Porto to Chicago (OPO–ORD) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
While no nonstop service exists between OPO and ORD, 1-stop connecting options are available.
Connection Landscape
On-Time Performance
Other ways to reach Chicago from Porto
| Metric | OPO→ORD | SCQ→ORD | LIS→ORD |
|---|---|---|---|
| Distance from OPO | – | 115 mi | 172 mi |
| Nonstop airlines | – | 1 | 2 |
| Weekly flights | – | – | 10 |
Travel Essentials
OPO: WEST · ORD: CDT
When it's 6:00 PM in Porto, it's 12:00 PM in Chicago.
Portugal is part of the US Visa Waiver Program. Portuguese passport holders enter the United States for up to 90 days without a visa, but must obtain an approved ESTA (Electronic System for Travel Authorization) before boarding. The ESTA costs USD 21, is valid for 2 years or until the passport expires, and covers multiple entries. Apply at the official CBP site (esta.cbp.dhs.gov) at least 72 hours before departure.
The 90-day stay cannot be extended, and you cannot change immigration status while in the US on the Visa Waiver Program.
CTA Blue Line runs 24/7 from O'Hare to downtown Chicago (45 min, $5). Taxis use a flat-rate zone system; downtown is around $40–45 plus tip. Ride-shares are typically $30–50.The Airport Transit System (ATS) connects all terminals and parking. Metra commuter rail does not serve O'Hare directly; transfer downtown via Blue Line.
Continental climate with four distinct seasons. Summers are warm and humid (25–32°C) with afternoon thunderstorms. Winters are cold (−10 to −2°C) with heavy snowfall that regularly delays flights December through March.
Spring and fall are mild but unpredictable. Pack layers. Lake Michigan moderates temperatures near the lakefront, but O'Hare sits inland and runs colder.
OPO–ORD Quick Facts
Frequently Asked Questions
Connecting Options and Alternatives
1-stop connecting options are also available, commonly via Toronto Pearson, Newark Liberty and Lisbon Humberto Delgado. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Santiago de Compostela (SCQ) and Lisbon (LIS).