$174 Find Cheap Flights from Dallas to Portugal - Compare and Save

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 Portugal departing on 8/28. 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

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Cheap Flights from Dallas to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$798
Porto
Porto1 stop$823
Faro
Faro2 stops$907
Ponta Delgada
Ponta Delgada1 stop$811
Funchal
Funchal1 stop$862
Lajes
Lajes2 stops$978
Lisbon
Lisbon1 stop$798
Porto
Porto1 stop$823
Faro
Faro2 stops$907
Ponta Delgada
Ponta Delgada1 stop$811
Funchal
Funchal1 stop$862
Lajes
Lajes2 stops$978

Book Cheap Dallas to Portugal Plane Tickets

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

Sun, Oct 11 - Thu, Oct 22
Air Canada Logo
12:25 pm - 9:20 am
DFW
-
LIS
14h 55m
1 stop
Air Canada Logo
11:25 am - 9:34 pm
LIS
-
DFW
16h 09m
1 stop
$798Air Canada
Mon, Oct 12 - Fri, Oct 23
Air Canada Logo
12:25 pm - 9:20 am
DFW
-
LIS
14h 55m
1 stop
Air Canada Logo
11:25 am - 9:34 pm
LIS
-
DFW
16h 09m
1 stop
$798Air Canada
Tue, Oct 6 - Tue, Oct 20
Delta Logo
11:47 am - 2:55 pm
DFW
-
LIS
21h 08m
2 stops
Delta Logo
5:00 am - 5:45 pm
LIS
-
DFW
18h 45m
2 stops
$799Delta
Sat, Sep 26 - Fri, Oct 9
United Airlines Logo
5:00 pm - 8:20 am
DFW
-
LIS
33h 20m
1 stop
United Airlines Logo
5:05 am - 1:35 pm
LIS
-
DFW
14h 30m
1 stop
$800United Airlines
Sat, Oct 3 - Tue, Oct 13
United Airlines Logo
5:00 pm - 8:20 am
DFW
-
LIS
33h 20m
1 stop
United Airlines Logo
5:05 am - 1:35 pm
LIS
-
DFW
14h 30m
1 stop
$800United Airlines
Sat, Oct 24 - Sat, Oct 31
Iberia Logo
7:26 pm - 12:50 pm
DFW
-
LIS
35h 24m
2 stops
Iberia Logo
6:45 pm - 6:30 am
LIS
-
DFW
16h 45m
1 stop
$801Iberia
Sat, Sep 26 - Thu, Oct 15
Delta Logo
4:25 pm - 5:50 pm
DFW
-
LIS
19h 25m
2 stops
Delta Logo
5:35 am - 1:35 pm
LIS
-
DFW
14h 00m
1 stop
$801Delta
Sun, Jan 3 - Sun, Jan 17
Multiple Airlines Logo
11:15 am - 9:00 am
DFW
-
LIS
15h 45m
1 stop
Multiple Airlines Logo
11:15 am - 10:03 pm
LIS
-
DFW
16h 48m
2 stops
$802Multiple Airlines
Sun, Oct 18 - Sun, Oct 25
Multiple Airlines Logo
12:25 pm - 11:05 am
DFW
-
LIS
16h 40m
2 stops
Multiple Airlines Logo
5:00 am - 3:25 pm
LIS
-
DFW
15h 25m
1 stop
$804Multiple Airlines
Wed, Oct 21 - Sun, Oct 25
Iberia Logo
9:45 pm - 11:25 pm
DFW
-
LIS
19h 40m
1 stop
Iberia Logo
7:45 am - 7:40 am
LIS
-
DFW
28h 55m
2 stops
$832Iberia
Booking Insights

KAYAK's insights & trends for Dallas to Portugal flights

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

What is the cheapest month to fly from Dallas/Fort Worth Airport to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Dallas/Fort Worth Airport to Portugal, 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/Fort Worth Airport to Portugal is February, when tickets cost $637 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $1,066 and $1,037 respectively.

How far in advance should I book a flight from Dallas/Fort Worth Airport to Portugal?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Dallas/Fort Worth Airport to Portugal, 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/Fort Worth Airport to Portugal, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low season

January

Cheapest flight

$174
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 22% increase in price.
Flight from Dallas to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Dallas to Portugal?

    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 Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Dallas to Portugal 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 Portugal?

    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 from Dallas to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Dallas to Portugal?

    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 from Dallas to Portugal 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 Portugal

 
Need help choosing which airline to fly with from Dallas to Portugal? 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.
7.6
FinnairOverall score based on 1427 reviews
8.2Crew
7.4Comfort
7.7Boarding
6.9Entertainment
6.7Food
Airline reviews

Awful. Delayed for unknown reason. Boarded late, part of a Tight connection ands had to go through customs and immigration. And they lost my bags.

2.0 MediocreAnonymous, Jul 2026
DFW - DEN
Read more Finnair reviews

Awful. Delayed for unknown reason. Boarded late, part of a Tight connection ands had to go through customs and immigration. And they lost my bags.

The seats are very uncomfortable. They never have tomato juice. Usually late

Finnair was not able to get our luggage on a connecting flight and there was a substantial delay of two days to obtain our lugguage. They did not communicate well, and we had to travel a significant distance to finally get our luggage. It has been a very negative experience.

Comfort. Not good very little space after the person in front of you lay back.

Business seating is soooo uncomfortable. You can sit straight up or lay down. You need pillows behind you because the back doesn’t lay down. Those are need to “prop” you up. The chair has no padding whatsoever. Food was gross. I’ve eaten on Finnair before and the food was exceptional. This time it gave 2 people in our party diarrhea. It was the chicken dish. I took 2 bites and didn’t eat anything more. The flight attendants were nice. You needed an additional lounge in Terminal D at DFW Airport. After waiting 40 minutes to enter, we finally gave up and went to a bar across from the club doors. I’m unsure if I’ll ever book a Finnair flight again.

It was a good flight, very comfortable seats for sleeping in business class. Probably the most comfortable business class seat I've ever had (20+ times in business class on various airlines). Service was good, but the only downside is my screen didn't work and it had to be reset multiple times to get it to shut off. I had to block my eyes because the screen was white almost the entire flight and I wore an eye mask when I slept. But when eating and reading in my seat, my eyes hurt because the only way to turn the screen off was reset it and the screen would only be off for a few minutes at a time.

Everything was wonderful! AirBus seats are more comfortable to sleep in as compared to the Boeing planes.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

The plane was warm and stuffy. The crew was friendly but got 2 orders wrong. I asked for sparkling water and wine with dinner and got neither. I asked for black coffee with breakfast and got coffee with cream. Service was so slow on my side of the plane they ran out of 2 of the 3 desserts at dinner and I was in row 12.

It was terribly delayed with zero support from united airlines. I reached at 1 am in the night. They did not provide any option to change the flights.

Flight cancelled instead of leaving Friday am now, maybe, leaving Sunday

one of the flight attendants on the Dallas to frankfurt leg was somewhat rude..

Friendliest Flight Attendant I’ve seen since I flew on Southwest Airlines. The whole trip was outstanding…and arrived Early!

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

Sucks ! All three flights I was on this trip were delayed.

When I got our tickets, my husband and I were easily able to get seats together (including a window seat). When we checked in at the airport all the seats were reset and we had to pick new ones, so we couldn’t sit together because there were only middle seats! Ugh that’s the worst. We were back so far we had to check our carry ons which was annoying because I bring an expensive camera that I don’t/cant check so I had to reorganize my items. Once we were seated on the plane we had to wait an hour to take off and they said there was some weather/air traffic in Denver but it was unclear. The lady I sat next to complained that our seats didn’t go back and we both got free complimentary snack boxes which were quite good. I wasn’t going to say anything about the seats, they were the typical uncomfortable kind. It would have been fine if the 2 hr flight hadn’t turned into 3 hrs. Not the best flight but also not the worst.

Food wasn’t very good, old business seating configuration on an old A340

Crew is way too many times on the intercom re explaining the same thing

Nothing. I flew business class. I always try to avoid air Canada because it’s the worst airline and it’s proven on international level. Sad and embarrassing…

Horrible. No AC. No Air inside the plane. We had to deplane twice! It is late almost 5 hrs in total. I almost passed out and about to call 911. I asked the crew to be honest and open the door. The lady next to me was lay down in the floor due to heat and no air inside the plane. I got headaches, can’t wait the replacement flight about midnight Dallas time. I end it up rebook for next day flight and stay overnight using my own pocket in a hotel nearby due to headaches and can’t breath. I still have a headache this morning. Still not decided yes how to file this issue to AA and/or FAA.

Worst communication. Delayed boarding for two hours without a single announcement until hour 1 had passed - on time status showing until our flight was supposed to takeoff and the crew had already walked away. No one was boarding. Disgusting part of DFW overcrowded with no AC on a 97 degree day. Then the first app update is that we’d take off in 15 mins… but again no one had boarded a full flight. No announcement in the terminal so everyone is just crowded around a disgusting place with no info for over an hour which turned into two. This was an overfill flight and a disgrace to passenger decency all while likely just trying to fix their own issue of overbooking. The worst airline at the worst airport.

The flight was delayed almost three hours. I understand delays happen from time to time, but this flight was delayed no less than 10 times. I wish the amount of time of the delay was more accurate, versus delaying in 10 or 20 minute increments many, many times.

boarding announcements werent clear/loud. Tired of those cookies. Of the 3 staff/attendants, 1 was good and the other 2 were mediocre.

the seat was not padded at all - uncomfortable after a 3 hour flight

This flight was of course delayed because American cannot have flights that are not delayed.

I sat at the airport all night from 8 pm until midnight. The airline kept delaying the flight. They also kept moving us to different gates - 4 times. Then they told us we didn’t have a pilot so we had to wait. Then they cancelled the flight at midnight! I ended up having to rent a car to drive home. So i ended up not even being able to fly on the flight i paid for. Ridiculous, and no agents could help at all. I will not ever book this flight.

Mechanical delay > Crew Time out. No communication to passengers. Crew time out was positioned as a surprise (even though it must have been know at the time of boarding that the crew would time out.

Upgraded to first class. I would consider the first class on that plane to be only slightly more comfortable than coach. Long delay.

How is it that every American flight from DFW to IND is significantly delayed? This is the third time in two months I have been delayed flying out of DFW - ALWAYS for a maintenance issue. Makes me want to drop flying American altogether…or maybe flying through Dallas. Miserable experience.

Awful. They didn't even show concern that her connecting flight( Dallas to Mardrid) was gone/missing. I don't understand how that is even possible. Rudest answer from one of the crew was that American Airlines sold the tickets to somebody else. My daughter was not in the list.

We departed late but made up most of the time in flight. Our ticket was pure economy, so it wasn’t anything fancy; however, I heard that we arrived in Madrid at the exact same time that First Class passengers arrived! Overall, our experience was similar to what we had on other American Airlines transatlantic flights - good value at a reasonable price. We were even able to get our carry-on baggage onto the plane without needing to gate check it.

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.

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.

The flight was delayed twice. When the crew explained about the debris causing flat tires, I was glad they took the time to change all four.

The airline refused to board me because I showed up only 50 minutes prior to departure time, despite the fact that shortly before that, when I arrived at the airport still in time, they changed the terminal and I had to take a bus that took 20 minutes. Keep in mind that for some maintenance error I could not check in online like I usually do. Personnel at the airport was unable to let me in, customer care was beyond useless, the original airline operator (Iberia) was as useless as a toilet paper roll core in time of a wipe and all this uselessness made me waste my ticket, my reservations, my long time parking, food and most of all the joy of being with my family for the new year after working my bottom off even at Christmas. Am I happy? Come and ask me in person!

The food was horrible. The crew skipped over me for drinks(only got food?). I had to wait until everyone else was served drinks in order to receive mine(meal was done). No earphones were given. No free WiFi.

WILL NEVER FLY AMERICAN AIRLINES EVER AGAIN A TRUE DISGRACE

Yeah you have time and can sit around for a while to be okay for you but if you planned on getting connected flights I recommend not to fly with this Airline it's best they for flying out of the country

All crew except 1 were excellent. When I asked assistance with business class seat conversion to a bed (not being familiar as never used before but have numerous times with other airlines) crew member helped very reluctantly. I should have told her that business class seat conversion is totally different in each airline such as Delta, New Zealand Air and United. Sorry it was my 1st time with America Airlines. Now I know, I won't bother asking assistance in future.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

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

We were never able to take this flight because our first flight from Austin to Dallas was cancelled.

The internet was horrible. Plus they charged me $25 for service that didn't work which should have been free since I'm Concierge Key. The flight attendant Rick Young was excellent. Greeted me by name and very attentive.

Boarding in Dallas was hell with extremely rude gate agents , especially a lady named Rajathi who was the epitome of rudeness with no compassion at all . She was horrible and I wonder why airlines have people like her on their roster who exude arrogance and haughtiness . Will probably not fly British Airwsys because of people like her .

All and it was good . But no one woke me when meals came around . Please have a don’t not disturb sign if you opted for that . Left very hungry missing all meals .

They ran out of earphones so my 3rd daughter couldn’t use the on board entertainment the entire flight. They also ran out of food choices (chicken or cheese) by the time they got to the last few rows, so my oldest daughter, wasn’t given a choice. Luckily she isn’t a vegetarian because they only had chicken left.

Crew could not even try to accommodate my food request. Phone Charging USB thing was not working.

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

Information on your arrival and departure airports