AirHint found the following cheapest return flights from Chicago (ORD) to Budapest (BUD) in October 2025 (see full year).

Return flights

22 Oct - 15 Nov	Scandinavian Airlines
29 Oct - 04 Nov	Austrian Airlines
27 Oct - 12 Nov	Air Canada
27 Oct - 03 Nov	Air Canada
31 Oct - 22 Nov	Scandinavian Airlines
14 Oct - 28 Oct	Air Canada
22 Oct - 29 Oct	Scandinavian Airlines
15 Oct - 22 Oct	Lufthansa
17 Oct - 22 Oct	Austrian Airlines
30 Oct - 06 Nov	SWISS
14 Oct - 21 Oct	Austrian Airlines
31 Oct - 07 Nov	Lufthansa
07 Oct - 14 Oct	Lufthansa
08 Oct - 15 Oct	Lufthansa
10 Oct - 19 Oct	LOT
09 Oct - 16 Oct	Austrian Airlines
10 Oct - 17 Oct	Austrian Airlines
31 Oct - 03 Nov	Lufthansa
30 Oct - 02 Nov	SWISS
29 Oct - 01 Nov	SWISS

Also check the deals for one-way flights from Chicago to Budapest in October.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Chicago to Budapest in October from $382

Return flights