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$280+ Cheap flights from Chicago (CHI) to Portugal

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LIS
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
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Cheap flight deals from Chicago to Portugal

Keep the following information in mind while searching for Chicago to Portugal flight deals. Data was last updated April 22, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$530
(Gurufare)

One-way from

$280
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$717

Good round-trip deal

$727 or less

Good one-way deal

$326 or less
Provider with most accurate pricing for Chicago (CHI)-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Lisbon Humberto Delgado flights.
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From Chicago (CHI) to Portugal
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One-way flight from Chicago (CHI) to Portugal
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Highest demand for flights based on searches. 19% potential increase in price ($180 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Portugal.
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Price to beat on a one-way flight from Chicago (CHI) to Portugal.
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Find flight deals from Chicago to Portugal

Cheapest flights from Chicago to Portugal
Explore the most affordable flight options available from Chicago to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

This SmartFares deal was found by Cheapflights users on 4/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/67:15 pmORD - FAO
1 stop31h 35mScandinavian Airlines
Wed 10/1510:45 amFAO - ORD
2 stops35h 25mScandinavian Airlines
Deal found 4/22$520
This Air Canada deal was found by Cheapflights users on 4/21. 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.
Mon 11/242:00 pmORD - OPO
2 stops15h 40mMultiple Airlines
Mon 12/17:30 pmOPO - ORD
2 stops30h 55mMultiple Airlines
Deal found 4/21$558
This FlightHub deal was found by Cheapflights users on 4/22. 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 10/56:00 pmORD - FAO
1 stop23h 50mTAP AIR PORTUGAL
Wed 10/156:10 pmFAO - ORD
1 stop24h 25mTAP AIR PORTUGAL
Deal found 4/22$566
This oojo deal was found by Cheapflights users on 4/21. 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.
Thu 10/96:00 pmORD - OPO
1 stop18h 55mTAP AIR PORTUGAL
Fri 10/247:00 amOPO - ORD
1 stop15h 10mTAP AIR PORTUGAL
Deal found 4/21$578
This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1310:30 pmORD - OPO
2 stops18h 50mLufthansa
Tue 11/1112:30 pmOPO - ORD
1 stop13h 35mLufthansa
Deal found 4/22$594
This Gurufare deal was found by Cheapflights users on 4/22. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/267:00 amORD - OPO
2 stops22h 00mScandinavian Airlines
Fri 9/55:55 pmOPO - ORD
1 stop28h 15mScandinavian Airlines
Deal found 4/22$598
This United Airlines deal was found by Cheapflights users on 4/22. 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 8/204:50 pmORD - PDL
1 stop10h 50mUnited Airlines
Fri 8/2911:00 amPDL - ORD
2 stops17h 15mUnited Airlines
Deal found 4/22$610
This FlightHub deal was found by Cheapflights users on 4/21. 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 9/2211:25 amORD - OPO
1 stop16h 25mTurkish Airlines
Sun 10/55:10 pmOPO - ORD
1 stop34h 50mTurkish Airlines
Deal found 4/21$613
This Delta deal was found by Cheapflights users on 4/22. 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 11/251:00 pmMDW - OPO
2 stops15h 30mDelta
Tue 12/25:00 amOPO - MDW
2 stops19h 36mDelta
Deal found 4/22$618
This Orbitz deal was found by Cheapflights users on 4/21. 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 9/248:40 amORD - OPO
1 stop18h 45mAir Canada
Fri 10/36:00 amOPO - ORD
2 stops19h 29mAir Canada
Deal found 4/21$625
This United Airlines deal was found by Cheapflights users on 4/21. 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 9/243:35 pmORD - OPO
1 stop11h 50mUnited Airlines
Fri 10/36:00 amOPO - ORD
1 stop19h 55mUnited Airlines
Deal found 4/21$632
This oojo deal was found by Cheapflights users on 4/22. 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.
Fri 10/176:00 pmORD - PDL
1 stop16h 00mTAP AIR PORTUGAL
Thu 10/237:40 pmPDL - ORD
1 stop25h 30mTAP AIR PORTUGAL
Deal found 4/22$632

Cheapflights Fare Finder

Customize your flight search to find flights from Chicago to Portugal 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 April 22, 2025.
Use the filters below to find and compare flights from Chicago to Portugal that are best for you.

Fly from

Chicago

Fly to

Portugal

Route

Depart

Return

Price

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Thu 10/9

6:00 pm-6:55 pm

1 stop18h 55m

Porto

Fri 10/24

7:00 am-4:10 pm

1 stop15h 10m

$578

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 7/21

2:00 pm-9:35 am

2 stops13h 35m

Porto

Mon 11/17

7:30 pm-8:25 pm

2 stops30h 55m

$583

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 10/13

10:30 pm-11:20 pm

2 stops18h 50m

Porto

Tue 11/11

12:30 pm-8:05 pm

1 stop13h 35m

$594

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Tue 8/26

7:00 am-11:00 am

2 stops22h 00m

Porto

Fri 9/5

5:55 pm-4:10 pm

1 stop28h 15m

$598

ChicagoPonta Delgada

ORD - PDL

ORDPDL

Chicago O'Hare Intl

Wed 8/20

4:50 pm-8:40 am

1 stop10h 50m

Ponta Delgada Nordela

Fri 8/29

11:00 am-11:15 pm

2 stops17h 15m

$610

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 9/22

11:25 am-9:50 am

1 stop16h 25m

Porto

Sun 10/5

5:10 pm-10:00 pm

1 stop34h 50m

$613

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 9/24

8:40 am-9:25 am

1 stop18h 45m

Porto

Fri 10/3

6:00 am-7:29 pm

2 stops19h 29m

$625

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Wed 9/24

3:35 pm-9:25 am

1 stop11h 50m

Porto

Fri 10/3

6:00 am-7:55 pm

1 stop19h 55m

$632

ChicagoPonta Delgada

ORD - PDL

ORDPDL

Chicago O'Hare Intl

Fri 10/17

6:00 pm-3:00 pm

1 stop16h 00m

Ponta Delgada Nordela

Thu 10/23

7:40 pm-4:10 pm

1 stop25h 30m

$632

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

Mon 5/12

7:05 pm-7:55 am

1 stop30h 50m

Porto

Mon 5/19

7:20 pm-12:10 pm

1 stop22h 50m

$646

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 60 results
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Best time to book a flight from Chicago to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Chicago 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.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Portugal

What is the cheapest month to book a flight from Chicago to Portugal?

Currently, January is the cheapest month in which you can book a flight from Chicago to Portugal (average of $612). Flying from Chicago to Portugal in June is currently the most expensive (average of $1,203). 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 CHI to PT?

Find hourly flight availability from Chicago to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

It’s typically best to fly out from Chicago to Portugal at noon. Doing so could potentially save you 33% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Chicago to Portugal?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Portugal. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago to Portugal flight should consider departing on Wednesday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Portugal by month

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

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated April 22, 2025.
Read reviews from past customers who have flown Delta, Porter Airlines and KLM from Chicago to Portugal. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Porter Airlines
8.0
Very good
284 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,331 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,272 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,582 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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 Chicago to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $280. Scandinavian Airlines flights start at $444 while deals on SWISS start at $482 one-way.

  • What are the most popular routes from Chicago to Portugal?

    The most popular route from Chicago to Portugal is Chicago O'Hare Intl - Lisbon Humberto Delgado. You may also consider Chicago Midway - Lisbon Humberto Delgado or Chicago O'Hare Intl - Porto.

  • What are the cheapest flights from Chicago to Portugal?

    On average you can expect to pay $2,263 for a flight from Chicago to Portugal. The cheapest flight overall is $255 while the most popular route, (Chicago O'Hare Intl - Lisbon Humberto Delgado) is currently priced at $560.

  • Can I find deals for flights from Chicago to Portugal that include hotel bookings?

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

  • How can I find direct flights from Chicago to Portugal?

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

  • Can I find deals for business class flights from Chicago to Portugal?

    Yes. Cheapflights offers flight deals from Chicago to Portugal 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 Chicago to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Portugal (average of $612). Flying from Chicago to Portugal in June is currently the most expensive (average of $1,203). 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 Chicago to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Chicago to Portugal

Discover the top 10 airlines that operate flights from Chicago to Portugal. 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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$416Average$853FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$445Average$585FlexibilityNo cancel feeOn-time76%
FinnairCheapest$463Average$749FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$468Average$753FlexibilityNo cancel feeOn-time71%
IberiaCheapest$472Average$790FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$490Average$733FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$504Average$758FlexibilityNo cancel feeOn-time70%
DeltaCheapest$514Average$781FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$527Average$724FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$529Average$784FlexibilityNo cancel feeOn-time77%

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