AirHint found the following cheapest return flights from Washington (IAD) to Charleroi (CRL) in October 2025 (see full year).

Return flights

14 Oct - 21 Oct	Air Canada
05 Oct - 16 Oct	Frontier Airlines
30 Oct - 06 Nov	Austrian Airlines
20 Oct - 27 Oct	SWISS
07 Oct - 21 Oct	TAP
24 Oct - 27 Oct	SWISS
09 Oct - 21 Oct	Lufthansa
07 Oct - 13 Oct	SWISS
29 Oct - 22 Nov	TAP
10 Oct - 01 Nov	Austrian Airlines
10 Oct - 15 Oct	Austrian Airlines
19 Oct - 30 Oct	TAP
02 Oct - 25 Oct	Porter Airlines (Canada) Ltd
31 Oct - 07 Nov	TAP
24 Oct - 01 Nov	TAP
25 Oct - 01 Nov	Aer Lingus
31 Oct - 23 Nov	TAP
31 Oct - 09 Nov	TAP

Also check the deals for one-way flights from Washington to Charleroi 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 Washington to Charleroi in October from 446€

Return flights