ATL - OPO

$283 Find Cheap Flights from Atlanta to Porto - 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 Atlanta to Porto departing on 7/14. 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 Atlanta to Porto.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Atlanta to Porto.
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Everything you should know

Cheapest round-trip
$730
Typical prices: $862-$626
American Airlines
Tue 11/3Wed 11/11
ATL - OPO • 2 stops
Cheapest one-way
$283
Typical prices: $458-$613
Multiple Airlines
Tue 7/14
ATL - OPO • 3 stops
Top airlines
Cheapest • from $730 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Atlanta and Porto. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $423 (round-trip)
Shortest trip • 10h 45m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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 Atlanta to Porto (ATL-OPO)

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

Tue, Nov 3 - Wed, Nov 11
American Airlines Logo
1:20 pm - 11:45 am
ATL
-
OPO
17h 25m
2 stops
American Airlines Logo
8:20 am - 10:56 pm
OPO
-
ATL
19h 36m
2 stops
$730American Airlines
Tue, Nov 3 - Wed, Nov 11
KLM Logo
5:40 pm - 10:30 am
ATL
-
OPO
11h 50m
1 stop
KLM Logo
4:10 pm - 1:35 pm
OPO
-
ATL
26h 25m
1 stop
$769KLM
Tue, Nov 3 - Wed, Nov 11
United Airlines Logo
5:50 pm - 9:30 am
ATL
-
OPO
10h 40m
1 stop
United Airlines Logo
6:00 am - 8:04 pm
OPO
-
ATL
19h 04m
2 stops
$777United Airlines
Fri, Nov 6 - Wed, Nov 11
Iberia Logo
6:38 pm - 4:00 pm
ATL
-
OPO
16h 22m
2 stops
Iberia Logo
8:20 am - 11:57 pm
OPO
-
ATL
20h 37m
2 stops
$780Iberia
Wed, Oct 14 - Wed, Oct 21
American Airlines Logo
10:56 am - 7:40 am
ATL
-
OPO
15h 44m
2 stops
American Airlines Logo
8:20 am - 7:39 pm
OPO
-
ATL
16h 19m
2 stops
$786American Airlines
Thu, Sep 17 - Mon, Dec 14
Turkish Airlines Logo
9:50 pm - 9:45 am
ATL
-
OPO
30h 55m
1 stop
Turkish Airlines Logo
4:25 pm - 7:45 pm
OPO
-
ATL
32h 20m
1 stop
$789Turkish Airlines
Sun, Aug 9 - Tue, Aug 25
Turkish Airlines Logo
9:50 pm - 3:50 pm
ATL
-
OPO
37h 00m
1 stop
Turkish Airlines Logo
4:50 pm - 7:45 pm
OPO
-
ATL
31h 55m
1 stop
$794Turkish Airlines
Mon, Nov 2 - Thu, Nov 5
Scandinavian Airlines Logo
8:00 pm - 11:05 am
ATL
-
OPO
34h 05m
1 stop
Scandinavian Airlines Logo
5:50 pm - 5:45 pm
OPO
-
ATL
28h 55m
1 stop
$797Scandinavian Airlines
Mon, Sep 28 - Wed, Oct 7
Turkish Airlines Logo
9:50 pm - 9:45 am
ATL
-
OPO
30h 55m
1 stop
Turkish Airlines Logo
10:45 am - 7:45 pm
OPO
-
ATL
38h 00m
1 stop
$802Turkish Airlines
Thu, Sep 10 - Wed, Sep 16
Turkish Airlines Logo
9:50 pm - 9:45 am
ATL
-
OPO
30h 55m
1 stop
Turkish Airlines Logo
10:45 am - 7:45 pm
OPO
-
ATL
38h 00m
1 stop
$806Turkish Airlines
Booking Insights

KAYAK's insights & trends for Atlanta to Porto flights

Get data-powered insights and trends into flights from Atlanta 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 Atlanta 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 Atlanta to Porto departing in November.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Atlanta 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 Atlanta to Porto is March, where tickets cost $581 (return) on average. On the other hand, the most expensive months are June and September, where the average cost of round-trip tickets is $1,210 and $989 respectively.

How far in advance should I book a flight from Atlanta 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 Atlanta 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 Atlanta to Porto, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$283
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 47% increase in price.
Flight from Atlanta to Porto

When to book flights from Atlanta to Porto

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

  • What is the cheapest flight from Atlanta to Porto?

    In the last 5 days, the lowest price for a flight from Atlanta to Porto was $283 for a one-way ticket and $730 for a round-trip.

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

    Yes, you’ll need a passport to travel to Porto from Atlanta.

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

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

  • Which airline alliances offer flights from Atlanta to Porto?

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

  • Which is the best airline for flights from Atlanta to Porto, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Atlanta to Porto are Delta and KLM. With an average price for the route of $1,013 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $876 and an overall rating of 7.8.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Atlanta 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 Atlanta 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 Atlanta with another airline. Booking your flights between Atlanta and OPO can sometimes prove cheaper using this method.

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

 
See real verified KAYAK customer reviews for airlines flying from Atlanta 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 Atlanta 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 8397 reviews
8.1Boarding
7.8Comfort
7.8Entertainment
8.5Crew
7.2Food
Airline reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

4.0 OkayMichelle, Jun 2026
ATL - PIT
Read more Delta reviews

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

The crew were efficient. The pilots seemed professional. It was a bit chilly in our seats. The sheet provided weren’t very helpful.

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

Everything was great. The only issue is unfixable. Seats are too small. 😁🤪

No entertainment. Plane was so small had to pink tag a carry on ive used for 20 years easily on board. The fact the flight got in at midnight, had to wait for crew in fort wayne to allow the plane to approach the gate, THEN had to wait for bag on jet bridge made experience irritating at best.

Overall Good! The weather delayed our takeoff from Atlanta and our arrival in Miami! If Mother Nature can mess up a flight she will do it every time!

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

The flight was delayed. The aircraft was unclean. Promised seat was not given due to change in Aircraft. Not one crew on ground was in a position to give any response. Amsterdam Airport is AVIODABLE Over crowded. Over Expensive. Poor Services.

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

I love Air France. This was another great experience despite a slight delay in the departure. The time was made up on flight. I would take AirFrance again when traveling to the far East. Merci beaucoup.

Everything is good except the seats are tightened no rooms for the legs,

The plane's pilots, including the captain himself, thanked me for the flight. I know it's just marketing, but it was really nice to see these people. It's a great idea. Airplane food is never "good," but the entire crew and flight organization were top-notch. I really liked Delta, and I think I've traveled all over the world, and that was something new for me. Maybe even the old planes, the B767, but next time I have a choice, Delta will be my first choice. Thank you, a satisfied passenger :)

Middle seats SUCK!!!! I paid more money than I should have because of your terrible site Kayak.com. I'll try to use your competitors going forward. I am so disappointed you would play off business class.com as business class seats

They lost my bag and I still haven’t received it yet

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

Not consistent with the food quality (I mean taste not freshness)

Food was really mediocre for premium economy in comparison to other airlines… the crew was nowhere to be found… 14 hour flight…

Worst airlines either. First leg was delayed because of crew not available. My connection was missed so they booked me automatically the next day! But, impossible to get anyone on site, web site does not let me access my reservation anymore, confirmed by useless agents over the phone. My 2-leg trip with part in business class arriving at 4:10pm ends up in an awful 3-leg arriving at 9pm the next day with no way to even choose the seats and of course at the very end of the plane. I can understand problems arrive but the way Air France handle it is just unacceptable. You are on your own. Apparently getting you to your destination is the only thing they consider their duty. The customer experience and fatigue is none of their concern. And I have a status with them. I will reconsider my priorities when flying with Air France and encourage everyone to do the same.

Our flight crew were terrific. And they handle a difficult passenger with finesse.

Entertainment system is okay, flight attendants were ok. Leg space very narrow, I couldn’t get what I wanted to eat, dinner nor breakfast.

Excellent experience with business class area. Staff was attentive and food was amazing. Only one bathroom for business class which was logistically difficult for the staff while preparing meals. Need to offer fluids with meals. I did not get enough water to drink. But overall I rate it 5 star.

On time, great food, good drink selection! Only down was alcohol-free lounge. Lufthansa had a much better offering!

Be honest of what you sell: This was sold as Business Class on all three legs, while the JetBlue plane didn't even have business class seats, and wanted $164 for extra legroom seats.

Seat assignments for family traveling with 2 children. Loud crowd during sleep time

It was crowded… the bathrooms dirty and smelly. The seats have been made even smaller.

delayed to take off from detroit by 3 hours lost baggage in istanbul and now in venice without baggage

Seats were very tight with poor legroom - and I am average height. During the 12 hour flight, tiny paper cups of drinks we're only offered during the super and breakfast services, with the crew nowhere to be seen in between. One of the bathrooms was out of order, leading to long lines waiting to use the remaining two available to the economy class passengers.

short flight but we still got a very nice lunch and the crew did an excellent job in taking care of us

For that price on Business class, I expected to have the pod seats. These were configured as 2/3/2 and my seat mate talked half the flight with a friend across the isle, loudly. Very uncouth.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

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

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

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

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

It was perfect! United Airlines staff was extremely caring, super friendly and professional

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

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

Information on your arrival and departure airports