$438 Cheap Flights from Dallas (DFW) to Porto (OPO)

View $438 flight on Wed, Oct 22, 2025Opens in a new window

Popular airlines from Dallas-Fort Worth Intl. Airport (DFW) to Porto Airport (OPO)

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Cheap Flights from Dallas to Porto (DFW-OPO)

Prices were available within the past 7 days and start at $438 for one-way flights and $529 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Sun, Nov 23 - Mon, Nov 24
DFW
Dallas
OPO
Porto
$529 Roundtrip, found 4 days ago
$529
Roundtrip
found 4 days ago
Select British Airways flight, departing Sun, Nov 23 from Dallas to Porto, returning Mon, Nov 24, priced at $529 found 4 days ago
British Airways
Mon, Nov 24 - Tue, Nov 25
DFW
Dallas
OPO
Porto
$582 Roundtrip, found 4 days ago
$582
Roundtrip
found 4 days ago
Select British Airways flight, departing Mon, Nov 24 from Dallas to Porto, returning Tue, Nov 25, priced at $582 found 4 days ago
United
Tue, Nov 11 - Tue, Nov 25
DFW
Dallas
OPO
Porto
$586 Roundtrip, found 4 days ago
$586
Roundtrip
found 4 days ago
Select United flight, departing Tue, Nov 11 from Dallas to Porto, returning Tue, Nov 25, priced at $586 found 4 days ago
United
Tue, Nov 11 - Thu, Nov 27
DFW
Dallas
OPO
Porto
$586 Roundtrip, found 1 day ago
$586
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 11 from Dallas to Porto, returning Thu, Nov 27, priced at $586 found 1 day ago
United
Sun, Mar 1 - Tue, Mar 17
DFW
Dallas
OPO
Porto
$590 Roundtrip, found 1 day ago
$590
Roundtrip
found 1 day ago
Select United flight, departing Sun, Mar 1 from Dallas to Porto, returning Tue, Mar 17, priced at $590 found 1 day ago
British Airways
Tue, Mar 17 - Thu, Apr 2
DFW
Dallas
OPO
Porto
$591 Roundtrip, found 6 days ago
$591
Roundtrip
found 6 days ago
Select British Airways flight, departing Tue, Mar 17 from Dallas to Porto, returning Thu, Apr 2, priced at $591 found 6 days ago
British Airways
Tue, Feb 3 - Wed, Feb 25
DFW
Dallas
OPO
Porto
$592 Roundtrip, just found
$592
Roundtrip
just found
Select British Airways flight, departing Tue, Feb 3 from Dallas to Porto, returning Wed, Feb 25, priced at $592 just found
American Airlines
Tue, Feb 3 - Wed, Feb 25
DFW
Dallas
OPO
Porto
$594 Roundtrip, just found
$594
Roundtrip
just found
Select American Airlines flight, departing Tue, Feb 3 from Dallas to Porto, returning Wed, Feb 25, priced at $594 just found
Iberia
Tue, Feb 3 - Wed, Feb 25
DFW
Dallas
OPO
Porto
$594 Roundtrip, just found
$594
Roundtrip
just found
Select Iberia flight, departing Tue, Feb 3 from Dallas to Porto, returning Wed, Feb 25, priced at $594 just found
Air Canada
Tue, Nov 25 - Tue, Dec 9
DFW
Dallas
OPO
Porto
$608 Roundtrip, found 11 hours ago
$608
Roundtrip
found 11 hours ago
Select Air Canada flight, departing Tue, Nov 25 from Dallas to Porto, returning Tue, Dec 9, priced at $608 found 11 hours ago

Find the cheapest month to fly from Dallas (DFW) to Porto (OPO)

November is typically the cheapest month to fly

From $493 - $1,172 per traveler.

Graph displaying average flight prices per month

Alternative airports near Porto

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Dr. Francisco de Sa Carneiro OPO. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $1,174
OPO
Dr. Francisco de Sa Carneiro
CheapestClosest
Average driving time to city center14 min
Flights from $1,174
Flights from Dallas (DFW) to Porto (OPO)
Origin airport
Dallas-Fort Worth 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, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$528
Distance
4692 mi

Dallas to Porto Flights

The cheapest times to fly from Dallas 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 Dallas to Porto are during the month of November. You can find some of the cheapest flights from Dallas to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Dallas to Porto

Sunday is one of the best days to book for cheap flights from Dallas 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 Dallas 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 Dallas 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 Dallas 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 Dallas 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 Dallas-Fort Worth Intl. Airport (DFW) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Get a cheap one-way flight from $438 or cheap return flight from $529 from Dallas-Fort Worth Intl. Airport (DFW) 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 offers on this route.
What is the cheapest month to fly from Dallas-Fort Worth Intl. Airport (DFW) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Traveling in November is a great way to save, as it's the cheapest month for flights between DFW and OPO. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Dallas-Fort Worth Intl. Airport (DFW) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from DFW to OPO. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Dallas-Fort Worth Intl. Airport (DFW) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Nonstop flights from Dallas-Fort Worth Intl. Airport (DFW) 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 select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DFW to OPO?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Dallas-Fort Worth Intl. Airport (DFW) to Dr. Francisco de Sa Carneiro Airport (OPO)?
To avoid possible delays on the Dallas-Fort Worth Intl. Airport (DFW) to Dr. Francisco de Sa Carneiro Airport (OPO) route, fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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 Dallas-Fort Worth Intl. Airport (DFW) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Waiting until right before your break to book a flight from DFW to OPO often results in higher prices. While you may find some last-minute deals, there's no guarantee. Be flexible with your itinerary to maximize your chances of landing a bargain.
Is it cheaper to book a DFW to OPO flight and hotel package?
Securing a DFW to OPO flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our wide range of hotels and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Dallas-Fort Worth Intl. Airport (DFW) to Dr. Francisco de Sa Carneiro Airport (OPO)?
It's generally possible to reschedule or cancel your DFW to OPO flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.