OPO

$244 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 3/2. 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
$582
United Airlines
Tue 3/17Tue 3/31
DFW - OPO • 1 stop
Cheapest one-way
$244
Typical prices: $525-$652
Multiple Airlines
Mon 3/2
DFW - OPO • 3 stops
Top airlines
United Airlines
Cheapest • from $582 (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 43% compared to booking last minute.
Insights
Insights
Insights
Insights
Start a new search
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 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

Tue, Mar 17 - Tue, Mar 31
United Airlines Logo
5:20 pm - 9:30 am
DFW
-
OPO
11h 10m1 stop
United Airlines Logo
6:00 am - 2:49 pm
OPO
-
DFW
38h 49m2 stops
$582United Airlines
Wed, Jan 28 - Wed, Feb 4
Multiple Airlines Logo
1:30 pm - 10:30 am
DFW
-
OPO
15h 00m2 stops
Multiple Airlines Logo
5:00 am - 5:56 pm
OPO
-
DFW
18h 56m2 stops
$584Multiple Airlines
Tue, Mar 17 - Tue, Mar 31
United Airlines Logo
9:55 am - 9:30 am
DFW
-
OPO
18h 35m2 stops
United Airlines Logo
6:00 am - 2:49 pm
OPO
-
DFW
38h 49m2 stops
$586United Airlines
Tue, Jan 13 - Tue, Jan 20
KLM Logo
3:55 pm - 10:30 am
DFW
-
OPO
12h 35m1 stop
KLM Logo
9:55 am - 12:27 am
OPO
-
DFW
20h 32m2 stops
$587KLM
Sun, Jan 18 - Mon, Feb 2
Multiple Airlines Logo
3:45 pm - 4:40 pm
DFW
-
OPO
18h 55m1 stop
Multiple Airlines Logo
8:40 pm - 5:30 am
OPO
-
DFW
14h 50m1 stop
$588Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
12:20 pm - 12:05 pm
DFW
-
OPO
17h 45m2 stops
Multiple Airlines Logo
6:00 am - 9:32 pm
OPO
-
DFW
45h 32m2 stops
$589Multiple Airlines
Wed, Jan 28 - Wed, Feb 4
Iberia Logo
5:30 pm - 11:45 am
DFW
-
OPO
12h 15m1 stop
Iberia Logo
8:40 pm - 5:30 am
OPO
-
DFW
14h 50m1 stop
$590Iberia
Tue, Mar 17 - Tue, Mar 31
Iberia Logo
6:20 pm - 8:00 pm
DFW
-
OPO
20h 40m1 stop
Iberia Logo
12:25 pm - 8:10 pm
OPO
-
DFW
13h 45m1 stop
$594Iberia
Sun, Jan 18 - Mon, Feb 2
Multiple Airlines Logo
1:18 pm - 12:05 pm
DFW
-
OPO
16h 47m2 stops
Multiple Airlines Logo
1:45 pm - 6:21 pm
OPO
-
DFW
34h 36m2 stops
$600Multiple Airlines
Sun, Jan 18 - Mon, Feb 2
KLM Logo
11:51 am - 10:30 am
DFW
-
OPO
16h 39m2 stops
KLM Logo
11:25 am - 1:50 pm
OPO
-
DFW
32h 25m1 stop
$604KLM
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.

What’s the cheapest day of the week to fly from Dallas to Porto?

The average price of all round-trip flights from Dallas to Porto clicked on KAYAK for each day over the last 12 months.

For Dallas to Porto, Tuesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Porto back to Dallas, the best deals are generally found on Sunday, with Saturday being the most expensive.

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 43% 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$244
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 $244 for a one-way ticket and $582 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 8010 reviews
8.5Crew
7.9Entertainment
7.3Food
7.9Comfort
8.1Boarding
Airline reviews

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

10.0 ExcellentMargaret, Dec 2025
BOS - PIT
Read more Delta reviews

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

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.

Flight was delayed and missed my connection Lufthansa didn’t respond.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

Attendants were pleasant and the flight was smooth and relaxed.

It was fine. No drinks nor snacks offered though. I thought that was unusual.

Things were delayed a little. But that didn’t affect my plans. It was fine. I was surprised it was so full thanksgiving day. The crew were friendly and professional.

The flight was delayed multiple times, again no fault of American but again the extra cost, for everything makes it feel like a cheap airline! Especially when flights are outrageously expensive already

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

I have a gluten allergy so did have any food

We were very rushed by a staff member at the gate when transferring from American Airlines to Fijian. Then the plane stayed put for ages anyhow! The plane was delayed and my bag sent to San Francisco instead of Fiji

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

The only thing to like was that we eventually got to our destination

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