$438 Cheap Flights from Charlotte (CLT) to Porto (OPO)

View $438 flight on Tue, Nov 4, 2025Opens in a new window

Popular airlines from Charlotte-Douglas Intl. Airport (CLT) to Porto Airport (OPO)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Charlotte to Porto (CLT-OPO)

Prices were available within the past 7 days and start at $438 for one-way flights and $586 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Nov 19 - Tue, Nov 25
CLT
Charlotte
OPO
Porto
$586 Roundtrip, found 2 days ago
$586
Roundtrip
found 2 days ago
Select United flight, departing Wed, Nov 19 from Charlotte to Porto, returning Tue, Nov 25, priced at $586 found 2 days ago
United
Sun, Feb 22 - Tue, Mar 10
CLT
Charlotte
OPO
Porto
$590 Roundtrip, found 2 days ago
$590
Roundtrip
found 2 days ago
Select United flight, departing Sun, Feb 22 from Charlotte to Porto, returning Tue, Mar 10, priced at $590 found 2 days ago
United
Sun, Feb 22 - Mon, Mar 9
CLT
Charlotte
OPO
Porto
$592 Roundtrip, found 2 days ago
$592
Roundtrip
found 2 days ago
Select United flight, departing Sun, Feb 22 from Charlotte to Porto, returning Mon, Mar 9, priced at $592 found 2 days ago
United
Tue, Nov 4 - Wed, Nov 12
CLT
Charlotte
OPO
Porto
$593 Roundtrip, found 1 day ago
$593
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 4 from Charlotte to Porto, returning Wed, Nov 12, priced at $593 found 1 day ago
United
Tue, Nov 4 - Wed, Nov 12
CLT
Charlotte
OPO
Porto
$597 Roundtrip, found 1 day ago
$597
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 4 from Charlotte to Porto, returning Wed, Nov 12, priced at $597 found 1 day ago
United
Sun, Nov 16 - Thu, Nov 27
CLT
Charlotte
OPO
Porto
$598 Roundtrip, found 4 days ago
$598
Roundtrip
found 4 days ago
Select United flight, departing Sun, Nov 16 from Charlotte to Porto, returning Thu, Nov 27, priced at $598 found 4 days ago
British Airways
Wed, Oct 29 - Wed, Nov 5
CLT
Charlotte
OPO
Porto
$604 Roundtrip, found 7 hours ago
$604
Roundtrip
found 7 hours ago
Select British Airways flight, departing Wed, Oct 29 from Charlotte to Porto, returning Wed, Nov 5, priced at $604 found 7 hours ago
Iberia
Wed, Dec 3 - Fri, Dec 12
CLT
Charlotte
OPO
Porto
$604 Roundtrip, found 8 hours ago
$604
Roundtrip
found 8 hours ago
Select Iberia flight, departing Wed, Dec 3 from Charlotte to Porto, returning Fri, Dec 12, priced at $604 found 8 hours ago
Lufthansa
Tue, Feb 24 - Tue, Mar 3
CLT
Charlotte
OPO
Porto
$605 Roundtrip, found 8 hours ago
$605
Roundtrip
found 8 hours ago
Select Lufthansa flight, departing Tue, Feb 24 from Charlotte to Porto, returning Tue, Mar 3, priced at $605 found 8 hours ago
Air Canada
Tue, Feb 24 - Tue, Mar 3
CLT
Charlotte
OPO
Porto
$608 Roundtrip, found 8 hours ago
$608
Roundtrip
found 8 hours ago
Select Air Canada flight, departing Tue, Feb 24 from Charlotte to Porto, returning Tue, Mar 3, priced at $608 found 8 hours ago

Find the cheapest month to fly from Charlotte (CLT) to Porto (OPO)

November is typically the cheapest month to fly

From $495 - $1,157 per traveler.

Graph displaying average flight prices per month

Flights from Charlotte (CLT) to Porto (OPO)
Origin airport
Charlotte-Douglas Intl.
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Iberia, KLM, Lufthansa, Swiss International Air Lines, United
Roundtrip price
$586
Distance
3830 mi

Charlotte to Porto Flights

The cheapest times to fly from Charlotte to Porto

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Charlotte to Porto are during the month of November. You can find some of the cheapest flights from Charlotte to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Charlotte to Porto

Sunday is one of the best days to book for cheap flights from Charlotte to Porto: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Charlotte to Porto

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Charlotte to Porto in 2025. You can also book with separate airlines for your outbound and return journeys, from $438 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Charlotte to Porto flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Charlotte to Porto airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Grab a cheap one-way flight from $438 or cheap return flight from $586 from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Planning your trip for November can help you save, as it's the cheapest month for flights between CLT and OPO. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from CLT to OPO. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Nonstop flights from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CLT to OPO?
Usually you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* However, this can change based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Book a flight from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Waiting until just before your departure to book your flight from CLT to OPO often results in higher prices. Although you may find some last-minute offers, they aren't always guaranteed. Be flexible with your travel plans to boost your chances of getting a bargain.
Is it cheaper to book a CLT to OPO flight and hotel package?
Compared with arranging flights and hotels separately, booking a CLT to OPO flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place takes the hassle out of planning your trip. Simply secure your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Charlotte-Douglas Intl. Airport (CLT) to Dr. Francisco de Sa Carneiro Airport (OPO)?
In most instances, you can cancel or modify your CLT to OPO flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you'd like more information, visit our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.