Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Atlanta to Porto from $321

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 4/14. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Atlanta to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
4:20 pm - 3:25 pm
ATL
-
OPO
18h 05m
2 stops
Delta Logo
5:00 am - 6:52 pm
OPO
-
ATL
18h 52m
2 stops
$565Delta
Tue, Apr 7 - Tue, Apr 14
Scandinavian Airlines Logo
7:25 pm - 11:00 am
ATL
-
OPO
34h 35m
1 stop
Scandinavian Airlines Logo
5:55 pm - 5:25 pm
OPO
-
ATL
28h 30m
1 stop
$568Scandinavian Airlines
Sat, Apr 25 - Fri, May 8
Multiple Airlines Logo
3:55 pm - 3:40 pm
ATL
-
OPO
18h 45m
1 stop
Multiple Airlines Logo
8:40 am - 5:35 pm
OPO
-
ATL
37h 55m
2 stops
$569Multiple Airlines
Wed, Apr 8 - Tue, Apr 14
Scandinavian Airlines Logo
7:25 pm - 11:00 am
ATL
-
OPO
34h 35m
1 stop
Scandinavian Airlines Logo
5:55 pm - 5:25 pm
OPO
-
ATL
28h 30m
1 stop
$570Scandinavian Airlines
Sat, Apr 25 - Fri, May 8
Iberia Logo
4:49 pm - 8:00 pm
ATL
-
OPO
22h 11m
2 stops
Iberia Logo
8:20 am - 7:27 pm
OPO
-
ATL
16h 07m
2 stops
$571Iberia
Wed, Apr 8 - Wed, Apr 15
Iberia Logo
4:49 pm - 8:00 pm
ATL
-
OPO
22h 11m
2 stops
Iberia Logo
8:20 am - 10:23 pm
OPO
-
ATL
19h 03m
2 stops
$572Iberia
Wed, Apr 8 - Wed, Apr 15
Scandinavian Airlines Logo
7:25 pm - 11:00 am
ATL
-
OPO
34h 35m
1 stop
Scandinavian Airlines Logo
5:55 pm - 5:25 pm
OPO
-
ATL
28h 30m
1 stop
$573Scandinavian Airlines
Sat, Apr 25 - Fri, May 8
United Airlines Logo
11:28 am - 3:25 pm
ATL
-
OPO
23h 57m
2 stops
United Airlines Logo
6:00 am - 10:21 am
OPO
-
ATL
32h 21m
2 stops
$579United Airlines
Wed, Mar 11 - Wed, Mar 18
Scandinavian Airlines Logo
5:05 pm - 6:20 pm
ATL
-
OPO
20h 15m
1 stop
Scandinavian Airlines Logo
11:45 am - 12:44 pm
OPO
-
ATL
29h 59m
1 stop
$582Scandinavian Airlines
Wed, Apr 8 - Wed, Apr 15
United Airlines Logo
3:55 pm - 3:40 pm
ATL
-
OPO
18h 45m
1 stop
United Airlines Logo
12:35 pm - 8:49 pm
OPO
-
ATL
13h 14m
1 stop
$583United Airlines
Wed, Apr 8 - Wed, Apr 15

Delta flights from Atlanta to Porto

Our best Delta deals on Atlanta to Porto flight tickets
Delta
Apr 7
ATL4:20 pmAtlanta Hartsfield-Jackson
18h 05m
2 stops
OPO3:25 pmPorto
Apr 14
OPO5:00 amPorto
20h 22m
2 stops
ATL8:22 pmAtlanta Hartsfield-Jackson
$565
Delta
Apr 8
ATL10:40 pmAtlanta Hartsfield-Jackson
14h 40m
1 stop
OPO6:20 pmPorto
Apr 15
OPO5:00 amPorto
18h 25m
2 stops
ATL6:25 pmAtlanta Hartsfield-Jackson
$604
Delta
Apr 21
ATL10:40 pmAtlanta Hartsfield-Jackson
14h 40m
1 stop
OPO6:20 pmPorto
Apr 28
OPO6:15 amPorto
16h 36m
2 stops
ATL5:51 pmAtlanta Hartsfield-Jackson
$611

KLM flights from Atlanta to Porto

Our best KLM deals on Atlanta to Porto flight tickets
KLM
Apr 8
ATL10:40 pmAtlanta Hartsfield-Jackson
14h 40m
1 stop
OPO6:20 pmPorto
Apr 16
OPO5:00 amPorto
16h 55m
1 stop
ATL4:55 pmAtlanta Hartsfield-Jackson
$594
KLM
Apr 9
ATL8:05 pmAtlanta Hartsfield-Jackson
14h 20m
1 stop
OPO3:25 pmPorto
Apr 15
OPO4:20 pmPorto
25h 24m
1 stop
ATL12:44 pmAtlanta Hartsfield-Jackson
$600
KLM
Mar 22
ATL6:05 pmAtlanta Hartsfield-Jackson
12h 25m
1 stop
OPO10:30 amPorto
Apr 8
OPO4:20 pmPorto
25h 24m
1 stop
ATL12:44 pmAtlanta Hartsfield-Jackson
$605

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 February 14, 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

Tue 4/7

4:20 pm-3:25 pm

2 stops18h 05m

Porto

Tue 4/14

5:00 am-6:52 pm

2 stops18h 52m

$565

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sat 4/25

7:25 pm-11:00 am

1 stop34h 35m

Porto

Fri 5/8

5:55 pm-5:25 pm

1 stop28h 30m

$568

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 4/8

3:55 pm-3:40 pm

1 stop18h 45m

Porto

Tue 4/14

8:40 am-5:35 pm

2 stops37h 55m

$569

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sat 4/25

7:25 pm-11:00 am

1 stop34h 35m

Porto

Fri 5/8

5:55 pm-5:25 pm

1 stop28h 30m

$570

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 4/8

4:49 pm-8:00 pm

2 stops22h 11m

Porto

Wed 4/15

8:20 am-7:27 pm

2 stops16h 07m

$571

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 4/8

4:49 pm-8:00 pm

2 stops22h 11m

Porto

Wed 4/15

8:20 am-10:23 pm

2 stops19h 03m

$572

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sat 4/25

7:25 pm-11:00 am

1 stop34h 35m

Porto

Fri 5/8

5:55 pm-5:25 pm

1 stop28h 30m

$573

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 3/11

11:28 am-3:25 pm

2 stops23h 57m

Porto

Wed 3/18

6:00 am-10:21 am

2 stops32h 21m

$579

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 4/8

5:05 pm-6:20 pm

1 stop20h 15m

Porto

Wed 4/15

11:45 am-12:44 pm

1 stop29h 59m

$582

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 4/8

3:55 pm-3:40 pm

1 stop18h 45m

Porto

Wed 4/15

12:35 pm-8:49 pm

1 stop13h 14m

$583

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $588. 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 $833 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 28% 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

10h 40m

Direct flights

None
The fastest flight from Atlanta to Porto takes 10h 40m
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. 10h 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 $555Free CancellationRating
7.7
1,454 reviews
Search KLM flights
Air FrancePriceFrom $564Free CancellationRating
7.4
1,534 reviews
Search Air France flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,784 reviews
Search Lufthansa flights
DeltaPriceFrom $583Free CancellationRating
7.9
8,200 reviews
Search Delta flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,289 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $644Free CancellationRating
7.3
4,216 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
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

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 3/16
Mon 3/23
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal