Cheapest Day to Buy Flights from Chicago to Paris
Chicago to Paris is 6,665 km (4,141 mi) great-circle — commonly 8–12 h nonstop or with 1 stop. Fares typically bottom out 3–12 weeks before departure; the calendar below shows the cheapest price for every day of the next 12 months.
Check live prices on Aviasales ↗Low Fare Calendar — Chicago to Paris
When to book vs. when to fly — Chicago → Paris
Live data from recent Aviasales searches for ORD → CDG, plus a booking rule of thumb.
Lowest indicative per-adult round-trip fares seen in Aviasales searches — confirmed live on the booking site before payment.
See the cheapest month’s fares ↗Search any date — Chicago → Paris
Flight options — Chicago → Paris
Recently-seen round-trip fares — click any flight for details, alternatives and booking.
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FAQ — ORD → CDG
How much is a flight from Chicago to Paris?
Prices vary by season and departure day. The Low Fare Calendar on this page shows the cheapest fare for every day of the coming year between Chicago (ORD) and Paris (CDG).
Which airlines fly from Chicago to Paris?
The Chicago → Paris route covers about 6,665 km and commonly 8–12 h nonstop or with 1 stop. Multiple carriers operate it — search FlyTiming to compare every airline and agency serving ORD → CDG in one search.
What is the cheapest day to fly from Chicago to Paris?
It varies by month. The price card on this page highlights the cheapest month and the historically cheapest day of the week to fly this route — the Low Fare Calendar below marks low-fare days in green.
When is the best time to book flights from Chicago to Paris?
As a rule of thumb, fares on international routes are usually lowest roughly 3–12 weeks before departure — and northern-summer peak (June–August) usually means the highest fares — book early or aim for the shoulder months. The calendar below is the fastest way to spot the cheapest months for Chicago → Paris.