About RS
RS is Air Seoul, a South Korean low-cost carrier operating out of Incheon International (ICN) as its main base. It's a regional-focused airline with a tight network — 20 non-stop routes spread across 12 airports, totaling just over 31,000 km of coverage. The route map tells you everything about what this airline is: it exists primarily to connect Korea with nearby Asian destinations, particularly Japan, Vietnam, and a handful of other short-to-medium haul spots. Nine of its routes radiate straight out of ICN, which makes Seoul the obvious place to build any itinerary around Air Seoul.
Why fly RS?
Honestly, the main reason most travelers end up on Air Seoul is route convenience rather than brand loyalty. If you're moving between Seoul and smaller Japanese airports like Yonago (YGJ) — which most major carriers ignore — Air Seoul is often your only realistic non-stop option. That's genuinely valuable. The CXR-ICN route at 3,309 km is the longest in the network and covers Nha Trang to Seoul directly, which saves you a connection through a busier hub. For budget-conscious nomads doing the Korea-Japan-Vietnam triangle, this airline fills gaps that bigger low-costs don't bother with. Fares tend to be competitive on these thinner routes precisely because competition is limited.
RS hub airports
- ICN Seoul — 9 RS routes from Republic of Korea
- CXR Nha Trang — 1 RS routes from Viet Nam
- NRT Tokyo — 1 RS routes from Japan
- YGJ Yonago — 1 RS routes from Japan
- DAD Da Nang — 1 RS routes from Viet Nam
Top destination countries on RS
- Republic of Korea — 11 RS routes
- Japan — 5 RS routes
- Viet Nam — 2 RS routes
- China — 1 RS routes
- Guam — 1 RS routes
Tips for booking RS
Book early if you're eyeing the Yonago or Nha Trang routes — seats on thinner routes fill faster than you'd expect. ICN is the network's backbone, so if you're connecting onward, build your schedule around it. Baggage allowances on low-cost Korean carriers are typically carry-on only at base fares, so check exactly what's included before you click confirm — add-on baggage fees can quietly inflate a cheap ticket. Air Seoul operates as an affiliate of Asiana Airlines, so it's worth checking whether any Asiana membership perks apply to your booking. Don't assume they do automatically — read the fine print first.
Frequently asked questions about RS
Where does RS fly?
RS operates 20 routes primarily serving East and Southeast Asia, with a focus on the Republic of Korea, Japan, and Vietnam. The airline connects major cities across these regions, making it ideal for travel within East Asia.
What is RS's main hub airport?
RS's primary hub is Incheon International Airport (ICN) in Seoul, South Korea. This central location serves as the main connection point for the airline's regional network.
Is RS a legacy carrier, low-cost carrier, or regional airline?
Based on its network of 20 routes focused on East and Southeast Asia, RS operates as a regional carrier serving key markets in the region. The airline provides regional connectivity with a concentrated route network rather than global coverage.
When should I book RS flights and what fare classes are available?
For the best fares on RS regional routes, booking 4-6 weeks in advance is typically recommended. The airline likely offers standard economy fare classes with options for additional services depending on your booking.
What are RS's baggage and check-in policies?
Specific baggage allowances and check-in procedures vary by fare class and route; we recommend checking RS's official website or contacting the airline directly for current policies. Typically, regional carriers allow one carry-on bag plus a personal item, with checked baggage fees varying by ticket type.