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Cheap flights from St. John's to Key Largo from C$ 435

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYT — MIA
23 Jun — 30 Jun1
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 24 May 2026.

Sat 7/116:20 a.m.
YYT
-
MIA
1 stop8h 10m
Porter Airlines
Mon 9/112:00 p.m.
MIA
-
YYT
1 stop9h 31m
Porter Airlines
Deal found 20/5C$ 665
Wed 21/101:15 p.m.
YYT
-
MIA
1 stop10h 32m
Air Canada
Thu 22/108:15 a.m.
MIA
-
YYT
2 stops9h 58m
Air Canada
Deal found 23/5C$ 703
Wed 7/105:00 a.m.
YYT
-
MIA
1 stop8h 44m
Air Canada
Fri 16/108:15 a.m.
MIA
-
YYT
1 stop7h 23m
Air Canada
Deal found 23/5C$ 714
Tue 3/111:05 p.m.
YYT
-
MIA
1 stop10h 54m
Air Canada
Sat 14/118:00 a.m.
MIA
-
YYT
2 stops9h 40m
Air Canada
Deal found 20/5C$ 743
Tue 3/111:05 p.m.
YYT
-
MIA
1 stop10h 54m
Air Canada
Thu 12/119:05 p.m.
MIA
-
YYT
1 stop18h 09m
Air Canada
Deal found 20/5C$ 748
Tue 3/111:05 p.m.
YYT
-
MIA
1 stop10h 54m
Air Canada
Tue 10/1112:55 p.m.
MIA
-
YYT
1 stop10h 31m
Air Canada
Deal found 20/5C$ 749

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 24 May 2026.

Round-trip from

C$ 665

One-way from

C$ 435

Popular in

July

Cheapest in

September

Average price

C$ 1,133
Porter Airlines
  • Porter Airlines
  • 7/11-9/11
  • 2 total stops
  • 17h 41m total
  • St. John's to Key Largo
Search Deals
Air Canada
  • Air Canada
  • 18/9
  • 1 total stop
  • 18h 12m total
  • St. John's to Key Largo
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 24 May 2026.
Use the filters below to find and compare flights from St. John's to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Wed 21/10

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

1 stop10h 32m

Miami

Thu 22/10

8:15 a.m.-5:08 p.m.

1 stop7h 23m

C$ 703

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Wed 7/10

5:00 a.m.-12:14 p.m.

1 stop8h 44m

Miami

Fri 16/10

8:15 a.m.-7:43 p.m.

2 stops9h 58m

C$ 714

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Sat 7/11

5:05 a.m.-10:16 p.m.

2 stops18h 41m

Miami

Sat 14/11

6:30 a.m.-9:08 p.m.

2 stops13h 08m

C$ 826

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Wed 7/10

5:35 a.m.-2:47 p.m.

2 stops10h 42m

Miami

Fri 16/10

8:45 a.m.-1:46 a.m.

2 stops15h 31m

C$ 839

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Fri 10/7

8:00 p.m.-12:13 p.m.

1 stop17h 43m

Miami

Sat 18/7

8:15 a.m.-8:03 p.m.

2 stops10h 18m

C$ 847

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Fri 6/11

5:00 a.m.-8:37 p.m.

2 stops17h 07m

Miami

Sat 14/11

6:30 a.m.-9:08 p.m.

2 stops13h 08m

C$ 868
Cheapest one-way

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Fri 18/9

5:35 a.m.-10:17 p.m.

1 stop18h 12m

C$ 435
Quickest one-way

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Tue 28/7

3:00 p.m.-12:55 a.m.

2 stops11h 25m

C$ 459

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Tue 28/7

8:00 p.m.-12:08 p.m.

1 stop17h 38m

C$ 502

St. John'sMiami

YYT - MIA

YYTMIA

St John's

Tue 28/7

6:00 a.m.-4:55 p.m.

3 stops12h 25m

C$ 507

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/5

Showing 1-10 of 14 resultsSorted by cheapest first
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 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 24 May 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
11,078 reviews
Check prices

Comfort

7.1

Entertainment

6.8

Overall

7.1

Boarding

7.3

Crew

7.8

Food

6.3

Reviews

1 / 20
6.0
Good

Paula,Mar 2026

YVR - PSP

Everything was OK, but we waited on the tarmac for an hour and 20 minutes after landing because there was no available gate. This is a daily occurrence at the Palm Springs airport, and happens with Air Canada and WestJet constantly.
Air Canada
7.1
Good
11,078 reviews
Air Canada
7.1
Good
11,078 reviews
Check prices

Comfort

7.1

Entertainment

6.8

Overall

7.1

Boarding

7.3

Crew

7.8

Food

6.3

Reviews

1 / 20
6.0
Good

Paula,Mar 2026

YVR - PSP

Everything was OK, but we waited on the tarmac for an hour and 20 minutes after landing because there was no available gate. This is a daily occurrence at the Palm Springs airport, and happens with Air Canada and WestJet constantly.

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 32m. Air Canada provides one of the quickest options available for as low as C$ 703. 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.

See more FAQs

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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 24 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 338AverageC$ 855FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 402AverageC$ 593FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

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How does Cheapflights help users find flights 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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