$304+ Cheap flights from Atlanta (ATL) to Porto (OPO)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — OPO
Jul 12 — Jul 191
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Atlanta to Porto with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Atlanta to Porto
Cheapest
Best
Last-minute
One-way
Cheapest flights from Atlanta to PortoExplore the most affordable flight options available from Atlanta to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2026.
Explore the most affordable flight options available from Atlanta to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2026.
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/31:20 pm
ATL
- OPO
2 stops17h 25m
American Airlines
Wed 11/118:20 am
OPO
- ATL
2 stops19h 36m
American Airlines
Deal found 6/12![American Airlines logo]()
$730
This Expedia deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/86:35 pm
ATL
- OPO
2 stops22h 25m
Scandinavian Airlines
Sun 11/155:35 pm
OPO
- ATL
1 stop29h 25m
Scandinavian Airlines
Deal found 6/9![Scandinavian Airlines logo]()
$735
This KLM deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:40 pm
ATL
- OPO
1 stop11h 50m
KLM
Wed 11/114:10 pm
OPO
- ATL
1 stop26h 25m
KLM
Deal found 6/12![KLM logo]()
$769
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:50 pm
ATL
- OPO
1 stop10h 40m
United Airlines
Wed 11/116:00 am
OPO
- ATL
2 stops19h 04m
United Airlines
Deal found 6/12![United Airlines logo]()
$777
This Iberia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:38 pm
ATL
- OPO
2 stops16h 22m
Iberia
Wed 11/118:20 am
OPO
- ATL
2 stops20h 37m
Iberia
Deal found 6/10![Iberia logo]()
$780
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:56 am
ATL
- OPO
2 stops15h 44m
American Airlines
Wed 10/218:20 am
OPO
- ATL
2 stops16h 19m
American Airlines
Deal found 6/11![American Airlines logo]()
$786
This eDestinos deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:50 pm
ATL
- OPO
1 stop30h 55m
Turkish Airlines
Mon 12/144:25 pm
OPO
- ATL
1 stop32h 20m
Turkish Airlines
Deal found 6/11![Turkish Airlines logo]()
$789
This Orbitz deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:00 pm
ATL
- OPO
2 stops21h 00m
Scandinavian Airlines
Sat 11/1412:00 pm
OPO
- ATL
1 stop33h 30m
Scandinavian Airlines
Deal found 6/9![Scandinavian Airlines logo]()
$795
This Orbitz deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:57 am
ATL
- OPO
2 stops19h 48m
Iberia
Mon 10/198:40 pm
OPO
- ATL
2 stops27h 49m
Iberia
Deal found 6/8![Iberia logo]()
$797
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:50 pm
ATL
- OPO
1 stop30h 55m
Turkish Airlines
Wed 10/710:45 am
OPO
- ATL
1 stop38h 00m
Turkish Airlines
Deal found 6/10![Turkish Airlines logo]()
$802
This FlightHub deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/179:50 pm
ATL
- OPO
1 stop36h 50m
Turkish Airlines
Wed 8/264:40 pm
OPO
- ATL
1 stop32h 05m
Turkish Airlines
Deal found 6/8![Turkish Airlines logo]()
$803
This British Airways deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/142:05 pm
ATL
- OPO
2 stops20h 55m
Multiple Airlines
Mon 10/198:40 pm
OPO
- ATL
2 stops27h 38m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$810
Best flights from Atlanta to PortoDiscover carefully curated flight deals from Atlanta to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2026.
Discover carefully curated flight deals from Atlanta to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2026.
This KLM deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/62:00 pm
ATL
- OPO
1 stop14h 05m
KLM
Wed 11/114:10 pm
OPO
- ATL
1 stop26h 25m
KLM
Deal found 6/12![KLM logo]()
$819
This Turkish Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:50 pm
ATL
- OPO
1 stop30h 55m
Turkish Airlines
Wed 9/3010:45 am
OPO
- ATL
1 stop38h 00m
Turkish Airlines
Deal found 6/8![Turkish Airlines logo]()
$863
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:12 pm
ATL
- OPO
2 stops16h 13m
Delta
Mon 10/195:00 am
OPO
- ATL
1 stop17h 07m
Delta
Deal found 6/12![Delta logo]()
$882
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:57 pm
ATL
- OPO
2 stops53h 53m
United Airlines
Wed 9/306:00 am
OPO
- ATL
3 stops35h 27m
United Airlines
Deal found 6/10![United Airlines logo]()
$897
This Turkish Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/109:50 pm
ATL
- OPO
1 stop30h 55m
Turkish Airlines
Mon 9/1410:40 am
OPO
- ATL
1 stop31h 20m
Turkish Airlines
Deal found 6/12![Turkish Airlines logo]()
$873
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:30 am
ATL
- OPO
2 stops19h 45m
United Airlines
Tue 7/2112:15 pm
OPO
- ATL
2 stops41h 15m
United Airlines
Deal found 6/7![United Airlines logo]()
$919
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/154:30 pm
ATL
- OPO
1 stop17h 55m
Delta
Thu 10/15:55 am
OPO
- ATL
1 stop12h 55m
Delta
Deal found 6/8![Delta logo]()
$924
This Turkish Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:05 pm
ATL
- OPO
1 stop37h 35m
Turkish Airlines
Fri 10/1610:40 am
OPO
- ATL
1 stop31h 20m
Turkish Airlines
Deal found 6/11![Turkish Airlines logo]()
$903
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/165:35 pm
ATL
- OPO
1 stop11h 55m
Delta
Thu 10/15:55 am
OPO
- ATL
1 stop12h 55m
Delta
Deal found 6/8![Delta logo]()
$924
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2212:55 pm
ATL
- OPO
1 stop13h 05m
United Airlines
Wed 7/2912:00 pm
OPO
- ATL
2 stops27h 27m
United Airlines
Deal found 6/7![United Airlines logo]()
$927
This Turkish Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:50 pm
ATL
- OPO
1 stop30h 50m
Turkish Airlines
Mon 9/146:30 am
OPO
- ATL
1 stop35h 30m
Turkish Airlines
Deal found 6/8![Turkish Airlines logo]()
$922
Last-minute flights from Atlanta to PortoDiscover last-minute flight deals from Atlanta to Porto. Data last updated June 12, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Porto. Data last updated June 12, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/62:29 pm
ATL
- OPO
2 stops19h 46m
Multiple Airlines
Sun 9/2711:35 am
OPO
- ATL
2 stops17h 38m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$858
This Trip.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:29 pm
ATL
- OPO
2 stops19h 46m
Multiple Airlines
Sat 10/311:35 am
OPO
- ATL
2 stops17h 38m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$842
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:30 am
ATL
- OPO
2 stops23h 15m
United Airlines
Wed 9/3011:20 am
OPO
- ATL
2 stops31h 17m
United Airlines
Deal found 6/9![United Airlines logo]()
$869
This United deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:07 am
ATL
- OPO
1 stop22h 38m
Multiple Airlines
Wed 9/3011:20 am
OPO
- ATL
2 stops38h 50m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$874
This Air Canada deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:00 am
ATL
- OPO
2 stops19h 00m
Air Canada
Wed 9/306:00 am
OPO
- ATL
2 stops20h 10m
Air Canada
Deal found 6/9![Air Canada logo]()
$881
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/812:13 pm
ATL
- OPO
2 stops18h 32m
American Airlines
Wed 9/308:20 am
OPO
- ATL
2 stops18h 51m
American Airlines
Deal found 6/9![American Airlines logo]()
$888
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:57 pm
ATL
- OPO
2 stops53h 53m
United Airlines
Wed 9/306:00 am
OPO
- ATL
3 stops35h 27m
United Airlines
Deal found 6/10![United Airlines logo]()
$897
This Gotogate deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1012:55 pm
ATL
- OPO
1 stop13h 05m
Multiple Airlines
Wed 9/306:00 am
OPO
- ATL
2 stops20h 10m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$902
This FlightHub deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/128:44 pm
ATL
- OPO
2 stops29h 16m
Multiple Airlines
Mon 9/2812:10 pm
OPO
- ATL
1 stop30h 35m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$890
This Booking.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1312:55 pm
ATL
- OPO
1 stop13h 05m
Multiple Airlines
Tue 7/2112:15 pm
OPO
- ATL
1 stop33h 04m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$903
One-way flights from Atlanta to PortoSearch for one-way flight options from Atlanta to Porto. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
Search for one-way flight options from Atlanta to Porto. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:40 am
ATL
- OPO
3 stops52h 00m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:48 pm
ATL
- OPO
3 stops53h 37m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:01 am
ATL
- OPO
3 stops47h 24m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2310:27 am
ATL
- OPO
3 stops44h 03m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:27 am
ATL
- OPO
3 stops29h 03m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/32:29 pm
ATL
- OPO
2 stops21h 46m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$415
This Travelocity deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:55 pm
ATL
- OPO
1 stop13h 05m
Air Canada
Deal found 6/9![Air Canada logo]()
$442
Find flight deals from Atlanta to Porto
Discover tips and strategies to find the most affordable flight options for your journey from Atlanta (ATL) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $730 (American Airlines) |
One-way from | $304 (Kiwi.com) |
Popular in | June |
Cheapest in | March |
Average price | $1,210 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 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
Cheapest round-trip
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Fri 11/6
2:00 pm-9:05 am
1 stop14h 05m
Porto
Wed 11/11
4:10 pm-1:35 pm
1 stop26h 25m
$819
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Thu 9/17
9:50 pm-9:45 am
1 stop30h 55m
Porto
Wed 9/30
10:45 am-7:45 pm
1 stop38h 00m
$863
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Thu 9/10
9:50 pm-9:45 am
1 stop30h 55m
Porto
Mon 9/14
10:40 am-1:00 pm
1 stop31h 20m
$873
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Wed 10/14
6:12 pm-3:25 pm
2 stops16h 13m
Porto
Mon 10/19
5:00 am-5:07 pm
1 stop17h 07m
$882
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Fri 7/10
7:57 pm-6:50 am
2 stops53h 53m
Porto
Wed 9/30
6:00 am-12:27 pm
3 stops35h 27m
$897
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Sat 10/10
3:05 pm-9:40 am
1 stop37h 35m
Porto
Fri 10/16
10:40 am-1:00 pm
1 stop31h 20m
$903
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Tue 7/14
5:30 am-6:15 am
2 stops19h 45m
Porto
Tue 7/21
12:15 pm-12:30 am
2 stops41h 15m
$919
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Wed 9/2
9:50 pm-9:40 am
1 stop30h 50m
Porto
Mon 9/14
6:30 am-1:00 pm
1 stop35h 30m
$922
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Tue 9/15
4:30 pm-3:25 pm
1 stop17h 55m
Porto
Thu 10/1
5:55 am-1:50 pm
1 stop12h 55m
$924
Quickest round-trip
AtlantaPorto
ATL - OPO
ATLOPO
Atlanta Hartsfield-Jackson
Wed 9/16
5:35 pm-10:30 am
1 stop11h 55m
Porto
Thu 10/1
5:55 am-1:50 pm
1 stop12h 55m
$924
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Atlanta to Porto
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Atlanta to Porto in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Atlanta-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Atlanta-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Atlanta-Porto flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Atlanta-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Atlanta-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Atlanta to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from Atlanta with our price prediction graph.
ATL-OPO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Atlanta to Porto
How far ahead should I book a flight from Atlanta to Porto?
Booking 53 days in advance of your planned departure date is, on average, the best time to get cheap flights from Atlanta to Porto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Atlanta to Porto?
Currently, March is the cheapest month in which you can book a flight from Atlanta to Porto (average of $581). Flying from Atlanta to Porto in June is currently the most expensive (average of $1,210). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Atlanta to Porto?
Reviews of airlines servicing Porto
Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated June 12, 2026.
Read through reviews of airlines operating flights from Atlanta to Porto, such as Delta,KLM, andAir France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Comfort
7.8
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
4.0
OkayJoel,May 2026
ATL - JAX
Related info for your journey
Find useful and relevant information for your journey from Atlanta to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Atlanta
Popular flights
Porto flight routes
Alternative routes for Atlanta to Porto
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Porto by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Atlanta to Porto by cabin class
Find flights from Atlanta to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Atlanta and Porto flights
Browse other Atlanta and Porto flight options. Last updated on June 12, 2026.
Other flights from Atlanta
Browse through other flights departing from Atlanta. Flights are based on user searches made on Cheapflights and were last updated on June 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Porto
Explore flights to Porto departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 12, 2026.
Top 6 airlines flying from Atlanta to Porto
Discover the top 6 airlines that operate flights from Atlanta to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$464 | Average$935 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$533 | Average$889 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$592 | Average$762 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$604 | Average$1,013 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$644 | Average$707 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$707 | Average$707 | FlexibilityNo cancel fee | On-time70% |