1. Airlines Known for Budget Flights to China:

• CheapOair – a budget-friendly tool for flights, hotels and car rentals 
• Trip.com – an online travel agency that offers affordable flight and hotel bookings.

2. Booking Tips:

• Book in Advance: Flights are generally cheaper when booked several months in advance. Try to book at least 3-4 months ahead of your planned travel date.
• Flexible Dates: If you’re flexible with your travel dates, use tools like Google Flights, Skyscanner, or Kayak to see if flying a day earlier or later could save you money.
• Layovers: Consider flights with layovers, as they are usually cheaper than direct flights. However, ensure the layover duration is reasonable.
• Travel During Off-Peak Seasons: Avoid traveling during Chinese New Year (late January to February) or Golden Week (first week of October) when flight prices can be significantly higher.