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Cheap flights from London, ON to Key Largo from C$ 410

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — MIA
17 May — 24 May1
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 17 April 2026.

Sun 24/55:10 a.m.
YXU
-
MIA
1 stop7h 03m
Air Canada
Wed 27/58:05 a.m.
MIA
-
YXU
2 stops9h 28m
Air Canada
Deal found 12/4C$ 742
Sun 19/45:10 a.m.
YXU
-
MIA
1 stop6h 08m
Air Canada
Sat 25/48:00 a.m.
MIA
-
YXU
2 stops9h 04m
Air Canada
Deal found 13/4C$ 757
Sun 7/63:30 p.m.
YXU
-
MIA
1 stop5h 18m
Air Canada
Tue 9/68:05 a.m.
MIA
-
YXU
2 stops9h 28m
Air Canada
Deal found 16/4C$ 760
Sun 31/55:10 a.m.
YXU
-
MIA
1 stop7h 03m
Air Canada
Sun 7/69:45 p.m.
MIA
-
YXU
1 stop13h 58m
Air Canada
Deal found 16/4C$ 782

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 17 April 2026.

Round-trip from

C$ 742

One-way from

C$ 410

Popular in

December

Cheapest in

July

Average price

C$ 704
Air Canada
  • Air Canada
  • 24/5-27/5
  • 3 total stops
  • 16h 31m total
  • London to Key Largo
Search Deals
Air Canada
  • Air Canada
  • 11/5
  • 1 total stop
  • 7h 03m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 17 April 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
Quickest round-trip

LondonMiami

YXU - MIA

YXUMIA

London

Sun 24/5

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

1 stop7h 03m

Miami

Wed 27/5

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

2 stops9h 28m

C$ 743

LondonMiami

YXU - MIA

YXUMIA

London

Sun 31/5

12:20 p.m.-10:17 p.m.

2 stops9h 57m

Miami

Sun 7/6

9:45 p.m.-8:53 a.m.

1 stop11h 08m

C$ 793

LondonMiami

YXU - MIA

YXUMIA

London

Thu 28/5

5:10 a.m.-12:18 p.m.

1 stop7h 08m

Miami

Thu 4/6

9:45 p.m.-8:53 a.m.

1 stop11h 08m

C$ 800
Cheapest one-way
Quickest one-way

LondonMiami

YXU - MIA

YXUMIA

London

Mon 11/5

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

1 stop7h 03m

C$ 410

LondonMiami

YXU - MIA

YXUMIA

London

Thu 28/5

5:10 a.m.-5:07 p.m.

2 stops11h 57m

C$ 424

LondonMiami

YXU - MIA

YXUMIA

London

Thu 7/5

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

1 stop7h 03m

C$ 432

LondonMiami

YXU - MIA

YXUMIA

London

Sat 30/5

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

1 stop7h 03m

C$ 438

LondonMiami

YXU - MIA

YXUMIA

London

Thu 28/5

5:10 a.m.-4:16 p.m.

2 stops11h 06m

C$ 454

LondonMiami

YXU - MIA

YXUMIA

London

Fri 29/5

9:30 a.m.-10:27 p.m.

2 stops12h 57m

C$ 454

LondonMiami

YXU - MIA

YXUMIA

London

Sat 30/5

5:10 a.m.-2:39 p.m.

2 stops9h 29m

C$ 455

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 12 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
No data available for this route at this time. Please check back soon.

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 17 April 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
10,932 reviews
Check prices

Boarding

7.3

Crew

7.8

Entertainment

6.8

Comfort

7.1

Food

6.3

Overall

7.1

Reviews

1 / 20
6.0
Good

Thomas,Apr 2026

YYZ - LHR

Food is sub par. I travel a lot and AC food is not good
Air Canada
7.1
Good
10,932 reviews
Air Canada
7.1
Good
10,932 reviews
Check prices

Boarding

7.3

Crew

7.8

Entertainment

6.8

Comfort

7.1

Food

6.3

Overall

7.1

Reviews

1 / 20
6.0
Good

Thomas,Apr 2026

YYZ - LHR

Food is sub par. I travel a lot and AC food is not good

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$ 743. 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.

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 17 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 421AverageC$ 670FlexibilityNo 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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