Porto (OPO) to Washington (IAD) flight deal in economy from $641

Good Availability
51% of dates checked are available within 10% of the lowest price

Wednesday, January 6th, 2027

2 round-trip options

Returning
Thu, Jan 14, 20278 Day Trip
$835 USD
Returning
Fri, Jan 15, 20279 Day Trip
$835 USD