What to Book in Advance in Seoul (And What Can Wait)

When we started planning our first Seoul trip, we assumed we'd need to reserve everything weeks in advance. As it turns out, that's not really how Seoul works.

Compared to cities like London, Tokyo or New York, Seoul is surprisingly relaxed when it comes to booking attractions. Most museums, palaces, and major sights can be visited on the day without any planning at all.

But there are a few important exceptions, and missing them is painful.

On one trip, we missed out on tickets for the Secret Garden at Changdeokgung Palace because we didn't realise how quickly they sell out. On another, we waited too long to book a DMZ tour that included a North Korean defector Q&A and couldn't get a spot. Both were entirely avoidable.

We've been to Seoul four times now, so we've had plenty of chances to learn what actually needs planning and what doesn't. 

This post covers exactly what to book in advance in Seoul and how far ahead, including the one experience we'd never leave to chance (the DMZ), and a few things that you can safely ignore until you arrive.

Quick booking cheat-sheet

Here's a quick overview of the most in-demand Seoul experiences and how far ahead we'd book them. Use it to map out your Seoul itinerary so you don't miss anything time-sensitive.

* Peak season = March-April (cherry blossom), October-November (autumn foliage), and Korean public holidays (including Chuseok and Lunar New Year)

Doing multiple paid attractions? Check whether the Discover Seoul Pass or Klook Pass Seoul works out cheaper for your itinerary. They often do. The passes cover entry costs, though you'll still need to reserve time slots for some activities.

Must-book Seoul experiences

Compared to other big cities like Tokyo or London, Seoul feels a lot more laid-back when it comes to pre-booking tickets.

But there are a few popular experiences where door entry is simply not possible, or where slots sell out fast… and if you miss them, there’s no alternative. 

These are the attractions and places you need to prebook in Seoul:

1. DMZ tour

If there is ONE thing to pre-book before anything else in Seoul, it's a DMZ tour. The DMZ is a 250-km (155-mile) buffer zone dividing North and South Korea, created after the Korean War armistice in 1953.

We did this exact DMZ tour with the live defector Q&A, and it was one of the most memorable things we've done in South Korea.

No museum can replicate seeing that border with your own eyes, or hearing from a North Korean defector firsthand. Our full DMZ tour review covers exactly what to expect and tips for visiting.

Why book ahead: You can't enter the DMZ independently, daily numbers are capped, and the defector sessions sell out fast. Weekend departures and peak seasons like cherry blossom and autumn foliage go quickest.

👉 Out of everything we did in Seoul, the DMZ left the biggest impression.

2. Changdeokgung Secret Garden tour

Changdeokgung Palace is our favourite out of Seoul's five royal palaces. It's smaller than Gyeongbokgung (which is the largest of them), but we think it's even more beautiful.

And the Secret Garden is the highlight you genuinely should not miss.

You can only visit with a guided tour, and capacity is strictly limited to 100 people per slot.

We've missed out on this on our first trip because we weren't aware how scarce the tickets are. But we were lucky to see it on a later trip… the additional ₩5,000 (about £3, US$3, or €3) for the Secret Garden tour is so worth it!

Online reservations open at 10am Korea time, six days before your visit. Book your ticket directly through the official Changdeokgung Palace website.

Why book ahead: Slots are restricted and English-language tours are the most popular. They often sell out within hours of opening, and same-day walk-in tickets are rarely available outside the off-season.

3. KTX train tickets

KTX train tickets are among the most overlooked items to pre-buy in Seoul. The high-speed KTX trains are super fast and punctual, and they connect Seoul to the rest of the country without needing a rental car.

We've taken it a few times now and always book in advance.

We booked our KTX tickets through trip.com, which is Korail's exclusive overseas distributor. The official Korail site has a well-documented problem with foreign credit cards… ours failed multiple times.

When we then bought our tickets via trip.com, the process was super easy, and seat selection was included.

Why book ahead: The Seoul ↔ Busan route is Korea's busiest by far, and weekend tickets for fast trains and good time slots can sell out 2-3 weeks ahead. On other routes, you can usually book last-minute.

👉 Book tickets for the fastest and most comfortable way to get around South Korea

4. Nanta show

Nanta is probably the most distinctive live performance you can see in South Korea, and one of the few that needs zero Korean language skills to follow.

Here's a trailer:

There are venues in Myeongdong and Hongdae, so you can slot it into whichever area you're already spending the evening.

Why book ahead: Evening and weekend performances sell out regularly, last-minute availability often means poor sightlines or premium-only seats, and booking Nanta show tickets online is usually cheaper than paying at the door.

5. Nami Island tour (with Rail Bike)

Nami Island is one of the most popular day trips from Seoul, about 1.5 hours from the city. It was one of our favourite days out from Korea’s capital city. 

The tree-lined paths and open green space on Nami Island feel nothing like Seoul. The trip is best in autumn, when the foliage turns and the whole island looks like a painting. But it looks beautiful any time of the year.

You can visit independently, but we'd strongly recommend going as part of an organised tour.

We booked this Nami Island and Rail Bike tour. You get the Rail Bike, Alpaca World, the Garden of Morning Calm and other stops in a single day (depending on the package you choose), with transport sorted and nothing to piece together yourself. 

The Gangchon Rail Bikes were our FAVOURITE activity. You ride along an old railway line and pass through themed tunnels along the way (with disco lights, bubbles and more). It's so much fun, and completely unexpected. 

Why book ahead: The day trip to the island rarely sells out, but the combo tours with the Rail Bike often do. These slots are much more limited. Multiple tours bundle them together because they’re the hardest part to arrange last minute.

👉 Rail Bike slots are the first to sell out. This is the Nami Island tour we'd book again.

6. K-beauty and wellness appointments

South Korea (and Seoul specifically) is THE mecca of beauty treatments. We actually know people who fly there specifically for skin treatments.

K-beauty and wellness treatments are one of the things where pre-booking matters more than you might expect, thanks to K-pop idols, K-dramas, and K-beauty products.

Personal colour analysis and premium scalp treatments are in particularly high demand and can book out 1-3 months in advance.

Clinical treatments like skin boosters and laser are more flexible, but we'd still recommend booking as soon as your travel dates are confirmed.

Because most local providers require a Korean phone number for direct booking, we found that Klook is the easiest option for international visitors.

If you don't know where to begin, this personal colour analysis or this treatment at Hui & Whoo Spa is a great starting point… they're both among the most-booked K-beauty experiences on Klook.

Why book ahead: English-speaking providers for treatments where you need to communicate are limited, and premium treatments generally book out 1 to 3 months in advance. Walk-ins are almost never available.

Most restaurants you can walk into without any planning.

But Michelin-starred spots, high-end Korean BBQ, and the trendier places in Seongsu and Hongdae (and sometimes even Ikseon-dong) often require reservations, sometimes 1-2 months ahead. 

Some of the most famous places that require pre-booking include Born & Bred (premium Korean BBQ), Mingles (South Korea’s only three Michelin-star restaurant), and Jungsik (modern Korean fine dining).

Why book ahead: The top end of Seoul's restaurant scene moves fast. Michelin-starred reservations can open and close within hours, and the most popular Korean BBQ spots book out weeks ahead.

Worth booking ahead in Seoul

The experiences below won't sell out the way the Changdeokgung Secret Garden tour does, but a little planning still makes a real difference. 

Walk-in tickets exist for all of them, but pre-booking skips queues, sometimes gets you a better price, and means one less thing to figure out on the day.

Lotte World Tower's Seoul Sky Observatory

Seoul Sky sits on floors 117 to 123 of the Lotte World Tower, the fifth-tallest building in the world. Same-day tickets are usually available, and walk-ins are fine even on busy days.

That said, Klook often has discounted tickets and you can scan the QR code straight at the gate. For us, that's a good enough reason to pre-book your Seoul Sky ticket on Klook before you go.

Lotte World and Everland theme parks

If theme parks are on your Seoul itinerary, both are worth knowing about before you go.

If you want to avoid that, the N Seoul Tower + cable car package on Klook lets you skip the cable car queue, and Klook sometimes runs discounted rates on the bundle.

If you'd rather walk up, the observatory-only ticket (same link as above 👆) will save you queue time as well. We preferred the walk up through Namsan Park on another visit a lot more than the cable car ride.

We've done it once, and it was one of the most unique and memorable things we did in Korea. Plus, wearing hanbok gets you free entry to all the royal palaces.

Do you need to pre-book? Not really. There are plenty of shops near the palace entrances. But pre-booking your hanbok rental means one less thing to figure out on the day.

We haven't done the professional hanbok photoshoot yet, but it's high on our list. If that appeals to you, check out this hanbok photoshoot.

eSIM for South Korea

Sorting your data before you fly is one of those small things that makes a big difference on arrival. No queuing at an airport kiosk, no hunting for a Wi-Fi signal just to pull up your hotel address.

We travel a lot, and an eSIM is now just part of how we prepare for every trip. Over the years we've tried several ones and landed on Airalo eSIM as our go-to eSIM provider. We've used it in South Korea specifically, and it works brilliantly.

Download the app, buy your South Korea plan, and install it at home before you leave. The moment the plane lands, you're connected.

What you don't need to book in Seoul

These are the attractions that come up most often when people ask about pre-booking in Seoul. The short answer for all of them: just show up.

Royal palaces – Tickets for the royal palaces (Gyeongbokgung, Changdeokgung, Changgyeonggung, and Deoksugung; Gyeonghuigung is free) are sold on-site, entry is very fast, and many people enter free anyway wearing hanbok.

Temples – Major Buddhist temples like Jogyesa and Bongeunsa are free and open for walk-ins. They're two of the many free things to do in Seoul that need no planning at all.

SEA LIFE COEX Aquarium – Walk-up tickets are available and it rarely sells out. This aquarium in Gangnam makes for a great rainy-day activity. If you'd prefer to skip the ticket queue or snag a discount, you can book the aquarium tickets ahead on Klook, though it's not really necessary.

Jamsil Baseball Stadium – KBO baseball is casual and relaxed compared to the MLB or Premier League. Tickets start from ₩7,000 (about £4, US$5, or €5) and are sold at the stadium kiosk on the day. On weekdays, they go on sale 1.5 hours before the game, on weekends and public holidays 2.5 hours before. Matches rarely sell out, so waiting for a sunny day is a perfectly reasonable strategy. If you'd rather have the full experience with local food and a guide, this baseball game and dinner is worth a look.

So, what should you book first?

The DMZ… always the DMZ! It's the one thing on this list with no workaround if you miss it, and it left the biggest impression of anything we did in Seoul. We’d book this DMZ tour before anything else.

Everything else has more flex than you might expect.

If you're still building out your days, our full rundown of the very best things to do in Seoul covers everything from the palaces to the food neighbourhoods and the themed cafés worth exploring.

And once your activities are sorted, Seoul’s best areas & hotels guide will help you find the right base for how you're planning to spend your time.

Have a brilliant trip!