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Cheap flights from Atlanta to Porto from $264

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 3/24. 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
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.
KLM Logo
8:05 pm - 3:25 pm
ATL
-
OPO
14h 20m
1 stop
KLM Logo
7:10 pm - 12:42 pm
OPO
-
ATL
22h 32m
1 stop
$549KLM
Sun, Apr 19 - Thu, Apr 30
Delta Logo
4:30 pm - 3:25 pm
ATL
-
OPO
17h 55m
1 stop
Delta Logo
11:45 am - 11:43 pm
OPO
-
ATL
16h 58m
2 stops
$560Delta
Mon, Apr 20 - Wed, Apr 29
Scandinavian Airlines Logo
7:25 pm - 8:45 am
ATL
-
OPO
32h 20m
1 stop
Scandinavian Airlines Logo
11:50 am - 5:25 pm
OPO
-
ATL
34h 35m
1 stop
$566Scandinavian Airlines
Thu, Apr 23 - Wed, Apr 29
Delta Logo
9:50 pm - 10:00 pm
ATL
-
OPO
19h 10m
1 stop
Delta Logo
5:00 am - 8:25 pm
OPO
-
ATL
20h 25m
1 stop
$570Delta
Sun, Apr 12 - Wed, Apr 22
Delta Logo
3:59 pm - 3:25 pm
ATL
-
OPO
18h 26m
2 stops
Delta Logo
11:30 am - 12:44 pm
OPO
-
ATL
30h 14m
1 stop
$574Delta
Tue, Apr 14 - Tue, Apr 21
Delta Logo
9:50 pm - 10:00 pm
ATL
-
OPO
19h 10m
1 stop
Delta Logo
5:55 am - 7:28 pm
OPO
-
ATL
18h 33m
1 stop
$576Delta
Sun, Apr 12 - Thu, Apr 23
Delta Logo
8:05 pm - 10:00 pm
ATL
-
OPO
20h 55m
1 stop
Delta Logo
5:55 am - 1:55 pm
OPO
-
ATL
13h 00m
1 stop
$577Delta
Sun, Apr 12 - Fri, Apr 24
Delta Logo
3:59 pm - 5:55 pm
ATL
-
OPO
20h 56m
2 stops
Delta Logo
11:30 am - 12:44 pm
OPO
-
ATL
30h 14m
1 stop
$579Delta
Mon, Apr 13 - Tue, Apr 21
Delta Logo
9:50 pm - 10:00 pm
ATL
-
OPO
19h 10m
1 stop
Delta Logo
5:00 am - 8:20 pm
OPO
-
ATL
20h 20m
2 stops
$580Delta
Sun, Apr 12 - Wed, Apr 22
Delta Logo
4:15 pm - 3:25 pm
ATL
-
OPO
18h 10m
2 stops
Delta Logo
5:55 am - 5:25 pm
OPO
-
ATL
16h 30m
1 stop
$581Delta
Mon, Apr 13 - Thu, Apr 23

KLM flights from Atlanta to Porto

Our best KLM deals on Atlanta to Porto flight tickets
KLM
Apr 19
ATL8:05 pmAtlanta Hartsfield-Jackson
14h 20m
1 stop
OPO3:25 pmPorto
Apr 30
OPO7:10 pmPorto
22h 32m
1 stop
ATL12:42 pmAtlanta Hartsfield-Jackson
$549
KLM
Apr 8
ATL10:40 pmAtlanta Hartsfield-Jackson
14h 40m
1 stop
OPO6:20 pmPorto
Apr 15
OPO7:10 pmPorto
22h 34m
1 stop
ATL12:44 pmAtlanta Hartsfield-Jackson
$644
KLM
Mar 4
ATL5:40 pmAtlanta Hartsfield-Jackson
11h 50m
1 stop
OPO10:30 amPorto
Mar 8
OPO11:25 amPorto
32h 35m
1 stop
ATL4:00 pmAtlanta Hartsfield-Jackson
$730

Delta flights from Atlanta to Porto

Our best Delta deals on Atlanta to Porto flight tickets
Delta
Apr 20
ATL4:30 pmAtlanta Hartsfield-Jackson
17h 55m
1 stop
OPO3:25 pmPorto
Apr 29
OPO11:45 amPorto
16h 58m
2 stops
ATL11:43 pmAtlanta Hartsfield-Jackson
$560
Delta
Apr 12
ATL9:50 pmAtlanta Hartsfield-Jackson
19h 10m
1 stop
OPO10:00 pmPorto
Apr 22
OPO5:00 amPorto
20h 25m
1 stop
ATL8:25 pmAtlanta Hartsfield-Jackson
$570
Delta
Apr 14
ATL3:59 pmAtlanta Hartsfield-Jackson
18h 26m
2 stops
OPO3:25 pmPorto
Apr 21
OPO11:30 amPorto
30h 14m
1 stop
ATL12:44 pmAtlanta Hartsfield-Jackson
$574

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 March 1, 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

Sun 4/19

8:05 pm-3:25 pm

1 stop14h 20m

Porto

Thu 4/30

7:10 pm-12:42 pm

1 stop22h 32m

$549

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 4/20

4:30 pm-3:25 pm

1 stop17h 55m

Porto

Wed 4/29

11:45 am-11:43 pm

2 stops16h 58m

$560

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Thu 4/23

7:25 pm-8:45 am

1 stop32h 20m

Porto

Wed 4/29

11:50 am-5:25 pm

1 stop34h 35m

$566

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 4/12

9:50 pm-10:00 pm

1 stop19h 10m

Porto

Wed 4/22

5:00 am-8:25 pm

1 stop20h 25m

$570

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 4/14

3:59 pm-3:25 pm

2 stops18h 26m

Porto

Tue 4/21

11:30 am-12:44 pm

1 stop30h 14m

$574

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 4/12

9:50 pm-10:00 pm

1 stop19h 10m

Porto

Thu 4/23

5:55 am-7:28 pm

1 stop18h 33m

$576

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 4/12

8:05 pm-10:00 pm

1 stop20h 55m

Porto

Fri 4/24

5:55 am-1:55 pm

1 stop13h 00m

$577

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 4/13

3:59 pm-5:55 pm

2 stops20h 56m

Porto

Tue 4/21

11:30 am-12:44 pm

1 stop30h 14m

$579

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 4/12

9:50 pm-10:00 pm

1 stop19h 10m

Porto

Wed 4/22

5:00 am-8:20 pm

2 stops20h 20m

$580

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 4/13

4:15 pm-3:25 pm

2 stops18h 10m

Porto

Thu 4/23

5:55 am-5:25 pm

1 stop16h 30m

$581

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 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 cheapest month to fly to Porto?

The month of March is, on average, the cheapest month to fly to Porto from Atlanta, with most prices found around $603. If you aren’t able to travel during the month of March, then book flights to Porto from Atlanta during February instead. Flights to Porto in February, while not as cheap as those in March, still average around $633.

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 $822 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 $761 on momondo.

Can stopping save me money on Atlanta to Porto flights?

You could potentially save up to 4% on your flight if you consider stops on a Atlanta to Porto flight.

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 55m

Direct flights

None
The fastest flight from Atlanta to Porto takes 11h 55m
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 55m 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 $555Free CancellationRating
7.7
1,461 reviews
Search KLM flights
Air FrancePriceFrom $564Free CancellationRating
7.4
1,541 reviews
Search Air France flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,820 reviews
Search Lufthansa flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,372 reviews
Search United Airlines flights
DeltaPriceFrom $610Free CancellationRating
7.9
8,239 reviews
Search Delta flights
Turkish AirlinesPriceFrom $644Free CancellationRating
7.3
4,240 reviews
Search Turkish Airlines flights
British AirwaysPriceFrom $707Free CancellationRating
6.7
7,773 reviews
Search British Airways 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
Matosinhos
Braga
Aveiro
Esposende
Lamego
Guimarães
Pinhao
Chaves
Espinho
Arcos de Valdevez
Viseu
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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