Cheap flights from Portugal to Chicago from $275
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 Chicago departing on 10/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
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 Portugal to Chicago
Recent round-trip flight deals from Portugal to Chicago
Recent one-way flight deals from Portugal to Chicago
Recent last minute flight deals from Portugal to Chicago
Recent direct flight deals from Portugal to Chicago
TAP AIR PORTUGAL flights from Portugal to Chicago O'Hare Intl Airport
Our best TAP AIR PORTUGAL deals on Portugal to Chicago O'Hare Intl Airport flight tickets
Iberia flights from Portugal to Chicago O'Hare Intl Airport
Our best Iberia deals on Portugal to Chicago O'Hare Intl Airport flight tickets
See travel insights to Chicago from
How to get the cheapest flight ticket from Portugal to Chicago O'Hare Intl Airport
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 Chicago O'Hare Intl Airport?
The month of April is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Portugal averaging around $746.
What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?
The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Sunday when prices can be found for as low as $784. This is often the case because there is less demand to fly during this day of the week. On the other hand, Wednesday is the most expensive day to depart from Portugal because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,361.
What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?
Flying to Chicago O'Hare Intl Airport from Portugal at noon is the least expensive time of day to depart. momondo users have found prices as low as $886 when looking at flights departing at noon. Try not to purchase tickets in the morning because they tend to be around $1,145. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Portugal to Chicago O'Hare Intl flight route?
Fly from Lisbon Humberto Delgado to Chicago O'Hare Intl for the best Portugal - Chicago O'Hare Intl flight prices
What cabin class options are available on Portugal to Chicago O'Hare Intl flights?
There are 3 cabin classes available to choose from on Portugal to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Portugal to Chicago O'Hare Intl Airport flights?
You could potentially save up to 16% on your flight if you consider stops on a Portugal to Chicago O'Hare Intl Airport flight.
What is the cheapest airline that flies from Portugal to Chicago O'Hare Intl?
TAP AIR PORTUGAL, Aer Lingus, and Scandinavian Airlines are the most popular carriers operating from Portugal to Chicago O'Hare Intl
What airlines fly to Chicago O'Hare Intl Airport?
United Airlines, TAP AIR PORTUGAL and Aer Lingus are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from Portugal according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 4 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Portugal to Chicago O'Hare Intl Airport on average per day?
As of June 2025, 1 flights take off from Portugal and land in Chicago O'Hare Intl Airport each day. The most common flight departure time for this route is 12:00PM, with 100% of daily flights taking off in the afternoon.
How many flights depart from Portugal to Chicago O'Hare Intl Airport on average per week?
As of June 2025, there are 8 flights per week flying from Portugal to Chicago O'Hare Intl Airport. The most common day of the week flights depart is Wed, with 25% of flights taking off on this day.
Cheap Portugal to Chicago O'Hare Intl Airport flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portugal to Chicago O'Hare Intl Airport
When did momondo last update prices for flights from Portugal to Chicago O'Hare Intl Airport?
Prices for flights from Portugal to Chicago O'Hare Intl Airport are updated daily.
How many operators does momondo search for flights from Portugal to Chicago O'Hare Intl Airport?
There are 4 operators available for flights from Portugal to Chicago O'Hare Intl Airport as of June 2025.
How old do you have to be to fly from Portugal to Chicago O'Hare Intl Airport?
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 Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Portugal to Chicago O'Hare Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from Portugal to Chicago O'Hare Intl Airport is Airbus A330-900neo, representing 50.00% of all bookings. The subsequent popular models are Airbus A330 at 45.16% and Airbus A330-200 at 4.84%.
Best airlines flying from Portugal to Chicago O'Hare Intl Airport
Compare and see reviews for airlines that fly from Portugal to Chicago O'Hare Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $579 | Free Cancellation | Rating 7.1 1,118 reviews | |||
| PriceFrom $580 | Free Cancellation | Rating 7.1 1,890 reviews | |||
| PriceFrom $650 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $733 | Free Cancellation | Rating 7.4 8,801 reviews |
Traveling to a place near Chicago?
Book flights to Chicago if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Portugal to Chicago?
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 Portugal to Chicago for you.
Can I find flights from Portugal to Chicago with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Portugal to Chicago flights to just show those with flexible booking policies.
How can momondo help me find flights from Portugal to Chicago?
momondo helps you find the best flight between Portugal and Chicago 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 Portugal to Chicago right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from Portugal and alert you when they change.