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STL (St. Louis) to OPO (Porto) Flights $1,115.26

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Here are your best fares found in the past 7 days

The lowest fare found for this route is $1213.96 on Wed, Sep 13 from STL to OPO
Flights Fare Calendar Find minimum fare between origin STL and destination OPO Click this button to get previous 30 days data Click this button to get next 30 days data $3307 $2834 $2362 $1889 $1417 $944 $472 $0 Jun Jul 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W Price is $ 2834.76 on Iberia Price is $ 2834.76 on Iberia Price is $ 1936.26 on Iberia Price is $ 1836.36 on Iberia Price is $ 1824.96 on Iberia Price is $ 1748.96 on Iberia Price is $ 1628.26 on Iberia Price is $ 1581.96 on Lufthansa Price is $ 1577.96 on Iberia Price is $ 1479.76 on Air Canada Price is $ 1262.56 on British Airways Price is $ 1213.96 on Iberia

Cheap STL to OPO Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from St. Louis to Porto (STL to OPO)

Question : Who's offering the cheapest round-trip flight to Porto Airport (OPO) over the coming months?
Answer : Delta Air Lines is your best bet for finding that coveted low fare. They're offering fares as low as $780, while prices for other flights are as high as $3,517.

Question : How long do most people visit Porto?
Answer : Of course you're not most people, but if you were, you'd stay roughly nine days.

Question : Would you be willing to change your travel days if it saved you money?
Answer : Saturday is your lowest-cost day to fly in July. Having flexibility in your travel plans means you can save more, so be sure to plan ahead when possible.

Question : What price range should you expect when booking from Saint Louis (STL) to Porto (OPO)?
Answer : Prices for this trip tend to change more than other flights from the United States. They can vary from $780 to $3,517. Prices tend to be lower the further out you book.

Question : What day in the next four weeks has the best fares?
Answer : As of Jun 19th, the cheapest day to fly from Saint Louis to Porto is Jun 22nd. Tickets are currently being sold for $1,287, which is 52% below the average price for this route.