OPO

$347 Find Cheap Flights from Dallas to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dallas to Porto departing on 2/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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 Dallas 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 Dallas to Porto, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$561
Typical prices: $606-$1,004
Multiple Airlines
Sat 3/7Sun 3/15
DFW - OPO • 1 stop
Cheapest one-way
$347
Multiple Airlines
Fri 2/20
DFW - OPO • 2 stops
Top airlines
United Airlines
Cheapest • from $591 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 44% compared to booking last minute.
Insights
Insights
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We hope you love your trip to Porto!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dallas to Porto

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dallas 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 Dallas to Porto

Sat, Mar 7 - Sun, Mar 15
Multiple Airlines Logo
1:36 pm - 1:10 pm
DFW
-
OPO
17h 34m
1 stop
Multiple Airlines Logo
6:35 pm - 9:20 pm
OPO
-
DFW
31h 45m
2 stops
$561Multiple Airlines
Sun, Apr 19 - Tue, Apr 28
United Airlines Logo
7:00 am - 9:45 am
DFW
-
OPO
20h 45m
2 stops
United Airlines Logo
6:00 am - 10:59 pm
OPO
-
DFW
22h 59m
2 stops
$591United Airlines
Sun, Mar 1 - Thu, Mar 12
United Airlines Logo
7:10 am - 9:30 am
DFW
-
OPO
20h 20m
2 stops
United Airlines Logo
12:35 pm - 11:11 am
OPO
-
DFW
27h 36m
2 stops
$600United Airlines
Sat, Mar 7 - Sun, Mar 15
Multiple Airlines Logo
2:24 pm - 1:10 pm
DFW
-
OPO
16h 46m
2 stops
Multiple Airlines Logo
6:35 pm - 9:20 pm
OPO
-
DFW
31h 45m
2 stops
$602Multiple Airlines
Sun, Apr 19 - Tue, Apr 28
Iberia Logo
8:49 am - 7:40 am
DFW
-
OPO
16h 51m
2 stops
Iberia Logo
12:25 pm - 8:10 pm
OPO
-
DFW
13h 45m
1 stop
$603Iberia
Sun, Mar 1 - Thu, Mar 12
Iberia Logo
1:55 pm - 7:40 am
DFW
-
OPO
11h 45m
1 stop
Iberia Logo
12:25 pm - 7:35 am
OPO
-
DFW
24h 10m
2 stops
$608Iberia
Mon, Mar 23 - Mon, Mar 30
Lufthansa Logo
5:15 pm - 2:55 pm
DFW
-
OPO
16h 40m
1 stop
Lufthansa Logo
4:35 pm - 2:15 pm
OPO
-
DFW
27h 40m
1 stop
$612Lufthansa
Mon, Mar 23 - Mon, Mar 30
Scandinavian Airlines Logo
3:59 pm - 9:35 am
DAL
-
OPO
36h 36m
2 stops
Scandinavian Airlines Logo
11:50 am - 10:45 pm
OPO
-
DAL
40h 55m
2 stops
$758Scandinavian Airlines
Mon, Mar 30 - Thu, Apr 16
KLM Logo
6:40 pm - 5:55 pm
DAL
-
OPO
17h 15m
2 stops
KLM Logo
5:55 am - 5:50 pm
OPO
-
DAL
17h 55m
2 stops
$874KLM
Tue, Feb 10 - Thu, Feb 19
KLM Logo
6:38 pm - 3:25 pm
DAL
-
OPO
14h 47m
2 stops
KLM Logo
5:00 am - 5:49 pm
OPO
-
DAL
18h 49m
2 stops
$881KLM
Booking Insights

KAYAK's insights & trends for Dallas to Porto flights

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

How much is a round-trip flight from Dallas to Porto?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Dallas to Porto departing in March.

What is the cheapest month to fly from Dallas to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Dallas to Porto, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Dallas to Porto is December, where tickets cost $618 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,117 and $1,073 respectively.

How far in advance should I book a flight from Dallas to Porto?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Dallas to Porto, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Dallas to Porto, you should book around 4 weeks before departure, which saves you about 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Cheapest flight$347
Flight from Dallas/Fort Worth Airport to Porto

When to book flights from Dallas to Porto

Are your dates flexible? Find out the best times to travel from Dallas 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 Dallas to Porto

  • What is the cheapest flight from Dallas to Porto?

    In the last 3 days, the lowest price for a flight from Dallas to Porto was $347 for a one-way ticket and $561 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Dallas and on arrival in Porto.

  • Which airports will I be using when flying from Dallas to Porto?

    Dallas has 2 major airports: Dallas Love Field and Dallas/Fort Worth. Porto is the only airport in Porto. You’ll usually find the cheapest deals if you fly from Dallas/Fort Worth Airport.

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

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

  • Which airline alliances offer flights from Dallas to Porto?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Dallas and Porto, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Porto from Dallas?

    Madrid is the most popular layover city among KAYAK users traveling from Dallas to Porto.

  • How does KAYAK find such low prices on flights from Dallas 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 Dallas to Porto.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Dallas 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 Dallas 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 Dallas with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Dallas 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 Dallas up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Dallas to Porto

 
See real verified KAYAK customer reviews for airlines flying from Dallas 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 Dallas 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 8124 reviews
7.8Entertainment
7.2Food
8.5Crew
7.9Comfort
8.1Boarding
Airline reviews

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.

10.0 ExcellentDr. Simon, Jan 2026
LAX - JFK
Read more Delta reviews

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

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

Delayed, toilets did not flush, pilot parked to far away from Gate

I like flying first class, and United has a nice one

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

Crew was excellent. This was a relatively long flight though and had very little leg room, and no entertainment.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Concern Regarding Significant Gate Delay and Jet Bridge Issue Dear Customer Relations Team, I am writing to express my disappointment with the experience I had on my recent flight AA 2414 on Sunday January 18, 2026. What should have been a routine departure turned into a frustrating and avoidable delay due to an issue with the jet bridge at the gate. As a result, the flight was delayed by approximately 90 minutes while multiple gate changes were attempted. The lack of clear communication during this period made the situation even more challenging. Passengers were left uncertain about the cause of the delay, the expected timeline, and the next steps. This not only disrupted travel plans but also created unnecessary stress for everyone on board. I understand that operational issues can arise, but a malfunctioning jet bridge and the resulting extended delay suggest an area where procedures or equipment maintenance may need attention. I hope you will review this incident to prevent similar disruptions in the future. I would appreciate acknowledgment of this concern and consideration of appropriate compensation for the inconvenience and lost time caused by this delay. Thank you for taking the time to review my experience. I look forward to hearing from you. Sincerely, Dion Dillard

The seat cushions were very worn so they were extremely uncomfortable.

Delayed, no updates, had a rewards number but was not working

AA should improve their in air internet & entertainment options. Seems unreasonable to charge $20/hr and should have some form of free connections. The entertainment options are also pretty limited, movies are outdated and the series only show 3-5 episodes.

The professionals have excellent customer service, the seats don´t have enough space.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

Seats were much more cramped then on the 737. Narrower and rows closer together. Flight was absolutely packed and the plugs under the seats didn't work. Was forced to check my bag even though previous flight had no issue with it.

Plane delayed due to weather. Plane boarded, then told to unboard due to a maintenance issue.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Everything went smoothly, and we even arrived 40min earlier than scheduled, on an Orland-Madrid route.

The staff was very nice and helpful. Some of the best crew I have met.

Suddenly, I don't find my flight back on the app Help Ticket 0757345716866 Hoeflich Flight back Sunday ib5333 Ib2629 Ib4268

Was all good.l including a sofdrink. AA improved significantly. There was no entertainment.

Flight cancelled, lost a day of travel where we were trying to meet friends we couldn't meet. Iberia website is very difficult to navigate and has lots of dead links. If you do not speak Spanish it is even harder. Tried communicating on their WhatsApp and that was also close to impossible. We were told we'd be compensated 150EU's for this cancelled flight but there is no avenue towards rectifying this issue. I've had to take it up with my credit card to contest the charges and not pay for a flight that didn't happen but doubt I will ever be reimbursed for my two Ubers to the airport where we never even departed or the 150EU's we were told we would receive. I would never fly Iberia again. Clown show.

The food on the flight was of marginal quality. Small bits of chicken, instant mashed potatoes and some carrots. The rolls were very dry, nearly inedible. The seats were quite small and didn’t allow for any shifting of position during the flight. There was limited leg room.0

The seats are so small that you can barely move at all. Don't try to eat with utensils in your seat either - you will elbow your neighbor in the face. Miserably small and I swear they are shrinking every time I fly. Food was meh (per usual), but at least there is free alcohol on an overseas flight. Doesn't make up for sitting in a torture chamber while hurtling through the air with hundreds of fussy people, but it's something. Entertainment options (movies, shows) are okay, nothing special, but at least there are screens, because most of the seats in these large planes do not have adjustable lighting - or air control - that you can get to, it's too high to reach - which makes reading impossible. Zero stars, AA.

Disaster. Downgraded. Zero apology. No effort or coordination between gate and crew. Awful seat blocked by door emergency slide box. Iberia is a mess. App never works. Avoid this airline.

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

Information on your arrival and departure airports