$364+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Illinois to Porto 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 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 enero 13, 2025.
Round-trip from | $458 (oojo) |
|---|---|
One-way from | $364 (Mytrip) |
Find flight deals from Illinois to Porto
Cheapest flights from Illinois to PortoExplore 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 enero 13, 2025.
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 enero 13, 2025.
This oojo deal was found by Cheapflights users on 1/12. 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 AirNGo deal was found by Cheapflights users on 1/12. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Ticket deal was found by Cheapflights users on 1/12. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 1/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Ticket deal was found by Cheapflights users on 1/12. 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 Ticket 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 1/12. 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 Booking.com 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 1/12. 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 Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com 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 1/12. 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 Air France 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 1/12. 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 Air France 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 1/12. 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 Delta 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 1/11. 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.
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 2,558,603 searches. Data last updated enero 13, 2025.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
mar. 2/11
5:00 pm-5:40 pm
1 stop18h 40m
Porto
mar. 2/18
8:20 am-2:30 pm
1 stop12h 10m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
dom. 2/2
8:25 pm-3:20 pm
1 stop12h 55m
Porto
sáb. 2/8
8:00 pm-3:30 pm
1 stop25h 30m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
mié. 2/26
4:25 pm-3:25 pm
1 stop17h 00m
Porto
mié. 3/5
6:00 am-5:32 pm
2 stops17h 32m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
mar. 2/18
4:45 pm-11:45 am
1 stop13h 00m
Porto
mié. 2/26
8:20 am-2:30 pm
1 stop12h 10m
ChicagoPorto
MDW - OPO
MDWOPO
Chicago Midway
mié. 2/26
5:07 pm-3:25 pm
2 stops16h 18m
Porto
mié. 3/5
6:00 am-5:43 pm
2 stops17h 43m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
mié. 2/26
4:00 pm-12:50 pm
2 stops14h 50m
Porto
mié. 3/5
6:00 am-7:37 pm
2 stops19h 37m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
mié. 2/19
4:16 pm-11:45 am
2 stops13h 29m
Porto
mié. 2/26
8:20 am-2:30 pm
1 stop12h 10m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
mar. 3/25
8:05 pm-6:30 pm
1 stop17h 25m
Porto
jue. 4/3
8:40 am-3:55 pm
1 stop13h 15m
ChicagoPorto
MDW - OPO
MDWOPO
Chicago Midway
mié. 2/19
2:08 pm-10:50 am
2 stops14h 42m
Porto
mié. 2/26
6:00 am-5:43 pm
2 stops17h 43m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
mié. 2/26
10:40 am-10:50 am
2 stops18h 10m
Porto
mié. 3/5
6:00 am-2:30 pm
1 stop14h 30m
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.
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 $523). Flying from Illinois to Porto in June is currently the most expensive (average of $1,083). 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 enero 13, 2025.
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 enero 13, 2025.
Read through reviews of airlines operating flights from Illinois to Porto, such as United Airlines, KLM and British Airways. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Boarding
Overall
Crew
Entertainment
Food
Reviews
This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Comfort
Boarding
Overall
Crew
Entertainment
Food
Reviews
This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Comfort
Boarding
Overall
Crew
Entertainment
Food
Reviews
This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.