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Visitors flying to Thailand who want to visit major tourist attractions like the Grand Palace should book flights from Chicago that arrive at the Suvarnabhumi International Airport (BKK) in Bangkok. From the airport, it is only about 30min by taxi or around 1h by train to the Grand Palace.

United States citizens flying from Chicago to Thailand will need to have a current passport, which will be valid for at least six months past the date of entry into the country. Immigration officials in Thailand may also request to see your return ticket to confirm your intended length of stay. United States tourists entering Thailand will not require a visa so long as their visit will be for no more than 30 days. For longer stays or if you are visiting the country for work or educational reasons, a visa may be required. For the most current entry rules and requirements relating to visas, consult the Royal Thai Embassy before departure.

There are quite a few airline carriers that offer flights to major destination cities across Thailand. For example, you can book a flight on Thai Airways to Chiang Mai (CNX) in the north of the country. In the eastern part of the country, Ubon Ratchathani (UBP) can be reached from Chicago on Korean Air or even Finnair. Qatar Airways and Emirates both offer flights from Chicago to Thailand’s capital city Bangkok (BKK), while cheap flights to Phuket City (HKT) in southern Thailand are available from Spirit Airlines and Singapore Airlines.

Yes, buses depart from the main terminal of the airport to the city center every 30min or so. Expect your ride to take about 1h. Alternatively, a train departs from the airport about every 15min, arriving in the city center around 25min later. If you prefer, there are also taxis waiting outside Gate 4 of the main terminal, which can have you in the city center in around 20min, depending on traffic conditions.

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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 Chicago to Thailand 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 Chicago to Thailand up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.