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

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Washington Dulles Intl to Porto Flight Information

Flights Arrive in Porto
Flights Depart from Washington Dulles Intl
Flight Price $596
Distance 3,542 miles
Airlines KLM, Turkish Airlines, TAP AIR PORTUGAL, Royal Air Maroc

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $631 or less.

FAQs for Booking Washington Dulles Intl to Porto Flights

How long does a flight from Washington Dulles Intl to Porto take?
There are no direct flights for this route listed on KAYAK, the shortest multi-flight duration is 11h 45m.
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 ($596), KLM ($668) and Turkish Airlines ($728).
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
$596
only
$596
Destination
Porto
$596
only
$596
Wed, Feb 27
IAD
Washington Dulles Intl
OPO
Porto
30h 05m
Sun, Mar 3
OPO
Porto
IAD
Washington Dulles Intl
34h 08m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Oct 19
IAD
Washington Dulles Intl
OPO
Porto
11h 45m
Sun, Oct 28
OPO
Porto
IAD
Washington Dulles Intl
33h 35m
Trip: 10 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2,131 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
IAD
AMS
Excellent 10.0

I enjoyed the attention to detail and comfort. Helped to make the flight easier to handle.

AMS
GLA
Mediocre 2.0

He missed it due to having a 32 minute layover, which he ran all the way to board.

he had no choice but to look at the closed door of his flight, and wait an additional 7 hours and they didn't even give him a voucher for food. I'm his mother, I'm currently visiting family in Scotland, so couldn't help him much. I'm pretty disgusting and disappointed by the whole experience.

ATL
AMS
Okay 5.0

... ear plugs, masks, good food or even picking seats? I remember when it was all complementary and standard on overnight flights. Oh, and the vegetarian breakfast was unfortunately poor as well. I know you can do better, because you used to.

SFO
AMS
Mediocre 3.3

Nothing really

Flew KLM 27 years ago and the airlines seem to be stuck in the same era. Food is poor quality... Have you recently checked the Gulf carriers.

AMS
SEA
Okay 5.0

The crew were hardworking, responsive, conscientious and friendly

Really poor entertainment choices esp compared to my inbound AirFrance flight. Boarding was pretty disorganized and late.

Fri, Oct 19
IAD
Washington Dulles Intl
OPO
Porto
34h 35m
Thu, Nov 1
OPO
Porto
IAD
Washington Dulles Intl
36h 05m
Trip: 14 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 19,901 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
8.0
IST
PRN
Excellent 10.0

I like the food and the service.

IST
JFK
Excellent 10.0

The only kosher foodi is no good must change

AMM
IST
Excellent 10.0

Everything.

Nothing.

IST
KWI
Good 7.3

On time

IST
LHE
Good 7.0

The service was nice and courteous

The seats were extremely uncomfortable.I have traveled business class in other airlines for same price and their comfort level surpasses Turkish airlines by a huge margin.

Thu, Nov 8
IAD
Washington Dulles Intl
OPO
Porto
21h 00m
Wed, Nov 14
OPO
Porto
IAD
Washington Dulles Intl
16h 21m
$1009
Trip: 7 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 3,857 reviews
Overall
7.4
Boarding
7.3
Comfort
7.2
Crew
7.9
Entertainment
6.6
Food
7.0
LIS
EWR
Good 7.6

The fact that people in coach class up to rows 28 as 2 choices of food and from row 29 and up have no choice we have to eat what they have twice to me

LIS
RAK
Good 6.0

There was very bad turbulance and none of the crew said anything about it.

LIS
GIG
Okay 5.0

2 hours late, problems with entertainment, bad service at chack-in

BCN
LIS
Excellent 9.0

Seats were Comfortable

N/a

LIS
FAO
Excellent 8.0

Flight delay

Fri, Oct 5
IAD
Washington Dulles Intl
OPO
Porto
12h 15m
Sat, Oct 13
OPO
Porto
IAD
Washington Dulles Intl
32h 45m
$1138
Trip: 9 days
6.5GoodShow reviews
Overall 6.5 Good
Based on 1,965 reviews
Overall
6.6
Boarding
6.5
Comfort
6.6
Crew
6.9
Entertainment
6.1
Food
6.3
CMN
IAD
Okay 5.3

Flight was overbooked. Had an issue getting my ticket 2.5 hours prior to schedule flight departure. Flight was originally scheduled to leave at 4:30. It was first delayed to 8:50 p.m. Then further delayed to 10:00 p.m. Plane left Casablanca much later than 10:00 p.m. which caused a very late arrival to IAD airport, 2:30 a.m. Boarding was a disaster. Stayed in line for over an hour not knowing if the plane was going to take off from Casablanca. No water was distributed and no communication was shared with the passengers until the crew announced boarding.

CMN
JFK
Mediocre 2.0

Nothing

The staff were rude and not helpful

JFK
CMN
Good 6.0

The staff was very emphatetic to our situation as we were traveling with the groom for his wedding. They tried all they could but unfortunately due to the lack of operational control, were unable to get us to our destination on time. Provided us with vouchers and free stay.

With little to no explanation, our flight was delayed nearly 4 hours which caused to miss our connecting flight to Egypt. Apparently, there was only one plane in floatation. We missed our connecting flight, next flight was the next day at 9 pm as they only have one flight that goes to Egypt daily. Would not suggest this airline if you need to meet certain deadlines. They compensate with food and vouchers but that isn’t sufficient when you need to ensure your on time for a wedding!

JFK
CMN
Mediocre 2.0

It was my worst flight , I had arrived at the airport at 5h 30 am and the boarding was at 11am ,

LIS
CMN
Okay 5.3

Boarding process, check in process.

Delayed flight, no entertainment, food same thing.

Wed, Oct 31
IAD
Washington Dulles Intl
OPO
Porto
21h 00m
Wed, Nov 7
OPO
Porto
IAD
Washington Dulles Intl
18h 20m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Oct 26
IAD
Washington Dulles Intl
OPO
Porto
11h 45m
Sun, Nov 4
OPO
Porto
IAD
Washington Dulles Intl
33h 00m
Trip: 10 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2,131 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
SFO
AMS
Mediocre 3.3

Nothing really

Flew KLM 27 years ago and the airlines seem to be stuck in the same era. Food is poor quality... Have you recently checked the Gulf carriers.

ATL
AMS
Okay 5.0

... ear plugs, masks, good food or even picking seats? I remember when it was all complementary and standard on overnight flights. Oh, and the vegetarian breakfast was unfortunately poor as well. I know you can do better, because you used to.

MSP
AMS
Mediocre 2.0

We are guessing they either overbooked or they didn't have sufficient passengers on a Tuesday afternoon who's final stop was Glasgow. They rebooked him for 1200 the next day. DFW to MN, St Paul to Schipole, Amsterdam to final destination, Glasgow. So he ends up having to pay for another Lyft back to our apartment in Dallas, then another additional one for the 12 noon flight the next morning. If he didn't have family living in Dallas, he would've incurred a hotel fee too.

He was bumped to the next day due to his flight being cancelled. Then re-booked the next day, with an additional layover. Then due to a 32 minute layover that left 3 minutes sooner...

AMS
CDG
Good 7.6

expedited check in with nice staff. Security staff were pleasant, and the entire check in process for everything was easy

there was no lounge close to our departure gate

AMS
ATH
Excellent 10.0

Nice flight, nice crew, and a nice experience.

Tue, Dec 18
IAD
Washington Dulles Intl
OPO
Porto
20h 32m
Thu, Jan 10
OPO
Porto
IAD
Washington Dulles Intl
30h 45m
Trip: 24 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jan 15
IAD
Washington Dulles Intl
OPO
Porto
31h 25m
Tue, Jan 22
OPO
Porto
IAD
Washington Dulles Intl
32h 40m
Trip: 8 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 19,901 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
8.0
MIA
IST
Excellent 9.6

The service, generosity of the crew, the food and the comfort in the cabin ,actually everything in this flight was 5 stars.

IST
JFK
Excellent 10.0

Everything was so great cabin crew was so nice and so friendly

JFK
IST
Excellent 9.6

Modern plane with wider than normal economy seats. Wide screens with a variety of new movies. Food was good. It’s still airplane food but it’s good. Easy process after all with booking m, checking in, onboarding etc

Nothing

IAH
IST
Excellent 10.0

The flight was excellent. Thank you.

IST
LHE
Good 7.0

The service was nice and courteous

The seats were extremely uncomfortable.I have traveled business class in other airlines for same price and their comfort level surpasses Turkish airlines by a huge margin.

Fri, Nov 2
IAD
Washington Dulles Intl
OPO
Porto
11h 45m
Sun, Nov 11
OPO
Porto
IAD
Washington Dulles Intl
33h 00m
Trip: 10 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2,131 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
ATL
AMS
Okay 5.0

... ear plugs, masks, good food or even picking seats? I remember when it was all complementary and standard on overnight flights. Oh, and the vegetarian breakfast was unfortunately poor as well. I know you can do better, because you used to.

SFO
AMS
Mediocre 3.3

Nothing really

Flew KLM 27 years ago and the airlines seem to be stuck in the same era. Food is poor quality... Have you recently checked the Gulf carriers.

AMS
GRU
Okay 5.3

Entertainment

Food and one bathroom out of service makes an awful flight

AMS
PVG
Excellent 10.0

Good service onboard, good food. On time.

MSP
AMS
Mediocre 2.0

We are guessing they either overbooked or they didn't have sufficient passengers on a Tuesday afternoon who's final stop was Glasgow. They rebooked him for 1200 the next day. DFW to MN, St Paul to Schipole, Amsterdam to final destination, Glasgow. So he ends up having to pay for another Lyft back to our apartment in Dallas, then another additional one for the 12 noon flight the next morning. If he didn't have family living in Dallas, he would've incurred a hotel fee too.

He was bumped to the next day due to his flight being cancelled. Then re-booked the next day, with an additional layover. Then due to a 32 minute layover that left 3 minutes sooner...

Tue, Dec 18
IAD
Washington Dulles Intl
OPO
Porto
20h 32m
Wed, Jan 9
OPO
Porto
IAD
Washington Dulles Intl
18h 20m
Trip: 23 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Nov 2
IAD
Washington Dulles Intl
OPO
Porto
11h 45m
Sun, Nov 11
OPO
Porto
IAD
Washington Dulles Intl
33h 00m
Trip: 10 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2,131 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
AMS
ATH
Excellent 10.0

Nice flight, nice crew, and a nice experience.

AMS
SFO
Mediocre 3.3

Very friendly crew going out of way to assist in making trip comfortable

Had travelled KLM to Amsterdam on my first flight 27 years ago and the aircrafts are stuck in that age! Lousy seats, poor quality bathrooms, lousy screens, prefer not to fly them

AMS
SEA
Okay 5.0

The crew were hardworking, responsive, conscientious and friendly

Really poor entertainment choices esp compared to my inbound AirFrance flight. Boarding was pretty disorganized and late.

AMS
PVG
Excellent 10.0

Good service onboard, good food. On time.

ATL
AMS
Okay 5.0

... ear plugs, masks, good food or even picking seats? I remember when it was all complementary and standard on overnight flights. Oh, and the vegetarian breakfast was unfortunately poor as well. I know you can do better, because you used to.

Wed, Nov 21
IAD
Washington Dulles Intl
OPO
Porto
34h 50m
Sun, Nov 25
OPO
Porto
IAD
Washington Dulles Intl
36h 05m
Trip: 5 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 19,901 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
8.0
JFK
IST
Excellent 9.6

Modern plane with wider than normal economy seats. Wide screens with a variety of new movies. Food was good. It’s still airplane food but it’s good. Easy process after all with booking m, checking in, onboarding etc

Nothing

IST
KWI
Good 7.3

On time

AMM
IST
Excellent 10.0

Everything.

Nothing.

IST
JFK
Excellent 10.0

Everything was so great cabin crew was so nice and so friendly

MIA
IST
Excellent 9.6

The service, generosity of the crew, the food and the comfort in the cabin ,actually everything in this flight was 5 stars.

Sun, Dec 16
IAD
Washington Dulles Intl
OPO
Porto
35h 12m
Thu, Jan 10
OPO
Porto
IAD
Washington Dulles Intl
30h 45m
Trip: 26 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Nov 30
IAD
Washington Dulles Intl
OPO
Porto
11h 45m
Sun, Dec 9
OPO
Porto
IAD
Washington Dulles Intl
33h 00m
Trip: 10 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2,131 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
AMS
ATH
Excellent 10.0

Nice flight, nice crew, and a nice experience.

AMS
SEA
Okay 5.0

The crew were hardworking, responsive, conscientious and friendly

Really poor entertainment choices esp compared to my inbound AirFrance flight. Boarding was pretty disorganized and late.

AMS
GRU
Okay 5.3

Entertainment

Food and one bathroom out of service makes an awful flight

IAD
AMS
Excellent 10.0

I enjoyed the attention to detail and comfort. Helped to make the flight easier to handle.

AMS
GLA
Mediocre 2.0

He missed it due to having a 32 minute layover, which he ran all the way to board.

he had no choice but to look at the closed door of his flight, and wait an additional 7 hours and they didn't even give him a voucher for food. I'm his mother, I'm currently visiting family in Scotland, so couldn't help him much. I'm pretty disgusting and disappointed by the whole experience.

Thu, Sep 27
IAD
Washington Dulles Intl
OPO
Porto
34h 35m
Tue, Oct 9
OPO
Porto
IAD
Washington Dulles Intl
36h 10m
Trip: 13 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 19,901 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
8.0
IST
PRN
Excellent 10.0

I like the food and the service.

AMM
IST
Excellent 10.0

Everything.

Nothing.

LAX
IST
Good 6.3

What once was an appealing upgrade is now outdated. Turkish Airlines should look into upgrading their fleet. Otherwise food and service are great as always.

Entertainment system was a bust. Our entire isle had issues with the system, movies not playing, music sounding awful. Even cameras and flight map were out. kudos to the cabin chief for going above and beyond and making arrangements in case people wanted to switch seats.

ORD
IST
Good 7.0

The service was very nice and courteous

The seats don’t match up to the comfort level and privacy of the other airlines

JFK
IST
Excellent 9.6

Modern plane with wider than normal economy seats. Wide screens with a variety of new movies. Food was good. It’s still airplane food but it’s good. Easy process after all with booking m, checking in, onboarding etc

Nothing

Tue, Dec 18
IAD
Washington Dulles Intl
OPO
Porto
20h 32m
Fri, Jan 11
OPO
Porto
IAD
Washington Dulles Intl
18h 20m
Trip: 25 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Sep 19
IAD
Washington Dulles Intl
OPO
Porto
23h 40m
Tue, Sep 25
OPO
Porto
IAD
Washington Dulles Intl
29h 00m
Trip: 7 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2,131 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
AMS
ATH
Excellent 10.0

Nice flight, nice crew, and a nice experience.

ATL
AMS
Okay 5.0

... ear plugs, masks, good food or even picking seats? I remember when it was all complementary and standard on overnight flights. Oh, and the vegetarian breakfast was unfortunately poor as well. I know you can do better, because you used to.

AMS
GRU
Okay 5.3

Entertainment

Food and one bathroom out of service makes an awful flight

AMS
GLA
Mediocre 2.0

He missed it due to having a 32 minute layover, which he ran all the way to board.

he had no choice but to look at the closed door of his flight, and wait an additional 7 hours and they didn't even give him a voucher for food. I'm his mother, I'm currently visiting family in Scotland, so couldn't help him much. I'm pretty disgusting and disappointed by the whole experience.

AMS
PVG
Excellent 10.0

Good service onboard, good food. On time.

Sun, Dec 16
IAD
Washington Dulles Intl
OPO
Porto
35h 12m
Wed, Jan 9
OPO
Porto
IAD
Washington Dulles Intl
18h 20m
Trip: 25 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Sep 28
IAD
Washington Dulles Intl
OPO
Porto
29h 05m
Fri, Oct 12
OPO
Porto
IAD
Washington Dulles Intl
16h 18m
Trip: 15 days
7.7GoodShow reviews
Overall 7.7 Good
Based on 2,131 reviews
Overall
8.0
Boarding
8.0
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
IAD
AMS
Excellent 10.0

I enjoyed the attention to detail and comfort. Helped to make the flight easier to handle.

SFO
AMS
Mediocre 3.3

Nothing really

Flew KLM 27 years ago and the airlines seem to be stuck in the same era. Food is poor quality... Have you recently checked the Gulf carriers.

AMS
SFO
Mediocre 3.3

Very friendly crew going out of way to assist in making trip comfortable

Had travelled KLM to Amsterdam on my first flight 27 years ago and the aircrafts are stuck in that age! Lousy seats, poor quality bathrooms, lousy screens, prefer not to fly them

AMS
GRU
Okay 5.3

Entertainment

Food and one bathroom out of service makes an awful flight

AMS
PVG
Excellent 10.0

Good service onboard, good food. On time.

*
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