Cheap flights from Chicago O'hare International Airport to Sydney from £1,181

Q: What are the cheapest airlines?

Fiji Airways, All Nippon, Air New Zealand, Qantas. These airlines usually offer the cheapest flights from Chicago O'hare International Airport to Sydney.

Q: What airlines fly indirectly?

Qatar Airways, All Nippon, Air Canada, British Airways, Emirates. These airlines fly from Chicago O'hare International Airport to Sydney, but you’ll have at least one layover.

Q: How long is the flight?

21 hrs. This is the shortest flight time from Chicago O'hare International Airport to Sydney.

from as little as £1,181

7 nights in Sydney, departing Chicago O'hare International Airport on 26 / Sep / 2025 with Fiji Airways (price found 67 hours ago)

Subject to availability, prices correct of the last 24 hours

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Cheap return flights from Chicago O'hare International Airport to Sydney

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All prices shown are per person based on return flights only. Prices found in the last 48 hours.

The Chicago O'hare International Airport / Sydney route

All 14874 km of it

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Sydney flight facts

What you need to know

What are the cheapest airlines?

Fiji Airways
All Nippon
Air New Zealand
Qantas

These airlines usually offer the cheapest flights from Chicago O'hare International Airport to Sydney.

What airlines fly indirectly?

Qatar Airways
All Nippon
Air Canada
British Airways
Emirates

These airlines fly from Chicago O'hare International Airport to Sydney, but you’ll have at least one layover.

How long is the flight?

21 hrs

This is the shortest flight time from Chicago O'hare International Airport to Sydney.

Alternative flights from the UK to Sydney

Check out prices for other routes

Chicago Midway Airport to Sydney

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26 / Sep / 2025 is currently the lowest priced day of the year to fly the Chicago O'hare International Airport/Sydney route. There are around 96 flights on any given week from the UK to Sydney and the cheapest month to fly right now is September.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)

LOWEST

8 °C

AVG

17 °C

HIGHEST

26 °C

Rainfall (mm)

LOWEST

60 mm

AVG

95.8 mm

HIGHEST

130 mm

Key facts about Sydney

Currency

Australian dollar

Language

English

Timezone

10 hrs ahead of GMT

How to get cheap flights from Chicago O'hare International Airport to Sydney

Tips and advice from our flight experts

If you're looking to fly from Chicago O'hare International Airport to Sydney, you might like to know that 26 / Sep / 2025 currently has the cheapest flights. At the moment, there are ten airlines flying to Sydney. Go through the results to find the right flights for you – you can adjust the filters to see find even more flights to Sydney.

The most popular airlines offering flights to Sydney are Qatar Airways, All Nippon & Air Canada. Qatar Airways is the most popular one, but that doesn’t mean their flights will be the cheapest. If you can't find a flight time that suits you, why not look at flying out from a different airport?

Your flight from Chicago O'hare International Airport to Sydney will take at least 21 hrs. On average, it takes 29 hrs to fly the 14874 km distance. Take a look at flight times to see which one works best for you.

If you need somewhere to stay for your trip to Australia, take a look at our accommodation options.