Cheap flights from Chicago to Portugal from $232
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Portugal departing on 8/6. 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 Chicago 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 Chicago 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 Chicago during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $589.
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 Chicago. The lowest ticket price found for a Wednesday departure recently was $603. 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 Saturday, with ticket prices averaging around $847.
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 Chicago to Portugal during this time can be as low as $551. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $832 per ticket.
What is the cheapest Chicago to Portugal flight route?
Fly from Chicago O'Hare Intl to Lisbon Humberto Delgado for the best Chicago - 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 Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $759 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Chicago for as low as $738 on momondo.
What cabin class options are available on Chicago to Portugal flights?
There are 3 cabin classes available to choose from on Chicago 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 Chicago to Portugal?
Icelandair, Aer Lingus, and TAP AIR PORTUGAL are the most popular carriers operating from Chicago 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 Chicago according to our data. TAP AIR PORTUGAL is the first choice among our users, with 60% 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 Chicago to Portugal on average per week?
As of July 2025, there are 2 flights per week flying from Chicago to Portugal. The most common day of the week flights depart is Mon, with 100% of flights taking off on this day.
Cheap Chicago to Portugal flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to Portugal
Best Price Found | $232 |
|---|---|
Fastest flight time | 7h 55m |
Direct flights | Mon, Tue, Thu, Fri, Sat and Sun |
Airports in Portugal | 5 airports |
When did momondo last update prices for flights from Chicago to Portugal?
Prices for flights from Chicago to Portugal refresh daily.
How many operators does momondo search for flights from Chicago to Portugal?
As of July 2025, there are 18 operators available to choose from for flights from Chicago to Portugal.
How old do you have to be to fly from Chicago 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 Chicago 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 Chicago to Portugal?
momondo data reveals that the most frequently booked plane model on the route from Chicago to Portugal is Boeing 787 Dreamliner, representing 22.70% of all bookings. The subsequent popular models are Airbus A330 at 19.49%, Boeing 787-8 Dreamliner at 19.09%, and Airbus A330-900neo at 17.03%.
Best airlines flying from Chicago to Portugal
Compare and see reviews for airlines that fly from Chicago to Portugal with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $415 | Free Cancellation | Rating 7.1 1,912 reviews | |||
| PriceFrom $444 | Free Cancellation | Rating 7.0 514 reviews | |||
| PriceFrom $463 | Free Cancellation | Rating 7.6 1,312 reviews | |||
| PriceFrom $468 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $472 | Free Cancellation | Rating 7.3 1,413 reviews | |||
| PriceFrom $473 | Free Cancellation | Rating 7.0 2,820 reviews | |||
| PriceFrom $490 | Free Cancellation | Rating 7.4 653 reviews | |||
| PriceFrom $498 | Free Cancellation | Rating 8.0 7,958 reviews | |||
| PriceFrom $504 | Free Cancellation | Rating 6.6 7,096 reviews | |||
| PriceFrom $517 | Free Cancellation | Rating 7.5 1,652 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Chicago to Portugal?
Finding the right flight to Portugal from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portugal quick and easy, saving you time and money.
Can I find flights from Chicago to Portugal with flexible booking policies on momondo?
All flight searches from Chicago to Portugal on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Chicago to Portugal?
momondo helps you find the best flight between Chicago and Portugal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Chicago 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 Chicago and alert you when they change.