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Wondering how long to fly from Chicago to Sydney? Flights from Chicago to Sydney usually take around 20 to 24 hours with one connection. Flight duration can vary depending on weather conditions, wind direction, aircraft type, the connecting airport, and the length of the layover.
There are currently no nonstop flights from Chicago O’Hare International Airport (ORD) to Sydney Airport (SYD). Most journeys connect through airports such as Los Angeles, San Francisco, Dallas, or Vancouver, and the total travel time depends heavily on the selected connection.
Chicago and Sydney are in different time zones. Sydney is usually 15 to 17 hours ahead of Chicago, depending on daylight saving time in both locations.
For the quickest journey, compare one-stop Chicago to Sydney flights, connecting airports, total journey times, airfares, baggage allowances, and airline services before booking.
The average Chicago to Sydney flight time depends on your departure airport, arrival airport, airline, aircraft type, connection airport, weather, wind direction, and flight path. There are currently no regular nonstop flights between Chicago and Sydney. Most one-stop journeys usually take around 19 hours 30 minutes to 24 hours.
Sydney Airport (SYD) is the main arrival airport for travelers visiting Sydney. Melbourne Airport (MEL) and Brisbane Airport (BNE) are optional alternatives only. Both require a separate domestic flight or substantial additional travel before reaching Sydney.
| Departure Airport | Arrival Airport | Estimated Flight Time | Travel Tip |
|---|---|---|---|
| Chicago O’Hare International Airport (ORD) | Sydney Airport (SYD) | Around 19 hrs 30 mins–24 hrs with 1 stop | The most practical arrival airport for Sydney. Compare connection times carefully because there are no regular nonstop flights. |
| Chicago O’Hare International Airport (ORD) | Melbourne Airport (MEL) | Around 21–27 hrs with 1 or more stops | An optional airport only for travelers also visiting Melbourne. A separate domestic flight is normally required to reach Sydney. |
For the shortest overall journey, book a one-stop itinerary directly to Sydney Airport. Melbourne and Brisbane should only be used when those cities are included in the trip.
Connecting flights from Chicago to Sydney run about 20 to 26 hours depending on your routing. Qantas and United Airlines operate the most frequent connections on this route. Flying via Los Angeles or San Francisco tends to offer the shortest total travel time.
Layovers in hub cities typically last 2 to 4 hours. Longer connections can push total travel time past the average, but sometimes those tickets cost $200 to $400 less than the shorter itineraries. Worth checking both options.
Sydney is 17 hours ahead of Chicago. Plan your arrival accordingly to minimize jet lag.
Most flights depart Chicago in the afternoon or evening for long-haul destinations. Booking at least 6 to 8 weeks out usually gets you the best fares. October and November tend to be cheaper months to fly this route since it's between peak summer travel and the winter holiday rush.
The flight from Chicago to Sydney takes around 20 to 26 hours with one connection. Total travel time depends on your layover city and duration.
The distance from Chicago to Sydney is approximately 9,232 miles (14,857 kilometers). This long-haul route crosses multiple time zones.
Sydney is 17 hours ahead of Chicago. Plan your arrival time accordingly to help adjust to the local schedule.
No, there are no direct flights from Chicago to Sydney as of 2025. All flights require at least one connection, typically through major hub cities like Los Angeles, San Francisco.
Qantas, United Airlines, American Airlines, Air Canada, Korean Air operate connecting service from Chicago to Sydney. Qantas has the most weekly departures on this route.
Planning beyond this route? Explore more flight times, distances, and travel durations using our tools below. Start with our Flight Time Calculator to estimate journey times worldwide, or browse average travel times from your departure city using the Chicago Flight Times.
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