$251 Find Cheap Flights from Illinois to Portugal

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Portugal.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Illinois to Portugal with an airline and back with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Illinois to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Portugal is Lisbon Humberto Delgado Airport (LIS), with an average flight price of $442.

Based on KAYAK data, the cheapest day to fly to Portugal is Wednesday where round-trip tickets can be as cheap as $600. On the other hand, the most expensive day to fly is Thursday, where round-trip prices are $900 on average.

The cheapest time of day to fly to Portugal is generally at night, when round-trip flights cost $542 on average. Morning departures are around 2% cheaper than evening flights, on average. The most expensive time of day to fly to Portugal is generally in the evening, which is peak travel time and where the average cost of a ticket is $808.

The cheapest ticket to Portugal from Illinois found in the last 72 hours was to Lisbon, at $498 round-trip. The most popular route is Chicago O'Hare Intl Airport (ORD) to Lisbon (LIS) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $498.

The cheapest month for flights from Illinois to Portugal is January, when tickets cost $546 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,090 and $977 respectively.

To get a below average price on the flight from Illinois to Portugal, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

An average nonstop flight from Illinois to Portugal takes 18h 07m, covering a distance of 3818 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Lisbon (LIS) with an average flight time of 7h 55m.

Based on KAYAK flight searches, the most popular destination is Lisbon (79% of total searches to Portugal). The next most popular destinations are Porto (14%) and Faro (3%). Searches for flights to Ponta Delgada (2%), to Funchal (2%) and to Lajes (0%) are also popular.