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$509+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — ATL
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:35 pmOPO - ATL
1 stop28h 50mScandinavian Airlines
Sun 12/288:00 pmATL - OPO
1 stop15h 45mScandinavian Airlines
Deal found 12/10$749
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:25 pmOPO - ATL
2 stops30h 57mMultiple Airlines
Wed 1/74:55 pmATL - OPO
1 stop13h 45mMultiple Airlines
Deal found 12/11$823
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:25 pmOPO - ATL
2 stops30h 57mSWISS
Wed 1/73:40 pmATL - OPO
2 stops38h 30mSWISS
Deal found 12/11$829
This American Airlines deal was found by Cheapflights users on 12/11. 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 12/218:20 amOPO - ATL
2 stops16h 50mAmerican Airlines
Mon 12/296:26 pmATL - OPO
2 stops40h 34mAmerican Airlines
Deal found 12/11$898
This KLM deal was found by Cheapflights users on 12/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:15 amOPO - ATL
1 stop34h 40mKLM
Wed 1/73:50 pmATL - OPO
1 stop13h 40mKLM
Deal found 12/11$914
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2112:30 pmOPO - ATL
2 stops39h 53mUnited Airlines
Fri 1/212:55 pmATL - OPO
2 stops20h 50mUnited Airlines
Deal found 12/11$1,025
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1110:55 amOPO - ATL
1 stop37h 50mTurkish Airlines
Sun 12/149:50 pmATL - OPO
1 stop36h 20mTurkish Airlines
Deal found 12/10$1,030
This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/128:40 amOPO - ATL
2 stops18h 13mMultiple Airlines
Sun 12/284:55 pmATL - OPO
1 stop17h 20mMultiple Airlines
Deal found 12/10$1,035
This KLM deal was found by Cheapflights users on 12/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2111:15 amOPO - ATL
1 stop14h 30mKLM
Mon 12/298:10 pmATL - OPO
1 stop14h 15mKLM
Deal found 12/11$1,081
This Delta deal was found by Cheapflights users on 12/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2111:25 amOPO - ATL
2 stops16h 25mDelta
Mon 12/298:10 pmATL - OPO
1 stop14h 15mDelta
Deal found 12/11$1,136
This Delta deal was found by Cheapflights users on 12/9. 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.
Thu 12/1111:20 amOPO - ATL
2 stops17h 51mDelta
Sun 12/1411:05 amATL - OPO
2 stops18h 25mDelta
Deal found 12/9$1,169

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$582
(Mytrip)

One-way from

$509
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,438
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
One-way flight from Porto to Atlanta Hartsfield-Jackson
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($159 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 12, 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

Fri 1/16

10:00 am-9:02 am

2 stops28h 02m

Atlanta Hartsfield-Jackson

Thu 1/29

9:57 am-10:05 pm

2 stops31h 08m

$582

PortoAtlanta

OPO - ATL

OPOATL

Porto

Thu 1/15

6:35 pm-7:53 am

1 stop18h 18m

Atlanta Hartsfield-Jackson

Wed 1/28

8:58 am-11:55 am

2 stops21h 57m

$626

PortoAtlanta

OPO - ATL

OPOATL

Porto

Sat 2/7

12:30 pm-2:30 pm

1 stop31h 00m

Atlanta Hartsfield-Jackson

Sat 2/21

4:55 pm-11:40 am

1 stop13h 45m

$787

PortoAtlanta

OPO - ATL

OPOATL

Porto

Thu 1/15

12:30 pm-2:30 pm

1 stop31h 00m

Atlanta Hartsfield-Jackson

Wed 1/28

4:55 pm-3:25 pm

1 stop17h 30m

$791

PortoAtlanta

OPO - ATL

OPOATL

Porto

Sat 2/7

6:00 am-9:15 pm

2 stops20h 15m

Atlanta Hartsfield-Jackson

Sat 2/21

3:42 pm-6:35 pm

2 stops21h 53m

$792

PortoAtlanta

OPO - ATL

OPOATL

Porto

Fri 1/23

12:30 pm-2:30 pm

1 stop31h 00m

Atlanta Hartsfield-Jackson

Mon 1/26

4:55 pm-2:55 pm

1 stop17h 00m

$809

PortoAtlanta

OPO - ATL

OPOATL

Porto

Fri 1/16

12:30 pm-2:30 pm

1 stop31h 00m

Atlanta Hartsfield-Jackson

Thu 1/29

4:55 pm-11:40 am

1 stop13h 45m

$810

PortoAtlanta

OPO - ATL

OPOATL

Porto

Wed 12/17

6:25 am-12:46 pm

3 stops35h 21m

$509

PortoAtlanta

OPO - ATL

OPOATL

Porto

Wed 12/17

4:10 pm-7:45 pm

1 stop32h 35m

$732

PortoAtlanta

OPO - ATL

OPOATL

Porto

Wed 12/17

6:00 am-9:18 pm

2 stops20h 18m

$843

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 11 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 December.
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 $646). Flying from Porto to Atlanta in July is currently the most expensive (average of $895). 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 December 12, 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 December 12, 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
1,432 reviews

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.3

Food

7.2

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,432 reviews
KLM
7.7
Good
1,432 reviews

Boarding

7.8

Overall

7.7

Comfort

7.6

Crew

8.3

Food

7.2

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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.

  • 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 7% 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 $646). Flying from Porto to Atlanta in July is currently the most expensive (average of $895). 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
Duluth
College Park
McDonough
Roswell
Norcross
Stone Mountain
Lawrenceville
Kennesaw
Peachtree Corners
Conyers
Buford
Lithia Springs
Lithonia
Covington
Marietta
Smyrna
Acworth
Commerce
Douglasville
Auburn

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$871Average$871FlexibilityNo cancel feeOn-time75%

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