Cheap flights from Atlanta to Portugal 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 Portugal departing on 2/21. 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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Fly from
Fly to
Route
Depart
Return
AtlantaPorto
ATL Atlanta Hartsfield-Jackson - OPO Porto
ATLOPO
Atlanta Hartsfield-Jackson
Mon 11/2
1:16 pm-11:00 am
2 stops16h 44m
Porto
Mon 11/9
6:00 pm-12:13 am
2 stops35h 13m
AtlantaPorto
ATL Atlanta Hartsfield-Jackson - OPO Porto
ATLOPO
Atlanta Hartsfield-Jackson
Mon 11/16
1:16 pm-12:30 am
2 stops30h 14m
Porto
Mon 11/23
5:00 am-1:11 am
2 stops25h 11m
AtlantaPorto
ATL Atlanta Hartsfield-Jackson - OPO Porto
ATLOPO
Atlanta Hartsfield-Jackson
Wed 11/11
5:40 pm-10:35 am
1 stop11h 55m
Porto
Wed 11/18
5:00 am-5:10 pm
1 stop17h 10m
AtlantaPorto
ATL Atlanta Hartsfield-Jackson - OPO Porto
ATLOPO
Atlanta Hartsfield-Jackson
Wed 11/11
5:40 pm-10:35 am
1 stop11h 55m
Porto
Tue 2/9
5:00 am-3:05 pm
1 stop15h 05m
AtlantaPorto
ATL Atlanta Hartsfield-Jackson - OPO Porto
ATLOPO
Atlanta Hartsfield-Jackson
Tue 3/9
7:30 am-9:30 am
1 stop21h 00m
Porto
Tue 3/23
6:00 am-7:12 pm
2 stops17h 12m
AtlantaPorto
ATL Atlanta Hartsfield-Jackson - OPO Porto
ATLOPO
Atlanta Hartsfield-Jackson
Tue 3/9
2:30 pm-9:30 am
2 stops38h 00m
Porto
Tue 3/23
6:00 am-7:12 pm
2 stops17h 12m
AtlantaPorto
ATL Atlanta Hartsfield-Jackson - OPO Porto
ATLOPO
Atlanta Hartsfield-Jackson
Tue 3/9
5:40 pm-10:35 am
1 stop11h 55m
Porto
Tue 3/23
11:15 am-9:40 pm
1 stop14h 25m
AtlantaPorto
ATL Atlanta Hartsfield-Jackson - OPO Porto
ATLOPO
Atlanta Hartsfield-Jackson
Tue 11/10
3:50 pm-3:25 pm
1 stop18h 35m
Porto
Tue 11/17
5:00 am-3:00 pm
1 stop15h 00m
AtlantaLisbon
ATL Atlanta Hartsfield-Jackson - LIS Lisbon Humberto Delgado
ATLLIS
Atlanta Hartsfield-Jackson
Sat 1/9
12:55 pm-9:20 am
2 stops39h 25m
Lisbon Humberto Delgado
Wed 1/27
11:20 am-9:21 pm
1 stop15h 01m
AtlantaLisbon
ATL Atlanta Hartsfield-Jackson - LIS Lisbon Humberto Delgado
ATLLIS
Atlanta Hartsfield-Jackson
Fri 2/5
12:55 pm-9:20 am
1 stop15h 25m
Lisbon Humberto Delgado
Fri 2/26
10:55 am-4:33 pm
2 stops34h 38m
See travel insights to Portugal from
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
What is the cheapest month to fly to Portugal?
The cheapest month to fly to Portugal from Atlanta is in February. Flight prices, which tend to average around $667, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from Atlanta during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $704.
How far in advance should I book a flight from Atlanta 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 $940 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 $743 on momondo.
What is the cheapest airline that flies from Atlanta Hartsfield-Jackson to Portugal?
United Airlines, KLM, and Aer Lingus are the most popular carriers operating from Atlanta Hartsfield-Jackson to Portugal
What airlines fly to Portugal?
Delta, United Airlines and British Airways are the top three most popular airlines that fly to Portugal from Atlanta according to our data. Delta is the first choice among our users, with 41% 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.
Cheap Atlanta to Portugal flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Atlanta to Portugal
Frequently asked questions about flying from Atlanta to Portugal
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 October 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 | ||
|---|---|---|---|---|---|
| PriceFrom $457 | Free Cancellation | Rating 7.4 693 reviews | |||
| PriceFrom $483 | Free Cancellation | Rating 6.8 8,263 reviews | |||
| PriceFrom $508 | Free Cancellation | Rating 7.4 2,007 reviews | |||
| PriceFrom $508 | Free Cancellation | Rating 7.4 10,289 reviews | |||
| PriceFrom $513 | Free Cancellation | Rating 7.8 1,580 reviews | |||
| PriceFrom $525 | Free Cancellation | Rating 6.7 8,243 reviews | |||
| PriceFrom $564 | Free Cancellation | Rating 7.5 1,649 reviews | |||
| PriceFrom $580 | Free Cancellation | Rating 7.1 11,729 reviews | |||
| PriceFrom $604 | Free Cancellation | Rating 7.8 8,634 reviews | |||
| PriceFrom $650 | Free Cancellation | Rating 7.0 12,129 reviews |
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.