Andy Wang, a young office employee working in Shanghai, recently booked flights from Shanghai to South Korea's Jeju island for the upcoming Spring Festival holiday. The round-trip airfare cost him a little over 2,000 yuan ($274), half the price for round-trip flights from Shanghai to popular domestic destinations such as Harbin in Northeast China's Heilongjiang province.

Going on a trip to celebrate the holiday, which starts in late January, has become a new trend among Chinese consumers, and many like Wang have found that some overseas destinations offer better value for money compared with domestic ones. For example, it is cheaper to book flights to Bangkok, Thailand, than to Sanya, Hainan province, during the break.

Spring Festival bookings for outbound flights and international hotels this year have already more than doubled compared with the same period last year, according to Qunar, a Beijing-based online travel agency.

International airfares for the eight-day holiday have on average dropped 12 percent year-on-year, while airfares for some popular destinations such as Tokyo in Japan, Cairo in Egypt and Ho Chi Minh City in Vietnam have on average dropped 20 percent year-on-year, data from Qunar showed.

For some niche destinations in countries such as India, South Africa, Saudi Arabia, Mexico and Argentina, hotel rates for the Spring Festival holiday have on average plummeted by over 40 percent year-on-year, the online travel agency found.

"Spring Festival is the most important traditional festival in China, and Chinese people tend to go home for family reunions or take short trips within the country. Therefore, major domestic destinations, especially those popular for winter tourism, witness a surge in prices during the holiday," said Cai Muzi, a researcher for Qunar.

As most foreign countries neither have the tradition of celebrating Spring Festival, nor do they have public holiday during the time, the travel rush is relatively low, Cai said.

"With fewer number of tourists, the price fluctuations are not significant overseas, which makes outbound travel to some places cheaper than domestic tourism," she added.

According to Qunar, Chinese users of the online platform have booked flights to more than 1,300 cities in 96 countries for the Spring Festival break.

Some overseas destinations that have recorded higher growth in terms of flight booking volume include Siem Reap in Cambodia, Nagoya and Sapporo in Japan, Budapest in Hungary and Hanoi in Vietnam. Flight bookings to these places have more than tripled year-on-year, Qunar said.

To cash in on this holiday travel trend, a number of domestic carriers have increased their capacities on multiple international routes.

In mid-December, China Southern Airlines increased the frequency of its flight between Guangzhou, Guangdong province, and Phuket, Thailand, raising the number from seven round-trips per week to 14. The carrier has also increased the frequency of its flights connecting Guangzhou to Chiang Mai in Thailand and Sabah in Malaysia.

China Southern has announced that starting in January, it will resume its flights from Zhengzhou, Henan province, to Bangkok; from Shenyang, Liaoning province, to Bangkok; and from Changsha, Hunan province, to Singapore.

A recent trend report by Singapore-based budget carrier Scoot said that Singapore, Malaysia and Thailand have become popular destinations for Chinese travelers, partly due to their visa-free entry policies and proximity to China, with many people buying tickets just one week in advance.