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Cheap flights from Atlanta to Porto from $256

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 10/20. 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 Atlanta to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
2:45 pm - 11:45 amATL  Atlanta Hartsfield-Jackson-OPO Porto
16h 00m2 stops Chicago O'Hare Intl Madrid Barajas
American Airlines Logo
8:20 am - 9:17 pmOPO  Porto-ATL Atlanta Hartsfield-Jackson
17h 57m2 stops Madrid Barajas Miami
$730American Airlines
Sun, Jan 17 - Wed, Mar 10
American Airlines Logo
12:48 pm - 7:40 amATL  Atlanta Hartsfield-Jackson-OPO Porto
13h 52m2 stops Miami Madrid Barajas
American Airlines Logo
8:20 am - 9:17 pmOPO  Porto-ATL Atlanta Hartsfield-Jackson
17h 57m2 stops Madrid Barajas Miami
$730American Airlines
Sun, Jan 17 - Wed, Mar 10
Delta Logo
5:40 pm - 10:35 amATL  Atlanta Hartsfield-Jackson-OPO Porto
11h 55m1 stop Paris Charles de Gaulle
Delta Logo
5:00 am - 4:57 pmOPO  Porto-ATL Atlanta Hartsfield-Jackson
16h 57m1 stop Amsterdam Schiphol
$768Delta
Sun, Nov 1 - Tue, Nov 10
Delta Logo
3:45 pm - 10:35 amATL  Atlanta Hartsfield-Jackson-OPO Porto
13h 50m1 stop Paris Charles de Gaulle
Delta Logo
5:00 am - 2:57 pmOPO  Porto-ATL Atlanta Hartsfield-Jackson
14h 57m1 stop Amsterdam Schiphol
$768Delta
Sun, Jan 17 - Wed, Mar 10
United Airlines Logo
9:23 am - 9:30 amATL  Atlanta Hartsfield-Jackson-OPO Porto
20h 07m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
6:00 am - 12:35 amOPO  Porto-ATL Atlanta Hartsfield-Jackson
23h 35m2 stops Frankfurt am Main Washington, D.C. Dulles Intl
$782United Airlines
Wed, Oct 28 - Thu, Nov 5
Turkish Airlines Logo
3:05 pm - 3:40 pmATL  Atlanta Hartsfield-Jackson-OPO Porto
19h 35m1 stop Istanbul
Turkish Airlines Logo
4:25 pm - 8:45 pmOPO  Porto-ATL Atlanta Hartsfield-Jackson
32h 20m1 stop Istanbul
$789Turkish Airlines
Tue, Sep 29 - Thu, Oct 29
Turkish Airlines Logo
9:50 pm - 3:45 pmATL  Atlanta Hartsfield-Jackson-OPO Porto
36h 55m1 stop Istanbul
Turkish Airlines Logo
10:40 am - 7:45 pmOPO  Porto-ATL Atlanta Hartsfield-Jackson
38h 05m1 stop Istanbul
$789Turkish Airlines
Wed, Oct 14 - Tue, Oct 20
United Airlines Logo
7:34 pm - 3:20 pmATL  Atlanta Hartsfield-Jackson-OPO Porto
38h 46m2 stops Washington, D.C. Dulles Intl Frankfurt am Main
United Airlines Logo
12:35 pm - 12:24 pmOPO  Porto-ATL Atlanta Hartsfield-Jackson
52h 49m3 stops Frankfurt am Main Detroit Metropolitan Wayne County Chicago O'Hare Intl
$833United Airlines
Sun, Nov 1 - Tue, Nov 10
Air France Logo
8:05 pm - 3:25 pmATL  Atlanta Hartsfield-Jackson-OPO Porto
14h 20m1 stop Paris Charles de Gaulle
Air France Logo
5:55 am - 7:10 pmOPO  Porto-ATL Atlanta Hartsfield-Jackson
18h 15m1 stop Paris Charles de Gaulle
$873Air France
Tue, Sep 22 - Wed, Sep 30
Air France Logo
8:05 pm - 3:30 pmATL  Atlanta Hartsfield-Jackson-OPO Porto
14h 25m1 stop Paris Charles de Gaulle
Air France Logo
5:55 am - 6:40 pmOPO  Porto-ATL Atlanta Hartsfield-Jackson
16h 45m1 stop Paris Charles de Gaulle
$885Air France
Sun, Oct 18 - Sun, Oct 25

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British Airways flights from Atlanta to Porto

Our best British Airways deals on Atlanta to Porto flight tickets
British Airways
Nov 1
ATL10:15 pmAtlanta Hartsfield-Jackson
13h 30m
1 stop
OPO4:45 pmPorto
Nov 10
OPO8:20 amPorto
19h 26m
2 stops
ATL10:46 pmAtlanta Hartsfield-Jackson
$762
British Airways
Dec 28
ATL10:15 pmAtlanta Hartsfield-Jackson
14h 20m
1 stop
OPO5:35 pmPorto
Jan 6
OPO8:40 pmPorto
30h 00m
2 stops
ATL9:40 pmAtlanta Hartsfield-Jackson
$816
British Airways
Dec 28
ATL7:27 pmAtlanta Hartsfield-Jackson
17h 08m
2 stops
OPO5:35 pmPorto
Jan 6
OPO8:40 pmPorto
30h 00m
2 stops
ATL9:40 pmAtlanta Hartsfield-Jackson
$820

Iberia flights from Atlanta to Porto

Our best Iberia deals on Atlanta to Porto flight tickets
Iberia
Nov 1
ATL10:15 pmAtlanta Hartsfield-Jackson
16h 45m
2 stops
OPO8:00 pmPorto
Nov 10
OPO8:20 amPorto
18h 08m
2 stops
ATL9:28 pmAtlanta Hartsfield-Jackson
$765
Iberia
Nov 15
ATL2:45 pmAtlanta Hartsfield-Jackson
16h 00m
2 stops
OPO11:45 amPorto
Feb 13
OPO8:40 pmPorto
27h 16m
2 stops
ATL6:56 pmAtlanta Hartsfield-Jackson
$780
Iberia
Oct 14
ATL10:51 amAtlanta Hartsfield-Jackson
19h 54m
2 stops
OPO11:45 amPorto
Oct 20
OPO12:25 pmPorto
17h 20m
2 stops
ATL12:45 amAtlanta Hartsfield-Jackson
$814

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 August 10, 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

Cheapest round-trip

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Sun 1/17

2:45 pm-11:45 am

2 stops16h 00m

Porto

Wed 3/10

8:20 am-9:17 pm

2 stops17h 57m

$730

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Sun 1/17

12:48 pm-7:40 am

2 stops13h 52m

Porto

Wed 3/10

8:20 am-9:17 pm

2 stops17h 57m

$730

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Sun 11/1

5:40 pm-10:35 am

1 stop11h 55m

Porto

Tue 11/10

5:00 am-4:57 pm

1 stop16h 57m

$768
Quickest round-trip

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Sun 1/17

3:45 pm-10:35 am

1 stop13h 50m

Porto

Wed 3/10

5:00 am-2:57 pm

1 stop14h 57m

$768

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Wed 10/28

9:23 am-9:30 am

2 stops20h 07m

Porto

Thu 11/5

6:00 am-12:35 am

2 stops23h 35m

$782

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Tue 9/29

3:05 pm-3:40 pm

1 stop19h 35m

Porto

Thu 10/29

4:25 pm-8:45 pm

1 stop32h 20m

$789

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Wed 10/14

9:50 pm-3:45 pm

1 stop36h 55m

Porto

Tue 10/20

10:40 am-7:45 pm

1 stop38h 05m

$789

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Sun 11/1

7:34 pm-3:20 pm

2 stops38h 46m

Porto

Tue 11/10

12:35 pm-12:24 pm

3 stops52h 49m

$833

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Tue 9/22

8:05 pm-3:25 pm

1 stop14h 20m

Porto

Wed 9/30

5:55 am-7:10 pm

1 stop18h 15m

$873

AtlantaPorto

ATL Atlanta Hartsfield-Jackson - OPO Porto

ATLOPO

Atlanta Hartsfield-Jackson

Sun 10/18

8:05 pm-3:30 pm

1 stop14h 25m

Porto

Sun 10/25

5:55 am-6:40 pm

1 stop16h 45m

$885

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

Prices are currently low for flights on this route.

Typical prices usually range from $918 to $1,037.
The lowest price recently found on this route was $730.

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 $582. If you aren’t able to travel during the month of March, then book flights to Porto from Atlanta during January instead. Flights to Porto in January, while not as cheap as those in March, still average around $628.

How far in advance should I book a flight from Atlanta 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 $854 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 $764 on momondo.

Can stopping save me money on Atlanta to Porto flights?

You could potentially save up to 47% 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

12h 20m

Direct flights

None
The fastest flight from Atlanta to Porto takes 12h 20m
There are no direct flights from Atlanta to Porto. There are no popular flight routes from Atlanta to Porto.
Search flight deals

Frequently asked questions about flying from Atlanta to Porto

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

    Atlanta Hartsfield-Jackson and Porto are 4052.2 mi apart from one another. 12h 20m 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 $533Free CancellationRating
7.8
1,555 reviews
Search KLM flights
Air FrancePriceFrom $564Free CancellationRating
7.5
1,639 reviews
Search Air France flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
10,099 reviews
Search United Airlines flights
DeltaPriceFrom $610Free CancellationRating
7.8
8,496 reviews
Search Delta flights
Turkish AirlinesPriceFrom $663Free CancellationRating
7.4
4,478 reviews
Search Turkish Airlines 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
Aveiro
Matosinhos
Pinhao
Esposende
Lamego
Chaves
Arcos de Valdevez
Guimarães
Viseu
Espinho
Ponte de Lima
Mesao Frio
Penafiel
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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