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$128+ Cheap flights from Chicago O'Hare Intl Airport

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ORD — SYD
7 Sep — 14 Sep1
1 adult

What to know about flights from O'Hare Intl

Discover essential information about flights departing from O'Hare Intl, including flight schedules, destinations, airlines operating at the O'Hare Intl airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 2 September 2025.

Cheapest airline

Qantas Airways

Good round-trip deal

$363 or less

Good one-way deal

$89 or less
On average, Qantas Airways currently has the cheapest one-way flight from Chicago O'Hare Intl (avg. price of $1,461).
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Price to beat on a round-trip flight from Chicago O'Hare Intl.
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Price to beat on a one-way flight from Chicago O'Hare Intl.
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Find flights from O'Hare Intl

Cheapest flights from O'Hare Intl
Explore the most affordable flight options available from O'Hare Intl. Find the lowest fares based on data from user searches, with prices last updated on 2 September 2025.

Sat 4/1007:00ORD - LAX
Nonstop4h 29mFrontier
Sat 11/1017:41LAX - ORD
Nonstop4h 18mFrontier
Deal found 30/8$227
Thu 16/1018:07ORD - LAX
1 stop16h 21mFrontier
Thu 23/1017:41LAX - ORD
Nonstop4h 18mFrontier
Deal found 1/9$253
Sat 4/1007:00ORD - LAX
Nonstop4h 29mMultiple Airlines
Fri 10/1000:09LAX - ORD
1 stop18h 05mMultiple Airlines
Deal found 30/8$278
Fri 19/919:09ORD - LAX
Nonstop4h 31mSpirit Airlines
Mon 29/905:50LAX - ORD
Nonstop4h 09mSpirit Airlines
Deal found 2/9$290
Wed 1/1014:35ORD - LAX
Nonstop4h 28mUnited Airlines
Wed 8/1013:20LAX - ORD
Nonstop4h 15mUnited Airlines
Deal found 1/9$301
Fri 19/919:09ORD - LAX
Nonstop4h 31mSpirit Airlines
Tue 23/912:05LAX - ORD
Nonstop4h 09mSpirit Airlines
Deal found 1/9$313
Tue 18/1110:42ORD - LAX
Nonstop4h 39mUnited Airlines
Mon 8/1200:25LAX - ORD
Nonstop3h 54mUnited Airlines
Deal found 2/9$318
Thu 16/1018:07ORD - LAX
1 stop16h 21mMultiple Airlines
Wed 22/1000:53LAX - ORD
1 stop8h 40mMultiple Airlines
Deal found 1/9$325
Mon 29/906:30ORD - SYD
2 stops38h 15mMultiple Airlines
Mon 6/1014:15SYD - ORD
2 stops24h 28mMultiple Airlines
Deal found 30/8$1,551
Sun 26/1005:05ORD - SYD
2 stops35h 55mMultiple Airlines
Mon 3/1114:05SYD - ORD
2 stops27h 06mMultiple Airlines
Deal found 31/8$1,624
Tue 24/216:45ORD - SYD
2 stops36h 05mFiji Airways
Tue 10/306:00SYD - ORD
2 stops31h 07mFiji Airways
Deal found 31/8$1,626
Sun 1/214:40ORD - PER
2 stops44h 55mMultiple Airlines
Sat 14/220:25PER - ORD
2 stops54h 35mMultiple Airlines
Deal found 1/9$1,629

Find flights from O'Hare Intl within your budget

 
Find flights departing from O'Hare Intl that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 2 September 2025. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Sydney

Route

Depart

Return

Price

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 4/10

08:25-17:30

1 stop11h 05m

Los Angeles

Sat 11/10

17:41-23:59

Nonstop4h 18m

$232

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 15/10

20:05-22:40

Nonstop4h 35m

Los Angeles

Wed 22/10

12:34-18:52

Nonstop4h 18m

$301

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 1/10

13:05-15:34

Nonstop4h 29m

Los Angeles

Wed 8/10

14:10-20:25

Nonstop4h 15m

$301

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 1/11

08:48-11:30

Nonstop4h 42m

Los Angeles

Fri 14/11

00:25-06:29

Nonstop4h 04m

$301

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 22/10

14:35-17:03

Nonstop4h 28m

Los Angeles

Tue 28/10

00:25-06:29

Nonstop4h 04m

$301

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 11/10

20:05-22:40

Nonstop4h 35m

Los Angeles

Wed 15/10

06:00-12:18

Nonstop4h 18m

$301

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Tue 7/10

08:50-11:19

Nonstop4h 29m

Los Angeles

Sat 11/10

14:10-20:25

Nonstop4h 15m

$301

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 4/10

08:25-17:30

1 stop11h 05m

Los Angeles

Fri 10/10

00:09-20:14

1 stop18h 05m

$304

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Tue 18/11

10:42-13:21

Nonstop4h 39m

Los Angeles

Tue 9/12

14:18-20:25

Nonstop4h 07m

$318

ChicagoSydney

ORD - SYD

ORDSYD

Chicago O'Hare Intl

Mon 29/9

06:30-11:45

2 stops38h 15m

Sydney Kingsford Smith

Mon 6/10

14:15-22:43

2 stops24h 28m

$1,551

Flights are sorted by cheapest return flights first.

Deals found on 31/8

Showing 1-10 of 60 results
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Best time to book a flight from O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly from O'Hare Intl 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.

Travel insights for flights from O'Hare Intl

Get recent, data-driven insights about flights from O'Hare Intl including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to Sydney. Price data was last updated on 29 August 2025.

The best time to book flights from Chicago O'Hare Intl Airport is 13 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport (average of $302). Flying from Chicago O'Hare Intl Airport in January will prove the most costly (average of $1,313). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Chicago O'Hare Intl Airport?

When flying from Chicago O'Hare Intl Airport check dates and pricing for the following: Qantas Airways, Air Canada. As they depart for the following popular destinations: Sydney.

Qantas Airways
Qantas Airways
From $868
Air Canada
Air Canada
From $831
American Airlines
American Airlines
From $140
Spirit Airlines
Spirit Airlines
From $59

What are popular destinations to fly to from Chicago O'Hare Intl Airport?

Chicago O'Hare Intl Airport offers frequent flights to New York (1,324 flights per day), Detroit (710 flights per day) and Los Angeles (567 flights per day).

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From $98
Los Angeles
Los Angeles
From $164
Vancouver Intl
Vancouver Intl
From $185
New York
New York
From $93

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

The cheapest city to fly to from Chicago O'Hare Intl Airport is Toronto, with prices starting at $75. Explore other affordable destinations below.

Toronto
Toronto
From $49
Raleigh-Durham
Raleigh-Durham
From $65
Washington, D.C.
Washington, D.C.
From $73
New York
New York
From $93

Airline reviews for flights from O'Hare Intl

Get insights into the airlines that provide service from O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from O'Hare Intl. In the last 7 days, Cheapflights users made a total of 647,157 searches.
Check out reviews from past customers who have flown Qantas Airways and Air Canada from Chicago O'Hare Intl Airport to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
904 reviews
Check prices

Crew

8.2

Food

6.9

Comfort

7.5

Boarding

7.7

Entertainment

7.2

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.
Qantas Airways
7.5
Good
904 reviews
Qantas Airways
7.5
Good
904 reviews
Check prices

Crew

8.2

Food

6.9

Comfort

7.5

Boarding

7.7

Entertainment

7.2

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.
Air Canada
7.1
Good
10,000 reviews
Qantas Airways
7.5
Good
904 reviews
Check prices

Crew

8.2

Food

6.9

Comfort

7.5

Boarding

7.7

Entertainment

7.2

Overall

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.

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Alternate flight departure points to O'Hare Intl

Consider leaving from one of these other departure points that are located a short distance from O'Hare Intl. Flight origins were last updated on 2 September 2025.
Flights from St. Louis
Flights from Evansville
Flights from Belleville
Flights from Bloomington
Flights from Peoria
Flights from Midway
Flights from Moline
Flights from Springfield

Related info for your journey

Access useful and relevant information related to your journey from O'Hare Intl. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 2 September 2025.

  • What are the most popular destinations to fly to from Chicago O'Hare Intl Airport?

    For the current month, the most popular flights from Chicago O'Hare Intl Airport are Athens, Ahmedabad, Atlanta. Ahmedabad, Mumbai, Athens are the most popular locations from Chicago O'Hare Intl Airport year round.

  • What is the cheapest flight from Chicago O'Hare Intl Airport to anywhere?

    Users have flown out of Chicago O'Hare Intl Airport for as low as $75 to Toronto Pearson Intl Airport (prices may vary depending on the airline and departure time). On average, users have booked flights for $747 to fly from Chicago O'Hare Intl Airport.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to anywhere?

    According to our data, users have found Spirit Airlines, American Airlines, and Air Canada to have the cheapest round-trip prices from Chicago O'Hare Intl Airport. Some of the destinations and prices are as follows: Spirit Airlines flights from Chicago O'Hare Intl Airport to New York ($90). American Airlines flights from Chicago O'Hare Intl Airport to Richmond Byrd Intl ($214). Air Canada flights from Chicago O'Hare Intl Airport to Sydney Kingsford Smith ($1,269).

  • What is the cheapest premium economy flight from Chicago O'Hare Intl Airport?

    Options for some of the cheapest premium economy flights from Chicago O'Hare Intl Airport we have found on Cheapflights are as follows:
    Fly from Chicago O'Hare Intl to New York LaGuardia Airport starting at $643
    Fly from Chicago O'Hare Intl to Newark Airport starting at $647
    Fly from Chicago O'Hare Intl to Harrisburg starting at $780
    Fly from Chicago O'Hare Intl to Toronto Pearson Intl Airport starting at $1,838

  • What is the cheapest first class flight from Chicago O'Hare Intl Airport?

    If you’re looking to fly first-class from Chicago O'Hare Intl Airport to anywhere, put New York on your list as prices start at $838 for this destination.

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

    Currently, the cheapest month for flights from Chicago O'Hare Intl Airport is August. The most expensive month for flights is January. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • Where are the cheapest places to fly to from Chicago O'Hare Intl Airport?

    View the cheapest flight destinations from Chicago O'Hare Intl Airport:
    Fly from Chicago to Sydney from $1,626 round trip
    Fly from Chicago to Melbourne from $1,797 round trip

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

    Cheapflights helps you search for flights from O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

    Cheapflights helps you find that perfect flight from O'Hare Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

    Users can book flights with no change fees policies with our dedicated filters. Book flights from O'Hare Intl flexibly with Cheapflights today.

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

    Of course! You can now track prices for flights from O'Hare Intl and get an alert from Cheapflights when they change. Click the bell icon next to the flight deals above and provide your email address to set up price alerts.

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

Cheapflights helps you find that perfect flight from O'Hare Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from O'Hare Intl flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from O'Hare Intl and get an alert from Cheapflights when they change. Click the bell icon next to the flight deals above and provide your email address to set up price alerts.

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