What is the cheapest airline that flies from Atlanta Hartsfield-Jackson to Porto?

Lufthansa and United Airlines are the most popular carriers operating from Atlanta Hartsfield-Jackson to Porto

Which layover airport has the shortest connection time from Atlanta to Porto?

New York (JFK) has the shortest average layover time for this route: 1h 47m.

Which layover airport offers the lowest fares from Atlanta to Porto?

Flights via Newark (EWR) offer the lowest average round-trip price of $813.

Which airport is the most popular layover for flights between Atlanta and Porto?

Amsterdam (AMS) was the most common stop: 31% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Porto?

Delta, KLM and United Airlines are the top three most popular airlines that fly to Porto from Atlanta according to our data. Delta is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 6 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Atlanta to Porto?

Flights connecting via New York (JFK) have the shortest average one-way travel time: 10h 40m.

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?

As of August 2026, there are 5 operators available to choose from 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.

$266 Cheap Flights from Atlanta to Porto in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Atlanta to Porto

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:15 pm - 8:00 pm

ATL

OPO

16h 45m

2 stops

8:40 pm - 6:03 pm

OPO

ATL

26h 23m

2 stops

$706Iberia

Mon, Nov 9 - Tue, Nov 17

4:54 pm - 4:00 pm

ATL

OPO

18h 06m

2 stops

8:40 pm - 6:03 pm

OPO

ATL

26h 23m

2 stops

$708Iberia

Wed, Nov 4 - Mon, Nov 16

8:15 pm - 10:00 pm

ATL

OPO

20h 45m

1 stop

5:00 am - 3:20 pm

OPO

ATL

15h 20m

1 stop

$767Delta

Tue, Dec 29 - Fri, Jan 29

8:15 pm - 10:00 pm

ATL

OPO

20h 45m

1 stop

5:00 am - 3:20 pm

OPO

ATL

15h 20m

1 stop

$767Delta

Wed, Jan 13 - Wed, Jan 20

5:40 pm - 10:35 am

ATL

OPO

11h 55m

1 stop

5:00 am - 4:57 pm

OPO

ATL

16h 57m

1 stop

$768KLM

Mon, Nov 9 - Tue, Nov 17

9:50 pm - 3:45 pm

ATL

OPO

36h 55m

1 stop

10:55 am - 8:45 pm

OPO

ATL

37h 50m

1 stop

$786Turkish Airlines

Wed, Oct 14 - Wed, Oct 28

3:05 pm - 3:40 pm

ATL

OPO

19h 35m

1 stop

4:25 pm - 8:45 pm

OPO

ATL

32h 20m

1 stop

$786Turkish Airlines

Tue, Sep 29 - Thu, Oct 29

6:40 pm - 10:35 am

ATL

OPO

11h 55m

1 stop

5:00 am - 2:35 pm

OPO

ATL

13h 35m

1 stop

$818KLM

Mon, Oct 26 - Sun, Nov 1

7:30 am - 9:30 am

ATL

OPO

21h 00m

1 stop

6:00 am - 9:30 pm

OPO

ATL

20h 30m

2 stops

$826United Airlines

Mon, Dec 14 - Tue, Dec 22

2:30 pm - 9:30 am

ATL

OPO

14h 00m

2 stops

6:00 am - 9:30 pm

OPO

ATL

20h 30m

2 stops

$826United Airlines

Mon, Dec 14 - Tue, Dec 22

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United Airlines flights from Atlanta to Porto

Our best United Airlines deals on Atlanta to Porto flight tickets

United Airlines

Dec 14

ATL2:30 pmAtlanta Hartsfield-Jackson

14h 00m

2 stops

OPO9:30 amPorto

Dec 22

OPO6:00 amPorto

20h 30m

2 stops

ATL9:30 pmAtlanta Hartsfield-Jackson

$826

United Airlines

Dec 13

ATL6:59 pmAtlanta Hartsfield-Jackson

33h 31m

2 stops

OPO9:30 amPorto

Dec 22

OPO6:00 amPorto

20h 30m

2 stops

ATL9:30 pmAtlanta Hartsfield-Jackson

$830

United Airlines

Dec 14

ATL2:30 pmAtlanta Hartsfield-Jackson

14h 00m

2 stops

OPO9:30 amPorto

Dec 24

OPO12:35 pmPorto

14h 58m

1 stop

ATL10:33 pmAtlanta Hartsfield-Jackson

$835

Iberia flights from Atlanta to Porto

Our best Iberia deals on Atlanta to Porto flight tickets

Iberia

Nov 9

ATL10:15 pmAtlanta Hartsfield-Jackson

16h 45m

2 stops

OPO8:00 pmPorto

Nov 17

OPO8:40 pmPorto

26h 23m

2 stops

ATL6:03 pmAtlanta Hartsfield-Jackson

$706

Iberia

Nov 1

ATL10:38 amAtlanta Hartsfield-Jackson

16h 02m

2 stops

OPO7:40 amPorto

Nov 11

OPO8:20 amPorto

19h 05m

2 stops

ATL10:25 pmAtlanta Hartsfield-Jackson

$708

Iberia

Dec 13

ATL10:15 pmAtlanta Hartsfield-Jackson

16h 45m

2 stops

OPO8:00 pmPorto

Jan 14

OPO9:55 pmPorto

27h 20m

2 stops

ATL8:15 pmAtlanta Hartsfield-Jackson

$716

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 11/9

10:15 pm-8:00 pm

2 stops16h 45m

Porto

Tue 11/17

8:40 pm-6:03 pm

2 stops26h 23m

$706

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 11/4

4:54 pm-4:00 pm

2 stops18h 06m

Porto

Mon 11/16

8:40 pm-6:03 pm

2 stops26h 23m

$708

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Tue 12/29

8:15 pm-10:00 pm

1 stop20h 45m

Porto

Fri 1/29

5:00 am-3:20 pm

1 stop15h 20m

$767

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 1/13

8:15 pm-10:00 pm

1 stop20h 45m

Porto

Wed 1/20

5:00 am-3:20 pm

1 stop15h 20m

$767

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 11/9

5:40 pm-10:35 am

1 stop11h 55m

Porto

Tue 11/17

5:00 am-4:57 pm

1 stop16h 57m

$768

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Wed 10/14

9:50 pm-3:45 pm

1 stop36h 55m

Porto

Wed 10/28

10:55 am-8:45 pm

1 stop37h 50m

$786

AtlantaPorto

ATL - OPO

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

$786

Quickest round-trip

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 10/26

6:40 pm-10:35 am

1 stop11h 55m

Porto

Sun 11/1

5:00 am-2:35 pm

1 stop13h 35m

$818

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 12/14

7:30 am-9:30 am

1 stop21h 00m

Porto

Tue 12/22

6:00 am-9:30 pm

2 stops20h 30m

$826

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 12/14

2:30 pm-9:30 am

2 stops14h 00m

Porto

Tue 12/22

6:00 am-9:30 pm

2 stops20h 30m

$826

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

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 $917 to $1,037.
The lowest price recently found on this route was $706.

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 $852 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	13h 52m
Direct flights	None

The fastest flight from Atlanta to Porto takes 13h 52m

There are no direct flights from Atlanta to Porto. There are no popular flight routes from Atlanta to Porto.

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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. 13h 52m 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?
As of August 2026, there are 5 operators available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from Atlanta to Porto is Delta, representing 50% of all bookings. The subsequent popular airlines are KLM at 17%, United Airlines at 16%, and Air France at 9%.

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
KLM	PriceFrom $533	Free Cancellation	Rating 7.8 1,552 reviews	Search KLM flights
Air France	PriceFrom $564	Free Cancellation	Rating 7.5 1,633 reviews	Search Air France flights
United Airlines	PriceFrom $592	Free Cancellation	Rating 7.4 10,059 reviews	Search United Airlines flights
Delta	PriceFrom $604	Free Cancellation	Rating 7.8 8,482 reviews	Search Delta flights
Turkish Airlines	PriceFrom $663	Free Cancellation	Rating 7.4 4,463 reviews	Search Turkish Airlines flights

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Coimbra

Braga

Aveiro

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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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Cheap flights from Atlanta to Porto from $266

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.

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United Airlines flights from Atlanta to Porto

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How to get the cheapest flight ticket from Atlanta to Porto

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

What is the cheapest month to fly to Porto?

How far in advance should I book a flight from Atlanta to Porto?

Can stopping save me money on Atlanta to Porto flights?

What is the cheapest airline that flies from Atlanta Hartsfield-Jackson to Porto?

What airlines fly to Porto?

Which airport is the most popular layover for flights between Atlanta and Porto?

Which layover airport offers the lowest fares from Atlanta to Porto?

Which layover airport has the shortest travel time from Atlanta to Porto?

Which layover airport has the shortest connection time from Atlanta to Porto?

When to book flights from Atlanta to Porto

Cheap Atlanta to Porto (ATL to OPO) flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near Porto?

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal

Fly your favorite airline to Porto

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Porto

List of cabin classes available on flights landing in Porto. Availability may vary depending on flight origin and airline.

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