Cheap flights from Chicago (CHI) to Porto (OPO) from $368

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 4/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
CHI — OPO
Mar 24 — Mar 311

The best prices from Chicago to Porto are usually found in February or November, booked 87 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Cheap flight deals from Chicago to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) 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 March 19, 2024.

Popular in

June

Cheapest in

February

Average price

$568

Round-trip from

$523
High demand for flights, 23% potential price rise
Best time to find cheap flights, 25% potential price drop
Average for round-trip flights in March 2024
From Chicago (CHI) to Porto

What is the cheapest day to fly round-trip from Chicago to Porto?

Users have found that flying from Chicago to Porto on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

What is the cheapest month to fly from Chicago to Porto?

Our data shows that February tends to be the cheapest month to fly to Porto from Chicago. Users have commonly found prices around $652 for the month, but tickets can be as low as $442. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Chicago to Porto (CHI - OPO)?

A simple way to save on the total cost of your ticket is to fly from Chicago to Porto in the afternoon. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the evening.

Cheap Lufthansa flights from Chicago to Porto

Explore cheap flight options specifically provided by Lufthansa for the route between Chicago and Porto. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Take a peek at the cheapest Lufthansa flights we've detected traveling from Chicago to Porto. Deals update often to give you more flight options matching your criteria
Sun 4/79:10 pmORD - OPO
1 stop20h 10mLufthansa
Wed 4/176:00 amOPO - ORD
1 stop12h 55mLufthansa
Deal found 3/18$536
Sun 4/710:30 pmORD - OPO
2 stops18h 50mLufthansa
Wed 4/176:00 amOPO - ORD
2 stops18h 10mLufthansa
Deal found 3/18$605
Tue 4/169:10 pmORD - OPO
1 stop20h 10mLufthansa
Sun 4/216:15 amOPO - ORD
2 stops36h 40mLufthansa
Deal found 3/18$644
Tue 4/164:00 pmORD - OPO
2 stops25h 20mLufthansa
Sun 4/216:15 amOPO - ORD
2 stops36h 40mLufthansa
Deal found 3/18$664
Fri 4/1910:30 pmORD - OPO
1 stop18h 15mLufthansa
Fri 4/266:00 amOPO - ORD
1 stop14h 50mLufthansa
Deal found 3/18$675
Tue 4/169:10 pmORD - OPO
1 stop20h 10mLufthansa
Sun 4/216:00 amOPO - ORD
1 stop19h 55mLufthansa
Deal found 3/18$687
Sat 4/2010:30 pmORD - OPO
2 stops18h 50mLufthansa
Sat 4/276:00 amOPO - ORD
2 stops18h 28mLufthansa
Deal found 3/18$705
Thu 4/189:10 pmORD - OPO
1 stop20h 10mLufthansa
Sun 4/216:15 amOPO - ORD
2 stops36h 40mLufthansa
Deal found 3/17$711
Thu 4/1810:30 pmORD - OPO
2 stops18h 50mLufthansa
Sun 4/216:15 amOPO - ORD
2 stops36h 40mLufthansa
Deal found 3/17$731

Cheap SWISS flights from Chicago to Porto

Explore cheap flight options specifically provided by SWISS for the route between Chicago and Porto. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Some of the lowest-priced SWISS flights we've found at this time heading from Chicago to Porto. Ensure the flight price, dates, time, and airline match your criteria before you book.
Mon 4/17:15 pmORD - OPO
1 stop30h 40mSWISS
Mon 4/87:15 pmOPO - ORD
1 stop26h 50mSWISS
Deal found 3/18$537
Tue 4/167:15 pmORD - OPO
2 stops36h 30mSWISS
Mon 4/2212:55 pmOPO - ORD
1 stop33h 10mSWISS
Deal found 3/18$565
Wed 4/177:15 pmORD - OPO
2 stops36h 30mSWISS
Wed 4/242:35 pmOPO - ORD
2 stops31h 30mSWISS
Deal found 3/18$594
Sun 4/147:15 pmORD - OPO
2 stops36h 30mSWISS
Sat 4/207:20 pmOPO - ORD
1 stop26h 45mSWISS
Deal found 3/18$693
Sat 4/137:15 pmORD - OPO
2 stops36h 30mSWISS
Sat 4/207:20 pmOPO - ORD
1 stop26h 45mSWISS
Deal found 3/18$768
Wed 5/13:45 pmORD - OPO
2 stops16h 00mSWISS
Thu 6/277:20 pmOPO - ORD
2 stops23h 55mSWISS
Deal found 3/18$1,246

Cheap Chicago to Porto flights in March & April 2024

Find cheap flight options from Chicago to Porto specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Prices were last updated on March 19, 2024.
Scroll through some of the best deals on flights from Chicago to Porto in 2024. More deals are always being added, so be sure to check back regularly.
Mon 4/86:00 pmORD - OPO
1 stop10h 55mTAP AIR PORTUGAL
Tue 4/164:00 pmOPO - ORD
1 stop30h 10mTAP AIR PORTUGAL
Deal found 3/18$508
Sun 4/79:10 pmORD - OPO
1 stop20h 10mLufthansa
Wed 4/176:00 amOPO - ORD
1 stop12h 55mLufthansa
Deal found 3/18$536
Mon 4/17:15 pmORD - OPO
1 stop30h 40mSWISS
Mon 4/87:15 pmOPO - ORD
1 stop26h 50mSWISS
Deal found 3/18$537
Sun 4/75:15 pmORD - OPO
1 stop16h 15mDelta
Wed 4/175:00 amOPO - ORD
2 stops22h 58mDelta
Deal found 3/18$558
Wed 4/174:45 pmORD - OPO
1 stop23h 30mKLM
Wed 4/245:00 amOPO - ORD
1 stop15h 45mKLM
Deal found 3/18$560
Mon 4/82:00 pmORD - OPO
2 stops19h 30mDelta
Tue 4/165:00 amOPO - ORD
2 stops22h 34mDelta
Deal found 3/18$562
Tue 4/167:15 pmORD - OPO
2 stops36h 30mSWISS
Mon 4/2212:55 pmOPO - ORD
1 stop33h 10mSWISS
Deal found 3/18$565
Wed 4/174:45 pmORD - OPO
1 stop23h 30mKLM
Wed 4/248:30 amOPO - ORD
2 stops16h 05mKLM
Deal found 3/18$570
Wed 4/177:15 pmORD - OPO
2 stops36h 30mSWISS
Wed 4/242:35 pmOPO - ORD
2 stops31h 30mSWISS
Deal found 3/18$594

Chicago to Porto 2024 flight deals

Discover exclusive flight deals for travel between Chicago and Porto in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Scroll through some of the best deals on flights from Chicago to Porto in 2024. More deals are always being added, so be sure to check back regularly.
Mon 4/86:00 pmORD - OPO
1 stop10h 55mTAP AIR PORTUGAL
Tue 4/164:00 pmOPO - ORD
1 stop30h 10mTAP AIR PORTUGAL
Deal found 3/18$508
Sun 4/79:10 pmORD - OPO
1 stop20h 10mLufthansa
Wed 4/176:00 amOPO - ORD
1 stop12h 55mLufthansa
Deal found 3/18$536
Mon 4/17:15 pmORD - OPO
1 stop30h 40mSWISS
Mon 4/87:15 pmOPO - ORD
1 stop26h 50mSWISS
Deal found 3/18$537
Sun 4/75:15 pmORD - OPO
1 stop16h 15mDelta
Wed 4/175:00 amOPO - ORD
2 stops22h 58mDelta
Deal found 3/18$558
Wed 4/174:45 pmORD - OPO
1 stop23h 30mKLM
Wed 4/245:00 amOPO - ORD
1 stop15h 45mKLM
Deal found 3/18$560
Mon 4/82:00 pmORD - OPO
2 stops19h 30mDelta
Tue 4/165:00 amOPO - ORD
2 stops22h 34mDelta
Deal found 3/18$562
Tue 4/167:15 pmORD - OPO
2 stops36h 30mSWISS
Mon 4/2212:55 pmOPO - ORD
1 stop33h 10mSWISS
Deal found 3/18$565
Wed 4/174:45 pmORD - OPO
1 stop23h 30mKLM
Wed 4/248:30 amOPO - ORD
2 stops16h 05mKLM
Deal found 3/18$570
Wed 4/177:15 pmORD - OPO
2 stops36h 30mSWISS
Wed 4/242:35 pmOPO - ORD
2 stops31h 30mSWISS
Deal found 3/18$594

Chicago to Porto flights leaving soon

Find last-minute flight options from Chicago to Porto for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Users seeking a last-minute flight from Chicago to Porto should consider booking one of these fares. To prevent any unwanted surprises, users should verify their flight info before booking.
Thu 3/2811:35 pmORD - OPO
1 stop17h 50mLufthansa
Sat 4/66:15 amOPO - ORD
1 stop17h 55mLufthansa
Deal found 3/18$859
Thu 3/2811:35 pmORD - OPO
2 stops19h 00mLufthansa
Sat 4/66:15 amOPO - ORD
1 stop17h 55mLufthansa
Deal found 3/18$882
Thu 3/2811:35 pmORD - OPO
2 stops19h 00mLufthansa
Sat 4/611:10 amOPO - ORD
2 stops31h 45mLufthansa
Deal found 3/18$1,034
Fri 3/221:14 pmMDW - OPO
2 stops16h 16mDelta
Fri 3/297:05 amOPO - MDW
2 stops19h 39mDelta
Deal found 3/17$1,838
Fri 3/225:48 pmMDW - OPO
2 stops36h 02mAir France
Fri 3/2911:45 amOPO - MDW
2 stops33h 31mAir France
Deal found 3/18$2,111

One-way flights to Porto from Chicago

Search for one-way flight options from Chicago to Porto. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,145,932 searches. Data last updated March 19, 2024.
Users traveling one-way from Chicago to Porto can select one of these great deals. For those needing a return trip from Chicago, there is a search form available above.
Wed 4/1711:11 amORD - OPO
2 stops18h 29mMultiple Airlines
Deal found 3/18$368
Wed 5/18:59 pmORD - OPO
2 stops35h 26mMultiple Airlines
Deal found 3/18$370
Wed 4/1711:11 amORD - OPO
3 stops25h 49mMultiple Airlines
Deal found 3/18$381
Wed 5/16:00 amORD - OPO
3 stops26h 25mMultiple Airlines
Deal found 3/18$386
Wed 4/1710:59 pmMDW - OPO
3 stops38h 06mMultiple Airlines
Deal found 3/18$386
Thu 5/26:00 amORD - OPO
3 stops26h 25mMultiple Airlines
Deal found 3/17$416
Thu 5/27:00 amMDW - OPO
3 stops25h 25mMultiple Airlines
Deal found 3/17$421
Wed 4/179:10 pmORD - OPO
1 stop20h 10mLufthansa
Deal found 3/18$479
Thu 5/210:12 amORD - OPO
2 stops22h 13mMultiple Airlines
Deal found 3/17$493

Find flights from Chicago to Porto within your budget

Customize your flight search to find flights from Chicago 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 3,145,932 searches. Data last updated March 19, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$508 - $814

Route

Depart

Return

Price

Chicago O'Hare IntlPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 4/8

1 stop10h 55m

Porto

Tue 4/16

1 stop30h 10m

$508

Chicago O'Hare IntlPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 4/7

1 stop20h 10m

Porto

Wed 4/17

1 stop12h 55m

$536

Chicago O'Hare IntlPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 4/1

1 stop30h 40m

Porto

Mon 4/8

1 stop26h 50m

$537

Chicago O'Hare IntlPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 4/7

1 stop16h 15m

Porto

Wed 4/17

2 stops22h 58m

$558

Chicago O'Hare IntlPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 4/17

1 stop23h 30m

Porto

Wed 4/24

1 stop15h 45m

$560

Chicago O'Hare IntlPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 4/1

1 stop16h 15m

Porto

Mon 4/8

2 stops54h 15m

$614

Chicago O'Hare IntlPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 4/1

1 stop20h 15m

Porto

Mon 4/8

1 stop13h 48m

$619

Chicago O'Hare IntlPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Thu 5/2

2 stops20h 32m

Porto

Thu 5/9

2 stops25h 19m

$689

Chicago O'Hare IntlPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 5/1

2 stops15h 20m

Porto

Thu 5/9

2 stops23h 10m

$814

Flights are sorted by cheapest first

Deals found on 3/18

When is the best time to book a flight from Chicago to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Porto. Price data was last updated on January 28, 2024.
The price you pay for your flight from Chicago to Porto may vary depending on when you book. For the best chance of a lower fare, look to book 87 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from Chicago to Porto. Price data was last updated on March 17, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Chicago to Porto flight should consider departing on Monday mornings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Porto by month

Plan your trip from Chicago to Porto by taking into account the cheapest months to travel. The average price of a one-way flight from Chicago to Porto is currently $411 while a round-trip flight costs $604. Price data was last updated on March 10, 2024.

Currently, January is the cheapest month in which you can book a flight from Chicago to Porto (average of $523). Flying from Chicago to Porto in June is currently the most expensive (average of $1,079). 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.

January

$523

February

$581

March

$602

April

$710

May

$861

June

$1,079

July

$991

August

$880

September

$778

October

$698

November

$545

December

$645

Temperature and rainfall in Porto by month

Plan your trip to Porto by taking into account the average temperature and rainfall totals by month.

OPO

Temperature

48.2 - 68 °F

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 March 19, 2024.
Read through reviews of airlines operating flights from Chicago to Porto, such as Lufthansa, SWISS and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
11,551 reviews

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

8.1

Crew

8.6

Overall

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

8.1
Very good
11,551 reviews
8.1
Very good
11,551 reviews

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

8.1

Crew

8.6

Overall

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

7.8
Good
2,183 reviews
8.1
Very good
11,551 reviews

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

8.1

Crew

8.6

Overall

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

7.8
Good
1,720 reviews
8.1
Very good
11,551 reviews

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

8.1

Crew

8.6

Overall

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

7.6
Good
1,910 reviews
8.1
Very good
11,551 reviews

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

8.1

Crew

8.6

Overall

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

7.5
Good
3,799 reviews
8.1
Very good
11,551 reviews

Comfort

7.9

Food

7.5

Boarding

8.2

Entertainment

8.1

Crew

8.6

Overall

8.1

Reviews

1 / 10

It was a good experience other than a short delay.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Porto from Chicago?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Chicago to Porto. 9 airlines have flights to Porto from Chicago on a regular basis. Booking flights from Chicago to Porto should not be difficult; the airport handles an average of 0 inbound flights from Chicago per day.

  • Can I find flights from Chicago to Porto for under $600 on Cheapflights?

    Yes, there are multiple flights from Chicago to Porto for under $600. The cheapest flight booked recently is on TAP AIR PORTUGAL for just $508, but on average you can expect to pay $592.

  • Are there last-minute flights available from Chicago to Porto for under $900?

    There are currently 5+ open flights from Chicago to Porto within the next 7 days for less than $900.

  • What are the cheapest airlines flying from Chicago to Porto round-trip?

    TAP AIR PORTUGAL, at $508, was found to be the cheapest airline from Chicago to Porto.Alternate airlines to your destination round-trip include Lufthansa and SWISS. TAP AIR PORTUGAL is 22% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Chicago to Porto one-way?

    The cheapest airlines for a one-way flight from Chicago to Porto are Lufthansa ($479), Iberia ($559), and SWISS ($589).

  • What are the most popular airlines that fly from Chicago to Porto?

  • What does ORD to OPO mean?

    ORD and OPO are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. ORD to OPO refers to a flight route from Chicago O'Hare Intl Airport to Porto Airport. Chicago Midway Airport (MDW), Chicago Greater Rockford Airport (RFD) are other airports near this flight route and their unique identifiers/IATA codes.

See more FAQs

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.

Top 9 airlines flying from Chicago to Porto

Discover the top 9 airlines that operate flights from Chicago 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 3,145,932 searches. Data last updated March 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$433Average$726FlexibilityNo cancel feeOn-time79%
Search SWISS flights
IberiaCheapest$485Average$635FlexibilityNo cancel feeOn-time77%
Search Iberia flights
TAP AIR PORTUGALCheapest$499Average$852FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
KLMCheapest$520Average$740FlexibilityNo cancel feeOn-time75%
Search KLM flights
DeltaCheapest$520Average$796FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
British AirwaysCheapest$526Average$827FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest$554Average$798FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$612Average$1,142FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest$674Average$1,165FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Search flights from Chicago to Porto by cabin class

Find flights from Chicago to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Chicago to Porto?

Cheapflights helps you search for flights from Chicago to Porto via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Chicago to Porto?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Chicago to Porto for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Chicago to Porto with no change fees?

Yes, we can. To see specific flights from Chicago to Porto with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Chicago to Porto become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.