$597 Cheap flights to Southeast Asia

There are 40 airlines that fly to Southeast Asia on a routine basis, but Korean Air, Philippine Airlines and United Airlines happen to be the most popular among our users. In the past year, 27% of those who searched for flights to Southeast Asia looked to travel with Korean Air, making this airline the top choice among momondo travelers.

Consider booking a flight to Southeast Asia on a Sunday, which is the cheapest day of the week. You will also find that flying out on a Thursday is another low-cost option. Try to avoid booking your flight to Southeast Asia on Monday, which tends to be the most expensive day of the week.

Prices for flights to Southeast Asia refresh daily.

As of October 2025, there are 148 operators available to choose from for flights to Southeast Asia.

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Southeast Asia.

The necessary travel and health documents for your Southeast Asia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.