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$379+ Cheap flights from Porto (OPO) to Atlanta (ATL)

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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — ATL
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from Porto to Atlanta

Cheapest flights from Porto to Atlanta
Explore the most affordable flight options available from Porto to Atlanta. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This lol.travel deal was found by Cheapflights users on 11/11. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/215:35 pmOPO - ATL
1 stop28h 50mScandinavian Airlines
Sun 12/78:00 pmATL - OPO
1 stop15h 45mScandinavian Airlines
Deal found 11/11$629
This Mytrip deal was found by Cheapflights users on 11/13. 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.
Fri 11/215:35 pmOPO - ATL
3 stops32h 52mMultiple Airlines
Sun 12/75:45 amATL - OPO
2 stops30h 00mMultiple Airlines
Deal found 11/13$727
This Lufthansa deal was found by Cheapflights users on 11/12. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:30 pmOPO - ATL
1 stop31h 00mLufthansa
Sat 1/172:40 pmATL - OPO
2 stops17h 10mLufthansa
Deal found 11/12$778
This United Airlines deal was found by Cheapflights users on 11/13. 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.
Thu 11/2012:30 pmOPO - ATL
2 stops36h 37mUnited Airlines
Fri 12/59:35 amATL - OPO
2 stops21h 05mUnited Airlines
Deal found 11/13$785
This American Airlines deal was found by Cheapflights users on 11/13. 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.
Fri 11/218:20 amOPO - ATL
2 stops20h 34mAmerican Airlines
Tue 12/210:10 pmATL - OPO
2 stops28h 30mAmerican Airlines
Deal found 11/13$788
This United Airlines deal was found by Cheapflights users on 11/13. 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.
Fri 11/2112:35 pmOPO - ATL
2 stops16h 54mUnited Airlines
Wed 12/32:37 pmATL - OPO
2 stops19h 48mUnited Airlines
Deal found 11/13$790
This American Airlines deal was found by Cheapflights users on 11/13. 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.
Fri 11/218:20 amOPO - ATL
2 stops16h 25mAmerican Airlines
Sun 12/79:08 amATL - OPO
2 stops17h 32mAmerican Airlines
Deal found 11/13$801

Cheap flight deals from Porto to Atlanta

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Atlanta (ATL). 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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$584
(Kiwi.com)

One-way from

$379
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$808
Provider with most accurate pricing for Porto-Atlanta Hartsfield-Jackson flight deals.
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Provider most trusted by Cheapflights users for Porto-Atlanta Hartsfield-Jackson flights.
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From Porto to Atlanta Hartsfield-Jackson
Search Deals
One-way flight from Porto to Atlanta Hartsfield-Jackson
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($168 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto to Atlanta 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 November 13, 2025.
Use the filters below to find and compare flights from Porto to Atlanta that are best for you.

Fly from

Porto

Fly to

Atlanta

Route

Depart

Return

Price

PortoAtlanta

OPO - ATL

OPOATL

Porto

Sat 1/24

6:35 pm-8:51 am

1 stop19h 16m

Atlanta Hartsfield-Jackson

Thu 1/29

7:08 pm-11:50 am

1 stop11h 42m

$584

PortoAtlanta

OPO - ATL

OPOATL

Porto

Tue 4/14

6:00 am-6:27 pm

2 stops17h 27m

Atlanta Hartsfield-Jackson

Thu 4/23

12:35 pm-9:45 am

2 stops16h 10m

$761

PortoAtlanta

OPO - ATL

OPOATL

Porto

Thu 4/9

6:00 am-9:00 pm

2 stops20h 00m

Atlanta Hartsfield-Jackson

Fri 4/17

7:05 am-9:45 am

2 stops21h 40m

$761

PortoAtlanta

OPO - ATL

OPOATL

Porto

Sat 1/24

6:00 am-9:43 pm

2 stops20h 43m

Atlanta Hartsfield-Jackson

Thu 1/29

12:55 pm-11:40 am

2 stops17h 45m

$762

PortoAtlanta

OPO - ATL

OPOATL

Porto

Sat 1/24

6:00 am-9:15 pm

2 stops20h 15m

Atlanta Hartsfield-Jackson

Thu 1/29

6:30 am-11:40 am

3 stops24h 10m

$766

PortoAtlanta

OPO - ATL

OPOATL

Porto

Mon 12/1

4:15 pm-2:30 pm

1 stop27h 15m

Atlanta Hartsfield-Jackson

Sat 1/17

4:55 pm-11:40 am

1 stop13h 45m

$778

PortoAtlanta

OPO - ATL

OPOATL

Porto

Wed 4/15

12:00 pm-1:55 pm

1 stop30h 55m

Atlanta Hartsfield-Jackson

Wed 4/22

4:41 pm-9:45 am

1 stop12h 04m

$781

PortoAtlanta

OPO - ATL

OPOATL

Porto

Thu 4/16

12:00 pm-1:55 pm

1 stop30h 55m

Atlanta Hartsfield-Jackson

Fri 4/24

4:41 pm-9:45 am

1 stop12h 04m

$781

PortoAtlanta

OPO - ATL

OPOATL

Porto

Fri 4/17

12:05 pm-1:55 pm

1 stop30h 50m

Atlanta Hartsfield-Jackson

Mon 4/20

4:41 pm-9:45 am

1 stop12h 04m

$781

PortoAtlanta

OPO - ATL

OPOATL

Porto

Fri 4/17

12:05 pm-1:55 pm

1 stop30h 50m

Atlanta Hartsfield-Jackson

Fri 4/24

4:41 pm-9:45 am

1 stop12h 04m

$781

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 16 results
1
2

Compare providers for flights from Porto to Atlanta

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 Porto to Atlanta in November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Porto-Atlanta flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Porto-Atlanta flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Porto-Atlanta flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto-Atlanta flights, Cheapflights users trust eDreams the most. eDreams 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 Porto-Atlanta 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 Porto to Atlanta

Have a flexible travel schedule? Discover the best time to fly to Atlanta from Porto 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 Porto to Atlanta

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

Currently, February is the cheapest month in which you can book a flight from Porto to Atlanta (average of $649). Flying from Porto to Atlanta in May is currently the most expensive (average of $898). 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 OPO to ATL?

Find hourly flight availability from Porto to Atlanta. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

A simple way to save on the total cost of your ticket is to fly from Porto to Atlanta at noon. If you’re flexible enough to do this you can expect to save up to 33% on your trip compared to booking a flight in the evening.

Reviews of airlines servicing Atlanta

Get insights into the airlines that provide service to Atlanta. 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 Atlanta. Reviews last updated November 13, 2025.
See what other customers who have flown with KLM from Porto to Atlanta have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,411 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,411 reviews
KLM
7.7
Good
1,411 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from Porto to Atlanta. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Porto to Atlanta?

    Departing from Porto to Atlanta will take you 17h 27m. Porto and Atlanta are separated by a distance of 4053 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Porto to Atlanta round-trip?

    According to our current data, KLM ($871), offers the cheapest pricing from Porto to Atlanta. You may be able to fly from Porto to Atlanta for 9% less than the average price by searching for this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto to Atlanta 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 Porto to Atlanta?

    Currently, February is the cheapest month in which you can book a flight from Porto to Atlanta (average of $649). Flying from Porto to Atlanta in May is currently the most expensive (average of $898). 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?

Book flights to Atlanta if you plan to visit one of these locations
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McDonough
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Alternative routes for Porto to Atlanta

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Porto to Atlanta

Discover the top airline that operate flights from Porto to Atlanta. 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$871Average$871FlexibilityNo cancel feeOn-time75%

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