OPO

$286 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 10/2. 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

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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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

Mon, Oct 20 - Wed, Nov 5
United Airlines Logo
7:00 am - 9:45 amDFW-OPO
20h 45m1 stop
United Airlines Logo
12:35 pm - 11:59 pmOPO-DFW
17h 24m1 stop
$535United Airlines
Find Deal
Mon, Mar 9 - Tue, Mar 17
United Airlines Logo
5:35 pm - 9:30 amDFW-OPO
10h 55m1 stop
United Airlines Logo
6:00 am - 8:04 pmOPO-DFW
19h 04m2 stops
$540United Airlines
Find Deal
Tue, Mar 3 - Wed, Mar 11
United Airlines Logo
1:10 pm - 9:30 amDFW-OPO
14h 20m2 stops
United Airlines Logo
6:00 am - 10:40 pmOPO-DFW
21h 40m2 stops
$544United Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 16
Iberia Logo
1:55 pm - 11:45 amDFW-OPO
15h 50m1 stop
Iberia Logo
8:20 am - 9:35 pmOPO-DFW
19h 15m2 stops
$554Iberia
Find Deal
Tue, Dec 2 - Tue, Dec 16
Iberia Logo
5:35 pm - 4:00 pmDFW-OPO
16h 25m2 stops
Iberia Logo
8:20 am - 9:35 pmOPO-DFW
19h 15m2 stops
$558Iberia
Find Deal
Tue, Dec 2 - Tue, Dec 16
British Airways Logo
1:55 pm - 7:40 amDFW-OPO
11h 45m1 stop
British Airways Logo
8:20 am - 4:30 pmOPO-DFW
14h 10m1 stop
$564British Airways
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Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
2:55 pm - 4:00 pmDFW-OPO
20h 05m1 stop
American Airlines Logo
8:20 am - 11:25 pmOPO-DFW
21h 05m2 stops
$604American Airlines
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Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
12:19 pm - 7:40 amDFW-OPO
14h 21m2 stops
American Airlines Logo
8:20 am - 7:28 pmOPO-DFW
17h 08m2 stops
$608American Airlines
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Wed, Nov 19 - Fri, Nov 28
Delta Logo
8:45 am - 10:30 amDFW-OPO
19h 45m2 stops
Delta Logo
6:30 am - 10:58 pmOPO-DFW
22h 28m2 stops
$617Delta
Find Deal
Tue, Mar 3 - Wed, Mar 11
Delta Logo
12:01 pm - 10:30 amDAL-OPO
16h 29m2 stops
Delta Logo
6:00 am - 10:36 pmOPO-DAL
21h 36m2 stops
$667Delta
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $535 (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 39% compared to booking last minute.
Insights
Insights
Insights
Insights
Cheapest round-trip
$535
Typical prices: $619-900
United Airlines
Mon 10/20Wed 11/5
DFW - OPO • 1 stop
Cheapest one-way
$286
Typical prices: $490-499
Multiple Airlines
Thu 10/2
DFW - OPO • 2 stops
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!
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?

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.

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 January, where tickets cost $507 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,116 and $1,063 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 39% 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$286
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 $286 for a one-way ticket and $535 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 Love Field.

  • 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 5 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 7954 reviews
7.9Comfort
7.3Food
8.5Crew
7.9Entertainment
8.2Boarding
Airline reviews

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

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

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

Nothing special. The crew never went out of their way for anything.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

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.

A little bit more leg room in premium economy. I am 6’4”.

Overall it was good. I missed my connection but I was put on another flight.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Gate agent did not hold flight for connection, provided no assistance to get new flight

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Our bags took a long time to get unloaded once we landed.

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

My Internet did not work for Outlook email or basically anything. I paid for one hour of in-flight usage and it was terrible. I spent a lot of time on different sites and browsers with no luck and a lot of frustration. Other than that, the flight was on time, crew was nice, service was fine. Seat was OK even though I paid for the extra 6 inches. I cannot imagine how tight the seats in the back must be.

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

No issues. They did change our gate FOUR times in about 30 minutes which was mildly annoying but the flight was fine.

Crew should be nicer and emphatic with customers. Same cookies as the past 20 years. Seat are ok and the plane was clean though it was delayed.

Very poor delay in dfw was really bad n long

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

It was fortunate that the flight arrived in London in accordance with schedule, and the luggage was promptly transferred to the luggage carousel. However, I find it concerning that even minor issues in economy cabins are prevalent within the industry. American Airlines, in particular, appears to have the least legroom and feels more crowded due to the proximity of neighboring passengers. Additionally, the crew’s adherence to protocol is inconsistent. While they may enforce certain rules set by the FAA on a select few individuals, they often overlook numerous violations, such as failing to reset seat recline during landing.

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

The crew were not very personable. The crew did not serve tea or coffee. The bathroom was not kept clean. Two out of the 5 toilets in the cabin weren't working.

It was extremely cold in the back of the plane. The seats are uncomfortable and space very small. Crew was excellent as usual.

Check in needed to be in person, not nice. Also I won’t do connections in Charlotte again because you need to go through security again and short connections become a problem

Iberia lost my bag, said they found it in another country, said they sent it to me, but never did. Went my whole trip without my stuff, but expecting it to show up because that’s what they said would happen. Their communication sucks, their website sucks, and to top it all off, their seats are small and uncomfortable. They’re bad at their jobs and they should feel bad about themselves. Do not even get me started on the flight home. AVOID!

I described my experience in the previous window. I didn't realize that there would be another opportunity for this flight. Please look at my response in the previous window.

Boarding was 2 1/2 late no explanation Captain said he did not know why, but he rested at home for an extra couple of hours. Food was edible, Nothing more.

I liked the comfort of the plane. It was unexpected from past experiences.

BEWARE!!! Iberia changes your seats at random. I paid for a window seat and they changed it to one in the middle aisle resting against the bathroom- can’t lean back + hear every flush. This on a 11 hour flight.. There were families that were broken up with separate seats all over the plane. Lots of upset passengers showing their seat confirmation to the besieged and helpless airline steward. Also, the gluten free meal was tasteless.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Three major things that led to my low rating, 1. Internet wasn't available for the whole time, and 2. TV became available way into flight, after numerous system reboots, and 3. Food is not good at all.

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Didn’t fly with them as someone had cancelled my flight

Some how my flight was canceled, neither BA or Justfly.com accepted responsibility. I only found out about this the day before when I tried to check in. I had to book another flight which due to the time ( day before) cost me $300 more. I was still receiving notifications about the flight even when I was on another flight from you. So no my flight to London was not good.

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

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

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