Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Atlanta to Porto from $294

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 5/18. 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.
Lufthansa Logo
1:33 pm - 11:25 pm
ATL
-
OPO
28h 52m
2 stops
Lufthansa Logo
6:20 am - 1:45 pm
OPO
-
ATL
36h 25m
2 stops
$541Lufthansa
Mon, Apr 27 - Thu, Apr 30
Multiple Airlines Logo
7:02 pm - 11:50 am
ATL
-
OPO
12h 48m
1 stop
Multiple Airlines Logo
6:40 pm - 8:11 am
OPO
-
ATL
17h 31m
1 stop
$542Multiple Airlines
Mon, Mar 16 - Tue, Mar 24
Multiple Airlines Logo
12:10 pm - 11:15 am
ATL
-
OPO
19h 05m
2 stops
Multiple Airlines Logo
4:15 pm - 3:30 pm
OPO
-
ATL
27h 15m
1 stop
$548Multiple Airlines
Mon, Mar 16 - Tue, Mar 24
Scandinavian Airlines Logo
7:25 pm - 8:40 am
ATL
-
OPO
32h 15m
1 stop
Scandinavian Airlines Logo
5:55 pm - 5:25 pm
OPO
-
ATL
28h 30m
1 stop
$553Scandinavian Airlines
Thu, Apr 23 - Fri, May 1
Delta Logo
12:31 pm - 10:30 am
ATL
-
OPO
16h 59m
2 stops
Delta Logo
5:00 am - 3:40 pm
OPO
-
ATL
14h 40m
1 stop
$555Delta
Wed, Feb 25 - Wed, Mar 11
KLM Logo
8:20 pm - 7:20 pm
ATL
-
OPO
18h 00m
1 stop
KLM Logo
5:00 am - 5:50 pm
OPO
-
ATL
16h 50m
1 stop
$556KLM
Wed, Feb 25 - Wed, Mar 11
KLM Logo
5:15 pm - 10:30 am
ATL
-
OPO
12h 15m
1 stop
KLM Logo
5:00 am - 3:40 pm
OPO
-
ATL
14h 40m
1 stop
$557KLM
Tue, Mar 3 - Thu, Mar 12
Delta Logo
12:59 pm - 10:40 am
ATL
-
OPO
16h 41m
2 stops
Delta Logo
5:00 am - 2:00 pm
OPO
-
ATL
14h 00m
1 stop
$559Delta
Wed, Apr 8 - Wed, Apr 15
Delta Logo
7:15 pm - 3:25 pm
ATL
-
OPO
15h 10m
2 stops
Delta Logo
5:00 am - 6:25 pm
OPO
-
ATL
18h 25m
2 stops
$564Delta
Wed, Apr 8 - Wed, Apr 15
Delta Logo
11:45 am - 10:30 am
ATL
-
OPO
17h 45m
2 stops
Delta Logo
5:00 am - 8:19 pm
OPO
-
ATL
19h 19m
2 stops
$565Delta
Wed, Feb 25 - Wed, Mar 11

Delta flights from Atlanta to Porto

Our best Delta deals on Atlanta to Porto flight tickets
Delta
Feb 25
ATL12:31 pmAtlanta Hartsfield-Jackson
16h 59m
2 stops
OPO10:30 amPorto
Mar 11
OPO5:00 amPorto
14h 40m
1 stop
ATL3:40 pmAtlanta Hartsfield-Jackson
$555
Delta
Apr 8
ATL12:59 pmAtlanta Hartsfield-Jackson
16h 41m
2 stops
OPO10:40 amPorto
Apr 15
OPO5:00 amPorto
14h 00m
1 stop
ATL2:00 pmAtlanta Hartsfield-Jackson
$559
Delta
Apr 8
ATL7:15 pmAtlanta Hartsfield-Jackson
15h 10m
2 stops
OPO3:25 pmPorto
Apr 15
OPO5:00 amPorto
18h 25m
2 stops
ATL6:25 pmAtlanta Hartsfield-Jackson
$564

KLM flights from Atlanta to Porto

Our best KLM deals on Atlanta to Porto flight tickets
KLM
Feb 25
ATL8:20 pmAtlanta Hartsfield-Jackson
18h 00m
1 stop
OPO7:20 pmPorto
Mar 11
OPO5:00 amPorto
16h 50m
1 stop
ATL5:50 pmAtlanta Hartsfield-Jackson
$556
KLM
Mar 3
ATL5:15 pmAtlanta Hartsfield-Jackson
12h 15m
1 stop
OPO10:30 amPorto
Mar 12
OPO5:00 amPorto
14h 40m
1 stop
ATL3:40 pmAtlanta Hartsfield-Jackson
$557
KLM
Mar 22
ATL6:05 pmAtlanta Hartsfield-Jackson
17h 20m
1 stop
OPO3:25 pmPorto
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 January 29, 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

Mon 4/27

1:33 pm-11:25 pm

2 stops28h 52m

Porto

Thu 4/30

6:20 am-1:45 pm

2 stops36h 25m

$541

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 3/16

7:02 pm-11:50 am

1 stop12h 48m

Porto

Tue 3/24

6:40 pm-8:11 am

1 stop17h 31m

$542

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 3/16

12:10 pm-11:15 am

2 stops19h 05m

Porto

Tue 3/24

4:15 pm-3:30 pm

1 stop27h 15m

$548

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Thu 4/23

7:25 pm-8:40 am

1 stop32h 15m

Porto

Fri 5/1

5:55 pm-5:25 pm

1 stop28h 30m

$553

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 2/25

12:31 pm-10:30 am

2 stops16h 59m

Porto

Wed 3/11

5:00 am-3:40 pm

1 stop14h 40m

$555

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 2/25

8:20 pm-7:20 pm

1 stop18h 00m

Porto

Wed 3/11

5:00 am-5:50 pm

1 stop16h 50m

$556

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 3/3

5:15 pm-10:30 am

1 stop12h 15m

Porto

Thu 3/12

5:00 am-3:40 pm

1 stop14h 40m

$557

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 4/8

12:59 pm-10:40 am

2 stops16h 41m

Porto

Wed 4/15

5:00 am-2:00 pm

1 stop14h 00m

$559

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 4/8

7:15 pm-3:25 pm

2 stops15h 10m

Porto

Wed 4/15

5:00 am-6:25 pm

2 stops18h 25m

$564

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 2/25

11:45 am-10:30 am

2 stops17h 45m

Porto

Wed 3/11

5:00 am-8:19 pm

2 stops19h 19m

$565

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 February is, on average, the cheapest month to fly to Porto from Atlanta, with most prices found around $579. 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 $623.

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 $842 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 $666 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

Fastest flight time

12h 48m

Direct flights

None
The fastest flight from Atlanta to Porto takes 12h 48m
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. 12h 48m 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
1,443 reviews
Search KLM flights
LufthansaPriceFrom $568Free CancellationRating
6.8
7,754 reviews
Search Lufthansa flights
DeltaPriceFrom $583Free CancellationRating
7.9
8,128 reviews
Search Delta flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
Turkish AirlinesPriceFrom $644Free CancellationRating
7.3
4,208 reviews
Search Turkish Airlines flights
Air FrancePriceFrom $838Free CancellationRating
7.4
1,528 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
Braga
Aveiro
Matosinhos
Esposende
Lamego
Guimarães
Espinho
Chaves
Pinhao
Arcos de Valdevez
Ponte de Lima
Viseu
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
Sat 2/28
Sat 3/7
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal