Find Cheap Flights from Chicago O'Hare International to Porto (ORD - OPO)

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Wed 11/22
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When looking for a cheap flight, consider that 25% of our users selected a flight on this route for $876 or less.

FAQs for Booking Chicago O'Hare International to Porto Flights

How long does a flight from Chicago O'Hare International to Porto take?
An average nonstop flight takes 14h 50m, covering a distance of 3937 miles.
Which airlines provide the cheapest flights from Chicago O'Hare International to Porto?
In the past 3 days, the cheapest round-trip tickets were found on Lufthansa ($445), Multiple Airlines ($527) and Turkish Airlines ($658).
Do I need a passport to fly between Chicago O'Hare International and Porto?
Yes.

Book cheap flights from Chicago O'Hare International to Porto (round-trip)

Airports
Origin
Chicago
$445
only
$445
Destination
Porto
$445
only
$445
Wed, Feb 21
ORD
OPO
15h 45m
Wed, Mar 7
OPO
ORD
26h 50m
Trip: 15 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 16853 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Food
7.7
MUC
SFO
Okay 5.6

Flight attendants were great, friendly, courteous and responsive. The relaxation and mediation program was great! Boarding was fluent and easy.

No matter what you try to order on the airplane is totally disgusting. If it's not overloaded with cheese and tomato sauce then it's overcompensated with spices (salt or chili). I will never understand why it is so hard to provide simple, fresh and enjoyable meals. Chairs in economy are rarely cleaned up and one can see on the cushions that they are worn out and have lost their padding making the seats very uncomfortable. There was no foot rest available (which is such a simple addition that helps a lot) and the "holder pocket" on the seat in front was a simple net completely useless. Tables were dirty suggesting they were never cleaned and disinfected. Knowing that the highest source of viruses are the tray tables and the pockets in front I would expect attention to be focused on those- it not only impacts the health of the traveler but more important that of the crew. Why is it so hard to think of this business two fold: make revenue but mostly be kind to humans.

CLT
MUC
Okay 4.0

Late one hour. Apparently equipment failure

DEL
FRA
Excellent 8.3

Staff and flight were great. We were surrounded by kind of rude flyers. They complained when my husband moved the seat back. And they were just standing in the aisle most of the time. Person in front of me stretched her arms over the seat so her hands were dangling in front of me and fingers in my screen. I know we were in coach, but maybe another inch of separation would be nice for such long flights.

See above.

MUC
SFO
Excellent 8.3

Lufthansa arranged for pickup with a van upon disembarking from my late flight from Pisa and took me through a special passport and security checkpoint so that I was able to catch my MUC-SFO flight. Flight departed late, but pilot made up all tge lost time in flight. Crew was professional, very polite and efficient.

DEN
MUC
Mediocre 2.0

See above

See above

Wed, Jan 31
ORD
OPO
23h 50m
Thu, Feb 15
OPO
ORD
25h 50m
Trip: 16 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Feb 28
ORD
OPO
34h 55m
Sun, Mar 11
OPO
ORD
35h 35m
Trip: 12 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 16589 reviews
Overall
8.0
Boarding
7.9
Comfort
7.8
Crew
8.3
Entertainment
8.1
Food
8.0
BOS
IST
Mediocre 2.0

On the registration checking in in Boston Logan Airport they did not tell me that I as an american citizen must have a visa. After arriving to Turkey they refused me to get in and sent me back to the states. I want refund all my expenses on this trip.

IST
KHI
Mediocre 3.6

Nothing

Everything

BOM
IST
Excellent 8.0

excellent service.

internet should be free.

DEL
IST
Excellent 10.0

Superb service. Good food. Organized on boarding. Not overbooked. New planes. USB available for charging devices.

Long layover in Istanbul.

IST
IAD
Excellent 9.6

Very grateful our flight wasn't packed- this allowed us to lay down a little and sleep. The attendants were very nice and helpful.

Wed, Apr 11
ORD
OPO
16h 45m
Tue, Apr 17
OPO
ORD
33h 45m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 29
ORD
OPO
14h 50m
Wed, Jun 6
OPO
ORD
37h 30m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Nov 29
ORD
OPO
17h 50m
Wed, Dec 13
OPO
ORD
16h 38m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Dec 12
ORD
OPO
33h 05m
Tue, Dec 26
OPO
ORD
48h 20m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.