Question : How many days should you spend in Porto if you're flying in from Detroit?
Answer : The average time spent in Porto by passengers flying from DTW is 17 days.
Question : Will you do what it takes to get the absolute lowest-cost flight?
Answer : In December, Wednesday is your cheapest day to fly. Flexibility is paramount when booking travel plans in order to keep costs down.
Question : Are prices changing frequently for this route?
Answer : Flight prices for DTW to OPO change a lot more than the majority of routes. Remember, the sooner you book, the more you're able to save.