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$313+ Cheap flights from Illinois 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OPO
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Illinois to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) 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 November 20, 2024.

Find flight deals from Illinois to Porto

Cheapest flights from Illinois to Porto
Explore the most affordable flight options available from Illinois to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/18. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/68:20 pmORD - OPO
1 stop15h 40mTAP AIR PORTUGAL
Fri 12/136:55 amOPO - ORD
1 stop14h 35mTAP AIR PORTUGAL
Deal found 11/18$478
This Gotogate deal was found by Cheapflights users on 11/20. 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.
Sun 12/84:00 pmORD - OPO
2 stops17h 10mMultiple Airlines
Mon 12/236:55 pmOPO - ORD
1 stop27h 20mMultiple Airlines
Deal found 11/20$494
This American Airlines deal was found by Cheapflights users on 11/19. 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 12/34:45 pmORD - OPO
1 stop13h 00mAmerican Airlines
Thu 12/128:20 amOPO - ORD
1 stop12h 10mAmerican Airlines
Deal found 11/19$503
This Air Canada deal was found by Cheapflights users on 11/19. 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.
Tue 12/311:35 amORD - OPO
2 stops18h 05mAir Canada
Tue 12/106:00 amOPO - ORD
2 stops19h 32mAir Canada
Deal found 11/19$506
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 12/43:55 pmORD - OPO
1 stop13h 45mLufthansa
Wed 12/116:00 amOPO - ORD
1 stop13h 25mLufthansa
Deal found 11/20$509
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 12/17:05 pmORD - OPO
1 stop34h 10mSWISS
Mon 12/97:05 pmOPO - ORD
1 stop27h 10mSWISS
Deal found 11/19$514
This KLM deal was found by Cheapflights users on 11/20. 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 12/35:45 pmORD - OPO
2 stops15h 40mKLM
Tue 12/104:10 pmOPO - ORD
1 stop28h 20mKLM
Deal found 11/20$523
This United Airlines deal was found by Cheapflights users on 11/20. 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 12/43:15 pmORD - OPO
1 stop14h 25mUnited Airlines
Mon 12/96:00 amOPO - ORD
1 stop35h 05mUnited Airlines
Deal found 11/20$528
This Delta deal was found by Cheapflights users on 11/20. 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 12/44:25 pmORD - OPO
1 stop12h 05mDelta
Tue 12/106:00 amOPO - ORD
2 stops18h 31mDelta
Deal found 11/20$529
This KLM deal was found by Cheapflights users on 11/19. 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 12/35:42 pmMDW - OPO
2 stops15h 43mKLM
Wed 12/116:00 amOPO - MDW
2 stops18h 32mKLM
Deal found 11/19$533
This Iberia deal was found by Cheapflights users on 11/18. 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.
Mon 12/94:45 pmORD - OPO
1 stop13h 00mIberia
Mon 12/168:20 amOPO - ORD
1 stop12h 10mIberia
Deal found 11/18$553
This Delta deal was found by Cheapflights users on 11/18. 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.
Fri 12/69:30 amMDW - OPO
2 stops19h 00mDelta
Fri 12/136:15 amOPO - MDW
2 stops18h 17mDelta
Deal found 11/18$583

Find flights from Illinois to Porto within your budget

Customize your flight search to find flights from Illinois 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 2,629,791 searches. Data last updated November 20, 2024.

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Route

Depart

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Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 2/2

8:25 pm-11:05 am

1 stop32h 40m

Porto

Tue 2/11

6:00 pm-3:30 pm

1 stop27h 30m

$439

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Sun 2/2

8:25 pm-7:20 pm

2 stops16h 55m

Porto

Tue 2/11

8:10 pm-3:30 pm

2 stops25h 20m

$485

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Tue 12/3

4:45 pm-11:45 am

1 stop13h 00m

Porto

Thu 12/12

8:20 am-2:30 pm

1 stop12h 10m

$503

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Tue 12/3

11:35 am-11:40 am

2 stops18h 05m

Porto

Wed 12/11

6:00 am-10:07 pm

2 stops22h 07m

$506

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 12/4

3:55 pm-11:40 am

1 stop13h 45m

Porto

Wed 12/11

6:00 am-1:25 pm

1 stop13h 25m

$509

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Tue 12/3

5:45 pm-3:25 pm

2 stops15h 40m

Porto

Tue 12/10

4:10 pm-2:30 pm

1 stop28h 20m

$523

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 12/4

3:15 pm-11:40 am

1 stop14h 25m

Porto

Mon 12/9

6:00 am-11:05 am

1 stop35h 05m

$528

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 12/4

4:25 pm-10:30 am

1 stop12h 05m

Porto

Thu 12/12

11:45 am-10:05 am

2 stops28h 20m

$533

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Tue 12/3

5:42 pm-3:25 pm

2 stops15h 43m

Porto

Wed 12/11

6:00 am-6:32 pm

2 stops18h 32m

$533

ChicagoPorto

MDW - OPO

MDWOPO

Chicago Midway

Wed 1/15

2:08 pm-10:50 am

2 stops14h 42m

Porto

Wed 1/29

6:00 am-5:47 pm

2 stops17h 47m

$538

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 31 results
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Best time to book a flight from Illinois to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Illinois with our price prediction graph.
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.

Travel insights for flights from Illinois to Porto

Get recent, data-driven insights about flights from Illinois to Porto including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Illinois to Porto?

Currently, January is the cheapest month in which you can book a flight from Illinois to Porto (average of $517). Flying from Illinois to Porto in June is currently the most expensive (average of $993). 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.

What is the cheapest time of day to fly from IL to OPO?

Find hourly flight availability from Illinois to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Porto as you normally would.

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 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 November 20, 2024.
Read through reviews of airlines operating flights from Illinois to Porto, such as Lufthansa, KLM and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,756 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.6
Good
1,637 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Turkish Airlines
7.4
Good
3,915 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
9,171 reviews
Delta
8.0
Very good
8,756 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Food

7.3

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 Illinois?

    For a flight from Illinois to Porto, you will be flying into Porto. Porto (OPO) is just 6.8 mi from the center of the city.

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

    One-way options have recently been found by users for as low as $360 on Scandinavian Airlines. Other airlines that offer cheap prices include Delta from $422 and TAP AIR PORTUGAL from $423 one-way.

  • What are the most popular routes from Illinois to Porto?

    When deciding which route to take from Illinois to Porto consider Chicago O'Hare Intl - Porto, Chicago Midway - Porto or Lambert-St Louis - Porto as they are the most popular.

  • Can I find deals for flights from Illinois to Porto that include hotel bookings?

    Yes. In addition to deals on Illinois to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Porto.

  • Can I find deals for business class flights from Illinois to Porto?

    Yes. Cheapflights offers flight deals from Illinois to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Porto?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Porto (average of $517). Flying from Illinois to Porto in June is currently the most expensive (average of $993). 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.

See more FAQs

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Alternative routes for Illinois to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Illinois to Porto

Discover the top 9 airlines that operate flights from Illinois 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$418Average$665FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$468Average$747FlexibilityNo cancel feeOn-time71%
IberiaCheapest$488Average$641FlexibilityNo cancel feeOn-time77%
DeltaCheapest$519Average$821FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$523Average$831FlexibilityNo cancel feeOn-time70%
KLMCheapest$527Average$834FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$534Average$838FlexibilityNo cancel feeOn-time76%
SWISSCheapest$616Average$940FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$626Average$1,043FlexibilityNo cancel feeOn-time69%
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