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$1,153+ Cheap flights from Sierra Leone to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
FNA — ORD
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Sierra Leone to Illinois

Cheapest flights from Sierra Leone to Illinois
Explore the most affordable flight options available from Sierra Leone to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Ethiopian Air deal was found by Cheapflights users on 1/27. 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.
Sat 4/258:05 am
FNA
-
ORD
3 stops29h 10m
Ethiopian Air
Sat 5/210:15 am
ORD
-
FNA
2 stops25h 30m
Ethiopian Air
Deal found 1/27$1,841
This Ovago deal was found by Cheapflights users on 1/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:05 am
FNA
-
ORD
2 stops32h 55m
Multiple Airlines
Sat 5/22:20 pm
ORD
-
FNA
2 stops22h 05m
Multiple Airlines
Deal found 1/27$2,056
This BusinessClass deal was found by Cheapflights users on 1/27. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/138:05 am
FNA
-
ORD
2 stops34h 05m
Multiple Airlines
Fri 3/205:55 pm
ORD
-
FNA
1 stop19h 45m
Multiple Airlines
Deal found 1/27$2,288
This Ovago deal was found by Cheapflights users on 1/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/135:20 am
FNA
-
ORD
2 stops39h 54m
British Airways
Fri 3/206:40 pm
ORD
-
FNA
2 stops28h 40m
British Airways
Deal found 1/27$2,311

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,841
(Ethiopian Air)

One-way from

$1,153
(BusinessClass)
Provider with most accurate pricing for Freetown Lungi Intl-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Freetown Lungi Intl-Chicago (CHI) flights.
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From Sierra Leone to Illinois
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One-way flight from Sierra Leone to Illinois
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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 January 29, 2026.
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

Sat 4/25

8:05 am-8:15 am

3 stops29h 10m

Chicago O'Hare Intl

Sat 5/2

10:15 am-4:45 pm

2 stops25h 30m

$1,841

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Sat 4/25

8:05 am-12:00 pm

2 stops32h 55m

Chicago O'Hare Intl

Sat 5/2

5:55 pm-5:25 pm

1 stop18h 30m

$2,085

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Fri 3/13

8:05 am-1:10 pm

2 stops34h 05m

Chicago O'Hare Intl

Fri 3/20

5:55 pm-6:40 pm

1 stop19h 45m

$2,288

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Sat 4/25

9:20 am-12:26 pm

3 stops32h 06m

$1,153

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Fri 3/13

6:30 pm-5:10 pm

3 stops51h 40m

$1,283

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Fri 3/13

5:20 am-11:25 am

2 stops35h 05m

$1,312

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Sat 4/25

8:05 am-3:45 pm

2 stops36h 40m

$1,681

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Sat 4/25

8:05 am-8:15 am

4 stops29h 10m

$1,833

FreetownChicago

FNA - ORD

FNAORD

Freetown Lungi Intl

Fri 3/13

8:05 am-8:40 am

4 stops29h 35m

$1,833

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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 29h 10m. Fly via Ethiopian Air to get the fastest option. Airlines will cover a distance of 5033 mi.

  • 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.

See more FAQs

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Alternative routes for Sierra Leone to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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