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Cheap flights from St. John's to Key Largo from C$ 273

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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
YYT — MIA
6 Feb — 13 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 7 January 2026.

Round-trip from

C$ 468

One-way from

C$ 273

Popular in

April

Cheapest in

June

Average price

C$ 766
Air Canada
  • Air Canada
  • 20/1-22/1
  • 3 total stops
  • 18h 49m total
  • St. John's to Key Largo
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Air Canada
  • Air Canada
  • 3/2
  • 2 total stops
  • 10h 34m total
  • St. John's to Key Largo
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find 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 7 January 2026.

Tue 20/15:05 a.m.YYT - MIA
1 stop8h 04mAir Canada
Thu 22/18:00 a.m.MIA - YYT
2 stops10h 45mAir Canada
Deal found 6/1C$ 468
Sun 17/51:35 p.m.YYT - MIA
2 stops23h 25mUnited Airlines
Sun 24/57:35 p.m.MIA - YYT
2 stops27h 36mUnited Airlines
Deal found 6/1C$ 715
Thu 19/25:05 a.m.YYT - MIA
1 stop8h 04mAir Canada
Thu 26/28:00 a.m.MIA - YYT
1 stop15h 41mAir Canada
Deal found 4/1C$ 750
Thu 19/21:30 p.m.YYT - MIA
2 stops22h 55mUnited Airlines
Mon 2/35:35 p.m.MIA - YYT
2 stops22h 16mUnited Airlines
Deal found 5/1C$ 783
Thu 19/21:30 p.m.YYT - MIA
2 stops22h 55mUnited Airlines
Thu 26/25:35 p.m.MIA - YYT
2 stops22h 16mUnited Airlines
Deal found 4/1C$ 796
Sat 7/21:25 p.m.YYT - MIA
2 stops10h 34mAir Canada
Sun 15/28:00 a.m.MIA - YYT
2 stops14h 00mAir Canada
Deal found 6/1C$ 814

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 7 January 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

Tue 20/1

5:05 a.m.-11:39 a.m.

1 stop8h 04m

Miami

Thu 22/1

8:00 a.m.-5:20 p.m.

1 stop7h 50m

C$ 468

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Sun 17/5

1:35 p.m.-11:30 a.m.

2 stops23h 25m

Miami

Sun 24/5

7:35 p.m.-12:41 a.m.

2 stops27h 36m

C$ 715

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Thu 19/2

5:05 a.m.-11:39 a.m.

1 stop8h 04m

Miami

Thu 26/2

8:00 a.m.-1:11 a.m.

1 stop15h 41m

C$ 750

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Thu 19/2

1:30 p.m.-10:55 a.m.

2 stops22h 55m

Miami

Mon 2/3

5:35 p.m.-5:21 p.m.

2 stops22h 16m

C$ 783

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Thu 19/2

1:30 p.m.-10:55 a.m.

2 stops22h 55m

Miami

Thu 26/2

5:35 p.m.-5:21 p.m.

2 stops22h 16m

C$ 796

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Sat 7/2

1:25 p.m.-10:29 p.m.

2 stops10h 34m

Miami

Sun 15/2

8:00 a.m.-11:30 p.m.

2 stops14h 00m

C$ 814

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Tue 3/2

5:05 a.m.-11:39 a.m.

1 stop8h 04m

C$ 273

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Tue 3/2

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

3 stops18h 50m

C$ 329

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Thu 26/2

1:30 p.m.-10:55 a.m.

2 stops22h 55m

C$ 329

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Thu 19/2

1:30 p.m.-10:55 a.m.

2 stops22h 55m

C$ 331

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/1

Showing 1-10 of 16 results
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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 2 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$ 335). Flying from St. John's to Key Largo in December is currently the most expensive (average of C$ 499). 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.

How much does it cost to fly round-trip from St. John's to Key Largo?

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 7 January 2026.
See what other customers who have flown with Porter Airlines and 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.
Porter Airlines
8.0
Very good
406 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

7.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
406 reviews
Porter Airlines
8.0
Very good
406 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

7.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,600 reviews
Porter Airlines
8.0
Very good
406 reviews
Check prices

Boarding

8.2

Entertainment

7.0

Overall

8.0

Food

7.6

Comfort

7.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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 3 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 8h 04m. Air Canada provides one of the quickest options available for as low as C$ 468. The distance between St. John's and Key Largo is about 3415 km.

  • 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$ 335). Flying from St. John's to Key Largo in December is currently the most expensive (average of C$ 499). 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

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Top 3 airlines flying from St. John's to Key Largo

Discover the top 3 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 7 January 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 290AverageC$ 689FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 372AverageC$ 822FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 389AverageC$ 642FlexibilityNo 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?

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Why should you use Cheapflights to find cheap flight tickets from St. John's to Key Largo?

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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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