
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $413 (FlightHub) |
One-way from | $224 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $657 |
Good round-trip deal | $443 or less |
Good one-way deal | $255 or less |
Fly from
Fly to
Route
Depart
Return
Price
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
Wed 1/14
7:10 pm-7:00 pm
1 stop17h 50m
Porto
Sat 1/24
8:00 pm-2:45 pm
1 stop24h 45m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
Tue 3/3
4:10 pm-9:30 am
1 stop11h 20m
Porto
Wed 3/11
6:00 am-4:20 pm
1 stop15h 20m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
Mon 11/17
2:30 pm-9:30 am
1 stop13h 00m
Porto
Mon 11/24
12:05 pm-4:20 pm
1 stop34h 15m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
Wed 3/4
12:35 pm-9:30 am
2 stops14h 55m
Porto
Tue 3/10
6:00 am-4:20 pm
1 stop15h 20m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
Sun 11/30
6:50 pm-11:15 am
1 stop34h 25m
Porto
Mon 12/8
12:05 pm-4:20 pm
1 stop34h 15m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
Wed 12/3
10:45 am-10:30 am
2 stops17h 45m
Porto
Wed 12/10
6:00 am-2:20 pm
1 stop14h 20m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
Wed 12/3
4:25 pm-3:25 pm
1 stop17h 00m
Porto
Tue 12/9
11:15 am-2:20 pm
1 stop33h 05m
ChicagoFaro
ORD - FAO
ORDFAO
Chicago O'Hare Intl
Fri 12/5
8:15 pm-11:50 pm
1 stop21h 35m
Faro
Fri 12/12
6:05 am-3:25 pm
1 stop15h 20m
ChicagoPorto
ORD - OPO
ORDOPO
Chicago O'Hare Intl
Mon 3/9
6:20 pm-10:30 am
1 stop11h 10m
Porto
Mon 3/16
11:15 am-4:37 pm
2 stops34h 22m
ChicagoFaro
ORD - FAO
ORDFAO
Chicago O'Hare Intl
Wed 1/14
7:10 pm-3:45 pm
1 stop14h 35m
Faro
Thu 3/12
4:35 pm-4:25 pm
1 stop28h 50m
Currently, December is the cheapest month in which you can book a flight from Chicago to Portugal (average of $411). Flying from Chicago to Portugal in June is currently the most expensive (average of $695). 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.
It’s typically best to fly out from Chicago to Portugal at noon. Doing so could potentially save you 9% on the flight price compared to flying in the morning, which is usually more expensive.
Travelers seeking maximum savings on their Chicago to Portugal flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
Tim,Sep 2025
IAD - GSP
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
Tim,Sep 2025
IAD - GSP
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
Tim,Sep 2025
IAD - GSP
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
Tim,Sep 2025
IAD - GSP
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
Tim,Sep 2025
IAD - GSP
Food
Entertainment
Boarding
Crew
Comfort
Overall
Reviews
Tim,Sep 2025
IAD - GSP
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$369 | Average$478 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$425 | Average$564 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$441 | Average$715 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$464 | Average$819 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$470 | Average$662 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$487 | Average$754 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$490 | Average$640 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$496 | Average$721 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$497 | Average$891 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$504 | Average$751 | FlexibilityNo cancel fee | On-time70% |