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

Return flights

28 Jul - 04 Aug	Lufthansa
28 Jul - 04 Aug	United	direct
29 Jul - 05 Aug	United	direct
27 Jul - 03 Aug	SWISS
24 Jul - 31 Jul	Lufthansa
24 Jul - 31 Jul	United	direct
31 Jul - 07 Aug	United	direct
30 Jul - 06 Aug	Lufthansa
26 Jul - 02 Aug	Lufthansa
26 Jul - 02 Aug	United	direct
27 Jul - 03 Aug	United	direct
08 Jul - 23 Jul	Lufthansa
25 Jul - 01 Aug	Lufthansa
17 Jul - 31 Jul	British Airways
07 Jul - 26 Jul	Lufthansa
12 Jul - 19 Jul	SWISS
10 Jul - 17 Jul	United	direct
12 Jul - 19 Jul	United	direct
11 Jul - 18 Jul	Lufthansa
11 Jul - 18 Jul	United	direct

Also check the deals for one-way flights from Washington to Dublin 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 Dublin in July from $671

Return flights