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Cheap flights from Atlanta to Porto from $228

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 11/12. 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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Find the cheapest flights from Atlanta to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
12:55 pm - 12:05 pmATL-OPO
18h 10m2 stops
Air Canada Logo
6:00 am - 9:43 pmOPO-ATL
20h 43m2 stops
$502Air Canada
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Thu, Nov 27 - Thu, Dec 4
Air Canada Logo
12:55 pm - 12:50 pmATL-OPO
18h 55m2 stops
Air Canada Logo
6:00 am - 11:43 amOPO-ATL
34h 43m2 stops
$509Air Canada
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Sun, Nov 9 - Sat, Nov 22
KLM Logo
5:40 pm - 10:30 amATL-OPO
11h 50m1 stop
KLM Logo
11:15 am - 8:45 pmOPO-ATL
14h 30m1 stop
$526KLM
Find Deal
Tue, Nov 11 - Wed, Nov 19
KLM Logo
3:50 pm - 10:25 amATL-OPO
13h 35m1 stop
KLM Logo
9:25 am - 8:45 pmOPO-ATL
16h 20m1 stop
$527KLM
Find Deal
Thu, Nov 13 - Sat, Nov 22
Delta Logo
11:30 am - 10:25 amATL-OPO
17h 55m2 stops
Delta Logo
6:35 am - 4:55 pmOPO-ATL
15h 20m1 stop
$530Delta
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Thu, Nov 13 - Thu, Nov 20
Delta Logo
2:50 pm - 10:30 amATL-OPO
14h 40m2 stops
Delta Logo
6:30 am - 8:45 pmOPO-ATL
19h 15m1 stop
$531Delta
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Mon, Nov 10 - Mon, Nov 24
United Airlines Logo
4:47 pm - 9:30 amATL-OPO
11h 43m1 stop
United Airlines Logo
6:00 am - 12:29 amOPO-ATL
23h 29m2 stops
$533United Airlines
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Thu, Nov 13 - Fri, Nov 21
United Airlines Logo
9:35 am - 9:30 amATL-OPO
18h 55m2 stops
United Airlines Logo
12:35 pm - 8:07 pmOPO-ATL
12h 32m1 stop
$534United Airlines
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Tue, Nov 11 - Mon, Nov 24
Lufthansa Logo
1:26 pm - 11:40 pmATL-OPO
29h 14m2 stops
Lufthansa Logo
6:00 am - 7:42 pmOPO-ATL
18h 42m2 stops
$535Lufthansa
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Thu, Nov 13 - Sat, Nov 22
Lufthansa Logo
2:42 pm - 11:40 amATL-OPO
15h 58m2 stops
Lufthansa Logo
6:00 am - 7:42 pmOPO-ATL
18h 42m2 stops
$552Lufthansa
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Wed, Nov 12 - Fri, Nov 21

Air Canada flights from Atlanta to Porto

Our best Air Canada deals on Atlanta to Porto flight tickets
Air Canada
Nov 27
ATL12:55 pmAtlanta Hartsfield-Jackson
18h 10m
2 stops
OPO12:05 pmPorto
Dec 4
OPO6:00 amPorto
20h 43m
2 stops
ATL9:43 pmAtlanta Hartsfield-Jackson
$502
Find similar
Air Canada
Nov 9
ATL12:55 pmAtlanta Hartsfield-Jackson
18h 55m
2 stops
OPO12:50 pmPorto
Nov 22
OPO6:00 amPorto
34h 43m
2 stops
ATL11:43 amAtlanta Hartsfield-Jackson
$509
Find similar
Air Canada
Nov 13
ATL12:55 pmAtlanta Hartsfield-Jackson
18h 10m
2 stops
OPO12:05 pmPorto
Nov 21
OPO6:30 amPorto
20h 13m
2 stops
ATL9:43 pmAtlanta Hartsfield-Jackson
$529
Find similar

KLM flights from Atlanta to Porto

Our best KLM deals on Atlanta to Porto flight tickets
KLM
Nov 11
ATL5:40 pmAtlanta Hartsfield-Jackson
11h 50m
1 stop
OPO10:30 amPorto
Nov 19
OPO11:15 amPorto
14h 30m
1 stop
ATL8:45 pmAtlanta Hartsfield-Jackson
$526
Find similar
KLM
Nov 13
ATL3:50 pmAtlanta Hartsfield-Jackson
13h 35m
1 stop
OPO10:25 amPorto
Nov 22
OPO9:25 amPorto
16h 20m
1 stop
ATL8:45 pmAtlanta Hartsfield-Jackson
$527
Find similar
KLM
Nov 3
ATL3:50 pmAtlanta Hartsfield-Jackson
13h 40m
1 stop
OPO10:30 amPorto
Feb 24
OPO11:15 amPorto
14h 30m
1 stop
ATL8:45 pmAtlanta Hartsfield-Jackson
$576
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 October 14, 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 11/27

12:55 pm-12:05 pm

2 stops18h 10m

Porto

Thu 12/4

6:00 am-9:43 pm

2 stops20h 43m

$502

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 11/9

12:55 pm-12:50 pm

2 stops18h 55m

Porto

Sat 11/22

6:00 am-11:43 am

2 stops34h 43m

$509

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 11/11

5:40 pm-10:30 am

1 stop11h 50m

Porto

Wed 11/19

11:15 am-8:45 pm

1 stop14h 30m

$526

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Thu 11/13

3:50 pm-10:25 am

1 stop13h 35m

Porto

Sat 11/22

9:25 am-8:45 pm

1 stop16h 20m

$527

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Thu 11/13

11:30 am-10:25 am

2 stops17h 55m

Porto

Thu 11/20

6:35 am-4:55 pm

1 stop15h 20m

$530

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 11/10

2:50 pm-10:30 am

2 stops14h 40m

Porto

Mon 11/24

6:30 am-8:45 pm

1 stop19h 15m

$531

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Thu 11/13

4:47 pm-9:30 am

1 stop11h 43m

Porto

Fri 11/21

6:00 am-12:29 am

2 stops23h 29m

$533

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 11/11

9:35 am-9:30 am

2 stops18h 55m

Porto

Mon 11/24

12:35 pm-8:07 pm

1 stop12h 32m

$534

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Thu 11/13

1:26 pm-11:40 pm

2 stops29h 14m

Porto

Sat 11/22

6:00 am-7:42 pm

2 stops18h 42m

$535

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 11/12

2:42 pm-11:40 am

2 stops15h 58m

Porto

Fri 11/21

6:00 am-7:42 pm

2 stops18h 42m

$552

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 January instead. Flights to Porto in January, while not as cheap as those in February, still average around $695.

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 $900 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 43m 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
1,402 reviews
Search KLM flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,487 reviews
Search Lufthansa flights
DeltaPriceFrom $611Free CancellationRating
7.9
7,972 reviews
Search Delta flights
Turkish AirlinesPriceFrom $638Free CancellationRating
7.3
4,009 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $656Free CancellationRating
7.4
8,975 reviews
Search United Airlines flights
Air FrancePriceFrom $1,065Free CancellationRating
7.4
1,475 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
Aveiro
Braga
Matosinhos
Caminha
Esposende
Lamego
Guimarães
Chaves
Espinho
Viseu
Ponte de Lima
Arcos de Valdevez
Pinhao
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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