Cheap flights from Lambert-St Louis Intl (STL) to Key Largo

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The best prices from Lambert-St Louis Intl to Key Largo are usually found in August or July, booked 41 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

How to find the cheapest flight from
Lambert-St Louis Intl (STL) to Key Largo

All the information you need to plan the best STL to MIA flight in 2021: compare Lambert-St Louis Intl to Key Largo flight prices with the expected peak season, weather and rainfall in Key Largo.
STL - KE9
Price
$235 - $386
KE9
Temperature
78.8 - 91.4 °F
KE9
Precipitation
1.7 - 10.4 inches

Popular in

March

High demand for flights, 18% potential price rise

Cheapest in

August

Best time to find cheap flights, 26% potential price drop

Round-trip from

$235

From Lambert-St Louis Intl to Key Largo

One-way from

$89

One-way flight from Lambert-St Louis Intl to Key Largo

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from Lambert-St Louis Intl to Key Largo?

Find a great deal and save up to 33% by booking at least 28 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Lambert-St Louis Intl to Key Largo within the next two weeks, with the cheapest ticket starting at $202.

What is the cheapest month to fly from Lambert-St Louis Intl to Key Largo?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, July can be a great choice for travel to Key Largo. Flights to Key Largo from Lambert-St Louis Intl in July are about $207 on average during July, but can be found for as low as $56.

Cheap flights from Lambert-St Louis Intl to Key Largo in August, September 2021

The best prices found for STL to Key Largo flights for August, September
25 Aug - 1 Sep
$117pp
STL
Lambert-St Louis
American Airlines
Non-Stop
MIA
Miami
MIA
Miami
American Airlines
Non-Stop
STL
Lambert-St Louis
25 Aug - 31 Aug
$123pp
STL
Lambert-St Louis
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
STL
Lambert-St Louis
18 Aug - 22 Aug
$125pp
STL
Lambert-St Louis
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis Intl to Key Largo 2021 flight deals

Cheap flights to Key Largo from Lambert-St Louis Intl found for this year
25 Aug - 1 Sep
$117pp
STL
Lambert-St Louis
American Airlines
Non-Stop
MIA
Miami
MIA
Miami
American Airlines
Non-Stop
STL
Lambert-St Louis
25 Aug - 31 Aug
$123pp
STL
Lambert-St Louis
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
STL
Lambert-St Louis
18 Aug - 22 Aug
$125pp
STL
Lambert-St Louis
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
STL
Lambert-St Louis

Non-stop flights to Key Largo from Lambert-St Louis Intl

Save time with Lambert-St Louis Intl to Key Largo direct flight deals
25 Aug - 1 Sep
$117pp
STL
Lambert-St Louis
American Airlines
Non-Stop
MIA
Miami
MIA
Miami
American Airlines
Non-Stop
STL
Lambert-St Louis
4 Oct - 8 Oct
$137pp
STL
Lambert-St Louis
American Airlines
Non-Stop
MIA
Miami
MIA
Miami
American Airlines
Non-Stop
STL
Lambert-St Louis
22 Aug - 2 Sep
$157pp
STL
Lambert-St Louis
American Airlines
Non-Stop
MIA
Miami
MIA
Miami
American Airlines
Non-Stop
STL
Lambert-St Louis

Last minute flights from Lambert-St Louis Intl to Key Largo

Late deals on round-trip flights to Key Largo from Lambert-St Louis Intl, departing today and this week
8 Aug - 14 Aug
$165pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
MIA
Miami
MIA
Miami
Delta
 
1 STOP
STL
Lambert-St Louis
10 Aug - 13 Aug
$168pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
STL
Lambert-St Louis
9 Aug - 13 Aug
$169pp
STL
Lambert-St Louis
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
STL
Lambert-St Louis

One-way flights to Key Largo from Lambert-St Louis Intl

The cheapest one-way flights from Lambert-St Louis Intl to Key Largo
7:17 am - 4:30 pm
Frontier
1 Stop
8h 13m
STL - MIA
Frontier
$89
Hotwire
1:35 pm - 9:02 am
Multiple Airlines
3 Stops
18h 27m
STL - MIA
Multiple Airlines
$161
Kiwi.com
5:13 am - 5:48 pm
American Airlines
2 Stops
11h 35m
STL - MIA
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Lambert-St Louis Intl</span> to <span class="emphasized">Key Largo</span> flights.

Flight FAQs

From Lambert-St Louis Intl to Key Largo

Are flight prices decreasing from St Louis to Key Largo due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both St Louis and Key Largo for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Lambert-St Louis to Key Largo have flexible cancellations due to COVID-19?

American Airlines, Delta, and Frontier are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

What airport do you fly from for flights from St. Louis to Key Largo?

For a flight from St. Louis to Key Largo, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 outbound flights to Key Largo per day. 8 airlines have flights to Key Largo from Lambert-St Louis on a regular basis.

Can I find flights from Lambert-St Louis Intl to Key Largo for under $200 on Cheapflights?

Yes, there are multiple flights from Lambert-St Louis Intl to Key Largo for under $200. The cheapest flight booked recently is on American Airlines for just $117, but on average you can expect to pay $145.

Are there nonstop flights from Lambert-St Louis Intl to Key Largo for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Lambert-St Louis Intl to Key Largo under $200. A good price for a nonstop flight from Lambert-St Louis Intl to Key Largo is less than $199.

Are there last-minute flights available from Lambert-St Louis Intl to Key Largo for under $200?

There are currently 20+ open flights from Lambert-St Louis Intl to Key Largo within the next 7 days for less than $200.

Is St Louis weather warmer or cooler than Key Largo?

Our data indicates that the weather will be 91 °F on average in the month of July. The temperature in Key Largo is typically hotter than in St Louis. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

What are the most popular airlines that fly from St Louis to Key Largo?

Before booking your flight from St Louis to Key Largo check out the most popular airlines for this route: Major Airline, American Airlines or Delta.

What are the cheapest Flights from St Louis to Key Largo?

Looking for the cheapest flight from St Louis to Key Largo? While on average our users pay $720, our data indicates the cheapest price to be $101. The most popular route (Lambert-St Louis - Miami), is priced around $147.

What are the most reliable airlines from St Louis to Key Largo?

Before booking your flight to Key Largo from St Louis, check out the most reliable airlines to get you to your destination on time: Iberia (86%), American Airlines (84%), Envoy Air( 79%).

How long is the flight from Lambert-St Louis Intl to Key Largo?

Airlines like American Airlines and Frontier fly from Lambert-St Louis Intl to Key Largo in about 2h 42m. The time it takes to get you to your destination can typically vary by up to 2h 27m. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Lambert-St Louis Intl to Key Largo round-trip?

According to our current data, American Airlines ($117), and Frontier ($123) offers the cheapest pricing from Lambert-St Louis Intl to Key Largo.

What are the cheapest airlines to fly from Lambert-St Louis Intl to Key Largo one-way?

The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $59. Check flights for Frontier, as they currently have the next best price.

COVID Restrictions

View COVID Travel Restrictions for Key Largo

Do I need a COVID test to fly to Key Largo from Lambert-St Louis Intl?

Information is based on travel restrictions for travel to Key Largo within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Key Largo.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Key Largo.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Key Largo.

Do I need a test to fly back to Lambert-St Louis Intl from Key Largo?

Returning to Lambert-St Louis from Key Largo

COVID-19 testing requirements
Visitors from Key Largo must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Key Largo are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Key Largo

Alternative routes for Lambert-St Louis Intl to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Key Largo

Things to know before you go - useful duration and weather info for your trip from Lambert-St Louis Intl to Key Largo.
Flight duration
2h 44m
Average temperature for August in Key Largo
91.4 °F
Avg rainfall for August in Key Largo
9.5 ″

Airports servicing St. Louis

Airports servicing Key Largo

Top 6 airlines flying from Lambert-St Louis Intl to Key Largo

The chart below displays the airlines Cheapflights users traveling from Lambert-St Louis Intl to Key Largo choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Allegiant Air
$104 $227 No cancel fee 88%
Frontier
$93 $229 No cancel fee 62%
United Airlines
$98 $367 No cancel fee 69%
American Airlines
$139 $395 No cancel fee 71%
Delta
$99 $405 No cancel fee N/A
Southwest
$387 $642 No cancel fee 63%

Hourly flight availability from Lambert-St Louis Intl to Key Largo

See what time of day planes typically take off from Lambert-St Louis Intl towards Key Largo.
Afternoon Noon to 6 PM 39% of STL to Key Largo departures
Early morning Midnight to 6 AM 32% of STL to Key Largo departures
Evening 6 PM to midnight 15% of STL to Key Largo departures
Morning 6 AM to noon 14% of STL to Key Largo departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Lambert-St Louis Intl to Key Largo
See how many times per day planes take to the skies headed from Lambert-St Louis Intl to Key Largo.
Sunday
5 daily flights
Monday
5 daily flights
Tuesday
5 daily flights
Wednesday
4 daily flights
Thursday
6 daily flights
Friday
5 daily flights
Saturday
8 daily flights
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