Porto

$313+ Cheap flights from Atlanta (ATL) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — OPO
Apr 22 — Apr 291
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to Porto are usually found in February or January, booked 74 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Atlanta to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Atlanta (ATL) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$722
(Mytrip)

One-way from

$313
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$886
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Porto flight deals.
Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Porto flights.
From Atlanta Hartsfield-Jackson to Porto
One-way flight from Atlanta Hartsfield-Jackson to Porto
Highest demand for flights based on searches. 22% potential increase in price ($283 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Average for round-trip flights in April 2025

Find flight deals from Atlanta to Porto

Cheapest flights from Atlanta to Porto
Explore the most affordable flight options available from Atlanta to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This Air Canada deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/119:00 amATL - OPO
2 stops21h 15mAir Canada
Wed 11/196:00 amOPO - ATL
2 stops20h 03mAir Canada
Deal found 4/17$640
This Air Canada deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/119:00 amATL - OPO
2 stops21h 15mMultiple Airlines
Wed 11/197:30 pmOPO - ATL
2 stops31h 32mMultiple Airlines
Deal found 4/16$641
This KLM deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/115:00 pmATL - OPO
1 stop12h 50mKLM
Wed 11/1911:15 amOPO - ATL
1 stop14h 15mKLM
Deal found 4/17$644
This Delta deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/113:10 pmATL - OPO
2 stops14h 40mDelta
Wed 11/1911:15 amOPO - ATL
1 stop14h 15mDelta
Deal found 4/17$649
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/114:50 pmATL - OPO
1 stop17h 25mUnited Airlines
Wed 11/1912:35 pmOPO - ATL
1 stop12h 29mUnited Airlines
Deal found 4/16$653
This Lufthansa deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/114:50 pmATL - OPO
1 stop17h 25mLufthansa
Wed 11/196:00 amOPO - ATL
2 stops18h 07mLufthansa
Deal found 4/16$659
This FlightHub deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/249:45 pmATL - OPO
1 stop37h 05mTurkish Airlines
Tue 9/3010:50 amOPO - ATL
1 stop38h 00mTurkish Airlines
Deal found 4/17$690
This Iberia deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/69:06 amATL - OPO
2 stops17h 29mIberia
Wed 9/248:15 amOPO - ATL
2 stops21h 15mIberia
Deal found 4/16$817
This FlightHub deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:55 pmATL - OPO
1 stop34h 05mScandinavian Airlines
Tue 9/94:20 pmOPO - ATL
2 stops30h 00mScandinavian Airlines
Deal found 4/17$855

Cheapflights Fare Finder

Customize your flight search to find flights from Atlanta to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
Use the filters below to find and compare flights from Atlanta to Porto that are best for you.

Fly from

Atlanta

Fly to

Porto

Route

Depart

Return

Price

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 5/13

1:54 pm-5:45 pm

3 stops22h 51m

Porto

Tue 5/20

11:35 am-4:57 pm

3 stops34h 22m

$722

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 5/5

8:55 am-11:25 am

2 stops21h 30m

Porto

Tue 5/20

6:00 am-9:34 pm

2 stops20h 34m

$768

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 7/15

7:32 pm-9:20 am

2 stops32h 48m

Porto

Tue 7/22

12:50 pm-9:29 pm

3 stops37h 39m

$799

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 7/6

8:05 pm-3:30 pm

1 stop14h 25m

Porto

Wed 9/24

8:10 pm-1:30 pm

1 stop22h 20m

$814

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 7/6

9:06 am-7:35 am

2 stops17h 29m

Porto

Wed 9/24

8:15 am-12:30 am

2 stops21h 15m

$817

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 7/6

3:35 pm-3:30 pm

1 stop18h 55m

Porto

Wed 9/24

6:15 am-11:03 pm

2 stops21h 48m

$824

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 5/18

10:15 pm-8:20 pm

1 stop17h 05m

Porto

Thu 5/29

9:55 am-8:25 pm

1 stop15h 30m

$1,065

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Thu 5/15

2:38 pm-11:20 pm

2 stops27h 42m

Porto

Tue 6/3

6:00 am-5:32 pm

2 stops16h 32m

$1,078

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 7/15

1:50 pm-2:00 pm

2 stops19h 10m

$313

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 6/30

1:55 pm-9:35 am

1 stop14h 40m

$603

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 13 results
1
2

Compare providers for flights from Atlanta to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Atlanta to Porto in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Atlanta-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Atlanta-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Atlanta-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Atlanta-Porto flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Atlanta-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Atlanta to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Atlanta with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Atlanta to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Atlanta to Porto. Price data was last updated on April 11, 2025.

Booking 74 days in advance of your planned departure date is, on average, the best time to get cheap flights from Atlanta to Porto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Atlanta to Porto?

Currently, January is the cheapest month in which you can book a flight from Atlanta to Porto (average of $523). Flying from Atlanta to Porto in June is currently the most expensive (average of $1,081). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ATL to OPO?

Find hourly flight availability from Atlanta to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.

It’s typically best to fly out from Atlanta to Porto in the morning. Doing so could potentially save you 30% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Atlanta to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Atlanta to Porto flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated April 17, 2025.
See what other customers who have flown with Delta, KLM and United Airlines from Atlanta to Porto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
8.0
Very good
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

ATL - JNB

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Atlanta to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines flying from Atlanta to Porto round-trip?

    Flying on Air Canada is currently your cheapest option to Porto, with prices starting at $768. Additional round-trip tickets that might be worth considering are offered by United Airlines and KLM, with the lowest prices starting at $799 and $814, respectively. Air Canada is priced at 22% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Atlanta to Porto one-way?

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as $603. Users have also found prices from $668 and $682 on United Airlines and KLM, respectively.

  • Can I find deals for flights from Atlanta to Porto that include hotel bookings?

    Yes. In addition to deals on Atlanta to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Atlanta to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Atlanta to Porto.

  • Can I find deals for business class flights from Atlanta to Porto?

    Yes. Cheapflights offers flight deals from Atlanta to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Atlanta to Porto?

    Currently, January is the cheapest month in which you can book a flight from Atlanta to Porto (average of $523). Flying from Atlanta to Porto in June is currently the most expensive (average of $1,081). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Atlanta?

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Top 6 airlines flying from Atlanta to Porto

Discover the top 6 airlines that operate flights from Atlanta to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$561Average$1,001FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$568Average$656FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$579Average$1,360FlexibilityNo cancel feeOn-time69%
DeltaCheapest$597Average$1,094FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$626Average$709FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$1,068Average$1,232FlexibilityNo cancel feeOn-time77%

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