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$551+ Cheap flights from Porto (OPO) to Atlanta (ATL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — ATL
nov. 15 — nov. 221
sáb. 11/15
sáb. 11/22
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 octubre 16, 2025.

This Gotogate deal was found by Cheapflights users on 10/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/215:35 pmOPO - ATL
1 stop28h 50mScandinavian Airlines
dom. 12/78:00 pmATL - OPO
1 stop15h 45mScandinavian Airlines
Deal found 10/16$551
This Gotogate deal was found by Cheapflights users on 10/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/215:35 pmOPO - ATL
1 stop28h 50mScandinavian Airlines
jue. 12/48:00 pmATL - OPO
1 stop15h 55mScandinavian Airlines
Deal found 10/16$577
This Trip.com deal was found by Cheapflights users on 10/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/187:35 amOPO - ATL
2 stops30h 27mMultiple Airlines
sáb. 11/2210:05 pmATL - OPO
2 stops36h 10mMultiple Airlines
Deal found 10/15$655
This Mytrip deal was found by Cheapflights users on 10/15. 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.
mar. 11/118:00 pmOPO - ATL
3 stops32h 52mMultiple Airlines
sáb. 11/158:00 amATL - OPO
2 stops25h 55mMultiple Airlines
Deal found 10/15$740
This Mytrip deal was found by Cheapflights users on 10/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/2111:00 amOPO - ATL
2 stops35h 25mMultiple Airlines
jue. 12/48:00 pmATL - OPO
2 stops21h 05mMultiple Airlines
Deal found 10/16$760
This Gotogate deal was found by Cheapflights users on 10/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/216:30 amOPO - ATL
2 stops20h 13mAir Canada
dom. 12/712:55 pmATL - OPO
2 stops17h 45mAir Canada
Deal found 10/16$786
This Flighttix deal was found by Cheapflights users on 10/16. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/2112:50 pmOPO - ATL
2 stops37h 43mMultiple Airlines
dom. 12/74:55 pmATL - OPO
1 stop13h 45mMultiple Airlines
Deal found 10/16$787
This Kiwi.com deal was found by Cheapflights users on 10/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/214:15 pmOPO - ATL
1 stop27h 15mLufthansa
jue. 12/44:55 pmATL - OPO
1 stop13h 45mLufthansa
Deal found 10/16$789

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 octubre 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$543
(lol.travel)

Popular in

December

Cheapest in

February

Average price

$871
Provider with most accurate pricing for Porto-Atlanta Hartsfield-Jackson flight deals.
Search Deals
Provider most trusted by Cheapflights users for Porto-Atlanta Hartsfield-Jackson flights.
Search Deals
From Porto to Atlanta Hartsfield-Jackson
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($169 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 October 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 octubre 16, 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

vie. 11/21

5:35 pm-5:25 pm

1 stop28h 50m

Atlanta Hartsfield-Jackson

dom. 12/7

8:00 pm-4:45 pm

1 stop15h 45m

$559

PortoAtlanta

OPO - ATL

OPOATL

Porto

mar. 11/11

8:00 pm-11:52 pm

3 stops32h 52m

Atlanta Hartsfield-Jackson

sáb. 11/15

8:00 am-2:55 pm

2 stops25h 55m

$740

PortoAtlanta

OPO - ATL

OPOATL

Porto

mar. 11/18

12:35 pm-8:40 am

1 stop25h 05m

Atlanta Hartsfield-Jackson

sáb. 11/22

10:06 pm-9:30 am

1 stop30h 24m

$780

PortoAtlanta

OPO - ATL

OPOATL

Porto

vie. 11/21

6:00 am-7:42 pm

2 stops18h 42m

Atlanta Hartsfield-Jackson

jue. 12/4

4:55 pm-11:40 am

1 stop13h 45m

$797

PortoAtlanta

OPO - ATL

OPOATL

Porto

jue. 12/18

12:30 pm-1:44 pm

2 stops30h 14m

Atlanta Hartsfield-Jackson

jue. 1/1

4:55 pm-11:40 am

1 stop13h 45m

$797

PortoAtlanta

OPO - ATL

OPOATL

Porto

vie. 11/21

6:00 am-7:42 pm

2 stops18h 42m

Atlanta Hartsfield-Jackson

dom. 12/7

4:55 pm-11:40 am

1 stop13h 45m

$797

PortoAtlanta

OPO - ATL

OPOATL

Porto

mar. 12/16

12:30 pm-2:30 pm

1 stop31h 00m

Atlanta Hartsfield-Jackson

jue. 1/1

4:55 pm-11:40 am

1 stop13h 45m

$807

PortoAtlanta

OPO - ATL

OPOATL

Porto

lun. 12/15

12:30 pm-2:30 pm

1 stop31h 00m

Atlanta Hartsfield-Jackson

mar. 12/30

4:55 pm-11:40 am

1 stop13h 45m

$807

PortoAtlanta

OPO - ATL

OPOATL

Porto

lun. 12/15

12:30 pm-2:30 pm

1 stop31h 00m

Atlanta Hartsfield-Jackson

jue. 1/1

4:55 pm-11:40 am

1 stop13h 45m

$807

PortoAtlanta

OPO - ATL

OPOATL

Porto

mar. 12/16

12:30 pm-2:30 pm

1 stop31h 00m

Atlanta Hartsfield-Jackson

mar. 12/30

4:55 pm-11:40 am

1 stop13h 45m

$807

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

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 October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice 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 Porto-Atlanta flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Atlanta flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, November is the cheapest month in which you can book a flight from Porto to Atlanta (average of $647). Flying from Porto to Atlanta in July is currently the most expensive (average of $1,052). 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 octubre 16, 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 octubre 16, 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
1,404 reviews

Entertainment

7.1

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.6

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
1,404 reviews
KLM
7.7
Good
1,404 reviews

Entertainment

7.1

Food

7.3

Boarding

7.8

Crew

8.4

Comfort

7.6

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 18h 42m. 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.

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

    $1,825 is the cheapest one-way deal found within the past few days, from Scandinavian Airlines. You may also be able to find cheap deals on Air Europa and Air Canada, with prices starting from $2,128 and $7,337, respectively.

  • 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, November is the cheapest month in which you can book a flight from Porto to Atlanta (average of $647). Flying from Porto to Atlanta in July is currently the most expensive (average of $1,052). 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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Duluth
McDonough
Norcross
Roswell
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Kennesaw
Conyers
Buford
Marietta
Douglasville
Commerce
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Covington
Smyrna
Acworth
Auburn
Sandy Springs
Suwanee

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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.
Lisbon to Atlanta flights
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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 octubre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$871Average$871FlexibilityNo cancel feeOn-time75%

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