Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
High demand for flights, 22% potential price rise
Best time to find cheap flights, 4% potential price drop
Average for round-trip flights in April 2021
From Sydney to Chicago
One-way flight from Sydney to Chicago
Cheapest prices for Chicago-O'Hare Intl flights by month
The cheapest ticket to Chicago-O'Hare Intl found for each month in 2021 based on historical flight searches by Cheapflights users.
At the present moment the cheapest month to fly to Chicago-O'Hare Intl is currently May; with December being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.
When is the best time to fly to Chicago-O'Hare Intl?
Average Chicago flight ticket prices and weather conditions for 2021 and 2022 by month.
SYD - CHI
$1,076 - $2,163
1 - 29 °C
17 - 109 mm
Flying to Chicago-O'Hare Intl in May is usually considered the best time to fly. However, you will find other deals are always available year round. July sees the temperatures in Chicago-O'Hare Intl peak to their warmest. May tends, on average, to see the most amount of rainfall.
When is the best time to book a flight to Chicago-O'Hare Intl?
The best time to book flights to Chicago-O'Hare Intl is 1 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.
Which day is cheapest to fly to Chicago-O'Hare Intl?
Tuesday is currently, on average, the cheapest day to fly to Chicago-O'Hare Intl. Flying on Saturday will result in higher flight prices.
What time of day is cheapest to fly to ORD airport?
To get the best value, try booking a flight in the morning when visiting Chicago-O'Hare Intl. Generally the prices will increase for flights in the afternoon as these tend to have higher demand.
Alternative, similarly priced destinations
See alternative destinations where airfare is generally forecast to be close to Chicago-O'Hare Intl flight prices.