$1,560+ Cheap flights from Seattle (SEA) to Sierra Leone
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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FNA
May 9 — May 161
Round-trip
1 adult, Economy
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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
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Cheapest
Best
Last-minute
Cheapest flights from Seattle to Sierra LeoneExplore the most affordable flight options available from Seattle to Sierra Leone. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.
Explore the most affordable flight options available from Seattle to Sierra Leone. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.
This Mytrip deal was found by Cheapflights users on 4/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:00 am
SEA
- FNA
2 stops26h 15m
Multiple Airlines
Wed 10/216:45 pm
FNA
- SEA
3 stops33h 19m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$1,560
This Mytrip deal was found by Cheapflights users on 4/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:40 am
SEA
- FNA
3 stops28h 35m
Air Canada
Wed 10/216:45 pm
FNA
- SEA
3 stops33h 19m
Air Canada
Deal found 4/9![Air Canada logo]()
$1,565
This United Airlines deal was found by Cheapflights users on 4/9. 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.
Wed 9/307:30 am
SEA
- FNA
2 stops26h 45m
United Airlines
Wed 10/216:45 pm
FNA
- SEA
3 stops32h 25m
United Airlines
Deal found 4/9![United Airlines logo]()
$1,568
This KAYAK deal was found by Cheapflights users on 4/9. 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.
Wed 9/305:40 am
SEA
- FNA
3 stops28h 35m
Brussels Airlines
Wed 10/216:45 pm
FNA
- SEA
3 stops32h 25m
Brussels Airlines
Deal found 4/9![Brussels Airlines logo]()
$1,594
This KAYAK deal was found by Cheapflights users on 4/7. 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.
Thu 10/111:00 am
SEA
- FNA
2 stops23h 25m
Brussels Airlines
Sat 10/318:10 pm
FNA
- SEA
3 stops30h 49m
Brussels Airlines
Deal found 4/7![Brussels Airlines logo]()
$1,660
This Gurufare deal was found by Cheapflights users on 4/7. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:40 am
SEA
- FNA
3 stops28h 45m
SWISS
Sat 10/318:10 pm
FNA
- SEA
3 stops34h 19m
SWISS
Deal found 4/7![SWISS logo]()
$1,710
This oojo deal was found by Cheapflights users on 4/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:40 pm
SEA
- FNA
3 stops36h 05m
Ethiopian Air
Mon 5/118:05 am
FNA
- SEA
2 stops32h 53m
Ethiopian Air
Deal found 4/6![Ethiopian Air logo]()
$1,712
This FlightHub deal was found by Cheapflights users on 4/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:38 pm
SEA
- FNA
3 stops35h 47m
Multiple Airlines
Mon 5/118:05 am
FNA
- SEA
3 stops32h 53m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$1,738
Best flights from Seattle to Sierra LeoneDiscover carefully curated flight deals from Seattle to Sierra Leone that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
Discover carefully curated flight deals from Seattle to Sierra Leone that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
This Mytrip deal was found by Cheapflights users on 4/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:40 am
SEA
- FNA
3 stops28h 35m
Air Canada
Wed 10/216:45 pm
FNA
- SEA
3 stops33h 19m
Air Canada
Deal found 4/9![Air Canada logo]()
$1,565
This United Airlines deal was found by Cheapflights users on 4/9. 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.
Wed 9/307:30 am
SEA
- FNA
2 stops26h 45m
United Airlines
Wed 10/216:45 pm
FNA
- SEA
3 stops32h 25m
United Airlines
Deal found 4/9![United Airlines logo]()
$1,568
This KAYAK deal was found by Cheapflights users on 4/9. 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.
Wed 9/305:40 am
SEA
- FNA
3 stops28h 35m
Brussels Airlines
Wed 10/216:45 pm
FNA
- SEA
3 stops32h 25m
Brussels Airlines
Deal found 4/9![Brussels Airlines logo]()
$1,594
This oojo deal was found by Cheapflights users on 4/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:38 pm
SEA
- FNA
2 stops35h 47m
Ethiopian Air
Mon 5/118:05 am
FNA
- SEA
2 stops32h 53m
Ethiopian Air
Deal found 4/6![Ethiopian Air logo]()
$1,720
This FlightHub deal was found by Cheapflights users on 4/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:38 pm
SEA
- FNA
3 stops35h 47m
Multiple Airlines
Mon 5/118:05 am
FNA
- SEA
3 stops32h 53m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$1,738
This BusinessClass deal was found by Cheapflights users on 4/7. 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.
Mon 6/110:45 am
SEA
- FNA
3 stops47h 40m
SWISS
Sun 6/286:45 pm
FNA
- SEA
3 stops26h 55m
SWISS
Deal found 4/7![SWISS logo]()
$1,804
This BusinessClass deal was found by Cheapflights users on 4/9. 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.
Thu 10/17:00 am
SEA
- FNA
2 stops27h 25m
Brussels Airlines
Sat 10/318:10 pm
FNA
- SEA
3 stops30h 49m
Brussels Airlines
Deal found 4/9![Brussels Airlines logo]()
$1,702
This United Airlines deal was found by Cheapflights users on 4/6. 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 6/297:30 am
SEA
- FNA
2 stops26h 55m
United Airlines
Sun 8/236:45 pm
FNA
- SEA
3 stops32h 18m
United Airlines
Deal found 4/6![United Airlines logo]()
$1,770
This BusinessClass deal was found by Cheapflights users on 4/6. 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.
Tue 6/2310:45 am
SEA
- FNA
3 stops47h 30m
SWISS
Fri 7/316:45 pm
FNA
- SEA
3 stops26h 50m
SWISS
Deal found 4/6![SWISS logo]()
$1,923
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Wed 6/2411:20 pm
SEA
- FNA
2 stops35h 05m
United Airlines
Sun 8/236:45 pm
FNA
- SEA
3 stops32h 18m
United Airlines
Deal found 4/6![United Airlines logo]()
$1,770
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Tue 6/237:30 am
SEA
- FNA
2 stops26h 55m
United Airlines
Sun 8/236:45 pm
FNA
- SEA
3 stops32h 18m
United Airlines
Deal found 4/6![United Airlines logo]()
$1,770
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Fri 6/266:30 am
SEA
- FNA
3 stops51h 55m
United Airlines
Tue 8/256:45 pm
FNA
- SEA
3 stops34h 57m
United Airlines
Deal found 4/6![United Airlines logo]()
$1,786
Last-minute flights from Seattle to Sierra LeoneDiscover last-minute flight deals from Seattle to Sierra Leone. Data last updated April 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Sierra Leone. Data last updated April 9, 2026 and is based on user searches.
This BusinessClass deal was found by Cheapflights users on 4/8. 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.
Sat 4/119:38 pm
SEA
- FNA
3 stops35h 47m
Multiple Airlines
Fri 4/178:05 am
FNA
- SEA
3 stops33h 24m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$6,733
This oojo deal was found by Cheapflights users on 4/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/119:40 pm
SEA
- FNA
3 stops36h 05m
Ethiopian Air
Fri 4/178:05 am
FNA
- SEA
2 stops33h 24m
Ethiopian Air
Deal found 4/7![Ethiopian Air logo]()
$6,795
This KAYAK deal was found by Cheapflights users on 4/9. 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 4/138:00 am
SEA
- FNA
2 stops25h 25m
Multiple Airlines
Wed 4/156:45 pm
FNA
- SEA
3 stops33h 08m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$2,558
This oojo deal was found by Cheapflights users on 4/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:40 pm
SEA
- FNA
3 stops36h 05m
Ethiopian Air
Mon 5/118:05 am
FNA
- SEA
2 stops32h 53m
Ethiopian Air
Deal found 4/6![Ethiopian Air logo]()
$1,712
This FlightHub deal was found by Cheapflights users on 4/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:38 pm
SEA
- FNA
3 stops35h 47m
Multiple Airlines
Mon 5/118:05 am
FNA
- SEA
3 stops32h 53m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$1,738
Find flight deals from Seattle to Sierra Leone
Keep the following information in mind while searching for Seattle to Sierra Leone flight deals. Data was last updated April 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,560 (Mytrip) |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle 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 April 9, 2026.
Use the filters below to find and compare flights from Seattle to Sierra Leone that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Wed 9/30
5:40 am-5:15 pm
3 stops28h 35m
Freetown Lungi Intl
Wed 10/21
6:45 pm-9:04 pm
3 stops33h 19m
$1,565
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Wed 9/30
7:30 am-5:15 pm
2 stops26h 45m
Freetown Lungi Intl
Wed 10/21
6:45 pm-8:10 pm
3 stops32h 25m
$1,568
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Wed 9/30
5:40 am-5:15 pm
3 stops28h 35m
Freetown Lungi Intl
Wed 10/21
6:45 pm-8:10 pm
3 stops32h 25m
$1,594
Quickest round-trip
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Thu 10/1
7:00 am-5:25 pm
2 stops27h 25m
Freetown Lungi Intl
Sat 10/31
8:10 pm-7:59 pm
3 stops30h 49m
$1,702
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Mon 4/20
9:38 pm-4:25 pm
2 stops35h 47m
Freetown Lungi Intl
Mon 5/11
8:05 am-9:58 am
2 stops32h 53m
$1,720
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Mon 4/20
9:38 pm-4:25 pm
3 stops35h 47m
Freetown Lungi Intl
Mon 5/11
8:05 am-9:58 am
3 stops32h 53m
$1,738
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Mon 6/29
7:30 am-5:25 pm
2 stops26h 55m
Freetown Lungi Intl
Sun 8/23
6:45 pm-8:03 pm
3 stops32h 18m
$1,770
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Wed 6/24
11:20 pm-5:25 pm
2 stops35h 05m
Freetown Lungi Intl
Sun 8/23
6:45 pm-8:03 pm
3 stops32h 18m
$1,770
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Tue 6/23
7:30 am-5:25 pm
2 stops26h 55m
Freetown Lungi Intl
Sun 8/23
6:45 pm-8:03 pm
3 stops32h 18m
$1,770
SeattleFreetown
SEA - FNA
SEAFNA
Seattle/Tacoma Intl
Fri 6/26
6:30 am-5:25 pm
3 stops51h 55m
Freetown Lungi Intl
Tue 8/25
6:45 pm-10:42 pm
3 stops34h 57m
$1,786
Showing 1-10 of 12 resultsSorted by cheapest first
Best time to book a flight from Seattle to Sierra Leone
Have a flexible travel schedule? Discover the best time to fly to Sierra Leone from Seattle with our price prediction graph.
SEA-FNA
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 Seattle to Sierra Leone
SEA-SL0
SEA-FNA
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Sierra Leone
Get insights into the airlines that provide service to Sierra Leone. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sierra Leone. Reviews last updated April 9, 2026.
Get a feel of what it's like to fly with United Airlines from Seattle to Sierra Leone by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Boarding
7.7
Crew
8.1
Comfort
7.3
Entertainment
7.1
Food
6.6
Overall
7.4
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Related info for your journey
Find useful and relevant information for your journey from Seattle to Sierra Leone. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Sierra Leone
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Complete your trip
Complete your trip to Sierra Leone by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Seattle to Sierra Leone, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Sierra Leone flights
Browse other Seattle and Sierra Leone flight options. Last updated on April 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Seattle to Sierra Leone
Discover the top airline that operate flights from Seattle to Sierra Leone. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,551 | Average$1,722 | FlexibilityNo cancel fee | On-time69% |