฿11,861 Find Cheap Flights from Illinois to Southeast Asia – Compare and Save

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 Bangkok Suvarnabhumi Airport (BKK), with 17% of all flights arriving there.

The cheapest month for flights from Illinois to Southeast Asia is February, when tickets cost ฿16,954 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is ฿32,791 and ฿29,177 respectively.

To get a below-average price on a flight from Illinois to Southeast Asia, you should book around 4 weeks before departure, which saves you about 10% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

An average direct flight from Illinois to Southeast Asia takes 31h 19m, covering a distance of 22426 km. The shortest route is Chicago O'Hare Intl Airport (ORD) to Bangkok Suvarnabhumi Airport (BKK) with an average flight time of 21h 05m.

Based on KAYAK flight searches, the most popular destination is Bangkok (92% of total searches to Southeast Asia). The next most popular destinations are Phuket City (4%) and Chiang Mai (3%). Searches for flights to Krabi (1%), to Ko Samui (1%), and to Chiang Rai (0%) are also popular.