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$408+ Cheap flights from Philadelphia (PHL) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — OPO
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Philadelphia to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$539
(United Airlines)

One-way from

$408
(Kiwi.com)

Popular in

July

Cheapest in

December

Average price

$877
Provider with most accurate pricing for Philadelphia-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Porto flights.
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From Philadelphia to Porto
Search Deals
One-way flight from Philadelphia to Porto
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($145 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Philadelphia to Porto

Cheapest flights from Philadelphia to Porto
Explore the most affordable flight options available from Philadelphia to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Air Canada deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/193:30 pmPHL - OPO
2 stops17h 20mMultiple Airlines
Sat 3/296:00 amOPO - PHL
2 stops37h 43mMultiple Airlines
Deal found 2/20$587
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/206:45 pmPHL - OPO
1 stop16h 25mUnited Airlines
Thu 3/276:00 amOPO - PHL
2 stops37h 45mUnited Airlines
Deal found 2/19$589
This Expedia deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/35:35 pmPHL - OPO
1 stop17h 10mLufthansa
Thu 4/106:00 amOPO - PHL
1 stop15h 00mLufthansa
Deal found 2/20$676
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/21:35 pmPHL - OPO
2 stops17h 05mAmerican Airlines
Wed 10/158:15 amOPO - PHL
2 stops17h 05mAmerican Airlines
Deal found 2/20$715
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:35 amPHL - OPO
2 stops20h 55mDelta
Wed 12/3111:15 amOPO - PHL
2 stops18h 37mDelta
Deal found 2/19$744
This Expedia deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/219:17 pmPHL - OPO
2 stops33h 23mIberia
Sun 4/278:35 pmOPO - PHL
2 stops28h 00mIberia
Deal found 2/20$783
This Mytrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/159:45 amPHL - OPO
2 stops27h 45mAir Canada
Tue 5/2011:05 amOPO - PHL
2 stops16h 16mAir Canada
Deal found 2/20$811
This Booking.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/158:30 pmPHL - OPO
1 stop30h 05mBritish Airways
Tue 5/2012:20 pmOPO - PHL
2 stops26h 28mBritish Airways
Deal found 2/20$861
This FlightHub deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/16:00 amPHL - OPO
2 stops27h 30mTAP AIR PORTUGAL
Wed 6/118:55 amOPO - PHL
2 stops19h 32mTAP AIR PORTUGAL
Deal found 2/20$874
This SWISS deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1411:33 amPHL - OPO
2 stops18h 52mSWISS
Fri 6/207:20 pmOPO - PHL
2 stops27h 11mSWISS
Deal found 2/20$1,351
This Justfly.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/295:35 pmPHL - OPO
2 stops17h 25mBrussels Airlines
Sun 8/34:50 pmOPO - PHL
2 stops28h 10mBrussels Airlines
Deal found 2/20$1,424
This Justfly.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/295:35 pmPHL - OPO
2 stops35h 00mAustrian Airlines
Sat 8/26:45 pmOPO - PHL
2 stops26h 15mAustrian Airlines
Deal found 2/20$1,817

Find flights from Philadelphia to Porto within your budget

Customize your flight search to find flights from Philadelphia to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Philadelphia

Fly to

Porto

Route

Depart

Return

Price

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 3/19

3:30 pm-12:50 pm

2 stops17h 20m

Porto

Sat 3/29

6:00 am-3:43 pm

2 stops37h 43m

$587

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 3/20

6:45 pm-3:10 pm

1 stop16h 25m

Porto

Thu 3/27

6:00 am-3:45 pm

2 stops37h 45m

$589

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 4/3

5:35 pm-3:45 pm

1 stop17h 10m

Porto

Thu 4/10

6:00 am-4:00 pm

1 stop15h 00m

$676

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 4/21

9:17 pm-11:40 am

2 stops33h 23m

Porto

Sun 4/27

8:35 pm-7:35 pm

2 stops28h 00m

$783

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 5/15

9:45 am-6:30 pm

2 stops27h 45m

Porto

Tue 5/20

11:05 am-10:21 pm

2 stops16h 16m

$811

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Thu 5/15

8:30 pm-7:35 am

1 stop30h 05m

Porto

Tue 5/20

12:20 pm-9:48 am

2 stops26h 28m

$861

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 6/1

6:00 am-2:30 pm

2 stops27h 30m

Porto

Wed 6/11

8:55 am-11:27 pm

2 stops19h 32m

$874

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sat 4/12

2:45 pm-5:40 pm

2 stops21h 55m

Porto

Sat 4/19

6:40 am-12:48 am

2 stops23h 08m

$1,165

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sat 6/14

11:33 am-11:25 am

2 stops18h 52m

Porto

Fri 6/20

7:20 pm-5:31 pm

2 stops27h 11m

$1,351

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 7/29

5:35 pm-4:00 pm

2 stops17h 25m

Porto

Sun 8/3

4:50 pm-4:00 pm

2 stops28h 10m

$1,424

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 16 results
1
2

Compare providers for flights from Philadelphia to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Porto in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Philadelphia to Porto

Get recent, data-driven insights about flights from Philadelphia to Porto including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Philadelphia to Porto?

Currently, January is the cheapest month in which you can book a flight from Philadelphia to Porto (average of $523). Flying from Philadelphia to Porto in June is currently the most expensive (average of $1,092). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to OPO?

Find hourly flight availability from Philadelphia to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

One of the essential ways to save on airfare from Philadelphia to Porto is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 13% on airfare.

What is the cheapest day to fly from Philadelphia to Porto?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to Porto flight should consider departing on Friday at noon when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated February 20, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Austrian Airlines from Philadelphia to Porto to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines
7.6
Good
773 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very good
8,219 reviews

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Philadelphia to Porto round-trip?

    According to our current data, United Airlines ($539), Lufthansa ($545), and Iberia ($783) offers the cheapest pricing from Philadelphia to Porto. United Airlines is currently priced 33% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Philadelphia to Porto one-way?

    $508 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Iberia and American Airlines, with prices starting from $527 and $531, respectively.

  • Can I find deals for flights from Philadelphia to Porto that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Porto.

  • Can I find deals for business class flights from Philadelphia to Porto?

    Yes. Cheapflights offers flight deals from Philadelphia to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Porto?

    Currently, January is the cheapest month in which you can book a flight from Philadelphia to Porto (average of $523). Flying from Philadelphia to Porto in June is currently the most expensive (average of $1,092). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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Alternative routes for Philadelphia to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Philadelphia to Porto

Discover the top 4 airlines that operate flights from Philadelphia to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$590Average$872FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$610Average$816FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$658Average$1,038FlexibilityNo cancel feeOn-time69%
IberiaCheapest$669Average$802FlexibilityNo cancel feeOn-time77%
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