AirHint found the following cheapest return flights from Washington (IAD) to Brussels (BRU) in July 2026 (see full year).

Return flights

22 Jul - 29 Jul	Aer Lingus
15 Jul - 26 Aug	Aer Lingus
27 Jul - 10 Aug	Aer Lingus
21 Jul - 27 Jul	Aer Lingus
22 Jul - 27 Jul	Aer Lingus
23 Jul - 27 Jul	Aer Lingus
14 Jul - 21 Jul	Royal Air Maroc
01 Jul - 08 Jul	Icelandair
06 Jul - 13 Jul	Icelandair
16 Jul - 23 Jul	Icelandair
22 Jul - 29 Jul	United	direct
15 Jul - 26 Aug	Brussels Airlines	direct
02 Jul - 16 Jul	United
26 Jul - 02 Aug	Sun Country Airlines

Also check the deals for one-way flights from Washington to Brussels in July.

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 Brussels in July from 507€

Return flights