Washington (DCA) to Porto (OPO) cheap flight deal from $488 USD in economy class

ACAir Canada

LHLufthansa

LXSwiss International Air Lines

Ronald Reagan Washington National Airport

Washington, United States

OPO

Francisco Sá Carneiro Airport

Porto, Portugal

$894 USD

-45%$488 USD

Verified Sep 20, 2025 at 1:33 PM

September 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20$1,063 21$1,003 22$999 23$1,029 24$1,156 25$1,050 26$1,060 27$869 28$809 29$804 30$855 1$1,005 2$928 3$863 4$751 5$691

Rare Availability

9% of dates checked are available within 10% of the lowest price

Tuesday, September 30th, 2025

10 round-trip options

Returning

Sun, Oct 5, 2025•5 Day Trip

$1,821 USD

Google Flights

Returning

Mon, Oct 6, 2025•6 Day Trip

$1,810 USD

Google Flights

Returning

Tue, Oct 7, 2025•7 Day Trip

$1,074 USD

Google Flights

Returning

Wed, Oct 8, 2025•8 Day Trip

$1,012 USD

Google Flights

Returning

Thu, Oct 9, 2025•9 Day Trip

$986 USD

Google Flights

Returning

Fri, Oct 10, 2025•10 Day Trip

$855 USD

Google Flights

Returning

Sat, Oct 11, 2025•11 Day Trip

$1,106 USD

Google Flights

Returning

Sun, Oct 12, 2025•12 Day Trip

$1,425 USD

Google Flights

Returning

Mon, Oct 13, 2025•13 Day Trip

$1,034 USD

Google Flights

Returning

Tue, Oct 14, 2025•14 Day Trip

$912 USD

Google Flights