Cheap Flights from Porto to Philadelphia from $1,487

Compare Porto to Philadelphia flight deals

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Flight deals from Porto to Philadelphia

Looking for a cheap last-minute deal or the best return flight from Porto Airport to Philadelphia? If you want to travel next month, return fares start from $1,493. Find the lowest prices on one-way and return tickets right here.

Philadelphia.$1,487 per passenger.Departing Wed, 2 Sep, returning Wed, 9 Sep.Return flight with United.Outbound indirect flight with United, departs from Porto on Wed, 2 Sep, arriving in Philadelphia International.Inbound indirect flight with United, departs from Philadelphia International on Wed, 9 Sep, arriving in Porto.Price includes taxes and charges.From $1,487, select.

Philadelphia.$1,488 per passenger.Departing Sat, 19 Dec, returning Sat, 2 Jan.Return flight with United.Outbound indirect flight with United, departs from Porto on Sat, 19 Dec, arriving in Philadelphia International.Inbound indirect flight with United, departs from Philadelphia International on Sat, 2 Jan, arriving in Porto.Price includes taxes and charges.From $1,488, select.

Philadelphia.$1,493 per passenger.Departing Thu, 11 Jun, returning Mon, 15 Jun.Return flight with United.Outbound indirect flight with United, departs from Porto on Thu, 11 Jun, arriving in Philadelphia International.Inbound indirect flight with United, departs from Philadelphia International on Mon, 15 Jun, arriving in Porto.Price includes taxes and charges.From $1,493, select.

Philadelphia.$1,494 per passenger.Departing Tue, 25 Aug, returning Sat, 12 Sep.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Porto on Tue, 25 Aug, arriving in Philadelphia International.Inbound indirect flight with Lufthansa, departs from Philadelphia International on Sat, 12 Sep, arriving in Porto.Price includes taxes and charges.From $1,494, select.

Philadelphia.$1,494 per passenger.Departing Tue, 13 Apr, returning Mon, 19 Apr.Return flight with United.Outbound indirect flight with United, departs from Porto on Tue, 13 Apr, arriving in Philadelphia International.Inbound indirect flight with United, departs from Philadelphia International on Mon, 19 Apr, arriving in Porto.Price includes taxes and charges.From $1,494, select.

Philadelphia.$1,672 per passenger.Departing Wed, 29 Jul, returning Sat, 12 Sep.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Porto on Wed, 29 Jul, arriving in Philadelphia International.Inbound indirect flight with TAP Air Portugal, departs from Philadelphia International on Sat, 12 Sep, arriving in Porto.Price includes taxes and charges.From $1,672, select.

Philadelphia.$1,728 per passenger.Departing Sun, 15 Nov, returning Thu, 19 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from Porto on Sun, 15 Nov, arriving in Philadelphia International.Inbound indirect flight with Delta, departs from Philadelphia International on Thu, 19 Nov, arriving in Porto.Price includes taxes and charges.From $1,728, select.

Philadelphia.$1,863 per passenger.Departing Thu, 13 Aug, returning Mon, 24 Aug.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Porto on Thu, 13 Aug, arriving in Philadelphia International.Inbound indirect flight with Air Canada, departs from Philadelphia International on Mon, 24 Aug, arriving in Porto.Price includes taxes and charges.From $1,863, select.

Philadelphia.$1,956 per passenger.Departing Fri, 10 Jul, returning Sun, 12 Jul.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Porto on Fri, 10 Jul, arriving in Philadelphia International.Inbound indirect flight with British Airways, departs from Philadelphia International on Sun, 12 Jul, arriving in Porto.Price includes taxes and charges.From $1,956, select.

Philadelphia.$1,977 per passenger.Departing Mon, 29 Jun, returning Sun, 5 Jul.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Porto on Mon, 29 Jun, arriving in Philadelphia International.Inbound indirect flight with TAP Air Portugal, departs from Philadelphia International on Sun, 5 Jul, arriving in Porto.Price includes taxes and charges.From $1,977, select.

Philadelphia.$2,123 per passenger.Departing Thu, 30 Jul, returning Sat, 8 Aug.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Porto on Thu, 30 Jul, arriving in Philadelphia International.Inbound indirect flight with British Airways, departs from Philadelphia International on Sat, 8 Aug, arriving in Porto.Price includes taxes and charges.From $2,123, select.

Find the cheapest month to fly from Porto to Philadelphia

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Porto to Philadelphia flights are currently cheapest in September.

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Alternative Porto to Philadelphia routes

Looking for the cheapest, fastest or easiest route from Porto to Philadelphia? You could fly into the following airports instead.

Porto to Philadelphia: Flight information

The things to know before you go.

Cheapest flight found	$1,489
Cheapest month to fly	September

Finding cheap flights from Porto to Philadelphia: Frequently asked questions

How many airports are there in Philadelphia?

There are 6 airports in Philadelphia: Philadelphia International, Blue Bell, Philadelphia Trenton-Mercer, Greater Wilmington, Atlantic City International, and Allentown.

How much are return flights from Porto to Philadelphia?

The best price we found for a return flight from Porto to Philadelphia is $1,487. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Porto to Philadelphia?

Currently, there are no airlines that fly direct from Porto to Philadelphia. But we found flights with one or more stops from $1,487.

How many flights are there a week from Porto to Philadelphia?

As of May 2026, there are no flights flying from Porto to Philadelphia.

When is the cheapest time to fly from Porto to Philadelphia?

The cheapest month to fly from Porto to Philadelphia is usually September.

Which is the cheapest airport to fly into in Philadelphia?

If you're flying from Porto Airport, the cheapest airport near Philadelphia is Philadelphia International – which is 11.2 km away from the centre of Philadelphia. We've found flights into this airport from $1,487.

Which upcoming date is cheapest to fly from Porto Airport to Philadelphia on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Porto Airport to Philadelphia on Wednesday, 2 September 2026.

Can I get a direct flight from Porto Airport to Philadelphia?

No airlines currently offer direct flights between Porto Airport and Philadelphia. Most routes have one or more stops.

How can I get the best flight deal from Porto Airport to Philadelphia?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Philadelphia but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Philadelphia?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Philadelphia is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Philadelphia?

In May, the average temperature is usually around 16°C. July is typically the warmest month in Philadelphia, when it usually averages around 30°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -5°C. The rainiest month is July.

Which is the cheapest airline to fly from Porto Airport to Philadelphia with?

Currently, United offers the cheapest flight tickets to Philadelphia.

Travelling from Porto Airport (OPO) to Philadelphia: what you need to know

The timezone in Philadelphia is UTC-5. The city is five hours behind Porto, where Porto Airport is located.
Give yourself plenty of time to make your OPO to Philadelphia flight. Generally, it's best to arrive at least two hours before international departures and an hour ahead for domestic flights.
You'll likely experience longer queues during popular months such as August. Arriving up to four hours in advance for an international flight and two hours for domestic departures will help ensure a smooth travel experience.
A stopover is the perfect opportunity to break up your journey and maybe even explore a different city. When browsing for plane tickets from OPO to Philadelphia, deselect the 'Direct flights only' box to see where you can visit along the way. Top options include:
- Newark Liberty International Airport (EWR)
- Adolfo Suarez Madrid-Barajas Airport (MAD)
- Toronto Pearson International Airport (YYZ)
OPO is about 11 kilometres from central Porto. If you're ride-sharing, driving or catching a taxi from the centre, it'll take 20 minutes or so to get there, depending on traffic. If you're planning to take public transport, expect the trip time to be around 30 minutes.
Want a hassle-free start to your travels? Stay near OPO. Whether you're boarding an early flight from Porto Airport to Philadelphia or just don't like being rushed, these hotels are all about convenience:
Of the flights that depart from Porto Airport, 75% arrive as scheduled at their destination.

How to find the cheapest flights from Porto Airport (OPO) to Philadelphia

$835 is the lowest price we've found for a one-way Porto Airport to Philadelphia flight. A return plane ticket right now is $1,487. Depending on the availability when you book, these fares could change.
Don't leave everything to the last minute. You're more likely to land cheap flights from OPO to Philadelphia if you book early. Airlines often offer some fantastic early bird deals.
The 'Whole month' tool will show you the cheapest tickets from Porto Airport to Philadelphia throughout the entire month. It's a good way to snap up a bargain if your travel plans are flexible.
Finding a cheap flight from OPO to Philadelphia is a breeze with Price Alerts. Simply create one of these automatic notifications and we'll get in touch as soon as a new discount appears.
Choose your ideal departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from Porto Airport to Philadelphia by 'Best,' 'Cheapest' or 'Fastest.'

Airports in Philadelphia

Philadelphia International Airport (PHL)

The distance from Philadelphia International Airport (PHL) to central Philadelphia is roughly 18 kilometres. It takes around 20 minutes to reach the centre driving.
When travelling on public transport, expect a journey time of about 30 minutes.
Think about booking a hotel near PHL if you're coming in on a late flight from Porto Airport to Philadelphia. Select one of these options and avoid the hassle of a long transfer:
To get the best deal, reserve your ride from Philadelphia International Airport around three weeks ahead of your flight from OPO to Philadelphia.
You'll find PHL at 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

After your flight from Porto Airport to Philadelphia has arrived, you can get to the city centre in around 40 minutes by car. Central Philadelphia is roughly 48 kilometres from Trenton-Mercer Airport (TTN).
The trip will take roughly 1 hour 35 minutes on public transport.
You'll find some comfortable places to park your luggage (and yourself) near TTN. Tuck yourself in and get cosy after your OPO to Philadelphia flight at one of these well-located options:
Call dibs on the best options. Booking your ride from TTN four weeks in advance often means better prices and a wider choice of vehicles.
You can find Trenton-Mercer Airport at Scotch Road, Terminal Building.

Best time to go to Philadelphia

December is the quietest month for flights from Porto Airport to Philadelphia, while July is the busiest. Choose the best time to go to Philadelphia based on whether you like a laid-back vibe or a lively atmosphere.
Before booking a Porto Airport to Philadelphia plane ticket, think about what kind of weather works for you. July is the warmest month in Philadelphia, with temperatures ranging from 18ºC to 32ºC.
January has average temperatures of between -7ºC and 9ºC. Search for a cheap ticket from OPO to Philadelphia around that time if you want to travel when it's cooler.

More about Philadelphia

After booking your flight from Porto Airport to Philadelphia, find a hotel that offers both comfort and a great location. Make one of these accommodation options your base for exploring Philadelphia:
All great journeys should include a little sightseeing. Liberty Bell, Independence Hall and Philadelphia Museum of Art are essential stops on your Philadelphia itinerary.

Explore more of the United States

New York is just one of the many cities in the United States waiting to be discovered once you've taken in the sights of Philadelphia. Around 129 kilometres away to the northeast, check out popular attractions including Central Park, Statue of Liberty and Metropolitan Museum of Art.
Boston is another favourite destination in the United States and is around 434 kilometres northeast of Philadelphia. No trip is complete without dropping by Museum of Fine Arts Boston, Freedom Trail and USS Constitution Museum.