HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sierra Leone

$541+ Cheap flights from Illinois to Sierra Leone

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — FNA
Jan 18 — Jan 251
Sun 1/18
Sun 1/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Sierra Leone with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Sierra Leone

Cheapest flights from Illinois to Sierra Leone
Explore the most affordable flight options available from Illinois to Sierra Leone. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 19, 2025.

This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:30 pmORD - FNA
2 stops27h 50mBritish Airways
Fri 1/95:20 amFNA - ORD
2 stops40h 05mBritish Airways
Deal found 12/17$2,434
This Ovago deal was found by Cheapflights users on 12/18. 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 12/274:53 pmSTL - FNA
3 stops29h 27mBritish Airways
Fri 1/165:20 amFNA - STL
3 stops40h 54mBritish Airways
Deal found 12/18$2,526
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:30 pmORD - FNA
2 stops27h 50mBritish Airways
Sat 1/105:20 amFNA - ORD
2 stops40h 05mBritish Airways
Deal found 12/17$2,534
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/228:40 pmORD - FNA
2 stops25h 40mBritish Airways
Wed 1/75:20 amFNA - ORD
2 stops41h 40mBritish Airways
Deal found 12/17$2,559
This Ovago deal was found by Cheapflights users on 12/17. 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.
Sun 12/219:45 amORD - FNA
2 stops25h 00mEthiopian Air
Tue 12/238:05 amFNA - ORD
3 stops29h 35mEthiopian Air
Deal found 12/17$2,641
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:40 pmORD - FNA
2 stops25h 40mBritish Airways
Fri 1/95:20 amFNA - ORD
2 stops40h 05mBritish Airways
Deal found 12/17$2,659
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:30 pmORD - FNA
2 stops27h 50mBritish Airways
Sat 1/105:20 amFNA - ORD
2 stops40h 05mBritish Airways
Deal found 12/17$2,759
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:30 pmORD - FNA
2 stops27h 50mBritish Airways
Wed 1/75:20 amFNA - ORD
2 stops41h 40mBritish Airways
Deal found 12/17$2,784
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:30 pmORD - FNA
2 stops27h 50mBritish Airways
Thu 1/85:20 amFNA - ORD
2 stops41h 40mBritish Airways
Deal found 12/17$2,884
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Mon 12/229:15 pmORD - FNA
2 stops39h 25mUnited Airlines
Wed 1/78:10 pmFNA - ORD
3 stops43h 33mUnited Airlines
Deal found 12/17$2,975
This Ovago deal was found by Cheapflights users on 12/17. 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.
Sun 12/219:45 amORD - FNA
2 stops25h 00mEthiopian Air
Thu 1/88:05 amFNA - ORD
3 stops29h 35mEthiopian Air
Deal found 12/17$3,246
This Ovago deal was found by Cheapflights users on 12/17. 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.
Sun 12/219:45 amORD - FNA
2 stops25h 00mEthiopian Air
Tue 1/69:00 amFNA - ORD
3 stops28h 40mEthiopian Air
Deal found 12/17$3,263

Find flight deals from Illinois to Sierra Leone

Keep the following information in mind while searching for Illinois to Sierra Leone flight deals. Data was last updated December 19, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,423
(Booking.com)

One-way from

$541
(Ovago)
Provider with most accurate pricing for Chicago (CHI)-Freetown Lungi Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Freetown Lungi Intl flights.
Search Deals
From Illinois to Sierra Leone
Search Deals
One-way flight from Illinois to Sierra Leone
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Sierra Leone 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 December 19, 2025.
Use the filters below to find and compare flights from Illinois to Sierra Leone that are best for you.

Fly from

Illinois

Fly to

Sierra Leone

Route

Depart

Return

Price

ChicagoFreetown

ORD - FNA

ORDFNA

Chicago O'Hare Intl

Mon 2/9

7:15 am-6:40 pm

2 stops29h 25m

Freetown Lungi Intl

Mon 3/2

7:45 pm-4:20 pm

3 stops26h 35m

$1,423

ChicagoFreetown

ORD - FNA

ORDFNA

Chicago O'Hare Intl

Mon 2/9

5:55 pm-6:40 pm

1 stop18h 45m

Freetown Lungi Intl

Mon 3/2

7:45 pm-12:10 pm

2 stops22h 25m

$1,443

ChicagoFreetown

ORD - FNA

ORDFNA

Chicago O'Hare Intl

Sun 4/19

10:15 am-4:45 pm

2 stops25h 30m

Freetown Lungi Intl

Mon 5/4

9:00 am-2:12 pm

4 stops34h 12m

$1,640

ChicagoFreetown

ORD - FNA

ORDFNA

Chicago O'Hare Intl

Wed 1/14

5:55 pm-6:25 pm

1 stop18h 30m

Freetown Lungi Intl

Sat 1/31

8:10 pm-2:25 pm

3 stops48h 15m

$1,643

St. LouisFreetown

STL - FNA

STLFNA

Lambert-St Louis

Mon 2/2

8:05 am-6:40 pm

2 stops28h 35m

Freetown Lungi Intl

Sun 2/22

8:10 pm-9:40 pm

3 stops31h 30m

$1,699

ChicagoFreetown

ORD - FNA

ORDFNA

Chicago O'Hare Intl

Wed 1/14

6:50 pm-6:40 pm

2 stops41h 50m

Freetown Lungi Intl

Sat 1/31

8:10 pm-12:10 pm

1 stop22h 00m

$1,771

ChicagoFreetown

ORD - FNA

ORDFNA

Chicago O'Hare Intl

Mon 2/9

1:00 pm-4:45 pm

3 stops45h 45m

Freetown Lungi Intl

Mon 3/2

9:00 am-2:20 pm

4 stops35h 20m

$1,936

ChicagoFreetown

ORD - FNA

ORDFNA

Chicago O'Hare Intl

Sun 4/19

8:10 pm-4:25 am

2 stops51h 15m

Freetown Lungi Intl

Sun 5/3

1:20 am-9:40 am

2 stops37h 20m

$1,948

St. LouisFreetown

STL - FNA

STLFNA

Lambert-St Louis

Mon 2/2

4:49 pm-12:20 am

3 stops25h 31m

Freetown Lungi Intl

Sat 2/21

1:20 am-10:59 pm

3 stops27h 39m

$2,069

ChicagoFreetown

ORD - FNA

ORDFNA

Chicago O'Hare Intl

Mon 5/11

3:15 pm-4:25 am

2 stops32h 10m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from Illinois to Sierra Leone

Have a flexible travel schedule? Discover the best time to fly to Sierra Leone from Illinois 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 Illinois to Sierra Leone
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 Illinois to Sierra Leone. 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 Illinois to Sierra Leone?

    Departing from Illinois to Sierra Leone will take you 18h 30m. Airlines will cover a distance of 5033 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Sierra Leone 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Sierra Leone

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Cairo flights
John F Kennedy Intl to Casablanca flights
John F Kennedy Intl to Accra flights
John F Kennedy Intl to Lagos flights
Newark to Cairo flights
Los Angeles to Cairo flights
Dulles Intl to Cairo flights
LaGuardia to Cairo flights
Dulles Intl to Lagos flights
Dulles Intl to Accra flights
John F Kennedy Intl to Jomo Kenyatta Intl flights
Newark to Lagos flights
Newark to Marrakech flights
Dulles Intl to Casablanca flights
John F Kennedy Intl to Marrakech flights
Newark to Casablanca flights
Newark to OR Tambo flights
John F Kennedy Intl to Cape Town flights
Hobby to Lagos flights
O'Hare Intl to Cairo flights
San Francisco to Cairo flights
Atlanta to Lagos flights
Newark to Accra flights
Boston to Casablanca flights
Dallas/Fort Worth to Lagos flights
John F Kennedy Intl to Dakar flights
Reagan-National to Cairo flights
LaGuardia to Casablanca flights
Dallas/Fort Worth to Cairo flights
John F Kennedy Intl to OR Tambo flights
Baltimore to Lagos flights
Newark to Cape Town flights
Baltimore to Cairo flights
Reagan-National to Lagos flights
Dallas/Fort Worth to Jomo Kenyatta Intl flights
LaGuardia to Lagos flights
George Bush Intcntl to Lagos flights
Boston to Cairo flights
Hobby to Cairo flights
Newark to Jomo Kenyatta Intl flights
LaGuardia to Marrakech flights
Seattle to Jomo Kenyatta Intl flights
Seattle to Cairo flights
Miami to Cairo flights
Dulles Intl to Jomo Kenyatta Intl flights
Reagan-National to Casablanca flights
LaGuardia to Jomo Kenyatta Intl flights
LaGuardia to Accra flights
LaGuardia to Cape Town flights
O'Hare Intl to Accra flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2025 Cheapflights