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Cheap flights from Atlanta to Porto from $208

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Atlanta to Porto departing on 1/19. 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 Atlanta to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:20 am - 9:30 am
ATL
-
OPO
22h 10m1 stop
United Airlines Logo
12:35 pm - 11:47 pm
OPO
-
ATL
15h 12m1 stop
$437United Airlines
Mon, Feb 23 - Tue, Mar 10
United Airlines Logo
4:41 pm - 9:30 am
ATL
-
OPO
12h 49m1 stop
United Airlines Logo
12:35 pm - 10:40 am
OPO
-
ATL
26h 05m2 stops
$450United Airlines
Mon, Mar 9 - Thu, Mar 19
Multiple Airlines Logo
10:10 pm - 8:00 pm
ATL
-
OPO
16h 50m2 stops
Multiple Airlines Logo
8:20 am - 10:01 pm
OPO
-
ATL
17h 41m2 stops
$453Multiple Airlines
Tue, Mar 3 - Thu, Mar 12
Iberia Logo
6:32 am - 7:40 am
ATL
-
OPO
20h 08m2 stops
Iberia Logo
9:55 pm - 9:22 pm
OPO
-
ATL
28h 27m2 stops
$458Iberia
Wed, Feb 18 - Mon, Feb 23
United Airlines Logo
4:35 pm - 9:30 am
ATL
-
OPO
11h 55m1 stop
United Airlines Logo
6:00 am - 9:43 pm
OPO
-
ATL
43h 43m2 stops
$460United Airlines
Tue, Mar 3 - Thu, Mar 12
Iberia Logo
10:17 am - 7:40 am
ATL
-
OPO
16h 23m2 stops
Iberia Logo
8:40 pm - 11:58 pm
OPO
-
ATL
31h 18m2 stops
$461Iberia
Tue, Mar 3 - Thu, Mar 12
United Airlines Logo
4:35 pm - 9:30 am
ATL
-
OPO
11h 55m1 stop
United Airlines Logo
12:35 pm - 2:49 pm
OPO
-
ATL
30h 14m2 stops
$462United Airlines
Tue, Mar 3 - Thu, Mar 12
Air France Logo
5:40 pm - 10:30 am
ATL
-
OPO
11h 50m1 stop
Air France Logo
11:20 am - 8:40 pm
OPO
-
ATL
13h 20m1 stop
$464Air France
Tue, Mar 3 - Thu, Mar 12
KLM Logo
4:30 pm - 3:25 pm
ATL
-
OPO
17h 55m1 stop
KLM Logo
5:55 am - 1:55 pm
OPO
-
ATL
13h 00m1 stop
$465KLM
Mon, Apr 13 - Thu, Apr 23
KLM Logo
5:40 pm - 10:30 am
ATL
-
OPO
11h 50m1 stop
KLM Logo
4:10 pm - 4:55 pm
OPO
-
ATL
29h 45m1 stop
$466KLM
Mon, Jan 19 - Mon, Feb 2

United Airlines flights from Atlanta to Porto

Our best United Airlines deals on Atlanta to Porto flight tickets
United Airlines
Feb 23
ATL7:30 pmAtlanta Hartsfield-Jackson
33h 00m
2 stops
OPO9:30 amPorto
Mar 10
OPO12:35 pmPorto
25h 46m
2 stops
ATL10:21 amAtlanta Hartsfield-Jackson
$437
United Airlines
Mar 9
ATL8:15 amAtlanta Hartsfield-Jackson
21h 15m
2 stops
OPO9:30 amPorto
Mar 19
OPO12:35 pmPorto
26h 05m
2 stops
ATL10:40 amAtlanta Hartsfield-Jackson
$450
United Airlines
Mar 3
ATL4:35 pmAtlanta Hartsfield-Jackson
11h 55m
1 stop
OPO9:30 amPorto
Mar 12
OPO6:00 amPorto
43h 43m
2 stops
ATL9:43 pmAtlanta Hartsfield-Jackson
$460

KLM flights from Atlanta to Porto

Our best KLM deals on Atlanta to Porto flight tickets
KLM
Apr 13
ATL4:30 pmAtlanta Hartsfield-Jackson
17h 55m
1 stop
OPO3:25 pmPorto
Apr 23
OPO5:55 amPorto
13h 00m
1 stop
ATL1:55 pmAtlanta Hartsfield-Jackson
$465
KLM
Jan 19
ATL5:40 pmAtlanta Hartsfield-Jackson
11h 50m
1 stop
OPO10:30 amPorto
Feb 2
OPO4:10 pmPorto
29h 45m
1 stop
ATL4:55 pmAtlanta Hartsfield-Jackson
$466
KLM
Mar 22
ATL6:40 pmAtlanta Hartsfield-Jackson
11h 50m
1 stop
OPO10:30 amPorto
Apr 8
OPO7:00 pmPorto
24h 00m
1 stop
ATL2:00 pmAtlanta Hartsfield-Jackson
$515

momondo Fare Finder

 
Customize your flight search to find flights from Atlanta to Porto 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 January 8, 2026.
Use the filters below to find and compare flights from Atlanta to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 2/23

6:20 am-9:30 am

1 stop22h 10m

Porto

Tue 3/10

12:35 pm-11:47 pm

1 stop15h 12m

$437

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 3/9

4:41 pm-9:30 am

1 stop12h 49m

Porto

Thu 3/19

12:35 pm-10:40 am

2 stops26h 05m

$450

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 3/3

10:10 pm-8:00 pm

2 stops16h 50m

Porto

Thu 3/12

8:20 am-10:01 pm

2 stops17h 41m

$453

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 2/18

6:32 am-7:40 am

2 stops20h 08m

Porto

Mon 2/23

9:55 pm-9:22 pm

2 stops28h 27m

$458

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 3/3

4:35 pm-9:30 am

1 stop11h 55m

Porto

Thu 3/12

6:00 am-9:43 pm

2 stops43h 43m

$460

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 3/3

10:17 am-7:40 am

2 stops16h 23m

Porto

Thu 3/12

8:40 pm-11:58 pm

2 stops31h 18m

$461

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 3/3

4:35 pm-9:30 am

1 stop11h 55m

Porto

Thu 3/12

12:35 pm-2:49 pm

2 stops30h 14m

$462

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 3/3

5:40 pm-10:30 am

1 stop11h 50m

Porto

Thu 3/12

11:20 am-8:40 pm

1 stop13h 20m

$464

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 4/13

4:30 pm-3:25 pm

1 stop17h 55m

Porto

Thu 4/23

5:55 am-1:55 pm

1 stop13h 00m

$465

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 1/19

5:40 pm-10:30 am

1 stop11h 50m

Porto

Mon 2/2

4:10 pm-4:55 pm

1 stop29h 45m

$466

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Porto from

How to get the cheapest flight ticket from Atlanta to Porto

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 typical price of a round-trip flight between Atlanta and Porto?

What is the cheapest month to fly to Porto?

The month of February is, on average, the cheapest month to fly to Porto from Atlanta, with most prices found around $608. If you aren’t able to travel during the month of February, then book flights to Porto from Atlanta during March instead. Flights to Porto in March, while not as cheap as those in February, still average around $624.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from Atlanta when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $851 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Atlanta for as low as $666 on momondo.

When to book flights from Atlanta to Porto

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

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

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

Fastest flight time

11h 50m

Direct flights

None
The fastest flight from Atlanta to Porto takes 11h 50m
There are no direct flights from Atlanta to Porto. There are no popular flight routes from Atlanta to Porto.
Search flight deals

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

    Atlanta Hartsfield-Jackson and Porto are 4052.2 mi apart from one another. 11h 50m is a normal flight duration for this route.

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

    Prices for flights from Atlanta Hartsfield-Jackson Airport to Porto Airport are updated daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Atlanta Hartsfield-Jackson Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Atlanta to Porto

Compare and see reviews for airlines that fly from Atlanta to Porto with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $561Free CancellationRating
7.7
1,434 reviews
Search KLM flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,692 reviews
Search Lufthansa flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,139 reviews
Search United Airlines flights
DeltaPriceFrom $613Free CancellationRating
7.9
8,025 reviews
Search Delta flights
Turkish AirlinesPriceFrom $644Free CancellationRating
7.3
4,150 reviews
Search Turkish Airlines flights
Air FrancePriceFrom $838Free CancellationRating
7.4
1,519 reviews
Search Air France flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Matosinhos
Aveiro
Esposende
Lamego
Guimarães
Chaves
Espinho
Viseu
Pinhao
Arcos de Valdevez
Ponte de Lima
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

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

It is quick and easy to find Atlanta to Porto flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Porto that suits you.

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

Flights from Atlanta to Porto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Porto from Atlanta.

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

If you are simply researching potential flights to Porto, momondo offers a useful price alert feature which will track prices for flights to Porto from Atlanta and alert you when they change.

An easier way to manage your Porto trip

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