ORD - SLU

$684 Find Cheap Flights from Chicago to Castries

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Castries departing on 6/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Castries

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Castries, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Castries, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Chicago to Castries

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Castries that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Chicago to Castries

KAYAK's recommended round-trip deals from the most popular airlines that fly from Chicago to Castries.
Discover the best prices for you by selecting your travel dates on KAYAK.
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9:08 pm - 9:30 amORD-SLU
35h 22m2 stops
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4:35 pm - 8:05 pmSLU-ORD
28h 30m2 stops
Mon, Jun 9 - Mon, Jun 16
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5:51 am - 1:10 pmORD-SLU
30h 19m3 stops
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5:00 am - 12:05 amSLU-ORD
20h 05m2 stops
Wed, May 21 - Sun, May 25
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5:51 am - 1:10 pmORD-SLU
30h 19m3 stops
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5:00 am - 11:29 pmSLU-ORD
19h 29m3 stops
Wed, May 21 - Sun, May 25
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5:05 am - 1:10 pmORD-SLU
31h 05m2 stops
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12:15 pm - 12:54 pmSLU-ORD
25h 39m2 stops
Fri, Jun 13 - Fri, Jun 20
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5:51 am - 1:10 pmORD-SLU
30h 19m3 stops
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1:55 pm - 9:56 pmSLU-ORD
33h 01m3 stops
Fri, Jun 13 - Fri, Jun 20
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8:25 pm - 7:00 pmORD-SLU
21h 35m2 stops
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11:35 am - 6:37 amSLU-ORD
20h 02m3 stops
Tue, Jun 17 - Sat, Jun 21
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3:50 pm - 7:00 pmORD-SLU
26h 10m2 stops
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4:35 pm - 8:07 pmSLU-ORD
28h 32m2 stops
Thu, May 22 - Mon, May 26
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9:35 am - 7:00 pmORD-SLU
32h 25m2 stops
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5:00 am - 10:47 pmSLU-ORD
18h 47m2 stops
Tue, May 13 - Sun, Sep 21
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2:16 pm - 7:00 pmORD-SLU
27h 44m3 stops
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11:35 am - 6:37 amSLU-ORD
20h 02m3 stops
Tue, Jun 17 - Sat, Jun 21
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9:14 pm - 9:30 amORD-SLU
35h 16m3 stops
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4:35 pm - 9:56 pmSLU-ORD
30h 21m2 stops
Mon, Jun 9 - Mon, Jun 16
Useful Info

Good to know

Low seasonAugust
High seasonJanuary
Cheapest flight$684
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly and prices are also 38% lower on average.
Flight from Chicago to Castries

When to book flights from Chicago to Castries

Are your dates flexible? Find out the best times to travel from Chicago to Castries based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago to Castries flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Castries?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Castries was $684 for a round-trip ticket.

  • Do I need a passport to fly between Chicago and Castries?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Chicago and on arrival in Castries.

  • Which aircraft models fly most regularly from Chicago to Castries?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Chicago to Castries?

    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 Chicago to Castries.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to Castries?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Castries from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to Castries?

    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 Castries with an airline and back to Chicago with another airline. Booking your flights between Chicago and SLU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to Castries?

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

Top airline flying from Chicago to Castries

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Castries. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to Castries? 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.
7.2
American AirlinesOverall score based on 10000 reviews
7.2Comfort
7.5Boarding
6.5Food
8.0Crew
6.9Entertainment
Airline reviews

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

6.0 GoodAnonymous, Mar 2025ORD - CLT
Read more American Airlines reviews

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

This particular flight wasn't very full at the back, so there were three seats available for spreading out and getting relatively comfortable

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

Everything you need to know for your flight from Chicago to Castries

Information on your arrival and departure airports

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