If they’re not the cheapest option, try searching by month to compare costs throughout the week.
When you fly from Southampton to Sofia, you'll have zero airlines to choose from for your 2084 km journey. If you're planning to fly in peak season, make sure you book in advance to get a reasonable price. Or you could hold on and try to get a last-minute bargain.
To find the best price, try searching by month. Or, if you want to bag a last-minute offer, keep an eye on Netflights to monitor the prices.
Once you’ve chosen your flight, go through and fill out your details to complete your booking. If you haven’t yet sorted your accommodation or car hire, take a look at our competitive rates – then you can book your flights and accommodation in one go.