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.