Cheapest Destinations in Asia 2026: Flights Under $400

Asia doesn't have to cost a fortune to get to. In 2026, competition among carriers and new ultra-long-haul budget airlines have driven prices to historic lows. Here are 10 destinations you can reach for under $400 roundtrip.

1. Bangkok, Thailand — $380 from US West Coast

Bangkok remains the cheapest major Asian city to reach from the US and Europe. Zipair, Singapore's low-cost carrier Scoot, and AirAsia X all fly from Tokyo or Singapore to Bangkok for under $200. From the US, a layover in Tokyo or Seoul gets you there for $380 roundtrip on sale dates.

2. Hanoi, Vietnam — $350 from Europe

Vietnam has exploded as a budget travel destination. Qatar Airways and Turkish Airlines frequently have sales to Hanoi from Europe for $350-400 roundtrip. AirAsia connects from Kuala Lumpur for an additional $50.

3. Kuala Lumpur, Malaysia — $320 from London

Malaysia Airlines and AirAsia X fly direct from London to Kuala Lumpur for as low as $320 roundtrip during sales. From New York, expect $380-420 via Doha or Istanbul.

4. Taipei, Taiwan — $370 from US West Coast

EVA Air, China Airlines, and Starlux compete fiercely on US-Taipei routes. Sale fares hit $370-400 roundtrip from SFO, LAX, and SEA. The food alone is worth the flight.

5. Singapore — $390 from Australia

Scoot, Jetstar, and AirAsia fly between Australia and Singapore for under $200 one-way. From the US, expect $450-500 — but combine with a stopover in Tokyo or Taipei to break up the flight.

When to Book

The best time to book Asia flights is January-February (post-holiday slump) and September (low season). Avoid December and July when prices spike 40-60%. Use Flighko to compare across all carriers at once.