$306+ Cheap flights from Portugal to Chicago (CHI)
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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Portugal to Chicago with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portugal to Chicago
Keep the following information in mind while searching for Portugal to Chicago flight deals. Data was last updated June 12, 2025.
Round-trip from | $394 (oojo) |
|---|---|
One-way from | $306 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $750 |
Good round-trip deal | $757 or less |
Good one-way deal | $666 or less |
Find flight deals from Portugal to Chicago
Cheapest flights from Portugal to ChicagoExplore the most affordable flight options available from Portugal to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from Portugal to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This oojo deal was found by Cheapflights users on 6/12. 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.
This Booking.com deal was found by Cheapflights users on 6/11. 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.
This AirNGo deal was found by Cheapflights users on 6/10. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 6/10. 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.
This Delta deal was found by Cheapflights users on 6/10. 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.
This Air France deal was found by Cheapflights users on 6/10. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 6/11. 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.
This Delta deal was found by Cheapflights users on 6/11. 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.
This American Airlines deal was found by Cheapflights users on 6/12. 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.
This Gotogate deal was found by Cheapflights users on 6/12. 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.
This Trip.com deal was found by Cheapflights users on 6/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Iberia deal was found by Cheapflights users on 6/11. 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.
Cheapflights Fare Finder
Customize your flight search to find flights from Portugal to Chicago 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 June 12, 2025.
Use the filters below to find and compare flights from Portugal to Chicago that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
LisbonChicago
LIS - ORD
LISORD
Lisbon Humberto Delgado
Wed 11/26
4:55 pm-4:45 pm
1 stop29h 50m
Chicago O'Hare Intl
Sun 11/30
7:20 pm-4:05 pm
1 stop14h 45m
LisbonChicago
LIS - ORD
LISORD
Lisbon Humberto Delgado
Thu 10/2
9:20 am-12:35 pm
Nonstop9h 15m
Chicago O'Hare Intl
Thu 10/16
6:00 pm-8:00 am
Nonstop8h 00m
PortoChicago
OPO - ORD
OPOORD
Porto
Fri 10/10
10:35 pm-4:30 pm
1 stop23h 55m
Chicago O'Hare Intl
Fri 10/17
6:00 pm-12:40 am
1 stop24h 40m
LisbonChicago
LIS - ORD
LISORD
Lisbon Humberto Delgado
Thu 10/2
7:30 pm-2:10 pm
1 stop24h 40m
Chicago O'Hare Intl
Thu 11/13
5:20 pm-5:30 pm
1 stop18h 10m
LisbonChicago
LIS - ORD
LISORD
Lisbon Humberto Delgado
Sat 11/15
5:00 am-2:30 pm
1 stop15h 30m
Chicago O'Hare Intl
Wed 12/3
1:30 pm-8:00 am
1 stop12h 30m
LisbonChicago
LIS - ORD
LISORD
Lisbon Humberto Delgado
Mon 11/3
5:30 am-3:10 pm
1 stop15h 40m
Chicago O'Hare Intl
Mon 11/10
5:20 pm-3:10 pm
1 stop15h 50m
LisbonChicago
LIS - ORD
LISORD
Lisbon Humberto Delgado
Thu 10/2
11:40 am-2:10 pm
1 stop32h 30m
Chicago O'Hare Intl
Thu 10/16
4:20 pm-10:55 am
1 stop12h 35m
LisbonChicago
LIS - MDW
LISMDW
Lisbon Humberto Delgado
Tue 10/7
5:00 am-6:36 pm
2 stops19h 36m
Chicago Midway
Mon 10/20
5:59 pm-5:50 pm
2 stops17h 51m
PortoChicago
OPO - ORD
OPOORD
Porto
Mon 11/24
8:20 am-2:30 pm
1 stop12h 10m
Chicago O'Hare Intl
Mon 12/1
4:45 pm-4:00 pm
1 stop17h 15m
PortoChicago
OPO - ORD
OPOORD
Porto
Mon 6/23
8:35 pm-2:15 pm
1 stop23h 40m
Chicago O'Hare Intl
Tue 7/8
4:30 pm-11:40 am
1 stop13h 10m
Best time to book a flight from Portugal to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Portugal with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Portugal to Chicago
What is the cheapest month to book a flight from Portugal to Chicago?
Currently, August is the cheapest month in which you can book a flight from Portugal to Chicago (average of $245). Flying from Portugal to Chicago in March is currently the most expensive (average of $321). 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 PT to CHI?
Find hourly flight availability from Portugal to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.
It’s optimal to fly from Portugal to Chicago at noon. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight in the morning.
Rainfall in Chicago by month
Plan your trip to Chicago by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.
Temperature in Chicago by month
Plan your trip to Chicago by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Chicago, 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 23.0 F).
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated June 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Air Transat from Portugal to Chicago. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from Portugal to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Portugal to Chicago
See prices for flight routes from nearby airports that may be better suited for you.
Top 4 airlines flying from Portugal to Chicago
Discover the top 4 airlines that operate flights from Portugal to Chicago. 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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$579 | Average$713 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$580 | Average$1,145 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$650 | Average$696 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$733 | Average$886 | FlexibilityNo cancel fee | On-time69% |