$390+ Cheap flights from Fort Smith (FSM) to Key Largo, FL
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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
FSM — MIA
Sep 23 — Sep 301
Round-trip
1 adult, Economy
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Find cheap flights from Fort Smith to Key Largo 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 Fort Smith to Key Largo
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Best
Last-minute
One-way
Cheapest flights from Fort Smith to Key LargoExplore the most affordable flight options available from Fort Smith to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 24, 2026.
Explore the most affordable flight options available from Fort Smith to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 24, 2026.
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:11 am -
1 stop7h 28m
Wed 9/94:43 pm -
1 stop6h 52m
Deal found 8/21![American Airlines logo]()
$455
This American Airlines deal was found by Cheapflights users on 8/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:16 pm -
1 stop5h 02m
Sat 10/35:25 am -
1 stop5h 11m
Deal found 8/24![American Airlines logo]()
$478
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:16 pm -
1 stop5h 02m
Sat 9/198:52 am -
2 stops8h 51m
Deal found 8/22![American Airlines logo]()
$525
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:16 pm -
1 stop5h 02m
Mon 9/285:25 am -
1 stop5h 11m
Deal found 8/22![American Airlines logo]()
$545
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am -
1 stop5h 54m
Tue 9/15:40 pm -
1 stop5h 42m
Deal found 8/21![American Airlines logo]()
$557
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:00 am -
1 stop5h 54m
Sat 10/2410:10 am -
1 stop7h 27m
Deal found 8/21![American Airlines logo]()
$578
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:08 pm -
1 stop5h 06m
Mon 10/195:20 am -
1 stop5h 17m
Deal found 8/21![American Airlines logo]()
$599
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:16 pm -
1 stop5h 02m
Wed 10/75:20 am -
1 stop5h 17m
Deal found 8/21![American Airlines logo]()
$601
Best flights from Fort Smith to Key LargoDiscover carefully curated flight deals from Fort Smith to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 24, 2026.
Discover carefully curated flight deals from Fort Smith to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 24, 2026.
This American Airlines deal was found by Cheapflights users on 8/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:16 pm -
1 stop5h 02m
Sat 10/35:25 am -
1 stop5h 11m
Deal found 8/24![American Airlines logo]()
$478
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:16 pm -
1 stop5h 02m
Sat 9/198:52 am -
2 stops8h 51m
Deal found 8/22![American Airlines logo]()
$525
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:16 pm -
1 stop5h 02m
Mon 9/285:25 am -
1 stop5h 11m
Deal found 8/22![American Airlines logo]()
$545
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:08 pm -
1 stop5h 55m
Sat 10/249:54 am -
2 stops10h 18m
Deal found 8/21![American Airlines logo]()
$583
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:08 pm -
1 stop5h 06m
Mon 10/195:20 am -
1 stop5h 17m
Deal found 8/21![American Airlines logo]()
$599
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/246:00 am -
1 stop6h 25m
Mon 11/305:00 am -
1 stop5h 35m
Deal found 8/20![American Airlines logo]()
$656
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:11 am -
1 stop7h 28m
Mon 9/75:20 am -
1 stop5h 21m
Deal found 8/21![American Airlines logo]()
$687
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am -
2 stops8h 40m
Sun 9/64:48 pm -
1 stop8h 09m
Deal found 8/20![American Airlines logo]()
$692
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:08 pm -
1 stop5h 55m
Fri 10/235:20 am -
1 stop5h 17m
Deal found 8/21![American Airlines logo]()
$703
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:03 am -
2 stops9h 12m
Mon 11/305:00 am -
1 stop5h 35m
Deal found 8/20![American Airlines logo]()
$705
Last-minute flights from Fort Smith to Key LargoDiscover last-minute flight deals from Fort Smith to Key Largo. Data last updated August 24, 2026 and is based on user searches.
Discover last-minute flight deals from Fort Smith to Key Largo. Data last updated August 24, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am -
1 stop5h 54m
Tue 9/15:40 pm -
1 stop5h 42m
Deal found 8/21![American Airlines logo]()
$557
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am -
2 stops8h 40m
Sun 9/64:48 pm -
1 stop8h 09m
Deal found 8/20![American Airlines logo]()
$692
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:15 pm -
1 stop5h 43m
Tue 9/85:20 am -
1 stop5h 21m
Deal found 8/20![American Airlines logo]()
$643
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:11 am -
1 stop7h 28m
Wed 9/94:43 pm -
1 stop6h 52m
Deal found 8/21![American Airlines logo]()
$455
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am -
2 stops8h 41m
Tue 9/83:30 pm -
1 stop7h 52m
Deal found 8/22![American Airlines logo]()
$685
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:16 pm -
1 stop5h 02m
Sat 9/198:52 am -
2 stops8h 51m
Deal found 8/22![American Airlines logo]()
$525
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:16 pm -
1 stop5h 43m
Sun 9/205:25 am -
1 stop5h 11m
Deal found 8/20![American Airlines logo]()
$666
This American Airlines deal was found by Cheapflights users on 8/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:16 pm -
1 stop5h 02m
Mon 9/285:25 am -
1 stop5h 11m
Deal found 8/22![American Airlines logo]()
$545
This American Airlines deal was found by Cheapflights users on 8/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:16 pm -
1 stop5h 02m
Sat 10/35:25 am -
1 stop5h 11m
Deal found 8/24![American Airlines logo]()
$478
One-way flights from Fort Smith to Key LargoSearch for one-way flight options from Fort Smith to Key Largo. Find affordable one-way fares based on user searches. Data last updated August 24, 2026.
Search for one-way flight options from Fort Smith to Key Largo. Find affordable one-way fares based on user searches. Data last updated August 24, 2026.
This American Airlines deal was found by Cheapflights users on 8/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:11 am -
1 stop7h 28m
Deal found 8/20![American Airlines logo]()
$390
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:00 am -
2 stops8h 34m
Deal found 8/21![American Airlines logo]()
$520
Find flight deals from Fort Smith to Key Largo
Keep the following information in mind while searching for Fort Smith to Key Largo flight deals. Data was last updated August 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $455 (American Airlines) |
One-way from | $390 (American Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Fort Smith to Key Largo 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 7,457,451 searches. Data last updated August 24, 2026.
Use the filters below to find and compare flights from Fort Smith to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Sun 9/27
5:16 pm-11:18 pm
1 stop5h 02m
Miami
Sat 10/3
5:25 am-9:36 am
1 stop5h 11m
$478
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Sat 9/12
5:16 pm-11:18 pm
1 stop5h 02m
Miami
Sat 9/19
8:52 am-4:43 pm
2 stops8h 51m
$525
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Mon 9/21
5:16 pm-11:18 pm
1 stop5h 02m
Miami
Mon 9/28
5:25 am-9:36 am
1 stop5h 11m
$545
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Sun 10/18
5:08 pm-12:03 am
1 stop5h 55m
Miami
Sat 10/24
9:54 am-7:12 pm
2 stops10h 18m
$583
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Wed 10/14
5:08 pm-11:14 pm
1 stop5h 06m
Miami
Mon 10/19
5:20 am-9:37 am
1 stop5h 17m
$599
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Tue 11/24
6:00 am-1:25 pm
1 stop6h 25m
Miami
Mon 11/30
5:00 am-9:35 am
1 stop5h 35m
$656
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Fri 9/4
10:11 am-6:39 pm
1 stop7h 28m
Miami
Mon 9/7
5:20 am-9:41 am
1 stop5h 21m
$687
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Thu 9/3
6:00 am-3:40 pm
2 stops8h 40m
Miami
Sun 9/6
4:48 pm-11:57 pm
1 stop8h 09m
$692
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Mon 10/19
5:08 pm-12:03 am
1 stop5h 55m
Miami
Fri 10/23
5:20 am-9:37 am
1 stop5h 17m
$703
Fort SmithMiami
FSM Fort Smith - MIA Miami
FSMMIA
Fort Smith
Wed 11/25
10:03 am-8:15 pm
2 stops9h 12m
Miami
Mon 11/30
5:00 am-9:35 am
1 stop5h 35m
$705
Showing 1-10 of 12 resultsSorted by cheapest first
Best time to book a flight from Fort Smith to Key Largo
Have a flexible travel schedule? Discover the best time to fly to Key Largo from Fort Smith with our price prediction graph.
FSM-MIA
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 Fort Smith to Key Largo
FSM-KE9
FSM-MIA
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Key Largo
Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated August 24, 2026.
Read reviews from past customers who have flown American Airlines from Fort Smith to Key Largo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.5
Comfort
7.2
Crew
7.9
Entertainment
6.8
Overall
7.1
Food
6.4
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Boarding
7.5
Comfort
7.2
Crew
7.9
Entertainment
6.8
Overall
7.1
Food
6.4
Reviews
1 / 20
4.0
OkayElizabeth,Mar 2026
ORD - MIA
Related info for your journey
Find useful and relevant information for your journey from Fort Smith to Key Largo. 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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Complete your trip
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Fort Smith and Key Largo flights
Browse other Fort Smith and Key Largo flight options. Last updated on August 24, 2026.
Other flights from Fort Smith
Browse through other flights departing from Fort Smith. Flights are based on user searches made on Cheapflights and were last updated on August 24, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Fort Smith to Key Largo flights
Consider these flights traveling from Fort Smith to Key Largo.
Top airline flying from Fort Smith to Key Largo
Discover the top airline that operate flights from Fort Smith to Key Largo. 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 7,457,451 searches. Data last updated August 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$347 | Average$514 | FlexibilityNo cancel fee | On-time71% |