Money hackUse a no-foreign-fee card
A debit or credit card without foreign transaction fees saves 2–3% on every purchase and ATM withdrawal abroad.
.jpg/1280px-Lisboa_-_Portugal_(52597836992).jpg)
✈️ Cheap flights from Chicago to Lisbon
Compare Chicago – Lisbon fares from hundreds of airlines and travel sites. The trip is about 6,435 km and takes around 8 h 25 min nonstop.
📏 Distance6,435 km (3,999 miles)
⏱️ Flight timeabout 8 h 25 min nonstop
🕒 Time differenceLisbon is 6 hours ahead of Chicago
🛫 AirportsORD, MDW → LIS
💸 Cheapest monthApr 2027 – from $803
📅 Cheapest months to fly Chicago → Lisbon
- $852Oct 26
- $810Jan 27
- $803Apr 27
Lowest fares our Fare agent saw for each month. Prices change daily.
🌞 Best time to visit Portugal
Best: April to June and September to October – warm, sunny weather with fewer crowds than midsummer.
Shoulder season: July to August for beaches (hot and busy), or March and November for quieter city breaks.
Weather by month in Lisbon
- 15°Jan🌧
- 16°Feb🌧
- 19°Mar⛅
- 20°Apr⛅
- 23°May⛅
- 27°Jun☀️
- 29°Jul☀️
- 29°Aug☀️
- 27°Sep☀️
- 23°Oct⛅
- 18°Nov🌧
- 15°Dec🌧
Average daytime highs (°C) and how rainy each month is.
📍 Things to do when you land
- Ride Tram 28 in Lisbon – Rattle up and down Lisbon's hills through Alfama, Graça and Baixa on a vintage yellow tram.
- Taste pastéis de nata – Bite into a warm custard tart dusted with cinnamon, ideally in Belém where the recipe is famous.
- Explore Sintra's palaces – Wander colourful Pena Palace and the mysterious gardens of Quinta da Regaleira.
- Sip port in Porto – Tour the cellars of Vila Nova de Gaia and watch the sunset over the Douro.
💡 Tips for a cheaper ticket
Flights hackSet price alerts, then wait
Turn on fare alerts for your route instead of checking every day – prices move up and down, alerts catch the dips.
Planning hackTravel in shoulder season
The weeks just before or after peak season bring lower prices, fewer crowds and usually good weather.
Chicago to Lisbon flights: questions
How long is the flight from Chicago to Lisbon?
A nonstop flight from Chicago to Lisbon takes about 8 h 25 min for the 6,435 km (3,999 miles) trip. Flights with a connection take longer – usually 2 to 5 hours more.
How far is Lisbon from Chicago?
Lisbon is about 6,435 km (3,999 miles) from Chicago as the plane flies.
What is the time difference between Chicago and Lisbon?
Right now Lisbon is 6 hours ahead of Chicago. Daylight saving changes can shift this by an hour during the year.
What is the cheapest month to fly from Chicago to Lisbon?
Recently the lowest fares were in Apr 2027, from about $803. Prices change daily.
Which airports serve Chicago and Lisbon?
From Chicago: Chicago O'Hare Intl (ORD), Chicago Midway Intl (MDW). In Lisbon: Lisbon Humberto Delgado (LIS).
Do I need a visa for Portugal?
It depends on your passport – see our Portugal visa & entry guide.
More flights from Chicago
More flights to Lisbon
Searches open our travel partner in a new tab. We may earn a small commission when you book – it never changes the price you pay, and it keeps this site free.