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$269+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — OPO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Atlanta Hartsfield-Jackson to Porto are usually found in February or January, booked 17 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 June 12, 2025.

Round-trip from

$603
(Mytrip)

One-way from

$297
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,303
From Atlanta Hartsfield-Jackson to Porto
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One-way flight from Atlanta Hartsfield-Jackson to Porto
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Highest demand for flights based on searches. 22% potential increase in price ($287 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 6/10. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/98:00 pmATL - OPO
1 stop15h 45mScandinavian Airlines
Fri 11/215:45 pmOPO - ATL
1 stop28h 40mScandinavian Airlines
Deal found 6/10$488
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Sun 11/99:35 amATL - OPO
2 stops18h 55mUnited Airlines
Thu 11/2012:35 pmOPO - ATL
1 stop12h 33mUnited Airlines
Deal found 6/10$584
This Air Canada deal was found by Cheapflights users on 6/10. 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.
Wed 11/1212:55 pmATL - OPO
2 stops17h 20mAir Canada
Thu 11/206:00 amOPO - ATL
2 stops19h 46mAir Canada
Deal found 6/10$601
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/102:52 pmATL - OPO
1 stop14h 53mMultiple Airlines
Wed 9/176:10 pmOPO - ATL
1 stop32h 18mMultiple Airlines
Deal found 6/11$603
This Iberia deal was found by Cheapflights users on 6/11. 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.
Tue 11/1112:48 pmATL - OPO
2 stops13h 52mIberia
Wed 11/198:40 pmOPO - ATL
2 stops30h 01mIberia
Deal found 6/11$607
This Lufthansa deal was found by Cheapflights users on 6/10. 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 11/114:55 pmATL - OPO
1 stop16h 50mLufthansa
Wed 11/196:00 amOPO - ATL
2 stops18h 42mLufthansa
Deal found 6/10$610
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 11/128:30 pmATL - OPO
1 stop33h 20mDelta
Tue 11/1811:45 amOPO - ATL
2 stops25h 48mDelta
Deal found 6/10$622
This FlightHub deal was found by Cheapflights users on 6/12. 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 9/89:45 pmATL - OPO
1 stop31h 05mTurkish Airlines
Tue 9/1610:50 amOPO - ATL
1 stop38h 00mTurkish Airlines
Deal found 6/12$676
This British Airways deal was found by Cheapflights users on 6/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:27 pmATL - OPO
2 stops16h 28mBritish Airways
Wed 10/228:15 amOPO - ATL
2 stops17h 35mBritish Airways
Deal found 6/10$737
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/66:10 pmATL - OPO
2 stops16h 45mAmerican Airlines
Wed 9/2412:20 pmOPO - ATL
2 stops16h 36mAmerican Airlines
Deal found 6/11$767
This Brussels Airlines deal was found by Cheapflights users on 6/11. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:05 pmATL - OPO
2 stops42h 55mBrussels Airlines
Mon 9/294:50 pmOPO - ATL
2 stops26h 30mBrussels Airlines
Deal found 6/11$840
This lol.travel deal was found by Cheapflights users on 6/12. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/286:00 amATL - OPO
2 stops32h 00mTAP AIR PORTUGAL
Wed 8/1310:00 amOPO - ATL
2 stops39h 19mTAP AIR PORTUGAL
Deal found 6/12$909

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 June 12, 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

Sun 11/9

8:00 pm-4:45 pm

1 stop15h 45m

Porto

Fri 11/21

5:45 pm-5:25 pm

1 stop28h 40m

$488

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 11/9

9:35 am-9:30 am

2 stops18h 55m

Porto

Thu 11/20

12:35 pm-8:08 pm

1 stop12h 33m

$584

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 11/12

12:55 pm-11:15 am

2 stops17h 20m

Porto

Thu 11/20

6:00 am-8:46 pm

2 stops19h 46m

$601

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 9/10

2:52 pm-10:45 am

1 stop14h 53m

Porto

Wed 9/17

6:10 pm-9:28 pm

1 stop32h 18m

$603

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 11/11

12:48 pm-7:40 am

2 stops13h 52m

Porto

Wed 11/19

8:40 pm-9:41 pm

2 stops30h 01m

$607

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 11/11

4:55 pm-2:45 pm

1 stop16h 50m

Porto

Wed 11/19

6:00 am-7:42 pm

2 stops18h 42m

$610

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 11/12

8:30 pm-10:50 am

1 stop33h 20m

Porto

Tue 11/18

11:45 am-8:33 am

2 stops25h 48m

$622

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 9/8

9:45 pm-9:50 am

1 stop31h 05m

Porto

Tue 9/16

10:50 am-7:50 pm

1 stop38h 00m

$676

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Fri 10/17

6:27 pm-3:55 pm

2 stops16h 28m

Porto

Wed 10/22

8:15 am-8:50 pm

2 stops17h 35m

$737

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 7/6

6:10 pm-3:55 pm

2 stops16h 45m

Porto

Wed 9/24

12:20 pm-11:56 pm

2 stops16h 36m

$767

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 20 results
1
2

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 June 9, 2025.

Booking 17 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 $1,047). 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 June 12, 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.

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 June 12, 2025.
See what other customers who have flown with Delta, KLM and Brussels 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.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

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.
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

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.
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

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.
Brussels Airlines
7.4
Good
355 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

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.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

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.
Turkish Airlines
7.3
Good
3,848 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

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 Turkish Airlines is currently your cheapest option to Porto, with prices starting at $676. Additional round-trip tickets that might be worth considering are offered by American Airlines and KLM, with the lowest prices starting at $767 and $783, respectively. Turkish Airlines is priced at 30% 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 United Airlines. According to our data, you can fly for as low as $583. Users have also found prices from $597 and $601 on KLM and Delta, 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 $1,047). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$569Average$668FlexibilityNo cancel feeOn-time76%
KLMCheapest$569Average$1,007FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$579Average$1,134FlexibilityNo cancel feeOn-time69%
DeltaCheapest$595Average$1,042FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$626Average$708FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$1,168Average$1,260FlexibilityNo cancel feeOn-time77%

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