Seoul is Asia's low-cost dynamo — Korean Air and a wall of budget carriers keep the region cheap from Incheon and Gimpo, and a string of nearby islands and megacities are weekend-cheap if you fly the off-season.
Seoul has two airports. Incheon (ICN) is the vast international hub — Korean Air, Asiana and a long bench of low-cost carriers; Gimpo (GMP) is the close-in city airport for domestic flights and a handful of short international hops to Tokyo, Osaka and Shanghai. Jeju Air, T’way, Jin Air and Air Busan are the budget carriers that make weekend trips across Asia genuinely cheap.
The tracked fares below are real prices aifly has observed leaving Seoul, cheapest first. The strengths are East Asia (Taipei, the Chinese cities, Vietnam’s beaches, the Japanese hops), plus connections to Australia, the Gulf, India and East Africa. Learn the season, pick the airport, set an alert, and book to the target.
When fares from Seoul actually drop
The cheapest stretches are the deep-winter months — December (excluding the holidays), January and February — Korea’s coldest, lowest-demand season, when the budget carriers slash regional fares. The early-summer lull before the July–August peak is the other value pocket. Avoid the obvious crowd-pullers: cherry-blossom season (early April), the autumn foliage (October), and above all the Lunar New Year and Chuseok holidays, when the whole country travels and fares spike across Asia.
Lead time matters: book the regional Asian hops 4–8 weeks out and the longer routes (Australia, the Gulf, India) around 6–10 weeks ahead, watching for the Jeju Air and T’way flash sales, which are frequent and genuinely cheap. A little date flexibility on the budget carriers goes a long way.
Which airlines keep Seoul cheap
Jeju Air, T’way, Jin Air and Air Busan are the floor-setters on the regional map — between them they blanket Japan, China, Taiwan, Vietnam and the rest of nearby Asia at rock-bottom fares, mostly from Incheon. Korean Air and Asiana anchor the full-service long-haul and include a bag.
For the longer routes — Melbourne, Dubai, Delhi, Colombo, Nairobi, Istanbul — Korean Air and Asiana fly many directly, while the Gulf carriers and Turkish connect onward with a bag included. Bag math: the Korean low-cost carriers sell strict no-bag base fares and weigh cabin bags hard — add the checked-bag fee before comparing, especially on a longer trip where a full-service Korean or Gulf carrier might come out ahead.
Getting to and from Seoul's airports
From Incheon (ICN), the AREX Airport Railroad is the smart move. The All-Stop train runs to Seoul Station for around ₩4,150–5,350 (a few dollars) in about an hour — by far the best value; the Express train does it nonstop in 43 minutes for a flat ₩13,000 (roughly US$10) with reserved seats. For most travellers the All-Stop is the obvious pick. From Gimpo (GMP), the subway and AREX reach central Seoul in 20–30 minutes for a standard fare.
Both airports are deeply integrated with Seoul’s superb, cheap public transport, so a taxi (₩60,000-plus from Incheon) makes little sense unless you’re arriving in the dead of night. Tap a T-money card and you’re set across trains, subways and buses. Confirm which airport you’re using — Incheon and Gimpo are well apart.
Cheapest destinations from Seoul right now
Good-price round-trip targets from aifly’s own tracked fares — “good price” means book at or below this; nothing here is invented or scraped from third parties. The live deal page for each route shows the current fare.
| Destination | Good price | Why go |
|---|---|---|
| Taipei | €102 | Night markets, mountains and one of Asia's friendliest cities — a quick, cheap weekend hop from Seoul. |
| Phu Quoc | €128 | Vietnam's tropical island — white-sand beaches, night markets and a fast-growing resort scene. |
| Dalian | €158 incl. bag | China's breezy northeastern port — beaches, squares and a relaxed seaside feel, a short hop across the Yellow Sea. |
| Qingdao | €158 | China's German-flavoured beer city on the coast — red-roofed old town, beaches and the home of Tsingtao. |
| Danang | €164 | Central Vietnam's beach city — gateway to Hoi An's lantern-lit old town and the Marble Mountains. |
| Manila | €177 | The Philippines' frenetic capital — Spanish-colonial Intramuros and the gateway to 7,000 islands. |
| Hanoi | €180 | Vietnam's atmospheric capital — Old Quarter chaos, lake-side calm and the gateway to Halong Bay. |
| Kathmandu | €277 incl. bag | Nepal's chaotic, captivating capital — temple squares, prayer flags and the gateway to the Himalaya. |
| Melbourne | €365 incl. bag | Australia's coffee-and-culture capital — laneways, sport and a long-haul worth the shoulder fare. |
| Istanbul | €369 incl. bag | Two continents, layered empires and relentless food — Korea's classic gateway to Europe and beyond. |
| Delhi | €425 incl. bag | India's vast, layered capital — Mughal monuments, street food and the gateway to the Golden Triangle. |
| Dubai | €551 incl. bag | The Gulf's showpiece city — beaches, gold souks and the world's busiest hub for onward connections. |
| Colombo | €609 incl. bag | Sri Lanka's seafront capital — a buzzing mix of colonial, Tamil and Sinhalese, and the island's gateway. |
| Nairobi | €625 | East Africa's hub and safari springboard — Nairobi National Park sits on the city's doorstep. |
Frequently asked questions
What's the cheapest month to fly from Seoul?
The deep-winter months — December (outside the holidays), January and February — are cheapest, with the early-summer lull another pocket. Avoid cherry-blossom season (early April), autumn foliage (October) and the Lunar New Year / Chuseok holidays.
Which airline is cheapest from Seoul?
The Korean low-cost carriers — Jeju Air, T'way, Jin Air, Air Busan — set the floor on the regional map across Japan, China, Taiwan and Vietnam. Korean Air and Asiana anchor the full-service long-haul with a bag. Add a checked bag to the LCC fares before comparing.
How do I get from Incheon airport to Seoul cheaply?
Take the AREX All-Stop train to Seoul Station for a few dollars (~₩4,150–5,350) in about an hour, or the nonstop Express for a flat ₩13,000 (~US$10) in 43 minutes. Tap a T-money card. A taxi (₩60,000+) only makes sense for a dead-of-night arrival.
Which Seoul airport should I fly from?
Incheon (ICN) is the big international hub with the cheapest budget-carrier routes; Gimpo (GMP) is the close-in city airport for domestic flights and short hops to Tokyo, Osaka and Shanghai. Confirm which one your flight uses — they're well apart.
Where can I fly cheaply from Seoul right now?
The table above lists aifly's tracked good-price targets, cheapest first — Seoul is strong on East Asia (Taipei, Dalian, Qingdao, the Vietnam beaches, the Japanese hops), plus Australia, the Gulf, India and East Africa.
Are the prices on this page guaranteed?
No — they're tracked good-price benchmarks (book at or below). Live fares move daily; the deal page for each route shows the current price. Treat the targets as your buy signal.
Seasons, carriers and airport details verified June 2026 and can change — confirm current conditions before you book.