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Cheap flights from London, ON to Key Largo from C$ 381

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — MIA
22 Apr — 29 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Key Largo

Enter your travel dates to find the best prices.

Cheapest flights from London to Key Largo
Explore the most affordable flight options available from London to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 March 2026.

Mon 11/55:10 a.m.
YXU
-
MIA
1 stop7h 03m
Air Canada
Wed 13/58:15 a.m.
MIA
-
YXU
2 stops9h 18m
Air Canada
Deal found 23/3C$ 707
Fri 1/55:10 a.m.
YXU
-
MIA
2 stops11h 57m
Air Canada
Wed 6/58:15 a.m.
MIA
-
YXU
2 stops9h 18m
Air Canada
Deal found 21/3C$ 709
Sun 7/65:10 a.m.
YXU
-
MIA
1 stop7h 03m
Air Canada
Tue 9/68:05 a.m.
MIA
-
YXU
2 stops9h 28m
Air Canada
Deal found 19/3C$ 716
Thu 7/55:10 a.m.
YXU
-
MIA
1 stop7h 03m
Air Canada
Thu 14/58:15 a.m.
MIA
-
YXU
2 stops9h 18m
Air Canada
Deal found 22/3C$ 738
Sat 18/49:25 a.m.
YXU
-
MIA
1 stop5h 52m
Air Canada
Sat 25/48:00 a.m.
MIA
-
YXU
2 stops9h 04m
Air Canada
Deal found 19/3C$ 749
Mon 31/85:40 a.m.
YXU
-
MIA
1 stop6h 33m
Air Canada
Tue 1/99:45 p.m.
MIA
-
YXU
1 stop14h 00m
Air Canada
Deal found 19/3C$ 752
Mon 20/45:10 a.m.
YXU
-
MIA
1 stop6h 08m
Air Canada
Thu 30/412:20 p.m.
MIA
-
YXU
1 stop8h 59m
Air Canada
Deal found 21/3C$ 753

Find flight deals from London to Key Largo

Keep the following information in mind while searching for London to Key Largo flight deals. Data was last updated 23 March 2026.

Round-trip from

C$ 709

One-way from

C$ 381

Popular in

December

Cheapest in

July

Average price

C$ 661
Air Canada
  • Air Canada
  • 1/5-6/5
  • 4 total stops
  • 21h 15m total
  • London to Key Largo
Search Deals
Air Canada
  • Air Canada
  • 5/5
  • 1 total stop
  • 7h 03m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London 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 23 March 2026.
Use the filters below to find and compare flights from London to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonMiami

YXU - MIA

YXUMIA

London

Sun 7/6

5:10 a.m.-12:13 p.m.

1 stop7h 03m

Miami

Tue 9/6

8:05 a.m.-5:33 p.m.

2 stops9h 28m

C$ 716

LondonMiami

YXU - MIA

YXUMIA

London

Thu 7/5

5:10 a.m.-12:13 p.m.

1 stop7h 03m

Miami

Thu 14/5

8:15 a.m.-5:33 p.m.

2 stops9h 18m

C$ 738

LondonMiami

YXU - MIA

YXUMIA

London

Mon 3/8

12:20 p.m.-10:11 p.m.

2 stops9h 51m

Miami

Mon 10/8

9:45 p.m.-8:55 a.m.

1 stop11h 10m

C$ 751

LondonMiami

YXU - MIA

YXUMIA

London

Mon 31/8

5:40 a.m.-5:01 p.m.

2 stops11h 21m

Miami

Tue 1/9

9:45 p.m.-8:55 a.m.

1 stop11h 10m

C$ 757

LondonMiami

YXU - MIA

YXUMIA

London

Thu 16/4

9:25 a.m.-10:17 p.m.

2 stops12h 52m

Miami

Thu 23/4

12:20 p.m.-9:19 p.m.

1 stop8h 59m

C$ 789

LondonMiami

YXU - MIA

YXUMIA

London

Mon 3/8

5:40 a.m.-8:33 p.m.

2 stops14h 53m

Miami

Mon 10/8

12:30 p.m.-9:40 p.m.

2 stops9h 10m

C$ 804
Quickest round-trip

LondonMiami

YXU - MIA

YXUMIA

London

Fri 17/4

5:10 a.m.-11:18 a.m.

1 stop6h 08m

Miami

Tue 21/4

8:00 a.m.-5:04 p.m.

2 stops9h 04m

C$ 816

LondonMiami

YXU - MIA

YXUMIA

London

Sun 7/6

5:40 a.m.-8:33 p.m.

2 stops14h 53m

Miami

Tue 9/6

4:53 p.m.-5:33 p.m.

3 stops24h 40m

C$ 915

LondonMiami

YXU - MIA

YXUMIA

London

Sun 3/5

5:40 a.m.-2:57 p.m.

2 stops9h 17m

Miami

Sun 10/5

6:15 a.m.-5:33 p.m.

2 stops11h 18m

C$ 963
Cheapest one-way

LondonMiami

YXU - MIA

YXUMIA

London

Sun 17/5

5:10 a.m.-12:13 p.m.

1 stop7h 03m

C$ 381

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/3

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from London to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from London 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 London to Key Largo

What is the cheapest month to book a flight from London, Ontario to Key Largo?

Currently, March is the cheapest month in which you can book a flight from London, Ontario to Key Largo (average of C$ 93). Flying from London, Ontario to Key Largo in December is currently the most expensive (average of C$ 204). 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 23 March 2026.
Check out reviews from past customers who have flown with Air Canada from London to Key Largo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,836 reviews
Check prices

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Food

6.3

Crew

7.8

Overall

7.1

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.
Air Canada
7.1
Good
10,836 reviews
Air Canada
7.1
Good
10,836 reviews
Check prices

Boarding

7.3

Comfort

7.1

Entertainment

6.8

Food

6.3

Crew

7.8

Overall

7.1

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.

Related info for your journey

Find useful and relevant information for your journey from London 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 London to Key Largo?

    London (YXU), located 8.6 km from the city centre, is the airport you fly out of when you book flights from London to Key Largo. 1 airline have flights from London to Key Largo on a regular basis. Booking flights from London to Key Largo should not be difficult; the airport handles an average of 0 outbound flights to Key Largo per day.

  • How long is the flight from London, Ontario to Key Largo?

    A quick flight from London, Ontario to Key Largo can take about 7h 03m. Air Canada provides one of the quickest options available for as low as C$ 716. London, Ontario and Key Largo are separated by a distance of 1917 km.

  • Can I find deals for flights from London to Key Largo that include hotel bookings?

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

  • How can I find direct flights from London to Key Largo?

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

  • Can I find deals for business class flights from London to Key Largo?

    Yes. Cheapflights offers flight deals from London 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 London, Ontario to Key Largo?

    Currently, March is the cheapest month in which you can book a flight from London, Ontario to Key Largo (average of C$ 93). Flying from London, Ontario to Key Largo in December is currently the most expensive (average of C$ 204). 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 airline flying from London to Key Largo

Discover the top airline that operate flights from London 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 23 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 422AverageC$ 667FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Key Largo?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London 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.

Why should you use Cheapflights to find cheap flight tickets from London to Key Largo?

Cheapflights simply makes it quick and affordable to book flights from London to Key Largo by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from London to Key Largo with no change fees?

Yes! Cheapflights helps users easily find flights from London to Key Largo with no change fees.

Can Cheapflights notify me if prices for flights from London to Key Largo become cheaper?

Of course! You can now track prices for flights from London to Key Largo and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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