S$ 536 Find Cheap Flights from Illinois to Southeast Asia

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Southeast Asia.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Southeast Asia is likely to change within 7 days, so travellers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Illinois to Southeast Asia with an airline and back with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Illinois to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

There are 23 airports in Southeast Asia. The busiest airport is Singapore Changi Airport (SIN), with 17% of all flights arriving there.

Based on KAYAK data, the cheapest day to fly to Southeast Asia is Wednesday when return tickets can be as cheap as S$ 2,020. On the other hand, the most expensive day to fly is Saturday, when return prices are S$ 3,103 on average.

The cheapest time of day to fly to Southeast Asia is generally in the evening, when round-trip flights cost S$ 1,799 on average. Morning departures are around 28% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Asia is generally in the morning, which is peak travel time and where the average cost of a ticket is S$ 2,310.

The cheapest month for flights from Illinois to Southeast Asia is February, when tickets cost S$ 1,390 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is S$ 2,502 and S$ 2,361 respectively.

To get a below-average price on the flight from Illinois to Southeast Asia, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

An average direct flight from Illinois to Southeast Asia takes 23h 50m, covering a distance of 24361 km. The shortest route is St. Louis (STL) to Singapore (SIN) with an average flight time of 22h 25m.

Based on KAYAK flight searches, the most popular destination is Singapore (100% of total searches to Southeast Asia).