Recommendation Summary
The most efficient way to travel from Santiago de Compostela, Spain to Midville, United Kingdom is by air, followed by a train from London to Midville. This journey will take approximately 8 hours and 15 minutes in total, covering a distance of about 1,650 miles (2,655 km).
To begin your trip, fly with either Air Europa or British Airways from Santiago de Compostela Airport (SCQ) to London Heathrow (LHR). After arriving in London, you can transfer to the train station where you can take a direct train via East Midlands Railway or Great Northern to reach Midville. In terms of costs, you can expect a total of around $930 CAD for the flight and train combined, depending on how early you book your tickets.