Find Cheap Flights from Washington Dulles Intl to Porto (IAD - OPO)

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Looking for a cheap flight? 25% of our users found flights on this route for $965 or less.

FAQs for Booking Washington Dulles Intl to Porto Flights

How long does a flight from Washington Dulles Intl to Porto take?
An average nonstop flight takes 13h 45m, covering a distance of 3542 miles.
Which airlines provide the cheapest flights from Washington Dulles Intl to Porto?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($605), Turkish Airlines ($816) and TAP AIR PORTUGAL ($976).
Do I need a passport to fly between Washington Dulles Intl and Porto?
Yes.

Book cheap flights from Washington Dulles Intl to Porto (round-trip)

Airports
Origin
Washington
$605
only
$605
Destination
Porto
$605
only
$605
Tue, Jan 30
IAD
OPO
13h 45m
Thu, Mar 29
OPO
IAD
13h 00m
Trip: 58 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 8
IAD
OPO
31h 30m
Sun, Mar 18
OPO
IAD
35h 50m
Trip: 10 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 16649 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
8.0
BGW
IST
Good 6.0

Passengers in transit are herded to the transit lounge where there are almost no facilities.

SFO
IST
Excellent 10.0

Good connection from SFO to TLV. Good service good food

No problem

IST
SFO
Excellent 9.3

Not enough bathrooms. Very long lines to go to the bathroom.

MIA
IST
Excellent 9.0

Turkish air had great service, food, entertainment and nice comfortable planes. Left on time and arrived on time. Two unrelated issues at Miami airport they didn't have a separate line for the people holding global entry and at the Istanbul airport no info desks to direct passenger to their connecting flight

OTP
IST
Excellent 10.0

On-time departure. very polite and friendly staff and we got there fast!

Mon, Feb 12
IAD
OPO
16h 34m
Mon, Feb 19
OPO
IAD
14h 46m
Trip: 8 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2854 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
MIA
LIS
Mediocre 2.0

Ability to see a bit of Lisbon on the way

Baggage charges that were not shown anywhere on the website. A nasty surprise when we checked luggage. Lost wallet on plane and customer service was unhelpful.

LIS
MIA
Okay 4.6

All flights have been on time. Seats and entertainment system are acceptable

Apart from the unorganized immigration and check-in process the service is very average. On both transatlantic flights the toilets did not work properly. Furthermore the business practice to charge you for any luggage $ 90 at airport without prior notice during the booking process is quite unpleasant and uncommon for transatlantic flights. Would be good that airline as well as internet travel agent would advice about this additional costs in a more transparent way before you purchase the ticket

AMS
LIS
Okay 5.2

I got to Lisbon on time.

just another bus ride

BUD
LIS
Excellent 10.0

The plane was on time, attendants were friendly. Food and drink was provided at no additional cost.

I have no complaints!

ORY
LIS
Okay 5.6

40euro checked bag fee on an international itinerary was an unpleasant surprise. They were quite disorganized; our airport-printed boarding passes wouldn't scan at the gate, they didn't have a jet-way ready upon arrival in Lisbon ...

Thu, Dec 7
IAD
OPO
26h 40m
Tue, Dec 12
OPO
IAD
31h 58m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Mar 5
IAD
OPO
26h 15m
Thu, Mar 15
OPO
IAD
34h 09m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Thu, May 17
IAD
OPO
41h 45m
Sat, May 26
OPO
IAD
17h 45m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 18
IAD
OPO
26h 35m
Sat, May 5
OPO
IAD
32h 35m
Trip: 18 days
Overall 0.0 Poor
Based on 0 reviews
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.