Cheap flights from New Delhi to Southeast Asia from ₹ 7,819

In general, July is the cheapest month to fly from New Delhi to Southeast Asia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 21,093. If you aren’t able to travel during the month of July, then book flights to Southeast Asia from New Delhi during September instead. Flights to Southeast Asia in September, while not as cheap as those in July, still average around ₹ 21,911.

The cheapest day to depart from New Delhi to Southeast Asia is on a Tuesday. Travellers who choose to depart for Southeast Asia on a Tuesday will often find tickets for as low as ₹ 26,855. The most expensive day to fly to Southeast Asia is Friday, with ticket prices averaging around ₹ 28,870.

According to our data, the cheapest time of day to fly to Southeast Asia is in the afternoon. momondo users have found flights departing from New Delhi to Southeast Asia in the afternoon for as low as ₹ 19,373. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are ₹ 26,562 on average. Flights to Southeast Asia from New Delhi in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from New Delhi Indira Gandhi Intl to Bangkok Don Mueang Intl for the best New Delhi Indira Gandhi Intl - Southeast Asia flight prices

You are more likely to see cheaper flights to Southeast Asia from New Delhi when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around ₹ 23,191 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from New Delhi for as low as ₹ 21,638 on momondo.

There are 4 cabin classes available to choose from on New Delhi Indira Gandhi Intl to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

IndiGo, Air India Express, and AirAsia are the most popular carriers operating from New Delhi Indira Gandhi Intl to Southeast Asia

Air India, IndiGo and Thai AirAsia X are the top three most popular airlines that fly to Southeast Asia from New Delhi according to our data. Air India is the first choice among our users, with 43% of people opting to fly with this airline when travelling to Southeast Asia. Keep in mind that there are 16 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

57 flights are operational daily from New Delhi to Southeast Asia as of February 2026. The most popular departure time for this route is 09:00, with 32% of flights per day taking off at midday.

As of February 2026, 400 flights take off from New Delhi and land in Southeast Asia each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.