Are direct flights from Chicago to Sydney always the best option?

Direct flights usually offer convenience and save travel time, but they are not always the most economical choice. Flights with layovers can sometimes be significantly cheaper, depending on the route and airline. Consider your budget and time constraints when deciding.

Can flexible travel dates help on Chicago to Sydney flights?

Yes, being flexible with your travel dates can often lead to finding more affordable flights. Prices can vary greatly even within the same week, with mid-week travel usually being less expensive than weekends. Adjusting your departure or return by a few days may yield savings.

What extra costs should I check before booking Chicago to Sydney flights?

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight meal costs. Some airlines may also charge for amenities like Wi-Fi or entertainment. These additional fees can impact the total price of your trip.

Flights From Chicago

To Sydney

Cheap Flights from Chicago to Sydney

Browse current best options from Chicago. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Chicago

RatePunk searches hundreds of travel sites at once for deals on flights to Sydney

Prices updated 7 days ago

483 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Oct 26, 2026.)

Today’s best flight deals from Chicago to Sydney

Explore current cheapest deals departing from Chicago to Sydney

2026-12-08 – 2026-12-15
CHI - Sydney
88% AI deal score
$1,382
$1,017
Round trip
2027-02-01 – 2027-02-10
CHI - Sydney
80% AI deal score
$1,130
$1,035
Round trip
2027-02-04 – 2027-02-15
CHI - Sydney
79% AI deal score
$1,127
$1,072
Round trip
2027-02-10 – 2027-02-27
CHI - Sydney
79% AI deal score
$1,129
$1,072
Round trip
2027-03-12 – 2027-03-24
CHI - Sydney
80% AI deal score
$1,151
$1,072
Round trip
2026-11-09 – 2026-11-22
CHI - Sydney
79% AI deal score
$1,149
$1,091
Round trip
2027-01-22 – 2027-01-26
CHI - Sydney
78% AI deal score
$1,210
$1,161
Round trip
2027-02-01 – 2027-03-03
CHI - Sydney
76% AI deal score
$1,132
$1,183
Round trip
2027-02-03 – 2027-02-14
CHI - Sydney
76% AI deal score
$1,127
$1,191
Round trip
2027-02-08 – 2027-02-15
CHI - Sydney
76% AI deal score
$1,131
$1,192
Round trip

Chicago to Sydney: Overview

Insights for flights from Chicago to Sydney

For cheap flights from Chicago to Sydney, fares right now are typically $1692–$2106, with a median of $1878. Current fares are near the typical level for this route. New deals appear almost daily for this long-haul journey.

When is the cheapest time to fly from Chicago to Sydney? The data indicates that May is typically the most affordable month, with a median fare of $1791. Following closely are November, with a median of $1813, and February, with a median of $1821.

Most itineraries for this route connect at least once, as 0% of recent fares were non-stop. When connections are necessary, the typical number of stopovers is 2.

How long is the flight from Chicago to Sydney? A typical journey, including connections, takes approximately 64h 55m. This reflects the long-haul nature of the route, which covers a distance of 14862 km.

How much is a round trip from Chicago to Sydney

Regular price: $1,163 - $2,147

Prices for flights from Chicago to Sydney are currently below the regular range.

The regular price range for flights from Chicago to Sydney is between $1163 and $2147. The current lowest deal is $1025 with Frontier Airlines for travel from Dec 8-Dec 15.

now $1,025

Low $1,163

High $2,147

The cheapest time to fly from Chicago to Sydney

The cheapest month to fly from Chicago to Sydney is May, with a median price of $1791. The most expensive month is October, with a median price of $2160. Prices are generally lower from February to November.

May

Cheapest

Flights from $1,791

October

Most Expensive

Flights from $2,160

Feb

Mar

May

Aug

Sep

Oct

Nov

Dec

Direct flights from Chicago to Sydney

Frontier Airlines

Alaska Airlines, Inc.

Air New Zealand

All Nippon Airways

Last-minute flights going from Chicago to Sydney

Tue, Oct 27

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

QantasLink

$1,316

$1,233

One-way

Fri, Oct 30

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,270

$1,328

One-way

Fri, Oct 30

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,270

$1,339

One-way

Sat, Oct 31

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,270

$1,309

One-way

Sat, Oct 31

⌛ Last-Minute

MDW - Sydney

Chicago (MDW) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,341

$1,314

One-way

Sat, Oct 31

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,270

$1,320

One-way

Biggest price drops on these dates for flights from Chicago to Sydney

6 nights

Dec 5 - Dec 11

$1,939 → $1,246

36%

7 nights

Dec 8 - Dec 15

$1,382 → $1,025

26%

7 nights

Oct 27 - Nov 3

$1,407 → $1,265

10%

5 nights

Feb 5 - Feb 10

$1,143 → $1,054

Popular Airports to fly from Chicago to Sydney

Chicago - Sydney route insights

💸 Price insights

Recent fares are near the typical level.

Recent fares from Chicago to Sydney are near the typical level of $1878.

📅 Best time to fly

Fly in May for the lowest prices.

Historically, May has the lowest median price at $1791 for flights from Chicago to Sydney.

⏱️ Flight duration

Connecting flights typically take 64h 55m.

Flights from Chicago to Sydney typically involve connecting flights with a median duration of 64h 55m.

✈️ Airlines & availability

Connecting flights are dominant on this route.

Direct flights are not common; most routes from Chicago to Sydney require two stopovers.

🏆 Airline highlight

Frontier Airlines offers the most deals.

Frontier Airlines has 52 deals, more than other airlines for this route.

🎯 Booking tip

Deals appear frequently for this route.

Deals for flights from Chicago to Sydney are frequent, appearing within a 30-day window.

Chicago main airports to depart from

O Hare International (ORD)

Cheapest

Consider O'Hare International for flights to Sydney, offering the cheapest prices from Chicago.

📍 ~25 km from Chicago city center (reachable by car or train)

💸 Flights from ~$1,236

Sydney main airports to arrive at

Sydney (SYD)

Cheapest

Sydney Airport is a convenient arrival choice for flights from Chicago to Sydney.

📍 ~9 km from city center (reachable by car)

💸 Flights from ~$1,036

Airports nearby Sydney used as alternative

Canberra (CBR)

Canberra Airport is a major domestic and international-capable airport, offering a full range of cabin classes.

📍 ~240 km from Sydney (approximately 3 hours drive from Sydney city center)

💸 Flights from ~$1,678

Business & First Class Flight Deals to Sydney

Discover luxury on the budget with premium cabin class on flights from Chicago to Sydney.

Elite

Best Elite deals to Sydney

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From ORD

Elite

Nov 29

Sydney, Australia

81% AI deal score

$7,515

$6,840

Save $675

Icelandair, +1

Business Class

From ORD

Elite

Nov 29

Sydney, Australia

80% AI deal score

$7,314

$6,817

Save $497

Icelandair, +1

Business Class

From ORD

Elite

Dec 07

Sydney, Australia

80% AI deal score

$7,378

$6,818

Save $560

Icelandair, +1

Business Class

From ORD

Elite

Nov 23

Sydney, Australia

80% AI deal score

$7,324

$6,840

Save $484

Icelandair, +1

Business Class

From ORD

Elite

Nov 29

Sydney, Australia

80% AI deal score

$7,328

$6,848

Save $480

Icelandair, +1

Business Class

From ORD

Elite

Apr 14

Sydney, Australia

80% AI deal score

$7,309

$7,008

Save $301

Alaska Airlines, Inc., +1

Business Class

From ORD

Elite

Apr 17

Sydney, Australia

80% AI deal score

$7,338

$7,008

Save $330

Alaska Airlines, Inc., +1

Business Class

From ORD

Elite

Apr 17

Sydney, Australia

80% AI deal score

$7,362

$7,008

Save $354

Alaska Airlines, Inc., +1

Business Class

From ORD

Elite

Mar 21

Sydney, Australia

79% AI deal score

$7,084

$6,757

Save $327

Air Canada

Business Class

From ORD

Elite

Nov 29

Sydney, Australia

79% AI deal score

$7,229

$6,818

Save $411

Icelandair, +1

Business Class

From ORD

Elite

Nov 23

Sydney, Australia

79% AI deal score

$7,140

$6,818

Save $322

Icelandair, +1

Business Class

From ORD

Elite

Dec 05

Sydney, Australia

79% AI deal score

$7,331

$6,873

Save $458

Icelandair, +1

Business Class

Frequently Asked Questions About Flights to Sydney

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across various airlines and booking platforms can often reveal better deals. Setting up price alerts may also help you catch drops in fares.

Booking in advance is often recommended for long-haul international flights to secure better prices. However, prices can fluctuate, so monitoring fare trends over several weeks may be beneficial. There isn't a single 'best' time, as it can vary.

Comparing nearby airports can sometimes offer more flight options or different pricing. While it may require additional travel time to reach the airport, the potential savings on airfare could be significant. Always factor in the total cost and convenience.

Chicago to Sydney: Overview

Insights for flights from Chicago to Sydney

Most itineraries for this route connect at least once, as 0% of recent fares were non-stop. When connections are necessary, the typical number of stopovers is 2.

How much is a round trip from Chicago to Sydney

Regular price: $1,163 - $2,147

Prices for flights from Chicago to Sydney are currently below the regular range.

The regular price range for flights from Chicago to Sydney is between $1163 and $2147. The current lowest deal is $1025 with Frontier Airlines for travel from Dec 8-Dec 15.

now $1,025

Low $1,163

High $2,147

The cheapest time to fly from Chicago to Sydney

May

Cheapest

Flights from $1,791

October

Most Expensive

Flights from $2,160

Feb

Mar

May

Aug

Sep

Oct

Nov

Dec

Direct flights from Chicago to Sydney

Frontier Airlines

Alaska Airlines, Inc.

Air New Zealand

All Nippon Airways

Last-minute flights going from Chicago to Sydney

Tue, Oct 27

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

QantasLink

$1,316

$1,233

One-way

Fri, Oct 30

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,270

$1,328

One-way

Fri, Oct 30

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,270

$1,339

One-way

Sat, Oct 31

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,270

$1,309

One-way

Sat, Oct 31

⌛ Last-Minute

MDW - Sydney

Chicago (MDW) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,341

$1,314

One-way

Sat, Oct 31

⌛ Last-Minute

ORD - Sydney

Chicago (ORD) - Sydney (SYD)

Frontier Airlines, Alaska Airlines, Inc.

$1,270

$1,320

One-way

Biggest price drops on these dates for flights from Chicago to Sydney

6 nights

Dec 5 - Dec 11

$1,939 → $1,246

36%

7 nights

Dec 8 - Dec 15

$1,382 → $1,025

26%

7 nights

Oct 27 - Nov 3

$1,407 → $1,265

10%

5 nights

Feb 5 - Feb 10

$1,143 → $1,054

Popular Airports to fly from Chicago to Sydney

Chicago - Sydney route insights

💸 Price insights

Recent fares are near the typical level.

Recent fares from Chicago to Sydney are near the typical level of $1878.

📅 Best time to fly

Fly in May for the lowest prices.

Historically, May has the lowest median price at $1791 for flights from Chicago to Sydney.

⏱️ Flight duration

Connecting flights typically take 64h 55m.

Flights from Chicago to Sydney typically involve connecting flights with a median duration of 64h 55m.

✈️ Airlines & availability

Connecting flights are dominant on this route.

Direct flights are not common; most routes from Chicago to Sydney require two stopovers.

🏆 Airline highlight

Frontier Airlines offers the most deals.

Frontier Airlines has 52 deals, more than other airlines for this route.

🎯 Booking tip

Deals appear frequently for this route.

Deals for flights from Chicago to Sydney are frequent, appearing within a 30-day window.

Chicago main airports to depart from

O Hare International (ORD)

Cheapest

Consider O'Hare International for flights to Sydney, offering the cheapest prices from Chicago.

📍 ~25 km from Chicago city center (reachable by car or train)

💸 Flights from ~$1,236

Sydney main airports to arrive at

Sydney (SYD)

Cheapest

Sydney Airport is a convenient arrival choice for flights from Chicago to Sydney.

📍 ~9 km from city center (reachable by car)

💸 Flights from ~$1,036

Airports nearby Sydney used as alternative

Canberra (CBR)

Canberra Airport is a major domestic and international-capable airport, offering a full range of cabin classes.

Sydney, Australia

79% AI deal score

$7,331

$6,873

Save $458

Icelandair, +1

Business Class

Frequently Asked Questions About Flights to Sydney

Cheap Flights from Chicago to Sydney

Today’s best flight deals from Chicago to Sydney

Chicago to Sydney: Overview

Insights for flights from Chicago to Sydney

How much is a round trip from Chicago to Sydney

The cheapest time to fly from Chicago to Sydney

Direct flights from Chicago to Sydney

Last-minute flights going from Chicago to Sydney

Biggest price drops on these dates for flights from Chicago to Sydney

Popular Airports to fly from Chicago to Sydney

Chicago - Sydney route insights

Recent fares are near the typical level.

Fly in May for the lowest prices.

Connecting flights typically take 64h 55m.

Connecting flights are dominant on this route.

Frontier Airlines offers the most deals.

Deals appear frequently for this route.

Chicago main airports to depart from

Sydney main airports to arrive at

Airports nearby Sydney used as alternative

Business & First Class Flight Deals to Sydney

Best Elite deals to Sydney

Nov 29

Nov 29

Dec 07

Nov 23

Nov 29

Apr 14

Apr 17

Apr 17

Mar 21

Nov 29

Nov 23

Dec 05

Frequently Asked Questions About Flights to Sydney

How can I find cheap flights from Chicago to Sydney?

When should I book flights from Chicago to Sydney?

Should I compare nearby airports for flights from Chicago to Sydney?

Are direct flights from Chicago to Sydney always the best option?

Can flexible travel dates help on Chicago to Sydney flights?

What extra costs should I check before booking Chicago to Sydney flights?

Related routes

More routes from Chicago

Flights to Sydney from other cities

Chicago to Sydney: Overview

Insights for flights from Chicago to Sydney

How much is a round trip from Chicago to Sydney

The cheapest time to fly from Chicago to Sydney

Direct flights from Chicago to Sydney

Last-minute flights going from Chicago to Sydney

Biggest price drops on these dates for flights from Chicago to Sydney

Popular Airports to fly from Chicago to Sydney

Chicago - Sydney route insights

Recent fares are near the typical level.

Fly in May for the lowest prices.

Connecting flights typically take 64h 55m.

Connecting flights are dominant on this route.

Frontier Airlines offers the most deals.

Deals appear frequently for this route.

Chicago main airports to depart from

Sydney main airports to arrive at

Airports nearby Sydney used as alternative

Business & First Class Flight Deals to Sydney

Best Elite deals to Sydney

Nov 29

Nov 29

Dec 07

Nov 23

Nov 29

Apr 14

Apr 17

Apr 17

Mar 21

Nov 29

Nov 23

Dec 05

Frequently Asked Questions About Flights to Sydney

How can I find cheap flights from Chicago to Sydney?

When should I book flights from Chicago to Sydney?

Should I compare nearby airports for flights from Chicago to Sydney?