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$293+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LIS
may. 6 — may. 131
mar. 5/6
mar. 5/13
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 mayo 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$565
(United)

One-way from

$293
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$887

Good round-trip deal

$712 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 ($177 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 May 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 mayo 1, 2025.

This United deal was found by Cheapflights users on 4/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/206:00 amORD - OPO
1 stop21h 45mMultiple Airlines
jue. 8/2812:10 pmOPO - ORD
1 stop32h 41mMultiple Airlines
Deal found 4/30$565
This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/201:55 pmORD - OPO
2 stops13h 25mAir Canada
jue. 8/2812:10 pmOPO - ORD
2 stops25h 50mAir Canada
Deal found 4/30$572
This oojo deal was found by Cheapflights users on 4/30. 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.
sáb. 9/206:15 pmORD - OPO
1 stop14h 45mTAP AIR PORTUGAL
vie. 9/269:00 amOPO - ORD
1 stop13h 30mTAP AIR PORTUGAL
Deal found 4/30$577
This oojo deal was found by Cheapflights users on 4/29. 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.
dom. 10/56:00 pmORD - FNC
1 stop18h 35mTAP AIR PORTUGAL
mar. 10/149:50 pmFNC - ORD
1 stop24h 20mTAP AIR PORTUGAL
Deal found 4/29$585
This United Airlines deal was found by Cheapflights users on 4/30. 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.
vie. 12/126:25 pmORD - OPO
1 stop14h 50mUnited Airlines
lun. 12/2212:30 pmOPO - ORD
1 stop30h 55mUnited Airlines
Deal found 4/30$587
This Gurufare deal was found by Cheapflights users on 4/30. 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.
mar. 8/267:00 amORD - OPO
2 stops22h 00mScandinavian Airlines
vie. 9/55:55 pmOPO - ORD
1 stop28h 15mScandinavian Airlines
Deal found 4/30$598
This flugladen.de deal was found by Cheapflights users on 4/30. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/510:25 pmORD - FNC
1 stop30h 45mMultiple Airlines
mar. 5/136:40 pmFNC - ORD
1 stop23h 05mMultiple Airlines
Deal found 4/30$598
This Orbitz deal was found by Cheapflights users on 4/30. 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.
mié. 10/2910:25 pmORD - OPO
1 stop20h 10mLufthansa
dom. 11/96:00 amOPO - ORD
1 stop13h 25mLufthansa
Deal found 4/30$604
This American Airlines deal was found by Cheapflights users on 4/29. 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.
vie. 10/104:30 pmORD - OPO
1 stop13h 10mAmerican Airlines
mar. 10/218:15 amOPO - ORD
2 stops19h 10mAmerican Airlines
Deal found 4/29$607
This oojo deal was found by Cheapflights users on 4/30. 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.
mar. 9/167:50 pmORD - OPO
1 stop38h 00mTurkish Airlines
mar. 9/3010:50 amOPO - ORD
1 stop28h 50mTurkish Airlines
Deal found 4/30$610
This Scandinavian Airlines deal was found by Cheapflights users on 4/30. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/67:15 pmORD - FAO
1 stop31h 35mScandinavian Airlines
mié. 10/159:40 amFAO - ORD
1 stop36h 30mScandinavian Airlines
Deal found 4/30$618
This Delta deal was found by Cheapflights users on 4/30. 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.
mar. 11/251:00 pmMDW - OPO
2 stops15h 30mDelta
mar. 12/25:00 amOPO - MDW
2 stops19h 36mDelta
Deal found 4/30$618

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 mayo 1, 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

jue. 10/9

6:00 pm-6:55 pm

1 stop18h 55m

Porto

vie. 10/24

9:00 am-4:10 pm

1 stop13h 10m

$567

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

mar. 9/16

6:06 pm-9:20 am

2 stops33h 14m

Porto

mar. 9/30

12:50 pm-9:51 am

1 stop27h 01m

$572

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

lun. 10/13

10:30 pm-11:20 pm

2 stops18h 50m

Porto

mar. 11/11

12:30 pm-8:05 pm

1 stop13h 35m

$593

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

mar. 8/26

7:00 am-11:00 am

2 stops22h 00m

Porto

vie. 9/5

5:55 pm-4:10 pm

1 stop28h 15m

$598

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

vie. 10/10

4:30 pm-11:40 am

1 stop13h 10m

Porto

mar. 10/21

8:15 am-9:25 pm

2 stops19h 10m

$607

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

jue. 9/18

11:25 am-9:45 am

1 stop16h 20m

Porto

mar. 10/7

10:50 am-9:40 am

1 stop28h 50m

$610

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

lun. 10/6

7:15 pm-8:50 am

1 stop31h 35m

Faro

mié. 10/15

9:40 am-4:10 pm

1 stop36h 30m

$618

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

mié. 9/3

8:40 am-9:20 am

1 stop18h 40m

Porto

mar. 9/9

12:15 pm-3:55 pm

1 stop33h 40m

$619

ChicagoFaro

ORD - FAO

ORDFAO

Chicago O'Hare Intl

mar. 9/16

9:31 pm-9:25 am

2 stops29h 54m

Faro

mar. 9/30

4:45 pm-12:10 pm

1 stop25h 25m

$641

ChicagoPorto

ORD - OPO

ORDOPO

Chicago O'Hare Intl

dom. 8/31

4:50 pm-9:45 am

1 stop10h 55m

Porto

mar. 9/9

12:50 pm-8:01 am

1 stop25h 11m

$645

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 $1,178). 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 mayo 1, 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 mayo 1, 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
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

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
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

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
285 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

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
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

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.
Air Transat
7.8
Good
385 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

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
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

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 $304. SWISS flights start at $456 while deals on American Airlines start at $473 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 $2,259 for a flight from Chicago to Portugal. The cheapest flight overall is $261 while the most popular route, (Chicago O'Hare Intl - Lisbon Humberto Delgado) is currently priced at $483.

  • 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 $1,178). 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.

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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 mayo 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$419Average$852FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$445Average$585FlexibilityNo cancel feeOn-time76%
FinnairCheapest$463Average$746FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$468Average$752FlexibilityNo cancel feeOn-time71%
IberiaCheapest$472Average$793FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$490Average$733FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$504Average$757FlexibilityNo cancel feeOn-time70%
DeltaCheapest$514Average$775FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$527Average$726FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$529Average$784FlexibilityNo cancel feeOn-time77%

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