Trinity Airways vs SUM Air

Install the Trinity Airways mobile app for faster flight booking and reservation management. Trinity Airways is a proud national airline of the Republic of Korea. ■ Fast and Convenient Flight Booking and Reservation Management - Flight booking and payment - View and manage flight reservations - Online check-in for domestic and international flights ■ Find and Compare the Lowest Fares at a Glance - Check the lowest fares by date for your desired route using the Low Fare Calendar and plan your trip at a more affordable price. ■ Easy and Convenient Payment Options - Supports various payment methods, including Naver Pay, Kakao Pay, WeChat Pay, Toss Pay, PayPal, UnionPay, and Alipay. ■ Wide Range of Ancillary Services Available for Pre-purchase - Enjoy various ancillary services at up to 40% off when purchased online in advance. - Advance Seat Selection : Choose your preferred seat in advance and enjoy a more comfortable journey. - In-flight Meal Pre-order : Pre-order a variety of in-flight meals and enjoy them conveniently during your flight. - Checked Baggage : Pre-purchase the amount of baggage you need and travel with greater convenience. - Ancillary Service Bundles : Enjoy extra baggage, advance seat selection, and in-flight meal pre-order services at a more affordable price than purchasing each service separately. ■ 14 Payment Currencies and 7 Languages Supported - 14 payment currencies : KRW, USD, CAD, JPY, CNY, TWD, THB, VND, EUR, MOP, HKD, MYR, AUD, IDR - 7 languages : Korean, English, Japanese, Simplified Chinese, Traditional Chinese, Thai, Vietnamese [Optional Access Permissions] - Camera Access : Passport recognition, inquiry photo attachment - Notifications : Receive push notifications for service and marketing information - Biometric Authentication Information (Touch ID, Face ID) : Log in to use the service ※ Optional access permissions are required when using the corresponding features. Even if you do not grant these permissions, you can still use other services except for the features requiring the corresponding permissions. ※ Optional access permissions can be changed or revoked at any time through your device settings.

Fly Light and Easy with SUM Air! From flight bookings to mobile boarding passes and simple payments—start your journey faster and lighter with the SUM Air App. Experience a new way of flying that connects every corner of Korea. [Key Services] Flight Booking & Management - Real-time Booking: Check seat availability for the Gimpo-Sacheon route and book instantly. - Manage Your Trip: View your booking history or process cancellations easily within the app. - Flight Status: Access real-time flight schedules and arrival/departure information. Fast & Convenient Boarding - Web Check-in & Mobile Boarding Pass: Skip the airport counter lines. Check in via the app and board immediately with your mobile pass. - Additional Services: Select your preferred seat or purchase extra baggage allowance with just one click. Simple Payment & Login - SUM Air PAY: Support for our dedicated SUM Air PAY, as well as Kakao Pay, Naver Pay, and Toss Pay. - 3-Second Login: Sign up instantly using your Kakao, Naver, or Google accounts. App-Exclusive Benefits - Special Promotions: Be the first to access ultra-low fares available only to app users. - Real-time Push Notifications: Get instant updates on booking status, check-in reminders, and weather-related flight changes. [A Special Journey with SUM Air] - Business Success: The fastest way to travel between the Seoul Metropolitan Area and Gyeongnam for your busy schedule. - Start Your Adventure: Arrive comfortably at Sacheon Airport, the gateway to the beautiful South Coast. - A Lifeline for Locals: Experience a premium transportation service that is faster and more comfortable than the KTX. [Access Permissions] SUM Air only requests the minimum permissions necessary to provide our services. - (Optional) Notifications: Used for booking confirmations, check-in reminders, flight status, and promotional benefits. [Customer Support] - Website: https://www.sumair.kr - Reservation Center: 1877-4325 (09:00 - 18:00)