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$1,743+ Cheap flights from Sierra Leone to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
FNA — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Sierra Leone to Illinois

Keep the following information in mind while searching for Sierra Leone to Illinois flight deals. Data was last updated September 15, 2025.

Round-trip from

$1,743
(Brussels Airlines)
From Sierra Leone to Illinois
Search Deals

Find flight deals from Sierra Leone to Illinois

Best flights from Sierra Leone to Illinois
Discover carefully curated flight deals from Sierra Leone to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

This Brussels Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:45 pmFNA - ORD
2 stops22h 25mBrussels Airlines
Mon 3/165:55 pmORD - FNA
1 stop19h 45mBrussels Airlines
Deal found 9/12$1,743
This Air Canada deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:45 pmFNA - ORD
3 stops29h 15mAir Canada
Mon 3/163:35 pmORD - FNA
2 stops22h 05mAir Canada
Deal found 9/12$1,743
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:45 pmFNA - ORD
2 stops22h 25mUnited Airlines
Mon 3/163:45 pmORD - FNA
2 stops21h 55mUnited Airlines
Deal found 9/12$1,747
This Ethiopian Air deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ethiopian Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/129:00 amFNA - ORD
3 stops28h 40mEthiopian Air
Mon 3/161:12 pmORD - FNA
3 stops46h 33mEthiopian Air
Deal found 9/12$2,352

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sierra Leone to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Sierra Leone to Illinois that are best for you.

Fly from

Sierra Leone

Fly to

Illinois

Route

Depart

Return

Price

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Thu 3/12

7:45 pm-1:10 pm

2 stops22h 25m

Chicago O'Hare Intl

Mon 3/16

5:55 pm-6:40 pm

1 stop19h 45m

$1,743

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Thu 3/12

7:45 pm-8:00 pm

3 stops29h 15m

Chicago O'Hare Intl

Mon 3/16

3:35 pm-6:40 pm

2 stops22h 05m

$1,743

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Thu 3/12

7:45 pm-1:10 pm

2 stops22h 25m

Chicago O'Hare Intl

Mon 3/16

3:45 pm-6:40 pm

2 stops21h 55m

$1,747

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Thu 3/12

9:00 am-8:40 am

3 stops28h 40m

Chicago O'Hare Intl

Mon 3/16

1:12 pm-4:45 pm

3 stops46h 33m

$2,352

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Best time to book a flight from Sierra Leone to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Sierra Leone with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sierra Leone to Illinois
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Sierra Leone to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Sierra Leone to Illinois?

    There are many flights that can get you from Sierra Leone to Illinois in 22h 25m. Fly via Brussels Airlines or Air Canada to get the fastest option. Airlines will cover a distance of 5033 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Sierra Leone to Illinois that include hotel bookings?

    Yes. In addition to deals on Sierra Leone to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sierra Leone to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sierra Leone to Illinois.

  • Can I find deals for business class flights from Sierra Leone to Illinois?

    Yes. Cheapflights offers flight deals from Sierra Leone to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sierra Leone to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Sierra Leone to Illinois (average of $245). Flying from Sierra Leone to Illinois in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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