For a quick departure from ORD, use the "L" train for reliable access, avoiding unpredictable Chicago traffic.

Most accurate provider | Mytrip 3 stars  | 
|---|---|
Most trusted provider | Mytrip 3 stars  | 
Round-trip from | $487 (United Airlines)  | 
One-way from | $254 (Mytrip)  | 
Popular in | June | 
Cheapest in | January | 
Average price | $599 | 
Good round-trip deal | $408 or less | 
Good one-way deal | $321 or less | 
Fly from
Fly to
Route
Depart
Return
Price
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Wed 2/25
10:11 am-11:20 am
2 stops19h 09m
Lisbon Humberto Delgado
Tue 3/3
11:25 am-2:20 pm
1 stop32h 55m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Sun 2/22
2:03 pm-11:20 am
2 stops15h 17m
Lisbon Humberto Delgado
Thu 3/5
11:25 am-2:20 pm
1 stop32h 55m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Mon 2/23
10:35 am-8:00 am
2 stops15h 25m
Lisbon Humberto Delgado
Thu 3/5
11:25 am-2:20 pm
1 stop32h 55m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Mon 2/23
10:45 am-8:00 am
2 stops15h 15m
Lisbon Humberto Delgado
Wed 3/4
5:00 am-2:20 pm
1 stop15h 20m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Wed 3/11
6:20 pm-5:30 pm
1 stop18h 10m
Lisbon Humberto Delgado
Wed 3/18
5:00 am-9:56 pm
2 stops21h 56m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Sun 2/1
5:27 pm-3:10 pm
2 stops15h 43m
Lisbon Humberto Delgado
Tue 3/31
5:00 am-6:10 pm
2 stops19h 10m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Fri 1/9
9:54 am-8:50 am
1 stop16h 56m
Lisbon Humberto Delgado
Mon 1/19
8:45 pm-2:55 pm
1 stop24h 10m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Wed 12/3
10:45 am-10:35 am
2 stops17h 50m
Lisbon Humberto Delgado
Fri 12/12
11:25 am-12:01 am
2 stops18h 36m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Tue 3/10
10:35 am-11:20 am
2 stops19h 45m
Lisbon Humberto Delgado
Tue 3/17
5:30 am-9:35 pm
2 stops21h 05m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Thu 11/13
9:45 pm-10:05 am
1 stop30h 20m
Lisbon Humberto Delgado
Tue 11/18
7:05 am-6:45 pm
1 stop17h 40m
| Provider | Price Accuracy | Trust Score* | 
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | 
The best time to book flights from Chicago O'Hare Intl Airport to Lisbon is 15 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Lisbon (average of $438). Flying from Chicago O'Hare Intl Airport to Lisbon in June is currently the most expensive (average of $745). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
A simple way to save on the total cost of your ticket is to fly from Chicago O'Hare Intl Airport to Lisbon in the evening. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight in the afternoon.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Lisbon flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
About 41% of weekly flights between Chicago and Lisbon have experienced delays in the past year, with the average delay time being 138 minutes.
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Thursday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 41% of flights being delayed.
Madrid (MAD) – chosen by Cheapflights users on 25% of 1-stop itineraries from Chicago O'Hare Intl Airport to Lisbon on Cheapflights.
Flights via London (LHR) have the shortest average one-way travel time for 1-stop routes: 12h 20m.
Flights via London (LHR) have the shortest average one-way travel time for 1-stop routes: 12h 20m.
Flights via London (LHR) offer the fastest connection on this route, with an average layover time of 1h 48m.
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Sebrena,Oct 2025
IAH - RSW
Food
Overall
Entertainment
Crew
Boarding
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Sebrena,Oct 2025
IAH - RSW
Food
Overall
Entertainment
Crew
Boarding
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Overall
Entertainment
Crew
Boarding
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Overall
Entertainment
Crew
Boarding
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Food
Overall
Entertainment
Crew
Boarding
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
| Airline | Cheapest | Average | Flexibility | On-time | 
|---|---|---|---|---|
| Cheapest$369 | Average$472 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$425 | Average$564 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$441 | Average$778 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$470 | Average$648 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$484 | Average$848 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$496 | Average$685 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$497 | Average$702 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$510 | Average$760 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$537 | Average$768 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$538 | Average$624 | FlexibilityNo cancel fee | On-time75% |