Trinity Airways (formerly T’way Air)

Trinity Airways is the new name of T’way Air, a Korean low-cost airline flying from Seoul, Daegu and Jeju to Japan, Southeast Asia, Australia and Europe. Cabin bags are usually up to 10 kg, short-haul fares usually include 15 kg of checked baggage, and power banks cannot be used on board. This guide covers the new name, the Korean power bank ban, long-haul flights and how it compares with its Korean rivals.

Founded in 2010, the airline was bought by the Sono International hospitality group and renamed Trinity Airways on 10 September 2026. It flies Boeing 737s and Airbus A330s.

Power Bank Rules on Trinity Airways

All South Korean airlines now ban the use of power banks on board:

• You cannot charge devices from a power bank or charge the power bank itself during the flight.
• Keep power banks within reach, not in the overhead bins, with the terminals taped or in a plastic bag.
• Power banks must be in cabin baggage; up to 100 Wh needs no approval and 100–160 Wh needs approval.

Check-In in Seoul

Online check-in is available on the website and app. At Incheon, counters close 50 minutes before international flights, so arrive at least two hours early, or three hours for long-haul flights.

Families and Special Assistance

Infants under two travel on an adult’s lap. Request wheelchairs and other special assistance at least 48 hours before the flight.

What the New Name Means

What the new name means for travellers:

• Flight numbers still start with TW, and old bookings remain valid.
• Aircraft are being repainted in the new livery.
• The airline took over several European routes from Korean Air, including Paris, Rome and Barcelona.

How to Find Cheap Trinity Airways Flights

• Compare long-haul fares to Europe with full-service airlines.
• Watch for promotional sales.
• Avoid Chuseok and Lunar New Year.
• Fly from Daegu for some Asian routes.
• Compare airlines: use the FlightSelects flight search to see its fares next to Jin Air, Jeju Air and others.

Trinity Airways vs Jin Air vs Jeju Air

Three Korean low-cost airlines.

See our Jin Air guide and Jeju Air guide to compare.

Arriving in Seoul

Incheon International Airport is about 50 km west of Seoul. The AREX train reaches Seoul Station in about 45 minutes, and airport limousine buses serve major hotels.

You can also book an airport transfer in advance at a fixed price.

Is Trinity Airways a Good Airline?

Yes, for value. It offers low fares in Asia and rare low-cost long-haul flights to Europe and Australia, though extras add to the price.

For more options, see our airline guides and the FlightSelects travel blog.

Facts checked in October 2026 against Travel Extra on the rebrand and Your Mileage May Vary on power bank bans. Rules change, so check the official website before you travel.