Cheap flights from Chicago to Porto from $0
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Discover deals on Chicago to Porto flights
Typical range $0–$0•Cheapest found $0
Checking latest prices...Find cheap flights from Chicago to Porto
Best
2 stops
9 Feb
DEP
20:45
ORD
2×
20:00
OPO
17h 15m
9 Feb
DEPARTURE
20:45 - 20:00
17h 15m
ORD
2 stops
OPO
2 stops
9 Feb
DEP
20:45
ORD
2×
20:00
OPO
17h 15m
9 Feb
DEPARTURE
20:45 - 20:00
17h 15m
ORD
2 stops
OPO
British Airways flights from Chicago to Porto
Our best British Airways deals on Chicago to Porto tickets
Best
1 stop
9 Feb
DEP
21:45
ORD
1×
17:35
OPO
13h 50m
9 Feb
DEPARTURE
21:45 - 17:35
13h 50m
ORD
1 stop
OPO
1 stop
9 Feb
DEP
20:45
ORD
1×
17:35
OPO
14h 50m
9 Feb
DEPARTURE
20:45 - 17:35
14h 50m
ORD
1 stop
OPO
American Airlines flights from Chicago to Porto
Our best American Airlines deals on Chicago to Porto tickets
Best
2 stops
9 Feb
DEP
08:45
ORD
2×
07:40
OPO
16h 55m
9 Feb
DEPARTURE
08:45 - 07:40
16h 55m
ORD
2 stops
OPO
2 stops
9 Feb
DEP
08:45
ORD
2×
07:40
OPO
16h 55m
9 Feb
DEPARTURE
08:45 - 07:40
16h 55m
ORD
2 stops
OPO
Iberia flights from Chicago to Porto
Our best Iberia deals on Chicago to Porto tickets
Best
2 stops
9 Feb
DEP
20:45
ORD
2×
20:00
OPO
17h 15m
9 Feb
DEPARTURE
20:45 - 20:00
17h 15m
ORD
2 stops
OPO
2 stops
9 Feb
DEP
20:45
ORD
2×
20:00
OPO
17h 15m
9 Feb
DEPARTURE
20:45 - 20:00
17h 15m
ORD
2 stops
OPO
What's the cheapest day of the week to fly from Chicago to Porto?
If your flying dates are flexible, you should consider flying to Porto on a Thu, as we generally find the cheapest rates on that day. On the other hand, Sat is the most expensive day to fly.
What is the cheapest month to fly from Chicago to Porto?
The cheapest month for flights from Chicago to Porto is Sep, where tickets cost $707 on average. The most expensive months are Jul.
JanFebMarAprMayJunJulAugSepOctNovDec
$1020$864$707
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Everything you should know
Cheapest one-way flight
$755
Typical prices: $755–$1055
When to book
6 weeks
in advance to save around 35%
Good to know
💰
Save money
Compare prices across airlines to find the best deal. Prices can vary significantly.
📅
Be flexible
Flying midweek or in off-peak seasons can save you up to 30% on airfare.
⏰
Book early
Booking 6+ weeks in advance typically offers the best prices.
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Frequently asked questions
The cheapest flight from Chicago to Porto currently costs AUD $755. Prices typically range from $755 to $1055. Prices change frequently, so we recommend booking early and being flexible with your travel dates.