Cheap Flights from Chicago to Porto

Compare Chicago to Porto flight deals

Find the cheapest month or even day of the year to fly to Porto

Book the best Porto fare with no extra fees

Flight deals from Chicago to Porto Airport

Looking for a cheap last-minute deal or the best return flight from Chicago to Porto Airport? If you want to travel next month, return fares start from $993. Find the lowest prices on one-way and return tickets right here.

Porto.$974 per passenger.Departing Sun, 19 Apr, returning Tue, 5 May.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 19 Apr, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departs from Porto on Tue, 5 May, arriving in Chicago O'Hare International.Price includes taxes and charges.From $974, select.

Porto.$992 per passenger.Departing Sun, 22 Mar, returning Tue, 31 Mar.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 22 Mar, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departs from Porto on Tue, 31 Mar, arriving in Chicago O'Hare International.Price includes taxes and charges.From $992, select.

Porto.$993 per passenger.Departing Tue, 14 Apr, returning Tue, 21 Apr.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Chicago O'Hare International on Tue, 14 Apr, arriving in Porto.Inbound indirect flight with Turkish Airlines, departs from Porto on Tue, 21 Apr, arriving in Chicago O'Hare International.Price includes taxes and charges.From $993, select.

Porto.$996 per passenger.Departing Tue, 1 Sep, returning Tue, 8 Sep.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Chicago O'Hare International on Tue, 1 Sep, arriving in Porto.Inbound indirect flight with Turkish Airlines, departs from Porto on Tue, 8 Sep, arriving in Chicago O'Hare International.Price includes taxes and charges.From $996, select.

Porto.$1,005 per passenger.Departing Wed, 23 Sep, returning Wed, 7 Oct.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Chicago O'Hare International on Wed, 23 Sep, arriving in Porto.Inbound indirect flight with Turkish Airlines, departs from Porto on Wed, 7 Oct, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,005, select.

Porto.$1,066 per passenger.Departing Mon, 31 Aug, returning Mon, 7 Sep.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Chicago O'Hare International on Mon, 31 Aug, arriving in Porto.Inbound indirect flight with Turkish Airlines, departs from Porto on Mon, 7 Sep, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,066, select.

Porto.$1,175 per passenger.Departing Sun, 4 Oct, returning Wed, 28 Oct.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Sun, 4 Oct, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departs from Porto on Wed, 28 Oct, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,175, select.

Porto.$1,198 per passenger.Departing Thu, 7 May, returning Thu, 14 May.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Chicago O'Hare International on Thu, 7 May, arriving in Porto.Inbound indirect flight with Turkish Airlines, departs from Porto on Thu, 14 May, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,198, select.

Porto.$1,227 per passenger.Departing Tue, 27 Oct, returning Mon, 2 Nov.Return flight with United.Outbound indirect flight with United, departs from Chicago O'Hare International on Tue, 27 Oct, arriving in Porto.Inbound indirect flight with United, departs from Porto on Mon, 2 Nov, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,227, select.

Porto.$1,260 per passenger.Departing Wed, 19 Aug, returning Wed, 26 Aug.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Wed, 19 Aug, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departs from Porto on Wed, 26 Aug, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,260, select.

Porto.$1,336 per passenger.Departing Wed, 29 Jul, returning Wed, 5 Aug.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Wed, 29 Jul, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departs from Porto on Wed, 5 Aug, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,336, select.

Porto.$1,336 per passenger.Departing Wed, 22 Jul, returning Wed, 29 Jul.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from Chicago O'Hare International on Wed, 22 Jul, arriving in Porto.Inbound indirect flight with TAP Air Portugal, departs from Porto on Wed, 29 Jul, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,336, select.

Porto.$1,479 per passenger.Departing Tue, 31 Mar, returning Mon, 6 Apr.Return flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departs from Chicago O'Hare International on Tue, 31 Mar, arriving in Porto.Inbound indirect flight with Turkish Airlines, departs from Porto on Mon, 6 Apr, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,479, select.

Porto.$1,541 per passenger.Departing Thu, 14 May, returning Thu, 17 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Chicago O'Hare International on Thu, 14 May, arriving in Porto.Inbound indirect flight with Delta, departs from Porto on Thu, 17 Dec, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,541, select.

Porto.$1,688 per passenger.Departing Mon, 18 May, returning Tue, 23 Jun.Return flight with Iberia.Outbound indirect flight with Iberia, departs from Chicago O'Hare International on Mon, 18 May, arriving in Porto.Inbound indirect flight with Iberia, departs from Porto on Tue, 23 Jun, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,688, select.

Porto.$1,703 per passenger.Departing Mon, 18 May, returning Wed, 8 Jul.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Chicago O'Hare International on Mon, 18 May, arriving in Porto.Inbound indirect flight with British Airways, departs from Porto on Wed, 8 Jul, arriving in Chicago O'Hare International.Price includes taxes and charges.From $1,703, select.

Find the cheapest month to fly from Chicago to Porto

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to Porto flights are currently cheapest in March.

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Chicago to Porto: Alternative routes

Compare routes from Chicago to Porto below. You may find an airport to fly into that's cheaper, faster, or easier than Porto.

Chicago to Porto: Flight information

The things to know before you go.

Cheapest flight found	$974
Cheapest month to fly	April

Finding cheap flights from Chicago to Porto: Frequently asked questions

How much are return flights from Chicago to Porto?

The best price we found for a return flight from Chicago to Porto is $974. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Chicago to Porto?

Currently, there are no airlines that fly direct from Chicago to Porto. But we found flights with one stop from $974.

How many flights are there a week from Chicago to Porto?

As of March 2026, there are no flights flying from Chicago to Porto.

When is the cheapest time to fly from Chicago to Porto?

The cheapest month to fly from Chicago to Porto is usually April.

Which upcoming date is cheapest to fly from Chicago to Porto Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Porto Airport on Sunday, 19 April 2026.

Can I get a direct flight from Chicago to Porto Airport?

No airlines currently offer direct flights between Chicago and Porto Airport. Most routes have one or more stops.

How can I find the best flight deal to Porto?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Porto but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Porto?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Porto is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Chicago to Porto with?

The cheapest airline that flies to Porto is TAP Air Portugal .

Flying from Chicago to Porto Airport (OPO): What you need to know

Porto is six hours ahead of Chicago. Porto Airport is located in Porto, which is in the UTC+0 timezone.
For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to catch your flight from Chicago to OPO.
Peak months like July or high seasons such as spring break and Christmas will mean longer lines at check-in and security. Be on the safe side and get to the airport even earlier. Arriving two hours before a domestic flight and up four hours ahead of an international flight is a smart move.

Airports in Chicago

Chicago O'Hare International Airport (ORD)

We make it simple to find cheap flights from Chicago to OPO that include a stopover. To explore all your options departing from Chicago O'Hare International Airport (ORD), deselect 'Direct flights only.' Then, simply select a flight that has a stop long enough to tour your chosen city. Popular stopovers between ORD and OPO include:
- Newark Liberty International Airport (EWR)
- Boston Logan International Airport (BOS)
- Toronto Pearson International Airport (YYZ)
ORD is about 27 kilometres from central Chicago. If you're ride-sharing, catching a taxi or driving from the centre, it'll take 30 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the journey time to be around 45 minutes.
Planning to catch an early flight from Chicago to Porto Airport? Avoid the stress of rushing to the terminal (and sneak in some extra snooze time) by picking one of these stays close to Chicago O'Hare International Airport:
70% of flights that take off from Chicago O'Hare International Airport land at their destination on time.
You'll find ORD at 10000 West O'Hare.

Chicago Midway International Airport (MDW)

Squeeze in an extra adventure with a stopover on your flight from Chicago to Porto Airport. Boston Logan International Airport (BOS) is a great option between Chicago Midway International Airport and OPO.
MDW is about 16 kilometres from central Chicago. It takes 25 minutes or so to get to the airport by car from the city centre. Public transport takes approximately 30 minutes.
Want to treat yourself to an extra night away before catching your Chicago to OPO flight? Kick back in a hotel near Chicago Midway International Airport before your trip officially starts. Here's where you can stay:
Chicago Midway International Airport has an on-time performance rate of 76%. This figure shows how often flights departing from this airport land on time.
The street address for MDW is 5700 South Cicero.

Chicago Rockford International Airport (RFD)

From the centre of Chicago, RFD is around 145 kilometres away. It takes roughly 1 hour 40 minutes to get to the airport by car and 2 hours or so on public transport.
Sleep a little longer, move a little slower, and still make your Chicago to Porto Airport flight without having to rush. These hotels near Chicago Rockford International Airport make departure day a breeze if you're flying out early:
Airports have an on-time performance rating that measures how often flights reach their destinations when they should. At RFD, that rate is 71%.
Chicago Rockford International Airport is located at 2 Airport Cir.

About Porto Airport (OPO)

Have a late flight from Chicago to Porto Airport? Don't let it steal your sleep. Stay at one of these hotels near OPO and turn out the lights sooner:
Lock in the lowest price by booking your vehicle around three weeks before your Chicago to Porto Airport flight.

Getting from Porto Airport (OPO) to central Porto

Porto Airport is around 11 kilometres from central Porto. It takes around 20 minutes or so to drive to the city.
It typically takes 30 minutes to get there using public transport.

How to find the cheapest flights from Chicago to Porto Airport (OPO)

$518 is currently the lowest price for a one-way ticket from Chicago to Porto Airport. Return flights start from $974. These prices may change based on availability and demand.
Booking in advance is often the key to scoring a cheap flight from Chicago to OPO. Fares tend to rise as demand increases, so the closer your departure date, the more it could cost you.
The 'Whole month' search tool will show you the cheapest Chicago to Porto Airport tickets across the entire month. It's an easy way to snap up a bargain if your travel dates are flexible.
You don't need to check back in every day to find out if prices have dropped when you set up a Price Alert. We'll let you know the moment a better deal comes up on plane tickets from Chicago to OPO.
Filters make it easier to dig up a deal for your flight from Chicago to Porto Airport. Choose the airlines, flight times and number of stops that line up with your plans. Then sort the results by 'Cheapest' to find the lowest price right away.

The best time to fly from Chicago to Porto Airport (OPO)

December is the quietest month for flights from Chicago to Porto Airport (OPO), while August is the busiest. Pick the best time to go to Porto based on whether you want a lively atmosphere or a more laid-back vibe.
When booking your Chicago to OPO plane ticket, consider what kind of weather you prefer. August is the warmest month in Porto, with temperatures ranging from 14ºC to 32ºC.
If you want cooler conditions, search for a cheap ticket from Chicago to Porto Airport in January when temperatures are between 3ºC and 14ºC.

More about Porto

Start your Porto trip right by choosing the perfect place to stay. After booking your flight from Chicago to Porto Airport, check out our selection of accommodation options including:
Every great holiday has to include a little sightseeing. Ribeira District, Rio Douro and Livraria Lello are must-do's during your Porto adventure.

Explore more of Portugal

Porto has loads to offer, but there are so many other parts of Portugal waiting to be explored. About 290 kilometres south of Porto, a trip to Lisbon will keep you busy. Check out popular attractions like Pasteis de Belém, belém and Real Mosteiro de Santa Maria de Belém.
Around 274 kilometres south of Porto, Amadora is another essential stop in Portugal. Experience this destination's highlights firsthand at Roman Villa, Park Fantasia and Palácio dos Condes da Lousã.