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Cheap flights from St. John's to Key Largo from C$ 339

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYT — MIA
4 Mar — 11 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St. John's to Key Largo

Enter your travel dates to find the best prices.

Cheapest flights from St. John's to Key Largo
Explore the most affordable flight options available from St. John's to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 February 2026.

Wed 18/36:35 a.m.
YYT
-
MIA
1 stop10h 10m
Air Canada
Wed 25/38:00 a.m.
MIA
-
YYT
1 stop7h 51m
Air Canada
Deal found 31/1C$ 640
Wed 18/35:00 a.m.
YYT
-
MIA
2 stops14h 02m
United Airlines
Wed 25/310:54 a.m.
MIA
-
YYT
2 stops13h 34m
United Airlines
Deal found 31/1C$ 733
Sat 25/41:30 p.m.
YYT
-
MIA
1 stop8h 13m
Air Canada
Sun 3/57:10 a.m.
MIA
-
YYT
1 stop8h 31m
Air Canada
Deal found 1/2C$ 760
Sun 17/51:15 p.m.
YYT
-
MIA
1 stop10h 32m
Air Canada
Sun 24/59:45 p.m.
MIA
-
YYT
2 stops14h 13m
Air Canada
Deal found 31/1C$ 776
Sat 16/55:20 a.m.
YYT
-
MIA
2 stops16h 58m
Air Canada
Sun 24/59:45 p.m.
MIA
-
YYT
2 stops14h 13m
Air Canada
Deal found 31/1C$ 859
Sat 28/25:00 a.m.
YYT
-
MIA
3 stops18h 29m
United Airlines
Sat 7/39:00 a.m.
MIA
-
YYT
2 stops15h 28m
United Airlines
Deal found 31/1C$ 886

Find flight deals from St. John's to Key Largo

Keep the following information in mind while searching for St. John's to Key Largo flight deals. Data was last updated 2 February 2026.

Round-trip from

C$ 640

One-way from

C$ 339

Popular in

April

Cheapest in

June

Average price

C$ 889
Air Canada
  • Air Canada
  • 18/3-25/3
  • 3 total stops
  • 20h 55m total
  • St. John's to Key Largo
Search Deals
18/3
  • 18/3
  • 3 total stops
  • 21h 19m total
  • St. John's to Key Largo
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. John's 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 629,999 searches. Data last updated 2 February 2026.
Use the filters below to find and compare flights from St. John's to Key Largo that are best for you.

Fly from

St. John's

Fly to

Key Largo

Route

Depart

Return

Price

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Wed 18/3

6:35 a.m.-3:15 p.m.

1 stop10h 10m

Miami

Wed 25/3

8:00 a.m.-8:15 p.m.

2 stops10h 45m

C$ 640

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Wed 18/3

5:00 a.m.-5:32 p.m.

2 stops14h 02m

Miami

Wed 25/3

10:54 a.m.-1:58 a.m.

2 stops13h 34m

C$ 733

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Sat 25/4

7:30 a.m.-8:13 p.m.

2 stops14h 13m

Miami

Sun 3/5

7:10 a.m.-5:11 p.m.

1 stop8h 31m

C$ 760

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Sun 17/5

1:15 p.m.-10:17 p.m.

1 stop10h 32m

Miami

Sun 24/5

9:45 p.m.-1:28 p.m.

2 stops14h 13m

C$ 776

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Wed 18/3

6:20 a.m.-2:09 a.m.

3 stops21h 19m

C$ 339

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Wed 18/3

6:35 a.m.-3:15 p.m.

1 stop10h 10m

C$ 359

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Wed 18/3

5:00 a.m.-5:32 p.m.

2 stops14h 02m

C$ 408

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Thu 26/2

5:00 a.m.-10:20 p.m.

2 stops18h 50m

C$ 560

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Thu 26/2

6:35 a.m.-12:16 a.m.

1 stop19h 11m

C$ 703

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/2

Best time to book a flight from St. John's to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from St. John's 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 St. John's to Key Largo

How far ahead should I book a flight from St. John's to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from St. John's to Key Largo. Price data was last updated on 30 January 2026.

The best time to book flights from St. John's to Key Largo is 28 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from St. John's to Key Largo?

Currently, October is the cheapest month in which you can book a flight from St. John's to Key Largo (average of C$ 331). Flying from St. John's to Key Largo in December is currently the most expensive (average of C$ 493). 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 2 February 2026.
See what other customers who have flown with Air Canada from St. John's to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,673 reviews
Check prices

Comfort

7.1

Overall

7.1

Boarding

7.3

Crew

7.8

Food

6.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍
Air Canada
7.1
Good
10,673 reviews
Air Canada
7.1
Good
10,673 reviews
Check prices

Comfort

7.1

Overall

7.1

Boarding

7.3

Crew

7.8

Food

6.3

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍

Related info for your journey

Find useful and relevant information for your journey from St. John's 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 St. John's to Key Largo?

    St John's (YYT) is the airport you will fly out of if you book a flight from St. John's to Key Largo. You should not have trouble finding flights to Key Largo from St John's; 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 2 airlines have flights from the St. John's airport to Key Largo. It is only a 6.7 km journey to St John's (YYT) from St. John's’s city centre.

  • How long is the flight from St. John's to Key Largo?

    A quick flight from St. John's to Key Largo can take about 10h 10m. Air Canada provides one of the quickest options available for as low as C$ 640. The distance between St. John's and Key Largo is about 3415 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from St. John's to Key Largo that include hotel bookings?

    Yes. In addition to deals on St. John's to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. John's to Key Largo?

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

  • Can I find deals for business class flights from St. John's to Key Largo?

    Yes. Cheapflights offers flight deals from St. John's 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 St. John's to Key Largo?

    Currently, October is the cheapest month in which you can book a flight from St. John's to Key Largo (average of C$ 331). Flying from St. John's to Key Largo in December is currently the most expensive (average of C$ 493). 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

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Top 2 airlines flying from St. John's to Key Largo

Discover the top 2 airlines that operate flights from St. John's 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 629,999 searches. Data last updated 2 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 367AverageC$ 787FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 368AverageC$ 568FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from St. John's to Key Largo?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from St. John's to Key Largo. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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Can Cheapflights find flights from St. John's to Key Largo with no change fees?

Yes, we can. To see specific flights from St. John's to Key Largo with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from St. John's to Key Largo become cheaper?

Not ready to book yet? You can track prices for flights from St. John's to Key Largo on Cheapflights with our Price Alert feature and get notified when better prices are available.

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