Quick summary: The KTX SRT merger takes effect on September 1, 2026, combining Korea’s two high-speed rail operators — KTX (run by Korail) and SRT (run by SR) — into a single system under the KTX brand. Former SRT trains will now be called KTX-Sancheon, and KTX fares are being cut by an average of about 10% to match SRT’s cheaper pricing. For travelers, this means lower fares, one unified booking experience, and expanded loyalty benefits.
If you’ve ever researched train travel in South Korea, you’ve probably run into a confusing question: “Should I book KTX or SRT?” Until now, these were two separate companies running on the same high-speed tracks, with different apps, different fares, and different discount rules. That confusion ends on September 1, 2026, when the two systems merge into one.
This guide breaks down exactly what’s changing, how much cheaper tickets will be, and what it means if you’re planning a trip to Korea.
Table of Contents
- Why Are KTX and SRT Merging?
- What’s Changing for Ticket Prices
- Mileage Points Now Available on More Routes
- Transfer Discounts Expanded
- More Seats, Better Availability
- What This Means If You’re Visiting Korea
- FAQ
1. Why Are KTX and SRT Merging?
Even though KTX and SRT trains run on the exact same high-speed lines (like the Gyeongbu Line connecting Seoul and Busan), they’ve been operated by two separate companies: Korail, the state railway operator, and SR, a company that launched SRT service out of Suseo Station in southern Seoul in 2016.
Having two operators meant two separate booking apps, two different fare-calculation methods, and two different membership/mileage programs — which was often confusing, especially for first-time visitors trying to figure out which company to book with.
From September 1, 2026, Korail is folding SRT into KTX operations as part of the KTX SRT merger. The former SRT rolling stock will run under the name KTX-Sancheon, and the two companies’ booking systems and membership benefits are being merged into one.
2. What’s Changing for Ticket Prices
This is the part travelers care about most. Historically, KTX fares were about 10% more expensive than SRT fares for the same route. As part of the merger, the government and Korail have agreed to bring KTX fares down to SRT’s cheaper pricing structure for at least the first three years after the merger.
Here’s how it looks on two of the most popular routes:
| Route | Old KTX Fare | New Fare (from Sept 1, 2026) | Savings |
|---|---|---|---|
| Seoul ↔ Busan | ₩59,800 | ₩54,400 | ₩5,400 cheaper |
| Yongsan ↔ Gwangju-Songjeong | ₩46,800 | ₩42,000 | ₩4,800 cheaper |
For a round trip between Seoul and Busan, that’s roughly ₩10,800 (about USD $8) saved per traveler — not huge on its own, but it adds up for families or longer stays with multiple train legs.
Keep in mind: the discount isn’t a flat 10% on every single route. The exact new fare depends on the departure and arrival stations, and routes with more intermediate stops get additional fare adjustments. If you’re booking a specific route, it’s worth double-checking the fare on Korail’s official site closer to your travel date.
💡 Why are people calling this “prices from 20 years ago”? Korean media has framed the Seoul–Busan fare cut as a return to price levels last seen roughly two decades ago, when KTX first launched. Factoring in inflation since then, the real-terms savings are actually even larger than the sticker price suggests.
3. Mileage Points Now Available on More Routes
If you’ve traveled on SRT before, you may not know that SRT never had an ongoing mileage/points program the way KTX did. Under the old system, KTX passengers earned back 5% of their fare as Korail mileage points — but SRT passengers (departing from Suseo Station) got nothing.
After the merger, that changes: all high-speed trains departing from or arriving at Suseo Station now earn the same 5% mileage back as any other KTX route.
Those mileage points can be used toward future train tickets, cancellation fee waivers, and even purchases at convenience stores and cafes inside train stations — useful to know if you’re doing a multi-city Korea itinerary and racking up several train tickets.
4. Transfer Discounts Expanded
Previously, if you were connecting from an SRT high-speed train to a regular (non-high-speed) train, you didn’t get any transfer discount. Starting with the merger, passengers connecting through former SRT routes can now get a 30% discount on the connecting regular train fare — the same benefit KTX passengers already had.
Discount programs for youth, pregnant travelers, large families, and low-income riders have also been unified under Korail’s (previously more generous) standards across both networks.
5. More Seats, Better Availability
Beyond pricing, the merger is also increasing overall seat supply. Combining the two networks’ scheduling is expected to add roughly 15,000+ additional seats per weekday across the system, along with more standing-room capacity during rush-hour commuter times to ease overcrowding.
Quick recap of what’s changing:
- ✅ KTX fares cut by an average of ~10%, matched to former SRT pricing
- ✅ 5% mileage points now earned on Suseo-departing/arriving trains too
- ✅ 30% transfer discount extended to former SRT routes
- ✅ Youth, pregnancy, large-family, and low-income discounts unified under Korail’s standards
- ✅ Roughly 15,000 more seats added per weekday
- ✅ Online flash-sale fares extended to former SRT routes
6. What This Means If You’re Visiting Korea
If you’re planning a trip that includes Seoul, Busan, Gwangju, Daegu, or other cities along the high-speed rail network, here’s the practical takeaway:
- You no longer need to compare KTX vs. SRT — after September 1, 2026, there’s just one system to book through.
- Fares will generally be a bit cheaper than what you may have seen quoted for KTX in the past, especially on the popular Seoul–Busan route.
- Booking apps and sites may be in transition around the launch date, so if you’re traveling right around September 1, 2026, it’s worth checking Korail’s official English site or app for the latest booking interface before you go.
- If you already have an existing SRT membership or points, watch for official transition announcements about how account merging works — this is more relevant for residents than short-term visitors, but worth knowing if you travel to Korea frequently.
7. FAQ
Is SRT completely gone now? Operationally, yes — SRT as a separate brand is being absorbed into KTX. The former SRT trains continue running, just rebranded as KTX-Sancheon.
Do I need a different booking app now? Since the two companies’ booking and membership systems are being unified, you should be able to book all high-speed routes — including former SRT routes — through Korail’s standard booking channels going forward. Check the official site for the latest details around your travel dates.
Are fares 10% cheaper on every route? Not exactly. The average reduction is about 10%, but the actual new fare varies by route depending on departure/arrival stations and the number of stops.
When exactly does this take effect? September 1, 2026.
Does this affect the KTX Korea Rail Pass or foreign-visitor passes? The merger itself is about fare structure and operations, not visitor rail passes specifically — but since pass pricing and terms are separate from standard fares, it’s worth checking Korail’s official English pages for the latest pass terms if you’re planning to use one.
Final Thoughts
This isn’t just a rebranding exercise — it’s a genuine simplification of Korea’s high-speed rail system that had, for a decade, split fares, loyalty points, and discount rules across two competing operators. For travelers, the upshot is simple: one system, generally lower fares, and no more guessing which company to book with.
If you have upcoming travel plans along the Seoul–Busan corridor or other high-speed routes in Korea, it’s worth checking the updated fares before you book — and enjoy the ride.
This article is based on Korean-language news coverage and press releases published as of September 2026. Fares and policies are subject to change based on Korail’s official announcements — please confirm the latest details on Korail’s official website before booking.