AirHint found the following cheapest return flights from Washington (IAD) to Lisbon (LIS) in June 2026 (see full year).

Return flights

02 Jun - 09 Jun	Iberia
01 Jun - 09 Jun	Iberia
02 Jun - 10 Jun	Porter Airlines (Canada) Ltd
03 Jun - 11 Jun	Royal Air Maroc
28 Jun - 12 Jul	Royal Air Maroc
26 Jun - 04 Jul	Royal Air Maroc
11 Jun - 21 Jun	Porter Airlines (Canada) Ltd
19 Jun - 29 Jun	Royal Air Maroc
25 Jun - 04 Jul	Iberia
03 Jun - 10 Jun	TAP	direct
02 Jun - 09 Jun	TAP	direct
01 Jun - 09 Jun	TAP	direct
02 Jun - 10 Jun	TAP	direct
28 Jun - 12 Jul	TAP	direct
25 Jun - 04 Jul	TAP	direct
26 Jun - 04 Jul	TAP	direct

Also check the deals for one-way flights from Washington to Lisbon in June.

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 Lisbon in June from 624€

Return flights