$167 Find Cheap Flights from Chicago to Saint Lucia - Compare and Save

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Price, demand and travel trends for Chicago to Saint Lucia flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Chicago to Saint Lucia cheaper or more expensive than last year?

Fares from Chicago to Saint Lucia are running about 9% higher than they were around this time last year, averaging $829 round-trip.

What are the cheapest fares from Chicago to Saint Lucia right now?

The cheapest fare from Chicago to Saint Lucia in the last week was $373 round-trip, to Castries Hewanorra (UVF).

What’s the cheapest month to fly from Chicago to Saint Lucia?

January is the cheapest time of year to fly, with average fares of $750. Prices are highest in March, when average flight costs increase to around $974.

When is the best time to book flights from Chicago to Saint Lucia?

Book your flights 10 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 30% compared to booking last-minute (within 2 weeks of departure).

Which airport in Saint Lucia is the cheapest to fly to from Chicago?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Saint Lucia are:

• Castries George F. L. Charle (SLU) from $783
• Castries Hewanorra (UVF) from $828

What’s the cheapest day to fly from Chicago to Saint Lucia?

Wednesday tends to be the cheapest day to fly from Chicago to Saint Lucia, while Saturday is the most expensive. Fares run about 32% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Chicago to Saint Lucia?

Data from the past 12 months shows it's cheapest to fly to Saint Lucia during the night with average prices of $627. The evening is the most expensive time to fly, with average prices of $862.

Key details for Chicago to Saint Lucia flights

Low season

September

Cheapest flight

$167
Beat the crowds with an average 78% drop in travelers.
The most popular month to fly with an average 38% increase in travelers.
One-way flight from Chicago O'Hare Intl Airport to Castries

Your Chicago to Saint Lucia flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Chicago to Saint Lucia?

    Yes. Fares from Chicago to Saint Lucia are low right now. As a rule of thumb, a round-trip under $691 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Chicago to Saint Lucia?

    Over the past 12 months, round-trip fares from Chicago to Saint Lucia have ranged from $691 to $1,062.

  • What are the main airports serving Saint Lucia?

    Flights to Saint Lucia use two main airports, Castries Hewanorra (UVF) and Castries George F. L. Charle (SLU).

  • What airlines fly nonstop from Chicago to Saint Lucia?

    Based on the flight schedule for the next 3 months, just one airline regularly flies nonstop from Chicago to Saint Lucia: United Airlines.

  • Is it cheaper to fly with a layover from Chicago to Saint Lucia?

    Yes. Nonstop flights from Chicago to Saint Lucia average $1,150 over the past 12 months, but flights with a layover can cost less. The most affordable connecting airports are:

    • Toronto Pearson Intl (YYZ) from $527
    • New York John F Kennedy Intl (JFK) from $658
    • Miami (MIA) from $824

  • How long is a flight from Chicago to Saint Lucia?

    Flights from Chicago to Saint Lucia take 5h 33m on average.

  • Which cabin classes are available on flights from Chicago to Saint Lucia?

    On flights from Chicago to Saint Lucia you can book Economy Class or First Class.

  • What are the earliest and latest flights from Chicago to Saint Lucia?

    The earliest nonstop flight from Chicago to Saint Lucia departs at 8:52 am and the latest departs at 8:52 am. Nonstop flights take about 5h 33m.

  • What are the visa and passport requirements for traveling from Chicago to Saint Lucia?

    When traveling from Chicago O'Hare International Airport (ORD) to Saint Lucia, U.S. citizens need to have a valid passport for at least six months beyond their expected departure from Saint Lucia. This is a common requirement for many international destinations. Although a visa is optional for short tourist stays for U.S. citizens, it's essential to confirm if there are any specific entry requirements, such as return or onward travel tickets and proof of sufficient funds for the duration of the stay.

  • Is Hewanorra International Airport (UVF) the only airport in Saint Lucia?

    Hewanorra International Airport (UVF) is one of many airports in Saint Lucia. The island also has George F. L. Charles Airport (SLU) was previously named Vigie Airport. George F. L. Charles Airport (SLU) is located closer to the capital city, Castries, and primarily handles regional and short-haul flights within the Caribbean. It serves as an essential hub for interisland travel. Hewanorra International Airport, located in Vieux Fort, is the larger of the two and typically handles longer international flights.

  • What are some sustainable travel tips for flights from Chicago to Saint Lucia?

    Opt for airlines committed to sustainability for your flight to Saint Lucia. Packing light and using digital boarding passes can help reduce your carbon footprint. In Saint Lucia, consider eco-friendly activities and local transportation options that minimize environmental impact.

  • What's the closest airport to Sulphur Springs in Saint Lucia?

    The closest airport to Sulphur Springs in Saint Lucia is Hewanorra International Airport (UVF). It is located in Vieux Fort and conveniently positioned for travelers visiting Sulphur Springs. Hewanorra International Airport serves as a gateway for exploring Saint Lucia (UVF), making it an ideal starting point for your journey around the island.

Your guide to booking Chicago to Saint Lucia flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 10 weeks before your trip. KAYAK data shows fares in this window are around 30% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for January when flights are typically cheapest and avoid March when prices are at their highest.
  • Flying on Wednesday is usually the cheapest. Flights on Saturday cost about 32% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Castries George F. L. Charle (SLU) is the cheapest airport to fly into from Chicago. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Castries, which is the most popular destination in Saint Lucia. From there, it's easy to continue on to other popular destinations such as Soufrière, Gros Islet and Vieux Fort.
  • If you want the shortest trip, choose the nonstop route from Chicago O'Hare Intl Airport to Saint Lucia. If you'd rather save money, the route from Chicago Midway Airport via Toronto Pearson Intl (YYZ) is usually the cheapest.
  • Flights from Chicago O'Hare International Airport (ORD) to Hewanorra International Airport (UVF) in Saint Lucia often involve layovers at key U.S. or Caribbean hubs. Common layover airports include Miami International Airport (MIA), Florida, and Hartsfield-Jackson Atlanta International Airport (ATL), Georgia. These stops provide convenient transition points en route to Saint Lucia.
  • Before embarking on your journey, relax in one of the lounges at Chicago O'Hare International Airport (ORD). The United Club and American Airlines Admirals Club offer amenities like comfortable seating, refreshments, and Wi-Fi, ensuring a relaxed start to your Saint Lucia trip.
  • George F. L. Charles Airport (SLU) is closer to the city center of Castries, the capital of Saint Lucia. This airport is conveniently situated just a few miles north of downtown Castries, making it a more accessible option for travelers heading to the capital and nearby areas. On the other hand, Hewanorra International Airport (UVF), located towards the southern end of the island in Vieux Fort, is about an hour's drive from Castries.
  • Chicago O'Hare International Airport (ORD) provides various services for passengers with mobility challenges, including wheelchair assistance and support through check-in, security, and boarding. Advance coordination with your airline and the airport is recommended to ensure a smooth experience.
  • Major airlines operating from Chicago O'Hare International Airport (ORD) to Saint Lucia, such as American Airlines and Delta Air Lines, offer various flight plan options as they have extensive flight networks. This ensures flexibility and convenience for travelers heading to this Caribbean paradise.

Reviews of the top 3 airlines serving from Chicago to Saint Lucia

 
Need help choosing which airline to fly with from Chicago to Saint Lucia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8633 reviews
7.2Food
7.8Entertainment
7.8Comfort
8.5Crew
8.1Boarding
Airline reviews

I'm 6' 2" and even in economy plenty of leg room

10.0 ExcellentMark, Oct 2026
Read more Delta reviews

I'm 6' 2" and even in economy plenty of leg room

Horrible experience. Delta delayed the flight to 11pm which happens. Apparently the pilots were there but we were waiting for flight attendants to arrive from Detroit and they were delayed. They could have made arrangements but that’s fine. What was truly horrible was that at 10:50pm the pilot comes out and says the flight will be cancelled but hasn’t been cancelled yet in the system. It’s being cancelled because the pilots have timed out. As soon as that plane got delayed past 10:50pm delta knew it couldn’t fly. Yet they made us wait around for hours. When the flight finally got cancelled all the area hotels were booked and flights for the next day were unavailable until midday. All I wanted was to spend one day with my family before needing to fly abroad on another delta flight. That will be my last flight with them. I’ll take my 800k miles flown and annual spend to an airline that isn’t so thoughtless.

THI IS THE 3RD CONSECUTIVE FLIGHT FROM ORD TO MSP THAT HAS BEEN DELAYED 2+ HOURS. CRAZY

The plane was a rather tired 737-800, with old style small luggage bins. Poor air flow. USB charger in the infotainment system was not functioning. The flight was 2 hours late due to crew rest requirements (not their fault). On arrival in Seattle, waited on the tarmac for 30 minutes with very few updates from the crew.

The crew was very inconsiderate and rude. My flight was scheduled to depart at 6:00am. I received a call from the crew at 5:40am, asking if I was going to make the flight because I was the only one that hasn't boarded yet and boarding ends at 5:50am. I let them know that I will be at the gate in a few minutes, before the 5:50am cutoff. When I arrived at the gate at 5:45am the gate was closed. Departing early on last minute notice without having all passengers on board is inconsiderate and unprofessional.

Very easy to use and convenient, you can perform any action within the same portal

Okay considering we had weather delays which the Pilot notified us of immediately!

The boarding was organized and informative but the plane was tight meaning that you were sitting on one another and extremely uncomfortable. It’s disappointing that can’t have common seating comfort on the plane.

Everything could have benn better. Short fly, no food, no entertainment and no wifi.

Stop changing gates. Stop cancelling flights Stop moving my seat.

On time. Carry on and personal bag was accommodated on the plane. Entertainment was accessible without bringing own device. Whole can of juice was provided rather than a pour.

Price was crazy watch it if you Chan he your flight

On time, easy boarding. Anytime you sit in an economy seat, it’s uncomfortable. New plane and the bathrooms were in the galley at the back of the plane which seemed odd.

Terrible service - they don’t want to be there and bad food. Entertainment system in economy from the 2000s

No drink service but there was no N/A as an option to choose. Seats were extremely tight. I am under 5.5 and I bumped my knees have no idea how taller people could manage.

Flight delayed, last seat on the plane, no arrival Gate available due to the plane departing late

Kayak booked this flight with only 1h 20min layover in Chicago. This made it impossible for me and several other passengers to reach this flight. Moreover, the gate closed boarding in spite of several passengers still on their way without waiting even one more minute. However, the plane departed with 20min (!) delay, i.e., there would have been at least 15 min time to let the delayed passengers board without causing any delays. I complained and as a "thank you" the attendent booked us on the last (!) flight to Indianapolis ~7h later! Thankfully, I caught the spitefulness and the United customer line rebooked the flight to an earlier flight. Although I can't grade this particular flight since I never had a chance to take it, Kayak made the mistake of a too short layover and the crew at the gate was awful.

Flight did not have wifi service. It was experiencing technical difficulties. Definitely and old plane that needs updating.

This flight has a history of leaving late, however, I was pleasantly surprised that it was not delayed this day. The flight went smooth, except I was in a window seat and the wall and my feet were freezing. I found it difficult to sleep due to being so cold, I also was using 2 provided UAL blankets and could not get my feet warm. This was annoying, but I still made it there on time and safe.

Old 757 with poor entertainment system. United no longer partners with United for free text and email. O'Hara an absolute disaster! Limited gates clauses two hour delay. Unfortunately this appears to be the norm.

First class snacks - stewardess gave out multiples to everyone until there was almost no selection left when she got back to me last in first class cabin. Nothing left that I would eat.

My feedback from the trip to Columbia to Chicago was meant for Chicago to Denver.

The WiFi was out gr entire flight. Had to Diane for almost 1 hour to wait for a gate to open up for plane to dock. Very bad experience.

After boarding, the AC was shut off on the flight. At business class, I really could not breathe. I was absolutely dripping sweat. I was told by the FA that there was nothing they could do but I could stand by the door until departure. So, that's what I did. I was clearly in the way while the FAs were trying to do their work, but I had to be able to breathe. After that, of course, I had sweated up a lot so was very uncomfortable for the six hour flight.

DELAYED AGAIN and AGAIN and AGAIN - not only that, you delay in 20 minute increments for hours and hours instead of having an accurate delay understanding.

AA was fine....the overall experience was subpar, but not due to the airline due to broader issues

No ground air conditioner for the plane. Very hot and humid prior to take off which was an uncomfortable period of time.

Check-in process was poor, very poor, only one person to check-in all passengers, so if one passenger had a check-in issue, all other passengers were delayed. All check-ins should have two airline staff to check-in passengers.

The flight up was great no issues. The flight back home was a cluster. I was told the plane I was waiting on was giving to another flight which caused me to miss my connection flight. Granted the airline did great with getting hotel and vouchr for food.

Flight was delayed and so much of inconvenience related to the gate change.

More options for your flight from Chicago to Saint Lucia

Complete your trip to Saint Lucia with a hotel stay or car rental