The decision to increase air services was announced following the signing of a Memorandum of Understanding (MoU) between India and South Korea, a civil aviation ministry release said.
"Apart from Tokyo and Los Angeles, two additional beyond points of call --Seattle and Vancouver -- have been granted for Indian carriers. This means that the Indian carriers can mount air services to these destinations via Korea so that the operations could become more economical," the release said.
Besides, both India and South Korea agreed to allow domestic code-share to any four points in their respective countries, it said.
The two sides had been negotiating a deal to boost connectivity since 2012.
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"The signing of the MoU comes against the backdrop of two rounds of inconclusive talks in December, 2012 in New Delhi and October 2014 in Seoul, as the two sides could not come to an agreement on various issues including number of frequencies to be increased and the quantum of fifth freedom rights on intermediate points," the release said.
"For fifth freedom for beyond points India succeeded in keeping the ratio at more than 50 per cent (10 out of 19 frequencies) which was earlier only 50 per cent of traffic rights," the release said.
The 5th freedom rights, allows carriers of the two countries to carry passengers to a third country.