Cheapest return IAD–DUB flights, July

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

Return flights

06 Jul - 25 Aug Porter Airlines (Canada) Ltd
09 Jul - 14 Jul Porter Airlines (Canada) Ltd
13 Jul - 17 Jul Porter Airlines (Canada) Ltd
06 Jul - 25 Aug Aer Lingus direct
30 Jul - 06 Aug Air Canada
01 Jul - 11 Jul Porter Airlines (Canada) Ltd
31 Jul - 07 Aug Air Canada
17 Jul - 26 Jul Porter Airlines (Canada) Ltd
27 Jul - 03 Aug Icelandair
26 Jul - 02 Aug Icelandair
27 Jul - 04 Aug Air Canada
29 Jul - 05 Aug Air Canada
28 Jul - 04 Aug Air Canada
22 Jul - 30 Jul Air Canada
22 Jul - 30 Jul Aer Lingus direct
29 Jul - 05 Aug Aer Lingus direct
05 Jul - 09 Jul Porter Airlines (Canada) Ltd
10 Jul - 20 Jul SWISS
06 Jul - 13 Jul Porter Airlines (Canada) Ltd
24 Jul - 31 Jul Aer Lingus direct

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

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