Korea rewards prepared travellers. The country is easy to navigate, the infrastructure is excellent, and most logistics become almost effortless once you have the right SIM card, transit card, and apps installed before you land. Get these eight things sorted in advance and you will walk out of Incheon or Gimhae Airport (김해공항) ready to go.
Last updated: June 2026.
1. eSIM or SIM Card — Get Data Sorted Before You Land
Korea’s mobile networks are fast (LTE and 5G widely available), and data is cheap by international standards. International roaming, by contrast, is expensive and often slower. Sorting your connectivity before arrival is one of the highest-value things you can do for your trip.
eSIM (recommended for most travellers): If your phone supports eSIM (most smartphones released from 2019 onwards do — check your settings), a Korean eSIM can be purchased and activated before you even board your flight. Plans typically run around ₩20,000–40,000 for 7–30 days of data, though prices vary by provider and plan; always check the current offer before buying. Activation is usually instant via QR code.
Physical SIM: Available at Incheon International Airport (인천국제공항) arrivals halls and Gimhae Airport (김해공항) arrivals, as well as at convenience stores (편의점) like GS25, CU, and 7-Eleven in the city. The three main operators are SK Telecom, KT (olleh), and LG U+. Tourist SIM cards include data and, in many cases, a local Korean number for calling and receiving texts. Plans start around ₩10,000–30,000 depending on duration and data allowance — check official operator sites for current pricing.
Pocket Wi-Fi: Rental units are available at both airports. Convenient if you are travelling in a group sharing one device, but requires carrying and charging an extra gadget. Most solo and couple travellers prefer an eSIM or SIM.
Full breakdown of options, providers, and where to buy: Korea SIM & eSIM Guide.
2. T-money Card (티머니) — Your Transit Pass for Everything
The T-money card (티머니) is a rechargeable IC card that works on subway systems, city buses, and most inter-city buses across Korea, including Busan’s metro and the Busan–Gimhae Light Rail (BGL) from the airport. It also works at many convenience stores and some taxis as a payment method.
Cards are sold at airport information desks, convenience stores, and subway station booths. The card itself costs around ₩2,500–4,000 (this fee is non-refundable); the balance loaded on top is refundable at subway customer service offices. Top up at any convenience store or subway top-up machine — machines have English menus.
Using a T-money card gives you a slight fare discount compared to single-journey tickets, and eliminates the need to buy individual tickets at every station. It is practically essential — pick one up at the airport when you land, or order a card-loading function in certain travel apps (like Naver or Kakao Pay) before arrival.
For a deeper look at how cards, cash, and transit payments work together in Korea: Paying in Korea: Cards, Cash & T-money.
3. Essential Apps to Download Before You Fly
These are the apps that make day-to-day travel in Korea significantly easier. Download them while you are still on your home network — some require a Korean phone number for full setup, but core features work without one.
- Naver Maps (네이버 지도): The standard navigation app in Korea. More accurate than Google Maps for Korean transit routes, walking directions, and bus times. Available on iOS and Android.
- Kakao Maps (카카오맵): A strong alternative to Naver Maps, preferred by many locals. Taxi booking integration via Kakao T (카카오T) is useful for hailing a cab without flagging one on the street.
- Kakao T (카카오T): The dominant ride-hailing app. Works like Uber. You can book regular taxis, premium taxis, and minivans. A credit card registered on signup makes payment seamless.
- Papago (파파고): Naver’s translation app. Camera translation for menus and signs is excellent — point your phone at a Korean menu and it overlays English. More reliable for Korean than Google Translate in many contexts.
- Coupang Eats / Baemin (배달의민족): Food delivery apps — useful if you want to order to your accommodation, though most require a Korean phone number for account creation.
- Korea Immigration Smart Entry Service (HiKorea): If you are eligible for automated immigration lanes, registering in advance can save time at the border. Check the official Hi Korea website for current eligibility criteria.
4. Cash, Cards & Currency Exchange
Korea is increasingly cashless at hotels, chain restaurants, and convenience stores — your Visa or Mastercard will work at most of these without issue. However, traditional markets (시장), smaller street food vendors, and some local restaurants still operate cash-only or heavily prefer it. Arriving with some Korean Won (원, KRW) is recommended.
Where to exchange: Airport exchange desks are convenient but typically offer slightly worse rates than city-centre exchange offices. The Myeong-dong (명동) area in Seoul and the area around Seomyeon (서면) in Busan have private exchange offices known for competitive rates. Banks are reliable but slower. ATMs accepting foreign cards (Citibank, Woori, and most post office ATMs) are widely available.
How much cash to carry: This depends on your travel style, but a general guideline for Busan-based travellers is to have around ₩50,000–100,000 on hand at any time for markets, street food, and smaller local restaurants. Exact amounts will vary based on your itinerary and spending habits.
Credit card tips: Notify your bank before travel to avoid fraud blocks. Many Korean card terminals prompt you to choose between "credit" and "cheque" — always select credit for foreign cards. American Express acceptance is more limited than Visa or Mastercard.
Full guide: Paying in Korea: Cards, Cash & T-money.
5. Hotel & Accommodation Booking
Korea has excellent accommodation at every price point. Booking in advance is strongly advised for peak periods — summer beach season (July–August), major Korean public holidays (Chuseok 추석 and Seollal 설날), and popular festival weekends. Outside these windows, last-minute availability is usually fine.
Options by style:
- Motels and guesthouses (모텔 / 게스트하우스): Budget to mid-range. Korea’s motels are typically clean and functional; the category has a better reputation than in many other countries. Guesthouses offer a more social environment and are popular with solo travellers.
- Yeogwan (여관) and Minbak (민박): Traditional inn-style accommodation, often family-run. Less common in central tourist areas but still found near ferry terminals and in smaller towns.
- Mid-range and business hotels: Korean domestic chains (Lotte, Shilla Staybridge, Tmark) and international brands are well-represented in Seoul and Busan. Rates vary significantly by season — check booking platforms for current pricing.
- Jjimjilbang (찜질방): A Korean 24-hour bathhouse with sleeping areas. Not for everyone, but it is a uniquely Korean experience and very affordable for an overnight stay. → Jjimjilbang: Korean Bathhouse Guide
Booking platforms: Agoda, Booking.com, and Airbnb all work in Korea. Korean-native platforms like Yanolja (야놀자) and Goodchoice (여기어때) occasionally have better rates but require Korean-language navigation. Many hotels also offer lower rates booking direct.
For Busan specifically, neighbourhood choice matters a lot — the right area depends on your itinerary. See Where to Stay in Busan for a full area breakdown.
6. Visa & Entry Requirements
South Korea offers visa-free entry to citizens of a large number of countries for short stays — typically 30, 60, or 90 days depending on your nationality and any current bilateral agreements. However, entry requirements can change, and it is essential to check the official South Korean immigration authority website (Hi Korea: www.hikorea.go.kr) or your country’s foreign affairs ministry for the current rules before you travel.
K-ETA (Korea Electronic Travel Authorisation): Some nationalities that were previously exempt have been brought into a K-ETA requirement (or vice versa). Check your current status well in advance of travel, as requirements can be suspended or reinstated. The K-ETA application is straightforward and typically approved within 72 hours.
Passport validity: Your passport should ideally have at least six months of validity beyond your planned departure date from Korea. Some airlines and immigration officers apply this rule strictly; check with your airline.
On arrival: Both Incheon (인천국제공항) and Gimhae airports have clear immigration signage in English. Have your accommodation address for the first night written down or easily accessible — immigration officers may ask for it.
7. Weather, Seasons & What to Pack
Korea has four clearly defined seasons, and packing correctly makes a significant difference to your comfort.
- Spring (March–May): Mild and pleasant. Light layers — a jacket for mornings and evenings, t-shirts for daytime. Cherry blossoms typically peak in late March to mid-April, depending on the year.
- Summer (June–August): Hot and humid. Korea’s rainy season (장마, jangma) typically runs from late June through mid-July, bringing heavy rain. Pack light, breathable clothing, a compact umbrella or waterproof jacket, and mosquito repellent. Beach-goers will want swimwear.
- Autumn (September–November): Often considered the best season. Cool and dry, with spectacular foliage. Layers work well — a warm jacket for October and November.
- Winter (December–February): Cold and sometimes snowy, especially inland. Seoul temperatures can drop well below freezing; Busan (부산) is milder due to its coastal location but still cold by most international visitors’ standards. A proper winter coat, thermal layers, and waterproof footwear are recommended.
For Busan-focused seasonal advice: Best Time to Visit Korea.
Footwear note: Korean indoor spaces — traditional restaurants, temples, and some guesthouses — require removing shoes at the entrance. Slip-on shoes or those with easy fastenings save time and frustration.
8. Power Adaptor & Voltage
Korea uses Type C and Type F plugs (the round two-pin European style) at 220V / 60Hz. If you are travelling from a country using flat-pin plugs (USA, UK, Australia, Japan), you will need an adaptor. Universal travel adaptors covering South Korea are widely available online and at airport stores.
Most modern electronics (laptops, phone chargers, cameras) are dual-voltage (100–240V) and will work with just an adaptor — check your device’s power brick for the voltage range before you leave. High-wattage appliances (hair dryers, straighteners) may not be compatible; it is usually easier to use the one provided by your hotel.
USB ports: Many mid-range and above hotels in Korea provide USB charging ports at the bedside. Bringing a short USB-C cable alongside your adaptor covers most charging scenarios.
With these eight items checked off, your Korea trip logistics are essentially handled. For Busan-specific planning — including getting from the airport, the best areas to stay, and what the city actually costs — the guides below cover the detail.
Do I need cash in South Korea in 2026?
You will need some cash for street food stalls, traditional markets (시장), and smaller local restaurants that do not accept cards. Hotels, convenience stores, and chain restaurants almost universally accept credit cards. Carrying around ₩50,000–100,000 at any time is a reasonable guideline, though exact needs vary by itinerary.
Where can I buy a T-money card in Korea?
T-money cards (티머니) are sold at airport information desks, subway station ticket booths, and convenience stores (CU, GS25, 7-Eleven) throughout Korea. The card costs around ₩2,500–4,000; top up the balance at any convenience store or subway top-up machine. Machines have English menus.
Is an eSIM better than a physical SIM for Korea?
For most travellers with a compatible phone, yes. An eSIM can be purchased and activated before you land, costs are typically competitive, and there is no physical card to lose. If your phone does not support eSIM, physical tourist SIM cards are sold at both major Korean international airports and at convenience stores in the city.
Do I need a visa to visit South Korea?
Citizens of many countries can enter South Korea visa-free for short stays, but requirements vary by nationality and can change. Always check the current rules on the official Hi Korea website (www.hikorea.go.kr) or your country’s foreign affairs ministry well before you travel. Some nationalities may need to apply for a K-ETA (Korea Electronic Travel Authorisation) in advance.
What type of plug adaptor do I need for South Korea?
Korea uses Type C and Type F round two-pin plugs at 220V / 60Hz. If you are travelling from the USA, UK, Australia, or Japan, you will need a plug adaptor. Most modern phone chargers and laptop power bricks are dual-voltage (100–240V) and only need an adaptor, not a voltage converter — check the label on your device’s charger to confirm.