Question : How long do most people visit Sofia?
Answer : Of course you're not most people, but if you were, you'd stay roughly 42 days.
Question : Over the coming months, which airline is getting their passengers to Sofia Airport (SOF) round-trip the cheapest?
Answer : Delta Air Lines is your best bet for finding that coveted low fare. They're offering fares as low as $723, while prices for other flights are as high as $972.
Question : How much should a trip from Chicago (MDW) to Sofia (SOF) cost?
Answer : Flight prices are fluctuating less for this route than the majority of routes from the United States, as they're ranging from $723 to $972. However, the sooner you book, the better price you tend to get.