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High season is considered to be January, February and December. The cheapest month to fly to Illinois is January.
FAQs - booking Illinois flights
Can I fly to Illinois? Are there any travel restrictions when entering Illinois?
Most visitors from Haikou will not be allowed to enter Illinois. Citizens and lawful permanent residents of the United States, certain family members, and other individuals who meet specified exceptions, will be allowed to enter the United States.
Please find all the exceptions in the last proclamations. Read more about travel restrictions for Illinois
Can I fly to Illinois without having to quarantine on arrival?
Visitors from Haikou are not required to quarantine after entering Illinois.
Do I need to take a coronavirus (Covid-19) test before flying to Illinois?
Visitors from Haikou must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Illinois.
Can vaccinated people travel to Illinois?
Current regulations for vaccinated travelers to Illinois: most visitors from Haikou may enter Illinois but may still need to provide proof of negative COVID test.
What documents do I need to fly to Illinois?
Passenger Disclosure and Attestation
New York State Traveler Health Form
Los Angeles Traveler Form
How does KAYAK find such low prices on flights to Illinois?
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 to Illinois.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Haikou to Illinois?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights to Illinois?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Illinois with an airline and back with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Illinois?
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 to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.
Safety measures for airlines flying from Haikou to Illinois
Airlines flying from Haikou to Illinois have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.
Daily cleaning, installation of cabin HEPA filters on flights from Haikou to Illinois
Masks required on board, masks provided on flights from Haikou to Illinois
Social distancing seating
Middle seats unavailable to book on flights from Haikou to Illinois
Testing for antibodies, testing for symptoms for flights from Haikou to Illinois