Cheap flights from Chicago O'Hare Intl Airport to Portugal from $231
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 O'Hare Intl Airport to Portugal departing on 10/19. 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 O'Hare Intl Airport 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 O'Hare Intl Airport is in January. Flight prices, which tend to average around $548, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Chicago O'Hare Intl Airport during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $570.
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 O'Hare Intl Airport. The lowest ticket price found for a Wednesday departure recently was $584. 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 $850.
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 O'Hare Intl Airport to Portugal during this time can be as low as $545. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $816 per ticket.
What is the cheapest Chicago O'Hare Intl to Portugal flight route?
Fly from Chicago O'Hare Intl to Lisbon Humberto Delgado for the best Chicago O'Hare Intl - 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 O'Hare Intl Airport when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $764 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Chicago O'Hare Intl Airport for as low as $738 on momondo.
What cabin class options are available on Chicago O'Hare Intl to Portugal flights?
There are 3 cabin classes available to choose from on Chicago O'Hare Intl 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 O'Hare Intl to Portugal?
TAP AIR PORTUGAL, Icelandair, and Scandinavian Airlines are the most popular carriers operating from Chicago O'Hare Intl 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 O'Hare Intl Airport 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 O'Hare Intl Airport to Portugal on average per week?
As of June 2025, there are 4 flights per week flying from Chicago O'Hare Intl Airport to Portugal. The most common day of the week flights depart is Wed, with 50% of flights taking off on this day.
Cheap Chicago O'Hare Intl Airport to Portugal flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Portugal
Best Price Found | $231 |
|---|---|
Fastest flight time | 7h 55m |
Direct flights | Mon, Tue, Thu, Sat and Sun |
Airports in Portugal | 5 airports |
When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Portugal?
Prices for flights from Chicago O'Hare Intl Airport to Portugal are updated daily.
How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Portugal?
As of June 2025, there are 18 operators available to choose from for flights from Chicago O'Hare Intl Airport to Portugal.
How old do you have to be to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents you'll need for your trip to Portugal 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 Portugal. 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 Chicago O'Hare Intl Airport to Portugal?
Based on momondo bookings for flights between Chicago O'Hare Intl Airport and Portugal, the leading plane model is Boeing 787 Dreamliner, making up 21.65% of the total bookings. Other popular models include Airbus A330 with 20.72%, Boeing 787-8 Dreamliner with 19.36%, and Airbus A330-900neo with 17.38%.
Best airlines flying from Chicago O'Hare Intl Airport to Portugal
Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Portugal with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $415 | Free Cancellation | Rating 7.1 1,885 reviews | |||
| PriceFrom $444 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom $463 | Free Cancellation | Rating 7.6 1,290 reviews | |||
| PriceFrom $468 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $472 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom $472 | Free Cancellation | Rating 7.3 1,387 reviews | |||
| PriceFrom $490 | Free Cancellation | Rating 7.4 652 reviews | |||
| PriceFrom $498 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $504 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $517 | Free Cancellation | Rating 7.5 1,623 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Chicago to Portugal?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Portugal. momondo saves you time and could save you money on your trip.
Can I find flights from Chicago to Portugal with flexible booking policies on momondo?
Yes. All flights to Portugal from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Chicago to Portugal?
Once you have performed a search for Chicago to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
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.