CHS - OPO

Find cheap flights from Charleston to Porto

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Charleston to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Charleston to Porto, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
Multiple Airlines
Sat 1/31
CHS - OPO • multi-stop
Cheapest one-way
Multiple Airlines
Sat 1/31
CHS - OPO • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Charleston to Porto (CHS-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Charleston to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Charleston to Porto

Multiple Airlines Logo
CHS
-
OPO
3863 mimulti-stop
Multiple Airlines Logo
OPO
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CHS
3863 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Charleston to Porto flights

Get data-powered insights and trends into flights from Charleston to Porto to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Charleston to Porto?

Percentage of 1-stop round-trip flights from Charleston to Porto chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

New York (JFK) is the top choice – 50% of KAYAK users who clicked on 1-stop flights from Charleston to Porto picked an itinerary connecting there.

What is the cheapest layover airport when flying from Charleston to Porto?

Average round-trip price for 1-stop flights from Charleston to Porto clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via New York (JFK) offer the most affordable fares, with an average round-trip price of $865.

Which layover airport offers the shortest total travel time from Charleston to Porto?

Shortest average total travel time for 1-stop one-way flights from Charleston to Porto via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Newark (EWR) for the shortest journey. The average one-way travel time for flights connecting there is 10h 20m.

Which layover airport has the quickest connection when flying from Charleston to Porto?

Average layover duration at different layover airports for 1-stop one-way flights from Charleston to Porto, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Newark (EWR) often has the shortest layovers from Charleston to Porto, with an average of 2h 28m.

Find deals

Good to know

Low seasonFebruary
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 15% lower on average.

When to book flights from Charleston to Porto

Are your dates flexible? Find out the best times to travel from Charleston to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Charleston to Porto

  • Do I need a passport to fly between Charleston and Porto?

    Yes, you’ll need a passport to travel to Porto from Charleston.

  • Which aircraft models fly most regularly from Charleston to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Charleston to Porto?

    SkyTeam is the only airline alliance operating flights between Charleston and Porto.

  • How does KAYAK find such low prices on flights from Charleston to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Charleston to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Charleston to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Charleston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Charleston to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Charleston with another airline. Booking your flights between Charleston and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Charleston to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Charleston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Charleston to Porto

 
See real verified KAYAK customer reviews for airlines flying from Charleston to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Charleston to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8130 reviews
7.8Entertainment
7.2Food
7.9Comfort
8.5Crew
8.1Boarding
Airline reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

2.0 MediocreTodd, Jan 2026
IAH - ATL
Read more Delta reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The flight was comfortable and uneventful, which is what I desire

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Everything you need to know for your flight from Charleston to Porto

Information on your arrival and departure airports

Charleston (CHS)
Porto (OPO)