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Cheap flights from Porto to Atlanta from $343

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to Atlanta departing on 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Porto to Atlanta

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
12:25 pm - 11:55 pm
OPO
-
ATL
16h 30m
2 stops
Iberia Logo
5:05 pm - 4:00 pm
ATL
-
OPO
17h 55m
2 stops
$839Iberia
Thu, Aug 27 - Wed, Sep 9
Multiple Airlines Logo
8:20 am - 10:07 pm
OPO
-
ATL
18h 47m
2 stops
Multiple Airlines Logo
2:11 pm - 11:45 am
ATL
-
OPO
16h 34m
2 stops
$841Multiple Airlines
Mon, Aug 31 - Mon, Sep 14
Multiple Airlines Logo
8:20 am - 10:07 pm
OPO
-
ATL
18h 47m
2 stops
Multiple Airlines Logo
10:35 pm - 8:05 pm
ATL
-
OPO
16h 30m
1 stop
$867Multiple Airlines
Mon, Aug 31 - Mon, Sep 14
Multiple Airlines Logo
8:20 am - 10:07 pm
OPO
-
ATL
18h 47m
2 stops
Multiple Airlines Logo
10:35 pm - 8:05 pm
ATL
-
OPO
16h 30m
1 stop
$869Multiple Airlines
Mon, Aug 31 - Mon, Sep 14
Delta Logo
5:00 am - 4:58 pm
OPO
-
ATL
16h 58m
1 stop
Delta Logo
7:35 pm - 3:25 pm
ATL
-
OPO
14h 50m
2 stops
$878Delta
Thu, Aug 27 - Wed, Sep 9
Lufthansa Logo
12:10 pm - 1:45 pm
OPO
-
ATL
30h 35m
1 stop
Lufthansa Logo
3:55 pm - 11:15 am
ATL
-
OPO
14h 20m
1 stop
$884Lufthansa
Mon, Aug 24 - Mon, Sep 7
United Airlines Logo
6:00 am - 7:29 pm
OPO
-
ATL
18h 29m
2 stops
United Airlines Logo
2:33 pm - 9:45 am
ATL
-
OPO
14h 12m
2 stops
$885United Airlines
Mon, Aug 31 - Mon, Sep 14
United Airlines Logo
6:00 am - 7:56 pm
OPO
-
ATL
18h 56m
2 stops
United Airlines Logo
6:30 am - 9:45 am
ATL
-
OPO
22h 15m
1 stop
$887United Airlines
Thu, Sep 24 - Sun, Sep 27
United Airlines Logo
6:00 am - 12:45 am
OPO
-
ATL
23h 45m
2 stops
United Airlines Logo
12:55 pm - 7:00 am
ATL
-
OPO
13h 05m
1 stop
$888United Airlines
Thu, Aug 27 - Wed, Sep 9
Lufthansa Logo
6:00 am - 12:45 am
OPO
-
ATL
23h 45m
2 stops
Lufthansa Logo
5:30 pm - 11:45 am
ATL
-
OPO
14h 15m
1 stop
$893Lufthansa
Fri, Oct 16 - Fri, Oct 30

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United Airlines flights from Porto to Atlanta

Our best United Airlines deals on Porto to Atlanta flight tickets
United Airlines
Aug 31
OPO6:00 amPorto
18h 29m
2 stops
ATL7:29 pmAtlanta Hartsfield-Jackson
Sep 14
ATL2:33 pmAtlanta Hartsfield-Jackson
14h 12m
2 stops
OPO9:45 amPorto
$885
United Airlines
Sep 24
OPO6:00 amPorto
18h 56m
2 stops
ATL7:56 pmAtlanta Hartsfield-Jackson
Sep 27
ATL6:30 amAtlanta Hartsfield-Jackson
22h 15m
1 stop
OPO9:45 amPorto
$887
United Airlines
Aug 27
OPO6:00 amPorto
23h 45m
2 stops
ATL12:45 amAtlanta Hartsfield-Jackson
Sep 9
ATL12:55 pmAtlanta Hartsfield-Jackson
13h 05m
1 stop
OPO7:00 amPorto
$888

British Airways flights from Porto to Atlanta

Our best British Airways deals on Porto to Atlanta flight tickets
British Airways
Aug 27
OPO12:25 pmPorto
16h 30m
2 stops
ATL11:55 pmAtlanta Hartsfield-Jackson
Sep 9
ATL10:35 pmAtlanta Hartsfield-Jackson
15h 30m
1 stop
OPO7:05 pmPorto
$963
British Airways
Aug 27
OPO12:25 pmPorto
16h 30m
2 stops
ATL11:55 pmAtlanta Hartsfield-Jackson
Sep 9
ATL10:35 pmAtlanta Hartsfield-Jackson
15h 30m
1 stop
OPO7:05 pmPorto
$964
British Airways
Aug 24
OPO9:25 pmPorto
26h 50m
2 stops
ATL7:15 pmAtlanta Hartsfield-Jackson
Sep 7
ATL10:35 pmAtlanta Hartsfield-Jackson
16h 30m
1 stop
OPO8:05 pmPorto
$973

momondo 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, momondo users made 832,500 searches. Data last updated July 16, 2026.
Use the filters below to find and compare flights from Porto to Atlanta that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoAtlanta

OPO - ATL

OPOATL

Porto

Thu 8/27

12:25 pm-11:55 pm

2 stops16h 30m

Atlanta Hartsfield-Jackson

Wed 9/9

5:05 pm-4:00 pm

2 stops17h 55m

$839

PortoAtlanta

OPO - ATL

OPOATL

Porto

Mon 8/31

8:20 am-10:07 pm

2 stops18h 47m

Atlanta Hartsfield-Jackson

Mon 9/14

2:11 pm-11:45 am

2 stops16h 34m

$841

PortoAtlanta

OPO - ATL

OPOATL

Porto

Mon 8/31

8:20 am-10:07 pm

2 stops18h 47m

Atlanta Hartsfield-Jackson

Mon 9/14

10:35 pm-8:05 pm

1 stop16h 30m

$867

PortoAtlanta

OPO - ATL

OPOATL

Porto

Mon 8/31

8:20 am-10:07 pm

2 stops18h 47m

Atlanta Hartsfield-Jackson

Mon 9/14

10:35 pm-8:05 pm

1 stop16h 30m

$869
Quickest round-trip

PortoAtlanta

OPO - ATL

OPOATL

Porto

Thu 8/27

5:00 am-4:58 pm

1 stop16h 58m

Atlanta Hartsfield-Jackson

Wed 9/9

7:35 pm-3:25 pm

2 stops14h 50m

$878

PortoAtlanta

OPO - ATL

OPOATL

Porto

Mon 8/24

12:10 pm-1:45 pm

1 stop30h 35m

Atlanta Hartsfield-Jackson

Mon 9/7

3:55 pm-11:15 am

1 stop14h 20m

$884

PortoAtlanta

OPO - ATL

OPOATL

Porto

Mon 8/31

6:00 am-7:29 pm

2 stops18h 29m

Atlanta Hartsfield-Jackson

Mon 9/14

2:33 pm-9:45 am

2 stops14h 12m

$885

PortoAtlanta

OPO - ATL

OPOATL

Porto

Thu 9/24

6:00 am-7:56 pm

2 stops18h 56m

Atlanta Hartsfield-Jackson

Sun 9/27

6:30 am-9:45 am

1 stop22h 15m

$887

PortoAtlanta

OPO - ATL

OPOATL

Porto

Thu 8/27

6:00 am-12:45 am

2 stops23h 45m

Atlanta Hartsfield-Jackson

Wed 9/9

12:55 pm-7:00 am

1 stop13h 05m

$888

PortoAtlanta

OPO - ATL

OPOATL

Porto

Fri 10/16

6:00 am-12:45 am

2 stops23h 45m

Atlanta Hartsfield-Jackson

Fri 10/30

5:30 pm-11:45 am

1 stop14h 15m

$893

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Atlanta from

How to get the cheapest flight ticket from Porto to Atlanta

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Atlanta?

The month of January is, on average, the cheapest month to fly to Atlanta from Porto, with most prices found around $0. If you aren’t able to travel to Atlanta during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $867.

Can stopping save me money on Porto to Atlanta flights?

You could potentially save up to 22% on your flight if you consider stops on a Porto to Atlanta flight.

When to book flights from Porto to Atlanta

Are you open to changing your travel dates? Check out the ideal times to fly from Porto to Atlanta according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Porto to Atlanta (OPO to ATL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to Atlanta

Fastest flight time

18h 56m

Direct flights

None
The fastest flight from Porto to Atlanta takes 18h 56m
There are no direct flights from Porto to Atlanta. There are no popular flight routes from Porto to Atlanta.
Search flight deals

Frequently asked questions about flying from Porto to Atlanta

  • How far is Porto to Atlanta Hartsfield-Jackson by plane?

    The straight-line distance from Porto to Atlanta Hartsfield-Jackson is 4052.2 mi. In terms of flight time, this usually takes a little over 18h 56m.

  • When did momondo last update prices for flights from Porto Airport to Atlanta Hartsfield-Jackson Airport?

    Prices for flights from Porto Airport to Atlanta Hartsfield-Jackson Airport were last updated today.

  • How many operators does momondo search for flights from Porto Airport to Atlanta Hartsfield-Jackson Airport?

  • How old do you have to be to fly from Porto Airport to Atlanta Hartsfield-Jackson Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to Atlanta Hartsfield-Jackson Airport.

  • What documentation or ID do you need to fly to Atlanta Hartsfield-Jackson Airport?

    The required travel and health documents for your Atlanta Hartsfield-Jackson Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Atlanta Hartsfield-Jackson Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Porto to Atlanta?

Best airlines flying from Porto to Atlanta

Compare and see reviews for airlines that fly from Porto to Atlanta with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $871Free CancellationRating
7.8
1,539 reviews
Search KLM flights

Traveling to a place near Atlanta?

Book flights to Atlanta if you plan to visit one of these locations
Helen
Marietta
Duluth
McDonough
Warner Robins
Blue Ridge
Stone Mountain
Cartersville
Lawrenceville
Norcross
Douglasville
Kennesaw
College Park
La Grange
Covington
Conyers
Gainesville
Newnan
Dahlonega
Lithonia

Why use momondo?

Why should I use momondo to find a flight deal from Porto to Atlanta?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Porto to Atlanta. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Porto to Atlanta with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Atlanta from Porto with this policy.

How can momondo help me find flights from Porto to Atlanta?

momondo helps you find the best flight between Porto and Atlanta by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Porto to Atlanta right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Atlanta from Porto. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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