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Cheap flights from Atlanta to Porto from $220

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 2/3. 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

Scandinavian Airlines Logo
9:00 pm - 4:55 pmATL-OPO
15h 55m1 stop
Scandinavian Airlines Logo
5:35 pm - 5:25 pmOPO-ATL
28h 50m1 stop
$499Scandinavian Airlines
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Thu, Oct 30 - Fri, Nov 14
Scandinavian Airlines Logo
8:00 pm - 4:55 pmATL-OPO
15h 55m1 stop
Scandinavian Airlines Logo
5:35 pm - 5:25 pmOPO-ATL
28h 50m1 stop
$500Scandinavian Airlines
Find Deal
Thu, Nov 13 - Fri, Nov 21
United Airlines Logo
4:32 pm - 9:30 amATL-OPO
11h 58m1 stop
United Airlines Logo
12:35 pm - 8:07 pmOPO-ATL
12h 32m1 stop
$534United Airlines
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Mon, Nov 10 - Fri, Nov 21
United Airlines Logo
4:32 pm - 9:30 amATL-OPO
11h 58m1 stop
United Airlines Logo
12:35 pm - 12:29 amOPO-ATL
16h 54m2 stops
$535United Airlines
Find Deal
Mon, Nov 10 - Thu, Nov 20
Logo
10:14 pm - 3:15 pmATL-OPO
36h 01m2 stops
Logo
11:35 am - 9:02 amOPO-ATL
26h 27m2 stops
$548
Find Deal
Fri, Nov 7 - Wed, Nov 12
Lufthansa Logo
4:55 pm - 2:55 pmATL-OPO
17h 00m1 stop
Lufthansa Logo
6:00 am - 7:16 pmOPO-ATL
18h 16m2 stops
$563Lufthansa
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Mon, Nov 3 - Wed, Feb 25
Delta Logo
12:57 pm - 10:30 amATL-OPO
16h 33m2 stops
Delta Logo
11:10 am - 7:45 pmOPO-ATL
13h 35m1 stop
$567Delta
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Tue, Nov 4 - Tue, Feb 24
Lufthansa Logo
2:42 pm - 11:40 pmATL-OPO
27h 58m2 stops
Lufthansa Logo
6:00 am - 5:36 pmOPO-ATL
16h 36m2 stops
$568Lufthansa
Find Deal
Wed, Nov 5 - Tue, Feb 10
Logo
4:55 pm - 2:45 pmATL-OPO
16h 50m1 stop
Logo
12:05 pm - 9:15 pmOPO-ATL
38h 10m2 stops
$569
Find Deal
Tue, Nov 4 - Mon, Feb 9
Delta Logo
10:45 pm - 10:30 amATL-OPO
30h 45m1 stop
Delta Logo
11:25 am - 11:42 pmOPO-ATL
17h 17m2 stops
$574Delta
Find Deal
Mon, Nov 3 - Wed, Feb 25

Scandinavian Airlines flights from Atlanta to Porto

Our best Scandinavian Airlines deals on Atlanta to Porto flight tickets
Scandinavian Airlines
Oct 30
ATL9:00 pmAtlanta Hartsfield-Jackson
15h 55m
1 stop
OPO4:55 pmPorto
Nov 14
OPO5:35 pmPorto
28h 50m
1 stop
ATL5:25 pmAtlanta Hartsfield-Jackson
$499
Find similar
Scandinavian Airlines
Nov 13
ATL8:00 pmAtlanta Hartsfield-Jackson
15h 55m
1 stop
OPO4:55 pmPorto
Nov 21
OPO5:35 pmPorto
28h 50m
1 stop
ATL5:25 pmAtlanta Hartsfield-Jackson
$500
Find similar
Scandinavian Airlines
Nov 16
ATL8:00 pmAtlanta Hartsfield-Jackson
15h 45m
1 stop
OPO4:45 pmPorto
Nov 21
OPO5:35 pmPorto
28h 50m
1 stop
ATL5:25 pmAtlanta Hartsfield-Jackson
$501
Find similar

KLM flights from Atlanta to Porto

Our best KLM deals on Atlanta to Porto flight tickets
KLM
Sep 24
ATL10:40 pmAtlanta Hartsfield-Jackson
15h 55m
1 stop
OPO7:35 pmPorto
Sep 30
OPO6:50 pmPorto
22h 50m
1 stop
ATL12:40 pmAtlanta Hartsfield-Jackson
$722
Find similar
KLM
Sep 26
ATL9:55 pmAtlanta Hartsfield-Jackson
12h 35m
1 stop
OPO3:30 pmPorto
Oct 4
OPO4:20 pmPorto
25h 51m
1 stop
ATL1:11 pmAtlanta Hartsfield-Jackson
$905
Find similar
KLM
Sep 26
ATL9:55 pmAtlanta Hartsfield-Jackson
12h 35m
1 stop
OPO3:30 pmPorto
Oct 4
OPO4:20 pmPorto
25h 51m
1 stop
ATL1:11 pmAtlanta Hartsfield-Jackson
$957
Find similar

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 September 15, 2025.
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

Thu 10/30

9:00 pm-4:55 pm

1 stop15h 55m

Porto

Fri 11/14

5:35 pm-5:25 pm

1 stop28h 50m

$499

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Thu 11/13

8:00 pm-4:55 pm

1 stop15h 55m

Porto

Fri 11/21

5:35 pm-5:25 pm

1 stop28h 50m

$500

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 11/10

4:32 pm-9:30 am

1 stop11h 58m

Porto

Fri 11/21

12:35 pm-8:07 pm

1 stop12h 32m

$534

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 11/10

4:32 pm-9:30 am

1 stop11h 58m

Porto

Thu 11/20

12:35 pm-12:29 am

2 stops16h 54m

$535

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Fri 11/7

10:14 pm-3:15 pm

2 stops36h 01m

Porto

Wed 11/12

11:35 am-9:02 am

2 stops26h 27m

$548

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 11/3

4:55 pm-2:55 pm

1 stop17h 00m

Porto

Wed 2/25

6:00 am-7:16 pm

2 stops18h 16m

$563

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 11/4

12:57 pm-10:30 am

2 stops16h 33m

Porto

Tue 2/24

11:10 am-7:45 pm

1 stop13h 35m

$567

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 11/5

2:42 pm-11:40 pm

2 stops27h 58m

Porto

Tue 2/10

6:00 am-5:36 pm

2 stops16h 36m

$568

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 11/4

4:55 pm-2:45 pm

1 stop16h 50m

Porto

Mon 2/9

12:05 pm-9:15 pm

2 stops38h 10m

$569

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 11/3

10:45 pm-10:30 am

1 stop30h 45m

Porto

Wed 2/25

11:25 am-11:42 pm

2 stops17h 17m

$574

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 February is, on average, the cheapest month to fly to Porto from Atlanta, with most prices found around $634. 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 $694.

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

The cheapest day to depart on your flight to Porto is on a Tuesday when prices can be found for as low as $936. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,367. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the morning is the cheapest time of day to fly from Atlanta to Porto when you can find flight prices for as low as $855. Flying to Porto in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,205 on average. Flights to Porto from Atlanta in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $929 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 $685 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

Direct flights

None
There are no direct flights from Atlanta to Porto. There are no popular flight routes from Atlanta to Porto.
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  • How far is Atlanta Hartsfield-Jackson to Porto by plane?

    Atlanta Hartsfield-Jackson and Porto are 4052.2 mi apart from one another. 11h 40m 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
7.8
1,385 reviews
Search KLM flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights
DeltaPriceFrom $613Free CancellationRating
7.9
7,956 reviews
Search Delta flights
Turkish AirlinesPriceFrom $626Free CancellationRating
7.3
3,968 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $656Free CancellationRating
7.4
8,931 reviews
Search United Airlines flights
Air FrancePriceFrom $1,065Free CancellationRating
7.4
1,468 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
Aveiro
Coimbra
Braga
Matosinhos
Caminha
Guimarães
Esposende
Lamego
Chaves
Espinho
Arcos de Valdevez
Viseu
Ponte de Lima
Pinhao
Santa Maria da Feira
Curia
Penafiel
Mesao Frio
Mira

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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