What is the cheapest airline to fly from Charleston to Porto round-trip?

Our cheapest airline available from Charleston to Porto is Delta. Our recent data shows that you can find tickets from as low as $716 on this airline. Users have found that Delta is 27% cheaper than the other options available to this destination.

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.

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).

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

When flying from Charleston to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Charleston-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Charleston-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Charleston-Porto flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Charleston-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 Charleston-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 Charleston to Porto that include hotel bookings?

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

How can I find direct flights from Charleston to Porto?

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

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

Yes. Cheapflights offers flight deals from Charleston 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.

Find Flights from Charleston to Porto

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Find flight deals from Charleston to Porto

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	September
Cheapest in	February

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

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

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Highest demand for flights based on searches. 6% potential increase in price ($64 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).

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Most accurate provider: When it comes to deals on Charleston-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Charleston-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Charleston-Porto flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Charleston-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 Charleston-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 Charleston to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Charleston 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.

Reviews of airlines servicing Porto

Get a feel of what it's like to fly with Delta from Charleston to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,128 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

8,128 reviews

Delta

7.9

Good

8,128 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

What is the cheapest airline to fly from Charleston to Porto round-trip?
Our cheapest airline available from Charleston to Porto is Delta. Our recent data shows that you can find tickets from as low as $716 on this airline. Users have found that Delta is 27% cheaper than the other options available to this destination.
Can I find deals for flights from Charleston to Porto that include hotel bookings?
Yes. In addition to deals on Charleston to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Charleston to Porto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Charleston to Porto.
Can I find deals for business class flights from Charleston to Porto?
Yes. Cheapflights offers flight deals from Charleston 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.

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Top airline flying from Charleston to Porto

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$716	Average$933	FlexibilityNo cancel fee	On-timeN/A

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Cheap flights from Charleston (CHS) to Porto (OPO)

Find cheap flights from Charleston to Porto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Charleston to Porto

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Best time to book a flight from Charleston to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Charleston with our price prediction graph.

Reviews of airlines servicing Porto

Get a feel of what it's like to fly with Delta from Charleston to Porto by reading reviews from past customers. 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 Charleston to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What is the cheapest airline to fly from Charleston to Porto round-trip?

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

How can I find direct flights from Charleston to Porto?

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

Traveling to a place near Porto?

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Top airline flying from Charleston to Porto

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