AirHint found the following cheapest return flights from Washington (IAD) to Lisbon (LIS)
in April 2025 (see full year ).
Return flights
01 Apr
- 07 Apr
Scandinavian Airlines
$ 588
07 Apr
- 13 Apr
Royal Air Maroc
$ 626
18 Apr
- 27 Apr
Royal Air Maroc
$ 626
22 Apr
- 28 Apr
Turkish Airlines
$ 646
24 Apr
- 14 May
Scandinavian Airlines
$ 648
06 Apr
- 13 Apr
Royal Air Maroc
$ 660
07 Apr
- 14 Apr
Royal Air Maroc
$ 660
29 Apr
- 06 May
Aer Lingus
$ 694
18 Apr
- 26 Apr
Royal Air Maroc
$ 700
07 Apr
- 12 Apr
Royal Air Maroc
$ 704
01 Apr
- 06 Apr
Scandinavian Airlines
$ 705
02 Apr
- 09 Apr
TAP
$ 714
direct
24 Apr
- 04 May
Turkish Airlines
$ 760
25 Apr
- 02 May
Scandinavian Airlines
$ 771
24 Apr
- 14 May
TAP
$ 842
direct
25 Apr
- 02 May
TAP
$ 865
direct
29 Apr
- 06 May
TAP
$ 869
direct
24 Apr
- 04 May
United
$ 871
direct
Also check the deals for one-way flights from Washington to Lisbon in April .
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.