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

Return flights

26 Jul - 23 Aug	TAP
25 Jul - 01 Aug	TAP
07 Jul - 05 Aug	TAP
07 Jul - 19 Jul	Royal Air Maroc
04 Jul - 12 Jul	Royal Air Maroc
03 Jul - 11 Jul	Royal Air Maroc
01 Jul - 09 Jul	TAP
02 Jul - 10 Jul	TAP
26 Jul - 23 Aug	Lufthansa	direct
25 Jul - 01 Aug	Lufthansa	direct
01 Jul - 09 Jul	Lufthansa	direct
02 Jul - 10 Jul	Lufthansa	direct
04 Jul - 11 Jul	Lufthansa	direct
03 Jul - 11 Jul	Lufthansa	direct

Also check the deals for one-way flights from Washington to Barcelona 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 Barcelona in July from $769

Return flights