Cheap flights from Illinois to Portugal from $233
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Portugal departing on 4/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Illinois to Portugal
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
United Airlines flights from Illinois to Portugal
Our best United Airlines deals on Illinois to Portugal flight tickets
Icelandair flights from Illinois to Portugal
Our best Icelandair deals on Illinois to Portugal flight tickets
See travel insights to Portugal from
How to get the cheapest flight ticket from Illinois to Portugal
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 Portugal?
The cheapest month to fly to Portugal from Illinois is in February. Flight prices, which tend to average around $558, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from Illinois during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $588.
What is the cheapest day to depart on your flight to Portugal?
According to our data, Wednesday is the cheapest day to fly to Portugal from Illinois. The lowest ticket price found for a Wednesday departure recently was $605. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Thursday, with ticket prices averaging around $928.
What is the cheapest time of day to depart on your flight to Portugal?
Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Illinois to Portugal during this time can be as low as $543. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $805 per ticket.
What is the cheapest Illinois to Portugal flight route?
Fly from Chicago O'Hare Intl to Lisbon Humberto Delgado for the best Illinois - Portugal flight prices
How far in advance should I book a flight to Portugal?
You are more likely to see cheaper flights to Portugal from Illinois when booking 7 weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $785 when searching 7 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Illinois for as low as $715 on momondo.
What cabin class options are available on Illinois to Portugal flights?
There are 3 cabin classes available to choose from on Illinois to Portugal 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 Illinois to Portugal?
Icelandair, TAP AIR PORTUGAL, and Air Transat are the most popular carriers operating from Illinois to Portugal
What airlines fly to Portugal?
TAP AIR PORTUGAL, United Airlines and British Airways are the top three most popular airlines that fly to Portugal from Illinois according to our data. TAP AIR PORTUGAL is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 18 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.
How many flights depart from Illinois to Portugal on average per week?
As of March 2025, 2 flights take off from Illinois and land in Portugal each week. The most common flight departure day for this route is Sun, with 100% of weekly flights taking off on this day.
Cheap Illinois to Portugal flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Portugal
Best Price Found | $233 |
|---|---|
Fastest flight time | 7h 40m |
Direct flights | Mon, Tue, Thu, Fri and Sat |
Airports in Portugal | 5 airports |
When did momondo last update prices for flights from Illinois to Portugal?
Prices for flights from Illinois to Portugal are updated daily.
How many operators does momondo search for flights from Illinois to Portugal?
As of March 2025, there are 18 operators available to choose from for flights from Illinois to Portugal.
How old do you have to be to fly from Illinois to Portugal?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Portugal.
What documentation or ID do you need to fly to Portugal?
The required travel and health documents for your Portugal 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 Portugal. 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 Illinois to Portugal?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Portugal is Boeing 787 Dreamliner, representing 19.24% of all bookings. The subsequent popular models are Airbus A330 at 18.34%, Boeing 787-8 Dreamliner at 15.81%, and Airbus A330-900neo at 12.79%.
Best airlines flying from Illinois to Portugal
Compare and see reviews for airlines that fly from Illinois to Portugal with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $419 | Free Cancellation | Rating 7.1 1,827 reviews | |||
| PriceFrom $453 | Free Cancellation | Rating 7.0 477 reviews | |||
| PriceFrom $463 | Free Cancellation | Rating 7.6 1,270 reviews | |||
| PriceFrom $468 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $472 | Free Cancellation | Rating 7.0 2,644 reviews | |||
| PriceFrom $490 | Free Cancellation | Rating 7.4 641 reviews | |||
| PriceFrom $514 | Free Cancellation | Rating 8.0 7,973 reviews | |||
| PriceFrom $518 | Free Cancellation | Rating 6.6 6,723 reviews | |||
| PriceFrom $525 | Free Cancellation | Rating 7.4 8,631 reviews | |||
| PriceFrom $527 | Free Cancellation | Rating 7.8 1,320 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Illinois to Portugal?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Portugal for you.
Can I find flights from Illinois to Portugal with flexible booking policies on momondo?
Flights from Illinois to Portugal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Illinois to Portugal?
Once all potential Illinois to Portugal flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Illinois to Portugal right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Portugal, momondo offers a useful price alert feature which will track prices for flights to Portugal from Illinois and alert you when they change.