Find Cheap Flights from Washington to Porto (WAS - OPO)

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Wed 11/22
Wed 11/29
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Good to Know

Average Price:
$1271
(avg. price over the last 2 weeks)
Good Deal:
$921
or less (round trip)

When to Book Flights from Washington to Porto

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

When looking for a cheap flight, consider that 25% of our users selected a flight on this route for $920 or less.
The cheapest flight from Washington to Porto was found 65 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
Morning departure is around 6% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Washington to Porto Flights

How long does a flight from Washington to Porto take?
An average nonstop flight takes 11h 25m, covering a distance of 3524 miles.
Which airlines provide the cheapest flights from Washington to Porto?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($656), TAP AIR PORTUGAL ($774) and Turkish Airlines ($853).
Do I need a passport to fly between Washington and Porto?
Yes.

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

Airports
Origin
Washington
$656
only
$656
$774
only
$774
Destination
Porto
$656
only
$656
Wed, Mar 21
IAD
OPO
18h 40m
Mon, Mar 26
OPO
IAD
26h 10m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Feb 1
DCA
OPO
11h 28m
Tue, Feb 13
OPO
DCA
28h 58m
Trip: 13 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
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!

LIS
GIG
Okay 5.3

I got to Rio de Janeiro on time

cramped seats, minimal water offered by crew on 9.5 hour flight. I also found the extra charge to reserve a seat on this flight a serious affront to economic sensibility

LIS
MAD
Mediocre 2.0

Of no change is BULLSHIT

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

LIS
BOS
Okay 5.3

75 Euro per bag!!!

Fri, Mar 23
IAD
OPO
33h 40m
Fri, Mar 30
OPO
IAD
35h 55m
Trip: 8 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 16589 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
8.0
IST
ADB
Excellent 10.0

On board catering and new planes are a plus

IST
IAD
Excellent 9.6

Very grateful our flight wasn't packed- this allowed us to lay down a little and sleep. The attendants were very nice and helpful.

IST
KHI
Mediocre 3.6

Nothing

Everything

ZNZ
IST
Excellent 10.0

Food & Wine

10hrs of screaming kids in row 12! Ta RDG

BOM
IST
Excellent 8.0

excellent service.

internet should be free.

Sun, Jan 7
IAD
OPO
51h 01m
Mon, Jan 15
OPO
IAD
38h 00m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Jan 20
IAD
OPO
27h 06m
Sat, Jan 27
OPO
IAD
29h 37m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Jan 11
DCA
OPO
18h 31m
Thu, Jan 18
OPO
DCA
15h 58m
Trip: 8 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
MAD
LIS
Excellent 9.3

Plane too small and doesn’t have the thing to charge my phone

AMS
LIS
Okay 5.2

I got to Lisbon on time.

just another bus ride

EWR
LIS
Excellent 8.0

Fast boarding

Had to wait forever to find out Gate Number.

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

LIS
MIA
Okay 5.6

Accommodating flight crew. Good food. Nice landing and take off.

I am a permanent resident of USA and have a Green Card and the portuguese boarding crew gave me a hard time about my paper work. I was very disappointed by the way they treated me.

Thu, Feb 1
IAD
OPO
39h 06m
Tue, Feb 13
OPO
IAD
27h 37m
Trip: 13 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Mar 21
DCA
OPO
12h 24m
Tue, Mar 27
OPO
DCA
15h 28m
Trip: 7 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
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!

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.

AMS
LIS
Okay 5.2

I got to Lisbon on time.

just another bus ride

LIS
BOS
Okay 5.3

75 Euro per bag!!!

LIS
JFK
Excellent 9.0

business class was great seat comfortable the lounge was very nice

Food on plane ok wish had more choices

Wed, May 9
IAD
OPO
27h 00m
Wed, May 23
OPO
IAD
36h 05m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 9
DCA
OPO
12h 30m
Wed, May 23
OPO
DCA
14h 14m
Trip: 15 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
AMS
LIS
Okay 5.2

I got to Lisbon on time.

just another bus ride

EWR
LIS
Excellent 8.0

Fast boarding

Had to wait forever to find out Gate Number.

LIS
BOS
Good 6.6

The boarding was delayed

LIS
JFK
Excellent 9.0

business class was great seat comfortable the lounge was very nice

Food on plane ok wish had more choices

LIS
GIG
Okay 5.3

I got to Rio de Janeiro on time

cramped seats, minimal water offered by crew on 9.5 hour flight. I also found the extra charge to reserve a seat on this flight a serious affront to economic sensibility

Fri, May 4
IAD
OPO
20h 25m
Fri, May 11
OPO
IAD
41h 45m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 9
DCA
OPO
14h 30m
Wed, May 23
OPO
DCA
14h 14m
Trip: 15 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
MAD
LIS
Excellent 9.3

Plane too small and doesn’t have the thing to charge my phone

LIS
JFK
Excellent 9.0

business class was great seat comfortable the lounge was very nice

Food on plane ok wish had more choices

LIS
MAD
Mediocre 2.0

Of no change is BULLSHIT

LIS
BOS
Good 6.6

The boarding was delayed

LIS
GIG
Okay 5.3

I got to Rio de Janeiro on time

cramped seats, minimal water offered by crew on 9.5 hour flight. I also found the extra charge to reserve a seat on this flight a serious affront to economic sensibility

Wed, Dec 6
IAD
OPO
23h 08m
Sat, Dec 16
OPO
IAD
23h 24m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Jan 19
DCA
OPO
20h 01m
Sat, Jan 27
OPO
DCA
13h 58m
Trip: 9 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
MAD
LIS
Excellent 9.3

Plane too small and doesn’t have the thing to charge my phone

EWR
LIS
Excellent 8.0

Fast boarding

Had to wait forever to find out Gate Number.

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!

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

LIS
JFK
Excellent 9.0

business class was great seat comfortable the lounge was very nice

Food on plane ok wish had more choices

Fri, Nov 24
IAD
OPO
17h 03m
Fri, Dec 1
OPO
IAD
43h 09m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Dec 13
DCA
OPO
11h 25m
Tue, Jan 9
OPO
DCA
26h 58m
Trip: 28 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
LIS
BOS
Good 6.6

The boarding was delayed

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

EWR
LIS
Excellent 8.0

Fast boarding

Had to wait forever to find out Gate Number.

MAD
LIS
Excellent 9.3

Plane too small and doesn’t have the thing to charge my phone

LIS
GIG
Okay 5.3

I got to Rio de Janeiro on time

cramped seats, minimal water offered by crew on 9.5 hour flight. I also found the extra charge to reserve a seat on this flight a serious affront to economic sensibility

Wed, Dec 6
DCA
OPO
13h 01m
Sat, Dec 16
OPO
DCA
27h 04m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Nov 24
DCA
OPO
13h 25m
Fri, Dec 1
OPO
DCA
14h 24m
Trip: 8 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
MAD
LIS
Excellent 9.3

Plane too small and doesn’t have the thing to charge my phone

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.

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!

LIS
GIG
Okay 5.3

I got to Rio de Janeiro on time

cramped seats, minimal water offered by crew on 9.5 hour flight. I also found the extra charge to reserve a seat on this flight a serious affront to economic sensibility

LIS
BOS
Okay 5.3

75 Euro per bag!!!

Wed, Dec 13
IAD
OPO
30h 03m
Tue, Jan 9
OPO
IAD
30h 37m
$1027
Trip: 28 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
LIS
JFK
Excellent 9.0

business class was great seat comfortable the lounge was very nice

Food on plane ok wish had more choices

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
GIG
Okay 5.3

I got to Rio de Janeiro on time

cramped seats, minimal water offered by crew on 9.5 hour flight. I also found the extra charge to reserve a seat on this flight a serious affront to economic sensibility

EWR
LIS
Excellent 8.0

Fast boarding

Had to wait forever to find out Gate Number.

LIS
MAD
Mediocre 2.0

Of no change is BULLSHIT

Fri, Mar 23
DCA
OPO
13h 24m
Fri, Mar 30
OPO
DCA
15h 28m
$1105
Trip: 8 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 2842 reviews
Overall
7.6
Boarding
7.5
Comfort
7.4
Crew
8.1
Entertainment
6.9
Food
7.2
LIS
BOS
Okay 5.3

75 Euro per bag!!!

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!

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

LIS
MAD
Mediocre 2.0

Of no change is BULLSHIT

LIS
GIG
Okay 5.3

I got to Rio de Janeiro on time

cramped seats, minimal water offered by crew on 9.5 hour flight. I also found the extra charge to reserve a seat on this flight a serious affront to economic sensibility

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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.