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

Return flights

29 Oct - 04 Nov	Lufthansa
31 Oct - 22 Nov	Scandinavian Airlines
27 Oct - 04 Nov	Austrian Airlines
26 Oct - 15 Nov	Scandinavian Airlines
28 Oct - 04 Nov	Lufthansa
29 Oct - 05 Nov	Lufthansa
30 Oct - 06 Nov	Lufthansa
19 Oct - 08 Nov	Lufthansa
24 Oct - 15 Nov	TAP
20 Oct - 15 Nov	Lufthansa
22 Oct - 29 Oct	Lufthansa
20 Oct - 27 Oct	Lufthansa
20 Oct - 28 Oct	SWISS
18 Oct - 28 Oct	Spirit Airlines
23 Oct - 30 Oct	Lufthansa
21 Oct - 28 Oct	Lufthansa
24 Oct - 31 Oct	Austrian Airlines
18 Oct - 24 Oct	Air Serbia
18 Oct - 25 Oct	Air Serbia
24 Oct - 27 Oct	Austrian Airlines

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 479€

Return flights