Question : How long are most people's visits to Dallas when they fly in from Porto?
Answer : The average time spent in Dallas by passengers flying from OPO is eight days.
Question : Can you cut down on flight costs by changing the day of the week you travel to Dallas?
Answer : Monday is your lowest-cost day to fly in February. Flexibility is paramount when booking travel plans in order to keep costs down.
Question : Are prices changing frequently for this route?
Answer : Prices are fluctuating a lot more for this route than most routes. The further out you book a route, the more likely you are to save.