago from Australia takes 23h 17m (Sydney Kingsford Smith to Chicago O'Hare Intl).
Search Deals
September has the highest demand for flights to Chicago, with a 11% price increase on average.
Search Deals

Frequently asked questions about flying to Chicago O'Hare Intl Airport

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

In general, when looking for the cheapest flight to Chicago O'Hare Intl Airport, try to choose a flight departing in February for the best deal.

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

In general, most flyers find the cheapest time to book a flight to Chicago O'Hare Intl Airport is about 78 days prior.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

Most of our users find that booking their departure to Chicago O'Hare Intl Airport on a Monday is the cheapest. Conversely, departing on a Sunday seems to be the most expensive.

What is the cheapest time of day to fly to Chicago O'Hare Intl Airport?

In general, when looking for the cheapest flight to Chicago O'Hare Intl Airport, our data indicates that Afternoon flights are the most cost-effective. Morning flights tend to be the most expensive.

Is there an alternative airport near Chicago O'Hare Intl Airport?

Those flying to Chicago O'Hare Intl Airport could potentially find better pricing at Chicago Midway Airport (14 km from Chicago city centre) or Chicago Greater Rockford Airport (126 km from Chicago city centre) depending on the month and departure airport.

Is there a cheaper alternative to flying into Chicago?

Prices vary based on where travellers are departing from, but on average, the cheapest airport to fly to in Chicago is Chicago Greater Rockford Airport where the average price is $146. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.

What is the absolute cheapest flight to Chicago?

$137 is the cheapest deal found on momondo in the last two weeks for a flight to Chicago. This flight is from Toronto and is 35% cheaper than most flights to Chicago. To find the cheapest price to Chicago from your area, use momondo’s Airport-to-Airport Pricing Tool.

Which airlines fly to Chicago O'Hare Intl Airport?

There are 10 airlines that fly to Chicago O'Hare Intl Airport on a routine basis, but Qantas Airways, Air Canada and United Airlines happen to be the most popular among our users. In the past year, 61% of those who searched for flights to Chicago O'Hare Intl Airport looked to travel with Qantas Airways, making this airline the top choice among momondo travellers.

When did momondo last update prices for flights to Chicago O'Hare Intl Airport?

Prices for flights to Chicago O'Hare Intl Airport are updated daily.

How many operators does momondo search for flights to Chicago O'Hare Intl Airport?

The number of operators available for flights to Chicago O'Hare Intl Airport is 11 as of August 2025.

How old do you have to be to fly to Chicago O'Hare Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to Chicago O'Hare Intl Airport.

What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Rosemont
Naperville

Why use momondo?

Why should I use momondo to find a flight deal to Chicago?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chicago.

Can I find flights to Chicago with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for flights to Chicago to just show those with flexible booking policies.

How can momondo help me find flights to Chicago?

Once you have performed a search for flights to Chicago, momondo helps you find the right flight by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight to Chicago right now. Can momondo alert me if prices change?

Price alerts on flights to Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Chicago O'Hare Intl trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 20/8
Wed 27/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago O'Hare Intl Airport ORD

Popular Flights to Chicago O'Hare Intl Airport

Popular routes according to searches in the past day on momondo
Flights from Los Angeles to ORDfrom $130