Cheap flights from Atlanta to Porto from $261
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 10/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.Find the cheapest flights from Atlanta to Porto
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Lufthansa flights from Atlanta to Porto
Our best Lufthansa deals on Atlanta to Porto flight tickets
United Airlines flights from Atlanta to Porto
Our best United Airlines deals on Atlanta to Porto flight tickets
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 $614. If you aren’t able to travel during the month of February, then book flights to Porto from Atlanta during January instead. Flights to Porto in January, while not as cheap as those in February, still average around $685.
What is the cheapest day to depart on your flight to Porto?
The cheapest day to depart on your flight to Porto is on a Tuesday when prices can be found for as low as $936. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,367. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.
What is the cheapest time of day to depart on your flight to Porto?
In the morning is the cheapest time of day to fly from Atlanta to Porto when you can find flight prices for as low as $855. Flying to Porto in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,205 on average. Flights to Porto from Atlanta in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
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 $963 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 $685 on momondo.
What is the cheapest airline that flies from Atlanta Hartsfield-Jackson to Porto?
British Airways, United Airlines, and Air Europa are the most popular carriers operating from Atlanta Hartsfield-Jackson to Porto
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 43% 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.
When to book flights from Atlanta to Porto
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
How far is Atlanta Hartsfield-Jackson to Porto by plane?
Atlanta Hartsfield-Jackson and Porto are 4052.2 mi apart from one another. 12h 08m 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 July 2025, there are 6 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 39% of all bookings. The subsequent popular airlines are KLM at 28%, United Airlines at 17%, and Turkish Airlines at 7%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $569 | Free Cancellation | Rating 6.8 7,207 reviews | |||
| PriceFrom $569 | Free Cancellation | Rating 7.8 1,366 reviews | |||
| PriceFrom $579 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $613 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $626 | Free Cancellation | Rating 7.3 3,895 reviews | |||
| PriceFrom $1,168 | Free Cancellation | Rating 7.5 1,473 reviews |
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsWhy 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.