While it is not a must to reconfirm a flight, DeNA TRAVEL highly recommends that you reconfirm your flight on the airline official website or by calling the airline. Reconfirming your flight helps avoid last minute surprises when the flight is delayed or cancelled.
Please note that some airline companies do not display reservations made through a travel agency on their website. In case of such situation, a phone call will be required.
When contacting the airline, you might need to provide the airline reservation number, which can be found on your e-ticket. Your e-ticket can be downloaded from the page "MY BOOKING" of DeNA TRAVEL's website.
For more details, please refer to the following article: