If they’re not the cheapest option, try searching by month to compare costs throughout the week.
When you fly 7753 km from Glasgow to Lanzhou, you can choose from zero airlines. Flights are most expensive during high season, and you can expect accommodation prices to be higher then too. Last-minute deals do crop up, but it's best to book in advance to avoid disappointment.
If you're fairly flexible about when you want to fly to Lanzhou, searching by month will show you the cheapest times to go.
Once you've selected your flight, you'll need to fill out your details to book. And don’t forget to look at Netflights’ hotels and car hire – you could save even more money on your trip when you book everything in one go.