Cheap flights from Illinois to Saint Lucia from $190
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Saint Lucia departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Illinois to Saint Lucia
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Saint Lucia?
The month of January is, on average, the cheapest month to fly to Saint Lucia from Illinois, with most prices found around $580. If you aren’t able to travel to Saint Lucia during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $594.
What is the cheapest day to depart on your flight to Saint Lucia?
Our data shows that Tuesday is the least expensive day to fly to Saint Lucia. Tickets to fly out on this day can be as low as $628. On the other hand, Thursday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,262.
What is the cheapest time of day to depart on your flight to Saint Lucia?
Our data shows that the cheapest Illinois to Saint Lucia flights are usually those with departure times in the afternoon. Our users have found flights to Saint Lucia in the afternoon for as low as $613. Flights in the morning are often more expensive with an average ticket price of $862.
What is the cheapest Illinois to Saint Lucia flight route?
Fly from Chicago O'Hare Intl to Castries Hewanorra for the best Illinois - Saint Lucia flight prices
What is the cheapest airline that flies from Illinois to Saint Lucia?
Air Canada, JetBlue, and Delta are the most popular carriers operating from Illinois to Saint Lucia
What airlines fly to Saint Lucia?
American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Saint Lucia from Illinois according to our data. American Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Saint Lucia. Keep in mind that there are 3 different airlines that fly to Saint Lucia on a routine basis, so you have a few additional options to choose from.
How long is the flight from Illinois to Saint Lucia?
The flight from Illinois to Saint Lucia depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Chicago (a popular airport in Illinois) to Castries (the most popular airport in Saint Lucia), then the flight time is 6h 22m on average. If you fly from Moline (another popular airport in Illinois) to Castries, then the average flight time is 7h 15m.
Cheap Illinois to Saint Lucia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Illinois to Saint Lucia
When did momondo last update prices for flights from Illinois to Saint Lucia?
Prices for flights from Illinois to Saint Lucia were last updated today.
How many operators does momondo search for flights from Illinois to Saint Lucia?
As of July 2025, there are 3 operators available to choose from for flights from Illinois to Saint Lucia.
How old do you have to be to fly from Illinois to Saint Lucia?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Saint Lucia.
What documentation or ID do you need to fly to Saint Lucia?
The travel and health documents you'll need for your trip to Saint Lucia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint Lucia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Illinois to Saint Lucia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Illinois to Saint Lucia is Boeing 737-700 (100.00% of total bookings).
Best airlines flying from Illinois to Saint Lucia
Compare and see reviews for airlines that fly from Illinois to Saint Lucia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $443 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $555 | Free Cancellation | Rating 8.0 7,982 reviews | |||
| PriceFrom $570 | Free Cancellation | Rating 7.4 8,861 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Illinois to Saint Lucia?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Saint Lucia from Illinois.
Can I find flights from Illinois to Saint Lucia with flexible booking policies on momondo?
momondo does allow users to show only those flights to Saint Lucia from Illinois which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Illinois to Saint Lucia?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Saint Lucia from Illinois.
I’m not ready to book a flight from Illinois to Saint Lucia right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Illinois to Saint Lucia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Saint Lucia and let you know when they change.