Porto (OPO) → Chicago (ORD)
About Porto to Chicago Flights
Discover the best flights from Porto to Chicago, covering 6,332 km in approximately 8h 25m. Porto (OPO) to Chicago (ORD) is one of the major long-haul routes connecting Portugal and United States. With 7 major airlines operating this route, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from Porto to Chicago.
12-Month Price History
Flight prices from Porto to Chicago vary significantly throughout the year. February typically offers the best deals with average prices around $1159, while July sees the highest prices, averaging $1961. Savvy travelers can save up to 41% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
124 days
For best prices
Booking Tips
For the best prices on Porto to Chicago flights, we recommend booking 74 days in advance. International flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
Kalitta Air K4 | $1990 | $8710 | $10650 |
SkyWest Airlines OO | $1990 | $8580 | $11730 |
TAP Air Portugal TP | $2260 | $7260 | $11660 |
United Airlines UA | $2330 | $6410 | $11370 |
American Airlines AA | $2390 | $7680 | $13260 |
Portugália Airlines NI | $2430 | $8330 | $11990 |
Delta Air Lines DL | $2580 | $8460 | $14410 |
Kalitta Air
K4
Economy
$1990
Business
$8710
First
$10650
SkyWest Airlines
OO
Economy
$1990
Business
$8580
First
$11730
TAP Air Portugal
TP
Economy
$2260
Business
$7260
First
$11660
United Airlines
UA
Economy
$2330
Business
$6410
First
$11370
American Airlines
AA
Economy
$2390
Business
$7680
First
$13260
Portugália Airlines
NI
Economy
$2430
Business
$8330
First
$11990
Delta Air Lines
DL
Economy
$2580
Business
$8460
First
$14410
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
Porto → Milwaukee
Francisco Sá Carneiro (OPO) to Milwaukee Mitchell International (MKE)
Distance: 6,281 km
Average price: $1355
Porto → Chicago
Francisco Sá Carneiro (OPO) to Chicago Midway International (MDW)
Distance: 6,331 km
Average price: $1365
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Frequently Asked Questions
How long is the flight from Porto to Chicago?
The flight time from Porto (OPO) to Chicago (ORD) is approximately 8 hours and 25 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Porto and Chicago?
The aerial distance between Porto and Chicago is 6,332 kilometers (3,935 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Porto to Chicago?
Several airlines operate flights between Porto and Chicago, including American Airlines, United Airlines, TAP Air Portugal and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from Porto to Chicago?
Based on historical data, February typically offers the lowest airfares for flights from Porto to Chicago. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to Chicago?
For the best prices on Porto to Chicago flights, we recommend booking 62 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Porto to Chicago?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of Portugal traveling to United States should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between Porto and Chicago?
Porto operates on Europe/Lisbon time zone, while Chicago is in the America/Chicago time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.