$938 Find Cheap Flights from Boston to Sierra Leone

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Sierra Leone departing on 6/21. 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
1 adult, Economy, 0 bags

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Book Cheap Boston to Sierra Leone Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Sierra Leone 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Sierra Leone

Tue, Aug 11 - Tue, Sep 8
United Airlines Logo
7:00 pm - 5:15 pm
BOS
-
FNA
42h 15m
2 stops
United Airlines Logo
6:45 pm - 11:59 pm
FNA
-
BOS
33h 14m
3 stops
$1,595United Airlines
Fri, Oct 30 - Tue, Nov 3
United Airlines Logo
8:10 pm - 6:40 pm
BOS
-
FNA
42h 30m
2 stops
United Airlines Logo
8:10 pm - 8:22 pm
FNA
-
BOS
29h 12m
3 stops
$1,597United Airlines
Tue, Aug 11 - Tue, Sep 8
Brussels Airlines Logo
3:35 pm - 5:15 pm
BOS
-
FNA
45h 40m
3 stops
Brussels Airlines Logo
6:45 pm - 5:40 pm
FNA
-
BOS
26h 55m
3 stops
$1,603Brussels Airlines
Fri, Oct 30 - Tue, Nov 3
United Airlines Logo
8:10 pm - 6:40 pm
BOS
-
FNA
42h 30m
2 stops
United Airlines Logo
8:10 pm - 11:54 pm
FNA
-
BOS
32h 44m
3 stops
$1,625United Airlines
Fri, Oct 30 - Tue, Nov 3
United Airlines Logo
8:10 pm - 6:40 pm
BOS
-
FNA
42h 30m
2 stops
United Airlines Logo
8:10 pm - 11:54 pm
FNA
-
BOS
32h 44m
3 stops
$1,708United Airlines
Wed, Aug 5 - Mon, Aug 17
United Airlines Logo
3:08 pm - 5:15 pm
BOS
-
FNA
22h 07m
2 stops
United Airlines Logo
6:35 pm - 8:17 am
FNA
-
BOS
41h 42m
3 stops
$1,791United Airlines
Tue, Aug 11 - Tue, Sep 8
Ethiopian Air Logo
5:45 am - 4:45 pm
BOS
-
FNA
31h 00m
3 stops
Ethiopian Air Logo
8:05 am - 9:48 am
FNA
-
BOS
29h 43m
3 stops
$1,859Ethiopian Air
Tue, Aug 11 - Tue, Sep 8
Ethiopian Air Logo
5:45 am - 4:45 pm
BOS
-
FNA
31h 00m
3 stops
Ethiopian Air Logo
9:00 am - 2:50 pm
FNA
-
BOS
33h 50m
4 stops
$1,877Ethiopian Air
Tue, Aug 11 - Tue, Sep 8
Ethiopian Air Logo
5:45 am - 4:45 pm
BOS
-
FNA
31h 00m
3 stops
Ethiopian Air Logo
9:00 am - 11:59 pm
FNA
-
BOS
42h 59m
4 stops
$1,886Ethiopian Air
Sat, Jun 20 - Fri, Jun 26
United Airlines Logo
2:40 pm - 5:25 pm
BOS
-
FNA
22h 45m
2 stops
United Airlines Logo
6:45 pm - 9:51 am
FNA
-
BOS
43h 06m
3 stops
$1,921United Airlines
Booking Insights

KAYAK's insights & trends for Boston to Sierra Leone flights

Get data-powered insights and trends into flights from Boston to Sierra Leone to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Boston to Sierra Leone?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Sierra Leone, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Sierra Leone is August, when tickets cost $0 (return) on average. On the other hand, the most expensive months are January and July, when the average cost of round-trip tickets is $1,614 and $1,435 respectively.

Good to know

Low seasonMarch
Cheapest flight$938
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Boston to Freetown

FAQs - booking Sierra Leone flights

  • How does KAYAK find such low prices on flights from Boston to Sierra Leone?

    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 Boston to Sierra Leone.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boston to Sierra Leone 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 Boston to Sierra Leone?

    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 from Boston to Sierra Leone with an airline and back with another airline.

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

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

Reviews of the top 3 airlines serving from Boston to Sierra Leone

 
Need help choosing which airline to fly with from Boston to Sierra Leone? 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.
7.4
Turkish AirlinesOverall score based on 4385 reviews
7.5Entertainment
7.3Comfort
7.8Crew
7.5Food
7.3Boarding
Airline reviews

Seat assignments for family traveling with 2 children. Loud crowd during sleep time

4.0 OkayAnonymous, May 2026
LAX - IST
Read more Turkish Airlines reviews

Seat assignments for family traveling with 2 children. Loud crowd during sleep time

It was crowded… the bathrooms dirty and smelly. The seats have been made even smaller.

delayed to take off from detroit by 3 hours lost baggage in istanbul and now in venice without baggage

Seats were very tight with poor legroom - and I am average height. During the 12 hour flight, tiny paper cups of drinks we're only offered during the super and breakfast services, with the crew nowhere to be seen in between. One of the bathrooms was out of order, leading to long lines waiting to use the remaining two available to the economy class passengers.

short flight but we still got a very nice lunch and the crew did an excellent job in taking care of us

For that price on Business class, I expected to have the pod seats. These were configured as 2/3/2 and my seat mate talked half the flight with a friend across the isle, loudly. Very uncouth.

The ground crew members at check in counter were courteous. The boarding was seamless. Flight departed as scheduled. Service on board was great

Very comfortable in business class. Excellent service. Good food. Smooth trip.

The seats seems abit small and the reclining is too much, the seat in front of me came back too much and made it uncomfortable for me.

As a first time flyer with Turkish Airlines. My experience was very good due to the factor that there were to many passengers on the my first flight compared to my connecting flight. However, I know that nothing is perfect and all companies are trying to accommodate their passengers to the best way possible. I will always say, a FEW INCHES will go LONG WAY. That's something all airliners should consider, and not only the money aspect!!! A long time commitment is better than one time service! Thank you

We had a delay, but thankfully I made it to my connection. Overall it went smooth

The flight had a delay but I made it to my connection. Flight was smooth overall

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

This flight is a quick way to get to Chicago, but a bit expensive.

Very comfortable seating and the Flight staff were very attentive. The premium economy section that I was seated in was very clean, updated, and well appointed. I would highly recommend flying United Airlines as this experience was better than the Japan Airlines business class that I flew several months ago.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

Everything was better but france airlines more better than them

Good leg room for people of all sizes. Pleasent crew.

WE didint profit of food , but for the other think all was good

Spacious and clean aircraft. Good food. Economy will always be squeezed but thankfully I had an aisle seat for stretching exercises. Good selection of movies, particularly Spike Lee joint.

Unfriendly, 8 hours delayed, no lounge access even flying business. Don’t fly Brussels

Flight from London was delayed so missed the connecting flight. Taking 2 days to get to destination which should have only taken a few hours.

Too cramped up for the better seats I paid for.

I didn’t like my seat in my return flight from Montreal to Orlando at all; considering I paid extra for better seats. That middle seat was cramped up way too much.

Suitcase didn’t arrive to Stockholm. Chairs y comfy and not even water is offered

Bad baggage and people management at boarding forcing me to dispatch my bad despite being the perfect size and respecting everything perfectly, whereas many did not and many free empty spots on the plane as usual… making me loose time and my planned bus at arrival to go to Geneva. Costing me 100 euros extra! So Brussels airlines needs to refund me

Everything you need to know for your flight from Boston to Sierra Leone

Information on your arrival and departure airports