HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$324+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
FSM — MIA
May 11 — May 181
Mon 5/11
Mon 5/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

Cheapest flights from Fort Smith to Key Largo
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 April 11, 2026.

This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:10 am
FSM
-
MIA
1 stop7h 36m
American Airlines
Tue 4/146:05 am
MIA
-
FSM
1 stop5h 35m
American Airlines
Deal found 4/7$389
This American Airlines deal was found by Cheapflights users on 4/11. 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 4/1611:10 am
FSM
-
MIA
1 stop4h 54m
American Airlines
Wed 4/225:05 am
MIA
-
FSM
1 stop6h 35m
American Airlines
Deal found 4/11$447
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/245:15 pm
FSM
-
MIA
1 stop5h 44m
American Airlines
Sun 5/315:24 am
MIA
-
FSM
1 stop5h 12m
American Airlines
Deal found 4/8$467
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1711:10 am
FSM
-
MIA
1 stop7h 36m
American Airlines
Mon 4/205:05 am
MIA
-
FSM
1 stop6h 35m
American Airlines
Deal found 4/8$499
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:15 pm
FSM
-
MIA
1 stop5h 44m
American Airlines
Sat 6/135:24 am
MIA
-
FSM
1 stop5h 11m
American Airlines
Deal found 4/8$501
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:15 pm
FSM
-
MIA
1 stop5h 44m
American Airlines
Wed 6/105:30 pm
MIA
-
FSM
1 stop7h 27m
American Airlines
Deal found 4/8$545

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 April 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(American Airlines)

Popular in

March

Cheapest in

September

Average price

$472
Provider with most accurate pricing for Fort Smith-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Fort Smith-Miami flights.
Search Deals
From Fort Smith to Key Largo
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($138 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 2,558,603 searches. Data last updated April 11, 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

Price

Cheapest round-trip

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Wed 6/3

5:15 pm-11:59 pm

1 stop5h 44m

Miami

Wed 6/10

5:30 pm-11:57 pm

1 stop7h 27m

$545

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Fri 6/19

5:15 pm-11:59 pm

1 stop5h 44m

Miami

Sat 6/27

5:24 am-9:35 am

1 stop5h 11m

$567
Quickest round-trip

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Sat 6/20

5:26 pm-11:59 pm

1 stop5h 33m

Miami

Sun 6/28

5:24 am-9:36 am

1 stop5h 12m

$579

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Tue 6/2

5:15 pm-11:59 pm

1 stop5h 44m

Miami

Wed 6/10

1:25 pm-11:57 pm

2 stops11h 32m

$595

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Fri 6/26

5:15 pm-11:59 pm

1 stop5h 44m

Miami

Sat 7/4

5:25 am-9:35 am

1 stop5h 10m

$599

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Mon 6/1

5:15 pm-11:59 pm

1 stop5h 44m

Miami

Tue 6/9

6:20 am-4:44 pm

2 stops11h 24m

$622

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Sun 6/21

5:15 pm-11:59 pm

1 stop5h 44m

Miami

Sun 6/28

5:24 am-9:36 am

1 stop5h 12m

$657

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Thu 6/4

5:15 pm-11:59 pm

1 stop5h 44m

Miami

Sun 6/14

5:24 am-9:36 am

1 stop5h 12m

$677

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Sun 6/7

5:15 pm-11:59 pm

1 stop5h 44m

Miami

Sun 6/14

7:40 am-4:44 pm

2 stops10h 04m

$729
Cheapest one-way

Fort SmithMiami

FSM - MIA

FSMMIA

Fort Smith

Sun 5/10

6:00 am-12:45 pm

1 stop5h 45m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/6

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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.
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

What is the cheapest month to book a flight from Fort Smith to Key Largo?

Currently, March is the cheapest month in which you can book a flight from Fort Smith to Key Largo (average of $86). Flying from Fort Smith to Key Largo in November is currently the most expensive (average of $252). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 April 11, 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.
American Airlines
7.1
Good
11,572 reviews

Comfort

7.2

Boarding

7.5

Entertainment

6.9

Overall

7.1

Crew

7.9

Food

6.4

Reviews

1 / 20
4.0
Okay

Elizabeth,Mar 2026

ORD - MIA

Staff was rude and flight attendants 2 out of 3 looked like they had just been thru a hurricane.
American Airlines
7.1
Good
11,572 reviews
American Airlines
7.1
Good
11,572 reviews

Comfort

7.2

Boarding

7.5

Entertainment

6.9

Overall

7.1

Crew

7.9

Food

6.4

Reviews

1 / 20
4.0
Okay

Elizabeth,Mar 2026

ORD - MIA

Staff was rude and flight attendants 2 out of 3 looked like they had just been thru a hurricane.

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.

  • What airport do you fly from for flights from Fort Smith to Key Largo?

    Most people fly from Fort Smith (FSM) if they book a flight from Fort Smith to Key Largo. On average, Fort Smith has 0 outbound flights to Key Largo per day from 1 airline. Fort Smith is conveniently located just 3.8 mi from Fort Smith’s city center.

  • How long is the flight from Fort Smith to Key Largo?

    There are many flights that can get you from Fort Smith to Key Largo in 5h 44m. Fly via American Airlines to get the fastest option. Fort Smith and Key Largo are separated by a distance of 1063 mi.

  • Can I find deals for flights from Fort Smith to Key Largo that include hotel bookings?

    Yes. In addition to deals on Fort Smith to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Fort Smith to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Fort Smith to Key Largo.

  • Can I find deals for business class flights from Fort Smith to Key Largo?

    Yes. Cheapflights offers flight deals from Fort Smith to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Fort Smith to Key Largo?

    Currently, March is the cheapest month in which you can book a flight from Fort Smith to Key Largo (average of $86). Flying from Fort Smith to Key Largo in November is currently the most expensive (average of $252). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 Fort Smith to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Memphis to Miami flights
Memphis to Orlando flights
Memphis to Fort Lauderdale flights
Fayetteville to Orlando flights
Fayetteville to Miami flights
Memphis to Jacksonville flights
Memphis to Orlando Sanford Intl flights
Little Rock to Orlando flights
Memphis to Sarasota flights
Fayetteville to Tampa flights
Little Rock to Miami flights
Fayetteville to Valparaiso flights
Memphis to Tampa flights
Memphis to Key West flights
Little Rock to Tampa flights
Fayetteville to Pensacola flights
Fayetteville to Fort Lauderdale flights
Fayetteville to Jacksonville flights
Little Rock to Panama City flights
Fayetteville to Panama City flights
Memphis to Panama City flights
Memphis to Fort Myers flights
Memphis to Pensacola flights
Fayetteville to West Palm Beach flights
Fayetteville to Fort Myers flights
Memphis to West Palm Beach flights
Fayetteville to Orlando Sanford Intl flights
Fayetteville to Sarasota flights
Little Rock to Fort Lauderdale flights
Little Rock to Jacksonville flights
Memphis to Valparaiso flights
Little Rock to Pensacola flights
Fayetteville to Key West flights
Little Rock to Key West flights
Little Rock to Sarasota flights
Little Rock to West Palm Beach flights
Little Rock to Fort Myers flights
Memphis to St Petersburg flights
Fayetteville to Daytona Beach flights
Memphis to Daytona Beach flights
Memphis to Gainesville flights
Little Rock to Valparaiso flights
Fort Smith to Orlando flights
Memphis to Tallahassee flights
Little Rock to Daytona Beach flights
Memphis to Melbourne flights
Fayetteville to Tallahassee flights
Fayetteville to Gainesville flights

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 2,558,603 searches. Data last updated April 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$388Average$472FlexibilityNo cancel feeOn-time71%

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.