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Cheap flights from Porto to Atlanta from $637

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to Atlanta departing on 1/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Porto to Atlanta

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:35 am - 9:02 am
OPO
-
ATL
26h 27m2 stops
Multiple Airlines Logo
9:57 am - 3:15 pm
ATL
-
OPO
24h 18m2 stops
$637Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
4:00 pm - 8:51 am
OPO
-
ATL
21h 51m2 stops
Multiple Airlines Logo
7:07 pm - 11:50 am
ATL
-
OPO
11h 43m1 stop
$651Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
8:45 am - 8:11 pm
OPO
-
ATL
40h 26m3 stops
Multiple Airlines Logo
5:25 am - 12:10 pm
ATL
-
OPO
25h 45m3 stops
$711Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
1:40 pm - 8:11 pm
OPO
-
ATL
35h 31m3 stops
Multiple Airlines Logo
5:30 am - 6:05 pm
ATL
-
OPO
31h 35m3 stops
$745Multiple Airlines
Fri, Feb 6 - Sat, Feb 21
Multiple Airlines Logo
6:40 pm - 8:51 am
OPO
-
ATL
19h 11m1 stop
Multiple Airlines Logo
7:07 pm - 11:50 am
ATL
-
OPO
11h 43m1 stop
$765Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
United Airlines Logo
6:00 am - 10:47 am
OPO
-
ATL
33h 47m2 stops
United Airlines Logo
9:20 am - 9:45 am
ATL
-
OPO
19h 25m2 stops
$796United Airlines
Sat, Apr 18 - Fri, May 1
United Airlines Logo
6:00 am - 10:47 am
OPO
-
ATL
33h 47m2 stops
United Airlines Logo
4:05 pm - 3:45 pm
ATL
-
OPO
18h 40m1 stop
$801United Airlines
Sat, Apr 18 - Fri, May 1
SWISS Logo
12:50 pm - 9:15 pm
OPO
-
ATL
37h 25m2 stops
SWISS Logo
3:42 pm - 6:30 pm
ATL
-
OPO
45h 48m2 stops
$805SWISS
Fri, Feb 6 - Sat, Feb 21
Multiple Airlines Logo
12:50 pm - 9:15 pm
OPO
-
ATL
37h 25m2 stops
Multiple Airlines Logo
4:55 pm - 11:40 am
ATL
-
OPO
13h 45m1 stop
$813Multiple Airlines
Fri, Feb 6 - Sat, Feb 21
British Airways Logo
8:20 am - 11:58 pm
OPO
-
ATL
20h 38m2 stops
British Airways Logo
8:15 pm - 7:15 pm
ATL
-
OPO
18h 00m2 stops
$817British Airways
Fri, Feb 6 - Sat, Feb 21

United Airlines flights from Porto to Atlanta

Our best United Airlines deals on Porto to Atlanta flight tickets
United Airlines
Apr 18
OPO6:00 amPorto
33h 47m
2 stops
ATL10:47 amAtlanta Hartsfield-Jackson
May 1
ATL9:20 amAtlanta Hartsfield-Jackson
19h 25m
2 stops
OPO9:45 amPorto
$796
Find similar
United Airlines
Apr 18
OPO6:00 amPorto
33h 47m
2 stops
ATL10:47 amAtlanta Hartsfield-Jackson
May 1
ATL4:05 pmAtlanta Hartsfield-Jackson
18h 40m
1 stop
OPO3:45 pmPorto
$801
Find similar
United Airlines
Mar 23
OPO12:30 pmPorto
31h 00m
1 stop
ATL3:30 pmAtlanta Hartsfield-Jackson
Mar 31
ATL12:37 pmAtlanta Hartsfield-Jackson
16h 08m
1 stop
OPO9:45 amPorto
$810
Find similar

British Airways flights from Porto to Atlanta

Our best British Airways deals on Porto to Atlanta flight tickets
British Airways
Feb 6
OPO8:20 amPorto
20h 38m
2 stops
ATL11:58 pmAtlanta Hartsfield-Jackson
Feb 21
ATL10:10 pmAtlanta Hartsfield-Jackson
16h 05m
1 stop
OPO7:15 pmPorto
$817
Find similar
British Airways
Feb 6
OPO6:05 pmPorto
31h 05m
1 stop
ATL8:10 pmAtlanta Hartsfield-Jackson
Feb 21
ATL10:10 pmAtlanta Hartsfield-Jackson
16h 05m
1 stop
OPO7:15 pmPorto
$846
Find similar

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 December 18, 2025.
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

PortoAtlanta

OPO - ATL

OPOATL

Porto

Tue 1/13

11:35 am-9:02 am

2 stops26h 27m

Atlanta Hartsfield-Jackson

Tue 1/20

9:57 am-3:15 pm

2 stops24h 18m

$637

PortoAtlanta

OPO - ATL

OPOATL

Porto

Tue 1/13

4:00 pm-8:51 am

2 stops21h 51m

Atlanta Hartsfield-Jackson

Tue 1/20

7:07 pm-11:50 am

1 stop11h 43m

$651

PortoAtlanta

OPO - ATL

OPOATL

Porto

Tue 1/13

8:45 am-8:11 pm

3 stops40h 26m

Atlanta Hartsfield-Jackson

Tue 1/20

5:25 am-12:10 pm

3 stops25h 45m

$711

PortoAtlanta

OPO - ATL

OPOATL

Porto

Fri 2/6

1:40 pm-8:11 pm

3 stops35h 31m

Atlanta Hartsfield-Jackson

Sat 2/21

5:30 am-6:05 pm

3 stops31h 35m

$745

PortoAtlanta

OPO - ATL

OPOATL

Porto

Tue 1/13

6:40 pm-8:51 am

1 stop19h 11m

Atlanta Hartsfield-Jackson

Tue 1/20

7:07 pm-11:50 am

1 stop11h 43m

$765

PortoAtlanta

OPO - ATL

OPOATL

Porto

Sat 4/18

6:00 am-10:47 am

2 stops33h 47m

Atlanta Hartsfield-Jackson

Fri 5/1

9:20 am-9:45 am

2 stops19h 25m

$796

PortoAtlanta

OPO - ATL

OPOATL

Porto

Sat 4/18

6:00 am-10:47 am

2 stops33h 47m

Atlanta Hartsfield-Jackson

Fri 5/1

4:05 pm-3:45 pm

1 stop18h 40m

$801

PortoAtlanta

OPO - ATL

OPOATL

Porto

Fri 2/6

12:50 pm-9:15 pm

2 stops37h 25m

Atlanta Hartsfield-Jackson

Sat 2/21

3:42 pm-6:30 pm

2 stops45h 48m

$805

PortoAtlanta

OPO - ATL

OPOATL

Porto

Fri 2/6

12:50 pm-9:15 pm

2 stops37h 25m

Atlanta Hartsfield-Jackson

Sat 2/21

4:55 pm-11:40 am

1 stop13h 45m

$813

PortoAtlanta

OPO - ATL

OPOATL

Porto

Fri 2/6

8:20 am-11:58 pm

2 stops20h 38m

Atlanta Hartsfield-Jackson

Sat 2/21

8:15 pm-7:15 pm

2 stops18h 00m

$817

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 February is, on average, the cheapest month to fly to Atlanta from Porto, with most prices found around $714. If you aren’t able to travel to Atlanta during the month of February, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $790.

What is the cheapest day to depart on your flight to Atlanta?

Our data shows that Thursday is the least expensive day to fly to Atlanta. Tickets to fly out on this day can be as low as $823. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Atlanta on Saturday is $1,373.

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

20h 00m

Direct flights

None
The fastest flight from Porto to Atlanta takes 20h 00m
There are no direct flights from Porto to Atlanta. There are no popular flight routes from Porto to Atlanta.
Search flight deals

  • 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 20h 00m.

  • 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
7.7
1,428 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
McDonough
Duluth
Blue Ridge
Warner Robins
Lawrenceville
Stone Mountain
Dahlonega
Cartersville
Covington
Norcross
Auburn
Gadsden
Conyers
Newnan
Kennesaw
La Grange
Lithonia
Gainesville

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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