

Trinity Airways (TW) fleet and travel rules
Trinity Airways is a South Korean hybrid airline based in Seoul, operating scheduled domestic, regional, and long‑haul flights from hubs at Incheon, Gimpo, and Daegu. It was founded in 2003 as Hansung Airlines, relaunched in 2010 as T'way Air, and officially rebranded to Trinity Airways on September 10, 2026, after being acquired by leisure conglomerate Sono Trinity Group. The name reflects the group’s strategy to integrate air travel with its hotel and tourism businesses. Trinity operates a mixed fleet of narrow‑body and wide‑body aircraft, serving destinations across Asia, Europe, North America, and Oceania, and is positioning itself between traditional low‑cost carriers and South Korea’s full‑service flag carriers.
The founders of seatmaps.com have created and assembled an exhaustive database of seatmaps of all the aircrafts that T'way Air operates. Click on the links below to see our entire array of seatmaps.
Fleet
Airbus
- Airbus A330-2002 types
Airbus A330-3001 type
Boeing
Boeing 737 MAX 81 type
Boeing 737-8001 type
- Boeing 777-300ER2 types
Check in rules
Trinity Airways online check-in is available from 24 hours to 35 minutes before departure for domestic flights and from 24 hours to 1 hour before departure for eligible international flights. Baggage check generally opens 2–3 hours before departure, depending on the airport. Online check-in availability is limited on some international routes, and passengers unable to check in online should use an airport counter or self-service kiosk.
Trinity Airways Check-in rulesBaggage
Trinity Airways allows 1 carry-on bag plus 1 personal item, with a combined weight of up to 10 kg (22 lb) on Regular, Smart, and Event fares. Business fares allow 2 carry-on bags up to 10 kg (22 lb) each. Carry-on bags may measure up to 55 × 40 × 20 cm (21.7 × 15.7 × 7.9 in), while personal items are limited to 40 × 30 × 15 cm (15.7 × 11.8 × 5.9 in).
Trinity Airways Baggage rulesUnaccompanied minors
Trinity Airways offers UM service for children aged 5–12 on domestic flights and 5 to under 12 on international flights traveling alone. On international flights, the service is also available for passengers aged 12 to under 18 for an additional fee. The service is available on most routes but Russia
Unaccompanied minors in Trinity AirwaysInfants
Trinity Airways requires infants to be booked together with an accompanying adult aged 18 or older when reservations are made online or through the mobile app.
Trinity Airways Infants policyPets
Trinity Airways allows dogs, cats, and birds over 8 weeks old to travel in the cabin. The pet and carrier must weigh 9 kg (19.8 lb) or less, with one pet per adult passenger. Pets are not accepted as checked baggage or in Business Class, and passengers traveling with pets must check in at the airport counter.
Flying with pets on Trinity Airways
More airline seat maps
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