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

According to our current data, SWISS ($525), United Airlines ($528), and Lufthansa ($547) offers the cheapest pricing from Philadelphia to Porto. SWISS is currently priced 35% below the average price you’ll pay for this route.

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

$479 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Lufthansa and Air Canada, with prices starting from $483 and $492, respectively.

What are the most popular airlines that fly from Philadelphia to Porto?

American Airlines, Iberia and Lufthansa are the most popular airlines when flying from Philadelphia to Porto.

What is the cheapest day to fly round-trip from Philadelphia to Porto?

Users have found that flying from Philadelphia to Porto on a Tuesday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

The best pricing can be found in the month of December. Prices to Porto from Philadelphia average $815. You can even find prices in December for less than $815, as users have found deals to Porto from as low as $590. The month of July appears to be one of the more expensive times to travel to Porto from Philadelphia. Flying in the targeted month can save you up to 34%.

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.

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.

$372+ Save on Flights from Philadelphia to Porto

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Cheap flight deals from Philadelphia to Porto

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$525 (Flightnetwork)
One-way from	$372 (Kiwi.com)
Popular in	July
Cheapest in	December
Average price	$760

Provider with most accurate pricing for Philadelphia-Porto flight deals.

Search Deals

Provider most trusted by Cheapflights users for Philadelphia-Porto flights.

Search Deals

From Philadelphia to Porto

Search Deals

One-way flight from Philadelphia to Porto

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($141 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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 March 10, 2025.

Mon 3/244:55 pmPHL - OPO

2 stops21h 45mSWISS

Mon 4/77:20 pmOPO - PHL

2 stops51h 07mSWISS

Deal found 3/9

$525

Tue 4/112:50 pmPHL - OPO

2 stops15h 55mUnited Airlines

Wed 4/96:00 amOPO - PHL

2 stops38h 43mUnited Airlines

Deal found 3/10

$528

Wed 4/29:31 amPHL - OPO

2 stops44h 54mMultiple Airlines

Wed 4/96:15 amOPO - PHL

2 stops37h 32mMultiple Airlines

Deal found 3/9

$540

Sun 3/236:35 pmPHL - OPO

1 stop13h 00mLufthansa

Tue 4/86:00 amOPO - PHL

1 stop15h 00mLufthansa

Deal found 3/9

$547

Wed 10/156:35 pmPHL - OPO

2 stops12h 05mBritish Airways

Wed 10/298:40 pmOPO - PHL

1 stop23h 55mBritish Airways

Deal found 3/9

$555

Fri 8/156:30 pmPHL - OPO

2 stops12h 10mAmerican Airlines

Wed 8/2012:20 pmOPO - PHL

1 stop32h 30mAmerican Airlines

Deal found 3/9

$563

Mon 8/119:45 amPHL - OPO

1 stop18h 45mAir Canada

Tue 8/1912:15 pmOPO - PHL

2 stops30h 36mAir Canada

Deal found 3/9

$574

Sun 3/237:24 pmPHL - OPO

2 stops16h 01mDelta

Tue 4/86:20 amOPO - PHL

2 stops23h 28mDelta

Deal found 3/9

$680

Sun 9/78:25 pmPHL - OPO

1 stop10h 15mIberia

Mon 9/158:15 amOPO - PHL

1 stop12h 40mIberia

Deal found 3/10

$684

Tue 8/121:15 pmPHL - OPO

2 stops16h 25mKLM

Sun 8/175:00 amOPO - PHL

2 stops18h 26mKLM

Deal found 3/9

$1,025

Best flights from Philadelphia to Porto
Discover carefully curated flight deals from Philadelphia to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2025.

Mon 3/244:55 pmPHL - OPO

2 stops21h 45mSWISS

Mon 4/77:20 pmOPO - PHL

2 stops51h 07mSWISS

Deal found 3/9

$525

Tue 4/112:50 pmPHL - OPO

2 stops15h 55mUnited Airlines

Wed 4/96:00 amOPO - PHL

2 stops38h 43mUnited Airlines

Deal found 3/10

$528

Wed 4/29:31 amPHL - OPO

2 stops44h 54mMultiple Airlines

Wed 4/96:15 amOPO - PHL

2 stops37h 32mMultiple Airlines

Deal found 3/9

$540

Sun 3/236:35 pmPHL - OPO

1 stop13h 00mLufthansa

Tue 4/86:00 amOPO - PHL

1 stop15h 00mLufthansa

Deal found 3/9

$547

Fri 8/156:30 pmPHL - OPO

2 stops12h 10mAmerican Airlines

Wed 8/2012:20 pmOPO - PHL

1 stop32h 30mAmerican Airlines

Deal found 3/9

$563

Mon 8/119:45 amPHL - OPO

1 stop18h 45mAir Canada

Tue 8/1912:15 pmOPO - PHL

2 stops30h 36mAir Canada

Deal found 3/9

$574

Mon 3/2410:05 pmPHL - OPO

1 stop29h 35mBritish Airways

Mon 4/79:10 pmOPO - PHL

1 stop24h 15mBritish Airways

Deal found 3/9

$609

Sun 3/237:24 pmPHL - OPO

2 stops16h 01mDelta

Tue 4/86:20 amOPO - PHL

2 stops23h 28mDelta

Deal found 3/9

$680

Sat 9/65:30 pmPHL - OPO

2 stops33h 05mIberia

Mon 9/158:15 amOPO - PHL

2 stops17h 05mIberia

Deal found 3/8

$704

Tue 8/121:15 pmPHL - OPO

2 stops16h 25mKLM

Sun 8/175:00 amOPO - PHL

2 stops18h 26mKLM

Deal found 3/9

$1,025

Sat 5/246:10 pmPHL - OPO

1 stop11h 45mTAP AIR PORTUGAL

Sat 5/315:40 pmOPO - PHL

1 stop20h 59mTAP AIR PORTUGAL

Deal found 3/9

$1,430

Last-minute flights from Philadelphia to Porto
Discover last-minute flight deals from Philadelphia to Porto. Data last updated March 10, 2025 and is based on user searches.

Mon 3/173:30 pmPHL - OPO

2 stops17h 20mMultiple Airlines

Tue 3/257:30 pmOPO - PHL

2 stops47h 20mMultiple Airlines

Deal found 3/10

$790

Mon 3/1710:05 pmPHL - OPO

1 stop29h 35mBritish Airways

Tue 3/2510:45 amOPO - PHL

1 stop31h 25mBritish Airways

Deal found 3/10

$1,064

Tue 3/186:35 pmPHL - OPO

1 stop13h 05mLufthansa

Tue 3/256:00 amOPO - PHL

1 stop15h 00mLufthansa

Deal found 3/10

$797

Tue 3/186:00 amPHL - OPO

3 stops25h 40mUnited Airlines

Tue 3/256:00 amOPO - PHL

2 stops19h 20mUnited Airlines

Deal found 3/10

$812

Sun 3/236:35 pmPHL - OPO

1 stop13h 00mLufthansa

Tue 4/86:00 amOPO - PHL

1 stop15h 00mLufthansa

Deal found 3/9

$547

Sun 3/237:24 pmPHL - OPO

2 stops16h 01mDelta

Tue 4/86:20 amOPO - PHL

2 stops23h 28mDelta

Deal found 3/9

$680

Mon 3/244:55 pmPHL - OPO

2 stops21h 45mSWISS

Mon 4/77:20 pmOPO - PHL

2 stops51h 07mSWISS

Deal found 3/9

$525

Mon 3/2410:05 pmPHL - OPO

1 stop29h 35mBritish Airways

Mon 4/79:10 pmOPO - PHL

1 stop24h 15mBritish Airways

Deal found 3/9

$609

Tue 4/112:50 pmPHL - OPO

2 stops15h 55mUnited Airlines

Wed 4/96:00 amOPO - PHL

2 stops38h 43mUnited Airlines

Deal found 3/10

$528

Wed 4/29:31 amPHL - OPO

2 stops44h 54mMultiple Airlines

Wed 4/96:15 amOPO - PHL

2 stops37h 32mMultiple Airlines

Deal found 3/9

$540

One-way flights from Philadelphia to Porto
Search for one-way flight options from Philadelphia to Porto. Find affordable one-way fares based on user searches. Data last updated March 10, 2025.

Wed 4/307:00 amPHL - OPO

3 stops34h 00mMultiple Airlines

Deal found 3/9

$372

Sat 4/53:10 pmPHL - OPO

2 stops13h 35mUnited Airlines

Deal found 3/10

$479

Sat 4/195:35 pmPHL - OPO

1 stop17h 10mLufthansa

Deal found 3/9

$483

Thu 5/19:45 amPHL - OPO

2 stops20h 40mAir Canada

Deal found 3/9

$492

Sat 4/199:31 amPHL - OPO

2 stops27h 59mSWISS

Deal found 3/9

$497

Wed 5/2110:45 amPHL - OPO

2 stops15h 50mAmerican Airlines

Deal found 3/9

$522

Sun 4/203:43 pmPHL - OPO

2 stops20h 02mDelta

Deal found 3/10

$531

Sat 5/246:10 pmPHL - OPO

1 stop11h 45mTAP AIR PORTUGAL

Deal found 3/9

$702

Find flights from Philadelphia to Porto within your budget

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/24

4:55 pm-6:40 pm

2 stops21h 45m

Porto

Mon 4/7

7:20 pm-5:27 pm

2 stops51h 07m

$525

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 4/1

12:50 pm-9:45 am

2 stops15h 55m

Porto

Wed 4/9

6:00 am-3:43 pm

2 stops38h 43m

$528

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Wed 4/2

9:31 am-11:25 am

2 stops44h 54m

Porto

Wed 4/9

6:15 am-2:47 pm

2 stops37h 32m

$540

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 3/23

6:35 pm-11:35 am

1 stop13h 00m

Porto

Tue 4/8

6:00 am-4:00 pm

1 stop15h 00m

$547

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Fri 8/15

6:30 pm-11:40 am

2 stops12h 10m

Porto

Wed 8/20

12:20 pm-3:50 pm

1 stop32h 30m

$563

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 8/11

9:45 am-9:30 am

1 stop18h 45m

Porto

Tue 8/19

12:15 pm-1:51 pm

2 stops30h 36m

$574

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Mon 3/24

10:05 pm-7:40 am

1 stop29h 35m

Porto

Mon 4/7

9:10 pm-4:25 pm

1 stop24h 15m

$609

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sun 3/23

7:24 pm-3:25 pm

2 stops16h 01m

Porto

Tue 4/8

6:20 am-12:48 am

2 stops23h 28m

$680

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Sat 9/6

5:30 pm-7:35 am

2 stops33h 05m

Porto

Mon 9/15

8:15 am-8:20 pm

2 stops17h 05m

$704

PhiladelphiaPorto

PHL - OPO

PHLOPO

Philadelphia

Tue 8/12

1:15 pm-10:40 am

2 stops16h 25m

Porto

Sun 8/17

5:00 am-6:26 pm

2 stops18h 26m

$1,025

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 19 results

Compare providers for flights from Philadelphia to Porto

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Porto in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*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 $1,088). 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?

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?

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

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

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

Peruse reviews from past customers who have flown with Delta, KLM and SWISS 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

7,973 reviews

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

7,973 reviews

Delta

8.0

Very good

7,973 reviews

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

1,320 reviews

Delta

8.0

Very good

7,973 reviews

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

1,567 reviews

Delta

8.0

Very good

7,973 reviews

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.

United Airlines

7.4

Good

8,631 reviews

Delta

8.0

Very good

7,973 reviews

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.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,973 reviews

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

What are the cheapest airlines flying from Philadelphia to Porto round-trip?
According to our current data, SWISS ($525), United Airlines ($528), and Lufthansa ($547) offers the cheapest pricing from Philadelphia to Porto. SWISS is currently priced 35% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Philadelphia to Porto one-way?
$479 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Lufthansa and Air Canada, with prices starting from $483 and $492, 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 $1,088). 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

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Other flights to Porto

Top 4 airlines flying from Philadelphia to Porto

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$590	Average$872	FlexibilityNo cancel fee	On-time71%
Lufthansa	Cheapest$610	Average$816	FlexibilityNo cancel fee	On-time76%
United Airlines	Cheapest$658	Average$1,064	FlexibilityNo cancel fee	On-time69%
Iberia	Cheapest$669	Average$802	FlexibilityNo cancel fee	On-time77%

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$372+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Philadelphia to Porto with Cheapflights

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3. Compare prices and book

Cheap flight deals from Philadelphia to Porto

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Philadelphia to Porto

Cheapest flights from Philadelphia to PortoExplore 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 March 10, 2025.

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 March 10, 2025.

Find flights from Philadelphia to Porto within your budget

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 March.

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.

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?

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 March 10, 2025.

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.

Rainfall in Porto by month

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

Temperature in Porto by month

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

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 March 10, 2025.

Peruse reviews from past customers who have flown with Delta, KLM and SWISS 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.

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?

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

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

How can I find direct flights from Philadelphia to Porto?

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

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

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Alternative routes for Philadelphia to Porto

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Top 4 airlines flying from Philadelphia to Porto

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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 March 10, 2025.