CHS - OPO

Find cheap flights from Charleston to Porto

1 adult
1 adult, Economy

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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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-CHS
3863 mimulti-stop
Multiple Airlines
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Everything you should know

Cheapest round-trip
Multiple Airlines
Wed 9/17
CHS - OPO • multi-stop
Cheapest one-way
Multiple Airlines
Wed 9/17
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!
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).

Newark (EWR) is the top choice – 75% 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 Boston (BOS) offer the most affordable fares, with an average round-trip price of $1,230.

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 13m.

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 11m.

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Good to know

Most popular time to fly and prices are also 10% 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.

  • 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 7957 reviews
7.9Comfort
8.5Crew
7.3Food
7.9Entertainment
8.2Boarding
Airline reviews

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

8.0 ExcellentAnonymous, Sep 2025GFK - MSP
Read more Delta reviews

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

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

Information on your arrival and departure airports

Charleston (CHS)
Porto (OPO)

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