AirHint found the following cheapest return flights from Washington (DCA) to Lisbon (LIS) in June 2025 (see full year).

Return flights

23 Jun - 02 Jul	Air Canada
28 Jun - 30 Jun	Air Canada
26 Jun - 03 Jul	Air Canada
25 Jun - 17 Jul	TAP
26 Jun - 01 Jul	Air Canada
26 Jun - 09 Jul	TAP
27 Jun - 04 Jul	Air Canada
29 Jun - 05 Jul	TAP
28 Jun - 07 Jul	TAP
27 Jun - 12 Jul	TAP
27 Jun - 13 Jul	TAP

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 $1035

Return flights