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

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Fri 2/23
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Good to Know

Average Price:
$1192
(avg. price over the last 2 weeks)
Good Deal:
$950
or less (round trip)

When to Book Flights from Washington to Porto

Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $950 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 13% cheaper 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 13h 35m, 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 Turkish Airlines ($813), Multiple Airlines ($842) and TAP AIR PORTUGAL ($911).
Do I need a passport to fly between Washington and Porto?
Yes.

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

Airports
Origin
Washington
$813
only
$813
$844
only
$844
Destination
Porto
$813
only
$813
Tue, Apr 3
IAD
OPO
34h 35m
Tue, Apr 10
OPO
IAD
36h 10m
Trip: 8 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 18087 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
LAX
IST
Mediocre 2.0

Nothing

Nothing

SFO
IST
Excellent 9.6

The service, food,seats,crew,hot towel, slippers & more.

Nothing. Everything was great!

TIA
IST
Good 7.3

Boarding, on time

Food can be better. Steward never brought the blanket and it was cold. Entertainment is not good and game did not work.

IST
SOF
Excellent 9.6

Everything was perfect!!! I have no remarks!!!

MIA
IST
Excellent 10.0

Great service and brand new plane!

Mon, Apr 16
IAD
OPO
21h 45m
Mon, Apr 23
OPO
IAD
19h 51m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 3
DCA
OPO
14h 24m
Thu, May 3
OPO
DCA
27h 15m
Trip: 31 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 3227 reviews
Overall
7.5
Boarding
7.4
Comfort
7.3
Crew
8.0
Entertainment
6.8
Food
7.1
LIS
MUC
Okay 4.0

Next-day connecting flight after a delayed arrival and involuntary stopover in Porto due to air traffic over LIS. This time around, the flight took off an hour late because of [guess...] air traffic. Well, my dear LIS management, that's how you sink your national carrier.

ZRH
LIS
Good 6.6

Uma antiga queixa minha era o tratamento dispensado pela tripulação da TAP aos passageiros. Muitas vezes faziam o seu serviço sem paciência e até mesmo de forma rude. Nos meus últimos 3 vôos pela TAP, a tripulação vem se mostrando muito mais cordial e até mesmo divertida, sendo bastante simpática. Ainda pode melhorar? Claro que sim, mas agora não tenho mais "medo" de pedir um copo d'água a mais para os comissários.

Sei que a tendência dos vôos low cost é não oferecer muito conforto aos passageiros, mas o espaço entre as cadeiras está ridículo até mesmo para pessoas com estatura mediana como eu (1,80 m). A poltrona, apesar de não reclinar, era até confortável, mas os meu joelhos ficaram espremidos pela poltrona da frente. Sem contar que, para um vôo de 3h, deveria ser disponibilizado algum entretenimento, mesmo que através do wifi (como já fazem as cias. brasileiras - se no Brasil já fazem, qualquer país do mundo é capaz de fazer!)

LIS
SID
Good 6.0

Staff courteous compared to our previous TAP FLIGHT

LIS
MIA
Excellent 8.0

Excellent Service - pleasant flight - comfortable seats

Poor entertainment system

BCN
LIS
Mediocre 2.0

Nothing

They gave someone else seats I had reserved for 6 months and that I had paid extra for. I will take that up with the company forewidth

Tue, Mar 20
IAD
OPO
13h 40m
Tue, Mar 27
OPO
IAD
15h 40m
Trip: 8 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 1756 reviews
Overall
8.0
Boarding
7.9
Comfort
7.7
Crew
8.4
Entertainment
7.1
Food
7.4
LAX
AMS
Mediocre 2.0

My bagage broke

I paid extra fee for extra bagage which was tv and i paid insurance my tv broke and no one responces for it

DMM
AMS
Okay 5.6

Tiny old cramped plane.

PTY
AMS
Good 6.3

KLM crews look unhappy with their work. Everything they do is a favor not duty.

AMS
DTW
Mediocre 2.0

Amesterdam airport employee was really rude

AMS
LAX
Okay 4.0

The cabin crew were pretty good. That's about all that was good.

I paid almost $400 for upgraded seats. When I got to the airport-- no seats-- both ways!! i didn't even have regular seat assignments. I had to choose from the last few seats available. The ticket agent, the gate agent and the cabin crew all did nothing to make up for the fact that their system screwed up and stuck me in a cramped coach seat in the back of the plane for 11 hours-- TWICE! Beyond that, KLM must have one of the oldest fleets in the sky. Both ways LAX->AMS->LAX, I was on a 30-35 year old 747 with no wifi, no power and a ten-year-old entertainment system. Never again.

Tue, Apr 17
IAD
OPO
34h 35m
Tue, May 1
OPO
IAD
36h 10m
Trip: 15 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 18087 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
KBP
IST
Excellent 10.0

The best trip! Thk"s! Good luck,T.Airlines!

SFO
IST
Excellent 9.6

The service, food,seats,crew,hot towel, slippers & more.

Nothing. Everything was great!

ISB
IST
Excellent 9.3

Comfortable seats and friendly crew

Food could be better esp snacks

LAX
IST
Mediocre 2.0

Nothing

Nothing

IST
SOF
Excellent 9.6

Everything was perfect!!! I have no remarks!!!

Thu, Apr 19
IAD
OPO
23h 20m
Mon, Apr 30
OPO
IAD
36h 51m
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Apr 9
IAD
OPO
31h 20m
Sun, Apr 15
OPO
IAD
32h 55m
Trip: 7 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 18087 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
JFK
IST
Excellent 10.0

Food, service, entertainment, cleanness of the plane

Too many announcements in the beginning of the flight.

IST
OTP
Excellent 10.0

i like because can interline from qatar airways and baggage through as well. so i do not need to check in again.

IST
IAD
Good 7.6

The food was good and the staff were nice

The seats are very small and extremely discomfort for overseas flight

KBP
IST
Excellent 10.0

The best trip! Thk"s! Good luck,T.Airlines!

SFO
IST
Excellent 9.6

The service, food,seats,crew,hot towel, slippers & more.

Nothing. Everything was great!

Tue, Apr 3
DCA
OPO
13h 35m
Tue, Apr 10
OPO
DCA
14h 38m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 8
DCA
OPO
19h 01m
Tue, May 22
OPO
DCA
32h 55m
Trip: 15 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 3227 reviews
Overall
7.5
Boarding
7.4
Comfort
7.3
Crew
8.0
Entertainment
6.8
Food
7.1
BCN
LIS
Mediocre 2.0

Nothing

They gave someone else seats I had reserved for 6 months and that I had paid extra for. I will take that up with the company forewidth

LIS
MIA
Excellent 8.0

Excellent Service - pleasant flight - comfortable seats

Poor entertainment system

LIS
SSA
Okay 4.0

The food was not available for the business class passengers and we had to take it from economy.

MIA
LIS
Okay 5.6

Food was abundant and pretty good. I paid $91.95 US (think it was 75 euro) for the exit row and felt this was money well spent.

They charged me $90 for my luggage. Several weeks or perhaps even months after I booked, I received an e-mail saying I had booked Super Cheap Economy or some such. It had a link to pay for 'additional services' but not luggage. At the time of booking, I checked and the price given was $35. So, I have protested the additional $55 with my CC company and will see what happens. BTW the luggage was not overweight. They turned off all the lights, including my personal reading lamp, so I could not read and had to just sit there doing nothing. That really blew big chunks. I only got two small glasses of wine.

JFK
LIS
Okay 5.0

CRew was rude. Food was poor.checked baggage fees exhorbitant

Tue, Apr 10
IAD
OPO
34h 35m
Sun, Apr 15
OPO
IAD
32h 55m
Trip: 6 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 18087 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
JFK
IST
Excellent 10.0

Food, service, entertainment, cleanness of the plane

Too many announcements in the beginning of the flight.

IST
SOF
Excellent 9.6

Everything was perfect!!! I have no remarks!!!

IST
OTP
Excellent 10.0

i like because can interline from qatar airways and baggage through as well. so i do not need to check in again.

ISB
IST
Excellent 9.3

Comfortable seats and friendly crew

Food could be better esp snacks

IST
IAD
Good 7.6

The food was good and the staff were nice

The seats are very small and extremely discomfort for overseas flight

Tue, Apr 24
DCA
OPO
14h 53m
Fri, Apr 27
OPO
DCA
33h 05m
Trip: 4 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 3227 reviews
Overall
7.5
Boarding
7.4
Comfort
7.3
Crew
8.0
Entertainment
6.8
Food
7.1
MIA
LIS
Okay 5.6

Food was abundant and pretty good. I paid $91.95 US (think it was 75 euro) for the exit row and felt this was money well spent.

They charged me $90 for my luggage. Several weeks or perhaps even months after I booked, I received an e-mail saying I had booked Super Cheap Economy or some such. It had a link to pay for 'additional services' but not luggage. At the time of booking, I checked and the price given was $35. So, I have protested the additional $55 with my CC company and will see what happens. BTW the luggage was not overweight. They turned off all the lights, including my personal reading lamp, so I could not read and had to just sit there doing nothing. That really blew big chunks. I only got two small glasses of wine.

LIS
MIA
Excellent 8.0

Excellent Service - pleasant flight - comfortable seats

Poor entertainment system

BCN
LIS
Mediocre 2.0

Nothing

They gave someone else seats I had reserved for 6 months and that I had paid extra for. I will take that up with the company forewidth

TXL
LIS
Okay 4.0

No usb Mediocre to disgusting food

ZRH
LIS
Good 6.6

Uma antiga queixa minha era o tratamento dispensado pela tripulação da TAP aos passageiros. Muitas vezes faziam o seu serviço sem paciência e até mesmo de forma rude. Nos meus últimos 3 vôos pela TAP, a tripulação vem se mostrando muito mais cordial e até mesmo divertida, sendo bastante simpática. Ainda pode melhorar? Claro que sim, mas agora não tenho mais "medo" de pedir um copo d'água a mais para os comissários.

Sei que a tendência dos vôos low cost é não oferecer muito conforto aos passageiros, mas o espaço entre as cadeiras está ridículo até mesmo para pessoas com estatura mediana como eu (1,80 m). A poltrona, apesar de não reclinar, era até confortável, mas os meu joelhos ficaram espremidos pela poltrona da frente. Sem contar que, para um vôo de 3h, deveria ser disponibilizado algum entretenimento, mesmo que através do wifi (como já fazem as cias. brasileiras - se no Brasil já fazem, qualquer país do mundo é capaz de fazer!)

Mon, Apr 9
IAD
OPO
19h 00m
Tue, Apr 17
OPO
IAD
15h 51m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 11
IAD
OPO
31h 20m
Sun, Apr 15
OPO
IAD
32h 55m
Trip: 5 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 18087 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
IST
IAD
Good 7.6

The food was good and the staff were nice

The seats are very small and extremely discomfort for overseas flight

JFK
IST
Excellent 10.0

Food, service, entertainment, cleanness of the plane

Too many announcements in the beginning of the flight.

TIA
IST
Good 7.3

Boarding, on time

Food can be better. Steward never brought the blanket and it was cold. Entertainment is not good and game did not work.

JFK
IST
Excellent 8.3

I did like the food, very nice stuff.

I order some to help to find my gate for a another international flight,but no one came. For such long flight, definitely need to have sits with more space. Very hard to flight in such tight space

SFO
IST
Excellent 9.6

The service, food,seats,crew,hot towel, slippers & more.

Nothing. Everything was great!

Fri, May 4
DCA
OPO
20h 05m
Tue, May 15
OPO
DCA
32h 55m
Trip: 12 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 3227 reviews
Overall
7.5
Boarding
7.4
Comfort
7.3
Crew
8.0
Entertainment
6.8
Food
7.1
MIA
LIS
Okay 5.6

Food was abundant and pretty good. I paid $91.95 US (think it was 75 euro) for the exit row and felt this was money well spent.

They charged me $90 for my luggage. Several weeks or perhaps even months after I booked, I received an e-mail saying I had booked Super Cheap Economy or some such. It had a link to pay for 'additional services' but not luggage. At the time of booking, I checked and the price given was $35. So, I have protested the additional $55 with my CC company and will see what happens. BTW the luggage was not overweight. They turned off all the lights, including my personal reading lamp, so I could not read and had to just sit there doing nothing. That really blew big chunks. I only got two small glasses of wine.

LIS
SID
Good 6.0

Staff courteous compared to our previous TAP FLIGHT

LIS
SSA
Okay 4.0

The food was not available for the business class passengers and we had to take it from economy.

BLQ
LIS
Okay 5.0

It was fine, on time. I didn't have a checked bag or I would have waited in line at check-in for at least 30-45 minutes. Online check-in was relatively easy and digital boarding pass was convenient.

Seats are small, if you need to check a bag it will take forever. The underseat area is much.smaller than other airlines. The flight was very delayed because of some discrepancy regarding the number of passengers. Nothing seemed to be wrong but it took forever!

LIS
MUC
Okay 4.0

Next-day connecting flight after a delayed arrival and involuntary stopover in Porto due to air traffic over LIS. This time around, the flight took off an hour late because of [guess...] air traffic. Well, my dear LIS management, that's how you sink your national carrier.

Mon, May 21
IAD
OPO
18h 25m
Fri, May 25
OPO
IAD
15h 45m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 8
IAD
OPO
34h 35m
Mon, May 14
OPO
IAD
32h 55m
Trip: 7 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 18087 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
MIA
IST
Excellent 10.0

Great service and brand new plane!

JFK
IST
Excellent 8.3

I did like the food, very nice stuff.

I order some to help to find my gate for a another international flight,but no one came. For such long flight, definitely need to have sits with more space. Very hard to flight in such tight space

JFK
IST
Excellent 10.0

Food, service, entertainment, cleanness of the plane

Too many announcements in the beginning of the flight.

SFO
IST
Excellent 9.6

The service, food,seats,crew,hot towel, slippers & more.

Nothing. Everything was great!

TIA
IST
Good 7.3

Boarding, on time

Food can be better. Steward never brought the blanket and it was cold. Entertainment is not good and game did not work.

Tue, May 8
DCA
OPO
19h 01m
Sat, May 12
OPO
DCA
14h 30m
Trip: 5 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 3227 reviews
Overall
7.5
Boarding
7.4
Comfort
7.3
Crew
8.0
Entertainment
6.8
Food
7.1
LIS
SID
Good 6.0

Staff courteous compared to our previous TAP FLIGHT

BLQ
LIS
Okay 5.0

It was fine, on time. I didn't have a checked bag or I would have waited in line at check-in for at least 30-45 minutes. Online check-in was relatively easy and digital boarding pass was convenient.

Seats are small, if you need to check a bag it will take forever. The underseat area is much.smaller than other airlines. The flight was very delayed because of some discrepancy regarding the number of passengers. Nothing seemed to be wrong but it took forever!

TXL
LIS
Okay 4.0

No usb Mediocre to disgusting food

JFK
LIS
Okay 5.0

CRew was rude. Food was poor.checked baggage fees exhorbitant

BCN
LIS
Mediocre 2.0

Nothing

They gave someone else seats I had reserved for 6 months and that I had paid extra for. I will take that up with the company forewidth

Mon, May 7
IAD
OPO
18h 20m
Tue, May 22
OPO
IAD
16h 25m
Trip: 16 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 8
IAD
OPO
34h 35m
Mon, May 21
OPO
IAD
32h 55m
Trip: 14 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 18087 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
7.9
IST
SOF
Excellent 9.6

Everything was perfect!!! I have no remarks!!!

LAX
IST
Mediocre 2.0

Nothing

Nothing

SFO
IST
Excellent 9.6

The service, food,seats,crew,hot towel, slippers & more.

Nothing. Everything was great!

TIA
IST
Good 7.3

Boarding, on time

Food can be better. Steward never brought the blanket and it was cold. Entertainment is not good and game did not work.

JFK
IST
Excellent 10.0

Food, service, entertainment, cleanness of the plane

Too many announcements in the beginning of the flight.

Thu, May 10
DCA
OPO
21h 05m
Sat, May 19
OPO
DCA
14h 30m
Trip: 10 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 3227 reviews
Overall
7.5
Boarding
7.4
Comfort
7.3
Crew
8.0
Entertainment
6.8
Food
7.1
JFK
LIS
Okay 5.0

CRew was rude. Food was poor.checked baggage fees exhorbitant

BCN
LIS
Mediocre 2.0

Nothing

They gave someone else seats I had reserved for 6 months and that I had paid extra for. I will take that up with the company forewidth

TXL
LIS
Okay 4.0

No usb Mediocre to disgusting food

JFK
LIS
Mediocre 3.6

TAP seems to have trouble landing at its own global hub. Three hours wasted in Porto before the traffic over LIS had cleared up. First time TAP, last time TAP.

BLQ
LIS
Okay 5.0

It was fine, on time. I didn't have a checked bag or I would have waited in line at check-in for at least 30-45 minutes. Online check-in was relatively easy and digital boarding pass was convenient.

Seats are small, if you need to check a bag it will take forever. The underseat area is much.smaller than other airlines. The flight was very delayed because of some discrepancy regarding the number of passengers. Nothing seemed to be wrong but it took forever!

Show more results

Washington to Porto Flight Information

Flights Arrive in Porto
Flights Depart from Washington
Flight Price $813
Distance 3524 miles
Airlines Turkish Airlines, TAP AIR PORTUGAL, KLM
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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.