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 | $500 (Delta) |
One-way from | $223 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $920 |
Good round-trip deal | $445 or less |
Good one-way deal | $382 or less |
Fly from
Fly to
Route
Depart
Return
Price
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Sun 3/15
5:25 pm-10:35 am
1 stop12h 10m
Lisbon Humberto Delgado
Thu 3/26
5:00 am-7:59 pm
2 stops19h 59m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Thu 2/5
6:00 pm-1:20 pm
1 stop13h 20m
Lisbon Humberto Delgado
Fri 2/13
6:10 am-2:10 pm
1 stop14h 00m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Sun 4/12
2:55 pm-9:05 am
1 stop12h 10m
Lisbon Humberto Delgado
Tue 4/28
6:35 am-2:15 pm
1 stop13h 40m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Thu 3/5
7:00 am-8:55 am
1 stop19h 55m
Lisbon Humberto Delgado
Fri 3/13
10:55 am-10:01 pm
1 stop16h 06m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Tue 3/17
10:40 am-3:40 pm
2 stops24h 00m
Lisbon Humberto Delgado
Sun 3/22
6:00 pm-9:34 pm
2 stops32h 34m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Tue 2/17
9:45 pm-9:55 am
1 stop30h 10m
Lisbon Humberto Delgado
Sat 3/14
6:40 pm-7:45 pm
1 stop30h 05m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Sun 1/25
12:38 pm-8:10 am
2 stops13h 32m
Lisbon Humberto Delgado
Sun 2/1
10:15 am-7:17 pm
2 stops15h 02m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Sat 1/17
7:20 pm-4:05 pm
1 stop14h 45m
Lisbon Humberto Delgado
Sat 1/24
7:05 am-8:53 pm
2 stops19h 48m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Wed 1/7
6:05 pm-9:20 am
2 stops33h 15m
Lisbon Humberto Delgado
Thu 1/15
11:20 am-1:15 pm
2 stops31h 55m
ChicagoLisbon
ORD - LIS
ORDLIS
Chicago O'Hare Intl
Sun 2/1
1:58 pm-3:10 pm
2 stops19h 12m
Lisbon Humberto Delgado
Sun 2/15
5:00 am-7:19 pm
2 stops20h 19m
| 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 | |
| Price Accuracy2 stars | Trust Score*2 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 $430). Flying from Chicago O'Hare Intl Airport to Lisbon in June is currently the most expensive (average of $727). 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 28% 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 42% 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 42% of flights being delayed.
Madrid (MAD) – chosen by Cheapflights users on 33% of 1-stop itineraries from Chicago O'Hare Intl Airport to Lisbon on Cheapflights.
Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $397.
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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Sunderesh,Dec 2025
AUS - EWR
Boarding
Food
Crew
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Overall
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Reviews
Sunderesh,Dec 2025
AUS - EWR
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Sunderesh,Dec 2025
AUS - EWR
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Sunderesh,Dec 2025
AUS - EWR
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Sunderesh,Dec 2025
AUS - EWR
Boarding
Food
Crew
Comfort
Overall
Entertainment
Reviews
Sunderesh,Dec 2025
AUS - EWR
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$369 | Average$472 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$396 | Average$561 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$441 | Average$778 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$470 | Average$648 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$489 | Average$856 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$489 | Average$682 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$494 | Average$743 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$505 | Average$809 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$527 | Average$634 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$538 | Average$786 | FlexibilityNo cancel fee | On-time69% |