Cheap flights from Porto to Illinois from $297
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to Illinois departing on 3/24. 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 Porto to Illinois
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Cheap bus & train deals from Porto to Illinois
All round-trip flight deals from Porto to Illinois
British Airways flights from Porto to Illinois
Our best British Airways deals on Porto to Illinois flight tickets
Lufthansa flights from Porto to Illinois
Our best Lufthansa deals on Porto to Illinois flight tickets
See travel insights to Illinois from
How to get the cheapest flight ticket from Porto to Illinois
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 Illinois?
The cheapest month to fly to Illinois from Porto is in February. Flight prices, which tend to average around $652, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $692.
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart from Porto to Illinois is on a Saturday when prices can be found for as low as $581. Flights from Porto to Illinois on a Friday will generally be more expensive and average around $956. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
Cheap Porto to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Porto to Illinois
When did momondo last update prices for flights from Porto Airport to Illinois?
Prices for flights from Porto Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Porto Airport to Illinois?
There is 1 operator available for flights from Porto Airport to Illinois as of January 2025.
How old do you have to be to fly from Porto Airport to Illinois?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Porto Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois 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 Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Porto to Illinois
Compare and see reviews for airlines that fly from Porto to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $846 | Free Cancellation | Rating 7.4 8,964 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Porto to Illinois?
Finding the right flight to Illinois from Porto 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 Illinois quick and easy, saving you time and money.
Can I find flights from Porto to Illinois with flexible booking policies on momondo?
Flights from Porto to Illinois 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 Porto to Illinois?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Porto.
I’m not ready to book a flight from Porto to Illinois right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Porto to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.