What day of the week experiences the fewest flight delays on this route?

Friday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

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

British Airways, KLM, and Delta are the most popular carriers operating from Atlanta Hartsfield-Jackson to Portugal

How often are flights from Atlanta to Portugal delayed?

Historically, on average around 100% of flights between Atlanta and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 669 minutes.

Which airline has the best punctuality record on Atlanta to Portugal flights?

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 100% of their flights experiencing any sort of delay.

What airlines fly to Portugal?

United Airlines, Delta and British Airways are the top three most popular airlines that fly to Portugal from Atlanta according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 12 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

What is the most punctual flight time for Atlanta to Portugal flights?

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

When did momondo last update prices for flights from Atlanta Hartsfield-Jackson Airport to Portugal?

Prices for flights from Atlanta Hartsfield-Jackson Airport to Portugal are updated daily.

How many operators does momondo search for flights from Atlanta Hartsfield-Jackson Airport to Portugal?

As of January 2026, there are 12 operators available to choose from for flights from Atlanta Hartsfield-Jackson Airport to Portugal.

How old do you have to be to fly from Atlanta Hartsfield-Jackson Airport to Portugal?

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 Portugal.

What documentation or ID do you need to fly to Portugal?

The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$184 Cheap Flights from Atlanta to Portugal in 2026

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One-way

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Cheap round-trip flights

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12:55 pm - 9:20 am

ATL

LIS

15h 25m

2 stops

11:20 am - 9:53 pm

LIS

ATL

15h 33m

1 stop

$430Air Canada

Mon, Jan 19 - Tue, Feb 3

6:10 am - 9:20 am

ATL

LIS

22h 10m

1 stop

11:20 am - 9:53 pm

LIS

ATL

15h 33m

1 stop

$432Air Canada

Mon, Jan 19 - Tue, Feb 3

12:55 pm - 9:20 am

ATL

LIS

15h 25m

2 stops

11:20 am - 9:43 pm

LIS

ATL

15h 23m

2 stops

$435Air Canada

Mon, Jan 19 - Tue, Feb 3

7:30 pm - 10:15 am

ATL

LIS

9h 45m

1 stop

11:20 am - 5:31 pm

LIS

ATL

34h 11m

2 stops

$437United Airlines

Tue, Mar 3 - Thu, Mar 12

7:45 am - 9:30 am

ATL

OPO

20h 45m

1 stop

12:35 pm - 5:59 pm

OPO

ATL

33h 24m

1 stop

$437United Airlines

Mon, Feb 23 - Tue, Mar 10

9:10 am - 4:40 pm

ATL

OPO

26h 30m

2 stops

8:40 pm - 7:16 pm

OPO

ATL

26h 36m

2 stops

$445British Airways

Sun, Feb 22 - Tue, Mar 10

3:59 pm - 8:00 am

ATL

LIS

11h 01m

1 stop

10:00 am - 6:01 pm

LIS

ATL

13h 01m

1 stop

$448Delta

Mon, Jan 19 - Fri, Jan 30

11:06 am - 12:05 pm

ATL

LIS

19h 59m

2 stops

10:40 am - 9:10 pm

LIS

ATL

14h 30m

1 stop

$455British Airways

Mon, Mar 2 - Fri, Mar 13

5:40 pm - 10:30 am

ATL

OPO

11h 50m

1 stop

4:10 pm - 2:45 pm

OPO

ATL

27h 35m

1 stop

$466KLM

Mon, Feb 9 - Mon, Feb 16

12:00 pm - 10:30 am

ATL

OPO

18h 30m

2 stops

5:00 am - 9:45 pm

OPO

ATL

20h 45m

1 stop

$470Delta

Mon, Mar 9 - Thu, Mar 19

United Airlines flights from Atlanta to Portugal

Our best United Airlines deals on Atlanta to Portugal flight tickets

United Airlines

Mar 3

ATL7:30 pmAtlanta Hartsfield-Jackson

9h 45m

1 stop

LIS10:15 amLisbon Humberto Delgado

Mar 12

LIS11:20 amLisbon Humberto Delgado

34h 11m

2 stops

ATL5:31 pmAtlanta Hartsfield-Jackson

$437

United Airlines

Feb 8

ATL1:15 pmAtlanta Hartsfield-Jackson

13h 55m

2 stops

LIS8:10 amLisbon Humberto Delgado

Feb 18

LIS11:20 amLisbon Humberto Delgado

29h 43m

1 stop

ATL12:03 pmAtlanta Hartsfield-Jackson

$460

United Airlines

Mar 3

ATL4:35 pmAtlanta Hartsfield-Jackson

11h 55m

1 stop

OPO9:30 amPorto

Mar 12

OPO12:35 pmPorto

35h 01m

2 stops

ATL7:36 pmAtlanta Hartsfield-Jackson

$461

British Airways flights from Atlanta to Portugal

Our best British Airways deals on Atlanta to Portugal flight tickets

British Airways

Feb 23

ATL8:08 pmAtlanta Hartsfield-Jackson

16h 27m

2 stops

OPO5:35 pmPorto

Mar 10

OPO8:20 amPorto

17h 41m

2 stops

ATL10:01 pmAtlanta Hartsfield-Jackson

$434

British Airways

Mar 9

ATL11:06 amAtlanta Hartsfield-Jackson

23h 49m

2 stops

LIS2:55 pmLisbon Humberto Delgado

Mar 16

LIS12:55 pmLisbon Humberto Delgado

37h 06m

2 stops

ATL10:01 pmAtlanta Hartsfield-Jackson

$458

British Airways

Mar 16

ATL6:00 amAtlanta Hartsfield-Jackson

32h 55m

2 stops

LIS6:55 pmLisbon Humberto Delgado

Mar 25

LIS12:55 pmLisbon Humberto Delgado

36h 15m

1 stop

ATL9:10 pmAtlanta Hartsfield-Jackson

$465

Fly from

Fly to

Route

Depart

Return

Price

AtlantaLisbon

ATL - LIS

ATLLIS

Atlanta Hartsfield-Jackson

Mon 1/19

12:55 pm-9:20 am

2 stops15h 25m

Lisbon Humberto Delgado

Tue 2/3

11:20 am-9:53 pm

1 stop15h 33m

$430

AtlantaLisbon

ATL - LIS

ATLLIS

Atlanta Hartsfield-Jackson

Mon 1/19

6:10 am-9:20 am

1 stop22h 10m

Lisbon Humberto Delgado

Tue 2/3

11:20 am-9:53 pm

1 stop15h 33m

$432

AtlantaLisbon

ATL - LIS

ATLLIS

Atlanta Hartsfield-Jackson

Mon 1/19

12:55 pm-9:20 am

2 stops15h 25m

Lisbon Humberto Delgado

Tue 2/3

11:20 am-9:43 pm

2 stops15h 23m

$435

AtlantaLisbon

ATL - LIS

ATLLIS

Atlanta Hartsfield-Jackson

Tue 3/3

7:30 pm-10:15 am

1 stop9h 45m

Lisbon Humberto Delgado

Thu 3/12

11:20 am-5:31 pm

2 stops34h 11m

$437

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 2/23

7:45 am-9:30 am

1 stop20h 45m

Porto

Tue 3/10

12:35 pm-5:59 pm

1 stop33h 24m

$437

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Sun 2/22

9:10 am-4:40 pm

2 stops26h 30m

Porto

Tue 3/10

8:40 pm-7:16 pm

2 stops26h 36m

$445

AtlantaLisbon

ATL - LIS

ATLLIS

Atlanta Hartsfield-Jackson

Mon 1/19

3:59 pm-8:00 am

1 stop11h 01m

Lisbon Humberto Delgado

Fri 1/30

10:00 am-6:01 pm

1 stop13h 01m

$448

AtlantaLisbon

ATL - LIS

ATLLIS

Atlanta Hartsfield-Jackson

Mon 3/2

11:06 am-12:05 pm

2 stops19h 59m

Lisbon Humberto Delgado

Fri 3/13

10:40 am-9:10 pm

1 stop14h 30m

$455

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 2/9

5:40 pm-10:30 am

1 stop11h 50m

Porto

Mon 2/16

4:10 pm-2:45 pm

1 stop27h 35m

$466

AtlantaPorto

ATL - OPO

ATLOPO

Atlanta Hartsfield-Jackson

Mon 3/9

12:00 pm-10:30 am

2 stops18h 30m

Porto

Thu 3/19

5:00 am-9:45 pm

1 stop20h 45m

$470

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 Portugal

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

Delays

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Atlanta is in January. Flight prices, which tend to average around $657, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Atlanta during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $676.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Atlanta when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $892 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Atlanta for as low as $830 on momondo.

Can stopping save me money on Atlanta to Portugal flights?

You could potentially save up to 67% on your flight if you consider stops on a Atlanta to Portugal flight.

Cheap Atlanta to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Atlanta to Portugal

Fastest flight time	10h 50m
Direct flights	None

The fastest flight from Atlanta to Portugal takes 10h 50m

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

Search flight deals

When did momondo last update prices for flights from Atlanta Hartsfield-Jackson Airport to Portugal?
Prices for flights from Atlanta Hartsfield-Jackson Airport to Portugal are updated daily.
How many operators does momondo search for flights from Atlanta Hartsfield-Jackson Airport to Portugal?
As of January 2026, there are 12 operators available to choose from for flights from Atlanta Hartsfield-Jackson Airport to Portugal.
How old do you have to be to fly from Atlanta Hartsfield-Jackson Airport to Portugal?
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 Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Atlanta to Portugal

Compare and see reviews for airlines that fly from Atlanta to Portugal with momondo

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $484	Free Cancellation	Rating 7.3 1,649 reviews	Search Scandinavian Airlines flights
KLM	PriceFrom $514	Free Cancellation	Rating 7.7 1,437 reviews	Search KLM flights
Lufthansa	PriceFrom $521	Free Cancellation	Rating 6.8 7,711 reviews	Search Lufthansa flights
United Airlines	PriceFrom $554	Free Cancellation	Rating 7.4 9,156 reviews	Search United Airlines flights
British Airways	PriceFrom $561	Free Cancellation	Rating 6.7 7,671 reviews	Search British Airways flights
Virgin Atlantic	PriceFrom $584	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $613	Free Cancellation	Rating 7.9 8,040 reviews	Search Delta flights
Air Canada	PriceFrom $629	Free Cancellation	Rating 7.1 10,619 reviews	Search Air Canada flights
Turkish Airlines	PriceFrom $644	Free Cancellation	Rating 7.3 4,167 reviews	Search Turkish Airlines flights
American Airlines	PriceFrom $669	Free Cancellation	Rating 7.2 11,119 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Atlanta to Portugal?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portugal from Atlanta.

Can I find flights from Atlanta to Portugal with flexible booking policies on momondo?

momondo does allow users to show only those flights to Portugal from Atlanta which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Atlanta to Portugal?

momondo helps you find the best flight between Atlanta and Portugal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Atlanta to Portugal right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Atlanta to Portugal now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portugal and let you know when they change.

An easier way to manage your Portugal 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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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $371

Flights to Portofrom $336

Flights to Funchalfrom $387

Flights to Farofrom $386

Flights to Ponta Delgadafrom $422

Flights to Lajesfrom $421

Flights to Hortafrom $490

Flights to Pico Islandfrom $470

Flights to Porto Santofrom $693

Flights to Velasfrom $482

Atlanta flight routes

Flights from Atlanta Hartsfield-Jackson to Fort Lauderdale

Flights from Atlanta Hartsfield-Jackson to Omaha Eppley Airfield

Flights from Atlanta Hartsfield-Jackson to Memphis

Flights from Atlanta Hartsfield-Jackson to Miami

Flights from Atlanta Hartsfield-Jackson to New York LaGuardia

Flights from Atlanta Hartsfield-Jackson to Newark

Cheap flights from Atlanta to Portugal from $184

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 Portugal departing on 1/19. 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 Portugal

Our best United Airlines deals on Atlanta to Portugal flight tickets

British Airways flights from Atlanta to Portugal

Our best British Airways deals on Atlanta to Portugal flight tickets

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See travel insights to Portugal from

How to get the cheapest flight ticket from Atlanta to Portugal

What is the cheapest month to fly to Portugal?

How far in advance should I book a flight to Portugal?

Can stopping save me money on Atlanta to Portugal flights?

You could potentially save up to 67% on your flight if you consider stops on a Atlanta to Portugal flight.

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

British Airways, KLM, and Delta are the most popular carriers operating from Atlanta Hartsfield-Jackson to Portugal

What airlines fly to Portugal?

How often are flights from Atlanta to Portugal delayed?

Historically, on average around 100% of flights between Atlanta and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 669 minutes.

What is the most punctual flight time for Atlanta to Portugal flights?

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Friday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Atlanta to Portugal flights?

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 100% of their flights experiencing any sort of delay.

Cheap Atlanta to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Atlanta to Portugal

Fastest flight time

Direct flights

When did momondo last update prices for flights from Atlanta Hartsfield-Jackson Airport to Portugal?

How many operators does momondo search for flights from Atlanta Hartsfield-Jackson Airport to Portugal?

How old do you have to be to fly from Atlanta Hartsfield-Jackson Airport to Portugal?

What documentation or ID do you need to fly to Portugal?

Best airlines flying from Atlanta to Portugal

Compare and see reviews for airlines that fly from Atlanta to Portugal with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Atlanta to Portugal?

Can I find flights from Atlanta to Portugal with flexible booking policies on momondo?

How can momondo help me find flights from Atlanta to Portugal?

I’m not ready to book a flight from Atlanta to Portugal right now. Can momondo alert me if prices change?

An easier way to manage your Portugal 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

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo