Cheap flights from Portugal to Illinois from $341
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to Illinois departing on 5/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Portugal to Illinois
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Illinois?
The cheapest month to fly to Illinois from Portugal is in February. Flight prices, which tend to average around $634, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $700.
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart from Portugal to Illinois is on a Tuesday when prices can be found for as low as $615. Flights from Portugal to Illinois on a Wednesday will generally be more expensive and average around $1,145. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Illinois?
Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Portugal to Illinois during this time can be as low as $622. Flights at noon are often more expensive with an average ticket price of $1,005.
What is the cheapest Portugal to Illinois flight route?
Fly from Lisbon Humberto Delgado to Chicago O'Hare Intl for the best Portugal - Illinois flight prices
How far in advance should I book a flight to Illinois?
You are more likely to see cheaper flights to Illinois from Portugal when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $874 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Portugal for as low as $649 on momondo.
What cabin class options are available on Portugal to Illinois flights?
There are 3 cabin classes available to choose from on Portugal to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Portugal to Illinois?
Aer Lingus, TAP AIR PORTUGAL, and Air Serbia are the most popular carriers operating from Portugal to Illinois
What airlines fly to Illinois?
United Airlines, TAP AIR PORTUGAL and Aer Lingus are the top three most popular airlines that fly to Illinois from Portugal according to our data. United Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.
How many flights depart from Portugal to Illinois on average per week?
As of April 2025, there are 6 flights per week flying from Portugal to Illinois. The most common day of the week flights depart is Wed, with 33% of flights taking off on this day.
Cheap Portugal to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portugal to Illinois
Best Price Found | $341 |
|---|---|
Fastest flight time | 9h 10m |
Direct flights | Mon, Tue, Thu, Fri, Sat and Sun |
Airports in Illinois | 2 airports |
When did momondo last update prices for flights from Portugal to Illinois?
Prices for flights from Portugal to Illinois were last updated today.
How many operators does momondo search for flights from Portugal to Illinois?
The number of operators available for flights from Portugal to Illinois is 5 as of April 2025.
How old do you have to be to fly from Portugal to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Portugal to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Portugal to Illinois is Airbus A330-900neo (50.00% of total bookings). The next most popular plane models are Airbus A330 (44.83%) and Airbus A330-200 (5.17%).
Best airlines flying from Portugal to Illinois
Compare and see reviews for airlines that fly from Portugal to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $579 | Free Cancellation | Rating 7.0 1,076 reviews | |||
| PriceFrom $580 | Free Cancellation | Rating 7.1 1,851 reviews | |||
| PriceFrom $650 | Free Cancellation | Rating 8.0 7,934 reviews | |||
| PriceFrom $733 | Free Cancellation | Rating 7.4 8,696 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Portugal to Illinois?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portugal to Illinois. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Portugal to Illinois with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Portugal to Illinois flights to just show those with flexible booking policies.
How can momondo help me find flights from Portugal to Illinois?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Portugal.
I’m not ready to book a flight from Portugal to Illinois right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Portugal to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.