Q: What is the typical price of a round-trip flight between Chicago and Porto?

Prices are currently low for flights on this route. Typical prices usually range from $634 to $826. The lowest price recently found on this route was $462.

Question 1

Which layover airport has the shortest connection time from Chicago to Porto?

Accepted Answer

Newark (EWR) has the shortest average layover time for this route: 1h 08m.

Question 2

What is the cheapest airline that flies from Chicago to Porto?

Accepted Answer

Delta, KLM, and Scandinavian Airlines are the most popular carriers operating from Chicago to Porto

Question 3

Which layover airport has the shortest travel time from Chicago to Porto?

Accepted Answer

Flights connecting via Newark (EWR) have the shortest average one-way travel time: 10h 29m.

Question 4

How have Chicago to Porto flight prices changed over time?

Accepted Answer

As of December 2025, prices for Chicago to Porto flights are approximately 1% more expensive when compared to flights at the same time last year.

Question 5

What is the typical price of a round-trip flight between Chicago and Porto?

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from $634 to $826.
The lowest price recently found on this route was $462.

Question 6

What is the cheapest month to fly to Porto?

Accepted Answer

The month of April is, on average, the cheapest month to fly to Porto from Chicago, with most prices found around $616. If you aren’t able to travel during the month of April, then book flights to Porto from Chicago during February instead. Flights to Porto in February, while not as cheap as those in April, still average around $628.

Question 7

Which airport is the most popular layover for flights between Chicago and Porto?

Accepted Answer

Lisbon (LIS) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

Question 8

How often are flights from Chicago to Porto delayed?

Accepted Answer

Historically, on average around 100% of flights between Chicago and Porto have experienced a delay on any given week. The average delay length over the past 12 months has been 319 minutes.

Question 9

What airlines fly to Porto?

Accepted Answer

United Airlines, TAP AIR PORTUGAL and Iberia are the top three most popular airlines that fly to Porto from Chicago according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 10 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

Question 10

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Sunday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Question 11

What is the cheapest day to depart on your flight to Porto?

Accepted Answer

The cheapest day to depart on your flight to Porto is on a Monday when prices can be found for as low as $708. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $808. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

Question 12

Which airline has the best punctuality record on Chicago to Porto flights?

Accepted Answer

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 100% of their flights experiencing any sort of delay.

Question 13

Which layover airport offers the lowest fares from Chicago to Porto?

Accepted Answer

Flights via Zurich (ZRH) offer the lowest average round-trip price of $519.

Question 14

How far in advance should I book a flight to Porto?

Accepted Answer

You are more likely to see cheaper flights to Porto from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $673 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Chicago for as low as $613 on momondo.

Question 15

What is the most punctual flight time for Chicago to Porto flights?

Accepted Answer

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Question 16

What is the cheapest time of day to depart on your flight to Porto?

Accepted Answer

In the evening is the cheapest time of day to fly from Chicago to Porto when you can find flight prices for as low as $611. Flying to Porto in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,018 on average. Flights to Porto from Chicago at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Question 17

When did momondo last update prices for flights from Chicago to Porto Airport?

Accepted Answer

Prices for flights from Chicago to Porto Airport refresh daily.

Question 18

How many operators does momondo search for flights from Chicago to Porto Airport?

Accepted Answer

As of December 2025, there are 10 operators available to choose from for flights from Chicago to Porto Airport.

Question 19

How old do you have to be to fly from Chicago to Porto Airport?

Accepted Answer

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 Porto Airport.

Question 20

What documentation or ID do you need to fly to Porto Airport?

Accepted Answer

The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Fastest flight time	11h 10m
Direct flights	None

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $480	Free Cancellation	Rating 7.2 2,095 reviews	Search TAP AIR PORTUGAL flights
Iberia	PriceFrom $488	Free Cancellation	Rating 7.0 3,056 reviews	Search Iberia flights
British Airways	PriceFrom $504	Free Cancellation	Rating 6.7 7,605 reviews	Search British Airways flights
Lufthansa	PriceFrom $507	Free Cancellation	Rating 6.8 7,649 reviews	Search Lufthansa flights
KLM	PriceFrom $531	Free Cancellation	Rating 7.7 1,434 reviews	Search KLM flights
United Airlines	PriceFrom $544	Free Cancellation	Rating 7.4 9,105 reviews	Search United Airlines flights
American Airlines	PriceFrom $553	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights
SWISS	PriceFrom $558	Free Cancellation	Rating 7.5 1,817 reviews	Search SWISS flights
Delta	PriceFrom $638	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights
Air Canada	PriceFrom $646	Free Cancellation	Rating 7.1 10,551 reviews	Search Air Canada flights

Cheap flights from Chicago to Porto from $286

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 Porto departing on 3/16. 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 Porto

What is the typical price of a round-trip flight between Chicago and Porto?

What is the cheapest month to fly to Porto?

What is the cheapest day to depart on your flight to Porto?

What is the cheapest time of day to depart on your flight to Porto?

How far in advance should I book a flight to Porto?

How have Chicago to Porto flight prices changed over time?

As of December 2025, prices for Chicago to Porto flights are approximately 1% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Chicago to Porto?

Delta, KLM, and Scandinavian Airlines are the most popular carriers operating from Chicago to Porto

What airlines fly to Porto?

How often are flights from Chicago to Porto delayed?

Historically, on average around 100% of flights between Chicago and Porto have experienced a delay on any given week. The average delay length over the past 12 months has been 319 minutes.

What is the most punctual flight time for Chicago to Porto flights?

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Sunday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Chicago to Porto flights?

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 100% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Chicago and Porto?

Lisbon (LIS) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Chicago to Porto?

Flights via Zurich (ZRH) offer the lowest average round-trip price of $519.

Which layover airport has the shortest travel time from Chicago to Porto?

Flights connecting via Newark (EWR) have the shortest average one-way travel time: 10h 29m.

Which layover airport has the shortest connection time from Chicago to Porto?

Newark (EWR) has the shortest average layover time for this route: 1h 08m.

When to book flights from Chicago to Porto

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When did momondo last update prices for flights from Chicago to Porto Airport?

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How old do you have to be to fly from Chicago to Porto Airport?

What documentation or ID do you need to fly to Porto Airport?

What is the most popular airline from Chicago to Porto?

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