Cheap flights from Seattle (SEA) to Key Largo

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

The best prices from Seattle to Key Largo are usually found in August or July, booked 22 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

How to find the cheapest flight from
Seattle (SEA) to Key Largo

All the information you need to plan the best SEA to MIA flight in 2021: compare Seattle to Key Largo flight prices with the expected peak season, weather and rainfall in Key Largo.
SEA - KE9
Price
$264 - $545
KE9
Temperature
78.8 - 91.4 °F
KE9
Precipitation
1.7 - 10.4 inches

Popular in

December

High demand for flights, 30% potential price rise

Cheapest in

August

Best time to find cheap flights, 31% potential price drop

Round-trip from

$264

From Seattle to Key Largo

One-way from

$119

One-way flight from Seattle 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 Seattle to Key Largo?

Users have found that booking a flight from Seattle to Key Largo at least 28 days early can save you up to 33% on average compared to booking a flight this week. If booking 28 days before your flight isn’t an option for you, users have found flights from Seattle to Key Largo for as little as $202 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $254 for flights departing within the next 3 days.

What is the cheapest month to fly from Seattle to Key Largo?

July is one of the best times of the year to fly to Key Largo from Seattle. Prices for July average $207 per person but you can even find prices for as low as $56. The most expensive prices can be found in the month of December. Opting for a July flight can save you 40% on your journey compared to booking in July

Cheap flights from Seattle to Key Largo in August, September 2021

The best prices found for SEA to Key Largo flights for August, September
30 Aug - 1 Sep
$160pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
30 Aug - 1 Sep
$178pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
31 Aug - 1 Sep
$180pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle to Key Largo 2021 flight deals

Cheap flights to Key Largo from Seattle found for this year
30 Aug - 1 Sep
$160pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
22 Sep - 28 Sep
$164pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
21 Sep - 28 Sep
$170pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl

Non-stop flights to Key Largo from Seattle

Save time with Seattle to Key Largo direct flight deals
24 Oct - 2 Nov
$237pp
SEA
Seattle/Tacoma Intl
American Airlines
Non-Stop
MIA
Miami
MIA
Miami
American Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
17 Oct - 25 Oct
$267pp
SEA
Seattle/Tacoma Intl
American Airlines
Non-Stop
MIA
Miami
MIA
Miami
American Airlines
Non-Stop
SEA
Seattle/Tacoma Intl
12 Jan - 19 Jan
$287pp
SEA
Seattle/Tacoma Intl
American Airlines
Non-Stop
MIA
Miami
MIA
Miami
American Airlines
Non-Stop
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Key Largo

Late deals on round-trip flights to Key Largo from Seattle, departing today and this week
10 Aug - 25 Aug
$223pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
10 Aug - 24 Aug
$224pp
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
MIA
Miami
MIA
Miami
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
10 Aug - 26 Aug
$228pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
MIA
Miami
MIA
Miami
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Key Largo from Seattle

The cheapest one-way flights from Seattle to Key Largo
6:02 pm - 2:54 am
American Airlines
Nonstop
5h 52m
SEA - MIA
American Airlines
1:37 pm - 3:30 pm
Frontier
2 Stops
22h 53m
SEA - MIA
Frontier
$121
Kiwi.com
3:57 pm - 4:30 pm
Multiple Airlines
3 Stops
21h 33m
SEA - MIA
Multiple Airlines
$126
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Key Largo</span> flights.

Flight FAQs

From Seattle to Key Largo

Are flight prices decreasing from Seattle 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 Seattle 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 Seattle/Tacoma Intl to Key Largo have flexible cancellations due to COVID-19?

Some of our airline partners flying from Seattle/Tacoma Intl to Key Largo have new flexible policies in place due to COVID-19. American Airlines, Frontier, and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

What airport do you fly from for flights from Seattle to Key Largo?

Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Key Largo. You should not have trouble finding flights to Key Largo from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Key Largo per day. You should also have plenty of airline options to choose from since 10 airlines have flights from the Seattle airport to Key Largo. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

Can I find flights from Seattle to Key Largo for under $200 on Cheapflights?

Yes, there are multiple flights from Seattle to Key Largo for under $200. The cheapest flight booked recently is on Frontier for just $160, but on average you can expect to pay $186.

Are there nonstop flights from Seattle to Key Largo for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Key Largo under $300. A good price for a nonstop flight from Seattle to Key Largo is less than $370.

Are there last-minute flights available from Seattle to Key Largo for under $300?

There are currently 20+ open flights from Seattle to Key Largo within the next 7 days for less than $300.

Is Seattle weather warmer or cooler than Key Largo?

Temperatures around the 91 °F's can be experienced in July. The weather in Key Largo is hotter than in Seattle. Plan for potential changes in flight availability as peak weather approaches in this location.

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

The most popular airlines flying from Seattle to Key Largo are Major Airline, American Airlines and Alaska Airlines. Something to consider prior to booking your flight.

What are the cheapest Flights from Seattle to Key Largo?

Looking for the cheapest flight from Seattle to Key Largo? While on average our users pay $900, our data indicates the cheapest price to be $128. The most popular route (Seattle/Tacoma Intl - Miami), is priced around $189.

How long is the flight from Seattle to Key Largo?

Departing from Seattle to Key Largo will take you 8h 40m.

What is the cheapest airline to fly from Seattle to Key Largo round-trip?

Cheapflights users have booked flights from Seattle to Key Largo round-trip from $160.

What are the cheapest airlines to fly from Seattle to Key Largo one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $82. Users have also found prices from $119 and $127 on Frontier and American Airlines, respectively.

COVID Restrictions

View COVID Travel Restrictions for Key Largo

Do I need a COVID test to fly to Key Largo from Seattle?

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

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Key Largo.

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

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Key Largo.

Do I need a test to fly back to Seattle from Key Largo?

Returning to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Key Largo are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Key Largo

Alternative routes for Seattle 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 Seattle to Key Largo.
Average temperature for August in Key Largo
91.4 °F
Avg rainfall for August in Key Largo
9.5 ″

Airports servicing Seattle

Airports servicing Key Largo

Top 9 airlines flying from Seattle to Key Largo

The chart below displays the airlines Cheapflights users traveling from Seattle 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
Frontier
$106 $266 No cancel fee 62%
JetBlue
$148 $295 No cancel fee 62%
Spirit Airlines
$127 $312 No cancel fee 65%
United Airlines
$97 $378 No cancel fee 69%
American Airlines
$143 $473 No cancel fee 71%
Delta
$143 $481 No cancel fee N/A
Alaska Airlines
$208 $512 No cancel fee 75%
Sun Country Air
$158 $540 No cancel fee 83%
Envoy Air
$421 $900 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by Envoy Air. Please check directly on their website for additional information.

Hourly flight availability from Seattle to Key Largo

See what time of day planes typically take off from Seattle towards Key Largo.
Evening 6 PM to midnight 57% of SEA to Key Largo departures
Morning 6 AM to noon 42% of SEA to Key Largo departures
Early morning Midnight to 6 AM 1% of SEA to Key Largo departures
Afternoon Noon to 6 PM 0% of SEA to Key Largo departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to Key Largo
See how many times per day planes take to the skies headed from Seattle to Key Largo.
Sunday
2 daily flights
Monday
2 daily flights
Tuesday
2 daily flights
Wednesday
2 daily flights
Thursday
0 flights
Friday
2 daily flights
Saturday
2 daily flights
Home North America USA Florida Key Largo Cheap flights from Seattle to Key Largo