$1,640 Find Cheap Flights from Boston to Sierra Leone

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Sierra Leone departing on 7/27. 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

Mon, Jul 27 - Wed, Sep 2
United Airlines Logo
9:25 am - 5:25 pm
BOS
-
FNA
28h 00m
2 stops
United Airlines Logo
6:45 pm - 4:48 pm
FNA
-
BOS
26h 03m
3 stops
$1,640United Airlines
Tue, Jul 28 - Wed, Sep 2
United Airlines Logo
8:15 pm - 5:15 pm
BOS
-
FNA
41h 00m
2 stops
United Airlines Logo
6:45 pm - 7:22 pm
FNA
-
BOS
28h 37m
3 stops
$1,646United Airlines
Thu, Jul 30 - Sun, Aug 30
Multiple Airlines Logo
5:01 am - 4:25 am
BOS
-
FNA
19h 24m
2 stops
Multiple Airlines Logo
5:25 am - 9:14 am
FNA
-
BOS
31h 49m
2 stops
$1,702Multiple Airlines
Thu, Jul 30 - Wed, Sep 2
United Airlines Logo
10:58 am - 5:25 pm
BOS
-
FNA
26h 27m
2 stops
United Airlines Logo
6:45 pm - 5:52 pm
FNA
-
BOS
27h 07m
3 stops
$1,751United Airlines
Fri, Jul 31 - Wed, Sep 2
United Airlines Logo
8:15 pm - 5:25 pm
BOS
-
FNA
41h 10m
2 stops
United Airlines Logo
6:45 pm - 4:48 pm
FNA
-
BOS
26h 03m
3 stops
$1,826United Airlines
Tue, Jul 28 - Wed, Sep 2
Ethiopian Air Logo
5:45 am - 4:45 pm
BOS
-
FNA
31h 00m
3 stops
Ethiopian Air Logo
8:05 am - 11:59 pm
FNA
-
BOS
19h 54m
3 stops
$1,835Ethiopian Air
Mon, Jul 27 - Tue, Sep 1
United Airlines Logo
2:15 pm - 5:25 pm
BOS
-
FNA
23h 10m
2 stops
United Airlines Logo
6:45 pm - 4:42 pm
FNA
-
BOS
25h 57m
3 stops
$1,863United Airlines
Tue, Jul 28 - Tue, Sep 1
United Airlines Logo
8:15 pm - 5:15 pm
BOS
-
FNA
41h 00m
2 stops
United Airlines Logo
6:45 pm - 4:42 pm
FNA
-
BOS
25h 57m
3 stops
$1,869United Airlines
Thu, Jul 30 - Sun, Aug 30
Multiple Airlines Logo
5:45 am - 5:25 pm
BOS
-
FNA
31h 40m
2 stops
Multiple Airlines Logo
6:45 pm - 2:41 pm
FNA
-
BOS
23h 56m
3 stops
$1,906Multiple Airlines
Fri, Jul 31 - Wed, Sep 2
Ethiopian Air Logo
5:45 am - 4:45 pm
BOS
-
FNA
31h 00m
3 stops
Ethiopian Air Logo
8:05 am - 11:59 pm
FNA
-
BOS
19h 54m
3 stops
$1,935Ethiopian Air
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 September, when tickets cost $0 (return) on average. On the other hand, the most expensive months are August and January, when the average cost of round-trip tickets is $1,615 and $1,614 respectively.

Good to know

Low seasonMarch
Cheapest flight$1,640
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 7% 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 4414 reviews
7.5Food
7.5Entertainment
7.3Comfort
7.8Crew
7.3Boarding
Airline reviews

Three screaming and crying children in business class made it very difficult to rest. The crew made no attempt to address the situation. I might as well have saved the money and flown economy. The parents were oblivious to the discomfort their children were causing. The lounge in Istanbul is wonderful, but did not make up for the misery on the flight. My business class seat power outlet was broken and I have a cpap. The crew couldn't fix it or move me to better seat. Fortunately , the passenger in front of me allowed me to plug into his power outlet.

4.0 OkayStephen, Jun 2026
ATL - IST
Read more Turkish Airlines reviews

Three screaming and crying children in business class made it very difficult to rest. The crew made no attempt to address the situation. I might as well have saved the money and flown economy. The parents were oblivious to the discomfort their children were causing. The lounge in Istanbul is wonderful, but did not make up for the misery on the flight. My business class seat power outlet was broken and I have a cpap. The crew couldn't fix it or move me to better seat. Fortunately , the passenger in front of me allowed me to plug into his power outlet.

Could have been better. Bag rechecking could have been eliminated. Gate location and direction need to be clearly stated.

I flew Business with my daughter and son. The service, friendliness of the staff and the comfort of the fully flat beds were phenomenal. Would definitely fly Turkish again soon.

Entertainment system is okay, flight attendants were ok. Leg space very narrow, I couldn’t get what I wanted to eat, dinner nor breakfast.

Excellent experience with business class area. Staff was attentive and food was amazing. Only one bathroom for business class which was logistically difficult for the staff while preparing meals. Need to offer fluids with meals. I did not get enough water to drink. But overall I rate it 5 star.

On time, great food, good drink selection! Only down was alcohol-free lounge. Lufthansa had a much better offering!

Be honest of what you sell: This was sold as Business Class on all three legs, while the JetBlue plane didn't even have business class seats, and wanted $164 for extra legroom seats.

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

Awful. Delayed flights, missed connection to Toronto. Hotel vouchers were for already booked hotels x3. Giant waste of my time

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

It was Swiss. Our kosher meals were literally frozen solid and therefore inedible, and the crew didnt care.

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

We used Kayak to reserve our tickets and specifically checked the luggage option which was a more expensive option. When we arrived at the terminal we had to pay an extra $90 per suitcase for the three passengers. This has been a pattern for the past 3 years. Why charge for a more expensive luggage option, and the ticket price not include luggage?

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

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