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Cheap flights from London, ON to Key Largo from C$ 427

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — MIA
28 Jul — 4 Aug1
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 28 June 2026.

Fri 17/73:30 p.m.
YXU
-
MIA
1 stop5h 18m
Air Canada
Tue 21/71:05 p.m.
MIA
-
YXU
1 stop7h 27m
Air Canada
Deal found 24/6C$ 830
Sun 9/83:30 p.m.
YXU
-
MIA
1 stop5h 18m
Air Canada
Tue 18/81:10 p.m.
MIA
-
YXU
1 stop8h 30m
Air Canada
Deal found 24/6C$ 844
Sat 31/105:30 a.m.
YXU
-
MIA
1 stop5h 39m
Air Canada
Tue 3/117:20 a.m.
MIA
-
YXU
1 stop14h 32m
Air Canada
Deal found 27/6C$ 850
Thu 6/83:30 p.m.
YXU
-
MIA
1 stop5h 18m
Air Canada
Tue 11/89:45 p.m.
MIA
-
YXU
1 stop11h 35m
Air Canada
Deal found 26/6C$ 867
Sat 31/105:30 a.m.
YXU
-
MIA
2 stops12h 44m
United Airlines
Tue 3/118:53 a.m.
MIA
-
YXU
3 stops12h 59m
United Airlines
Deal found 27/6C$ 876

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 28 June 2026.

Round-trip from

C$ 827

One-way from

C$ 427

Popular in

September

Cheapest in

July

Average price

C$ 762
Air Canada
  • Air Canada
  • 11/8-14/8
  • 3 total stops
  • 15h 55m total
  • London to Key Largo
Search Deals
Air Canada
  • Air Canada
  • 9/8
  • 1 total stop
  • 5h 18m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 28 June 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

Fri 17/7

3:30 p.m.-8:48 p.m.

1 stop5h 18m

Miami

Tue 21/7

1:05 p.m.-8:32 p.m.

1 stop7h 27m

C$ 830

LondonMiami

YXU - MIA

YXUMIA

London

Sat 31/10

5:30 a.m.-11:09 a.m.

1 stop5h 39m

Miami

Tue 3/11

7:20 a.m.-9:52 p.m.

1 stop14h 32m

C$ 850

LondonMiami

YXU - MIA

YXUMIA

London

Thu 6/8

3:30 p.m.-8:48 p.m.

1 stop5h 18m

Miami

Tue 11/8

9:45 p.m.-9:20 a.m.

1 stop11h 35m

C$ 867

LondonMiami

YXU - MIA

YXUMIA

London

Sat 31/10

5:30 a.m.-6:14 p.m.

2 stops12h 44m

Miami

Tue 3/11

8:53 a.m.-9:52 p.m.

3 stops12h 59m

C$ 873

LondonMiami

YXU - MIA

YXUMIA

London

Sat 25/7

3:30 p.m.-8:48 p.m.

1 stop5h 18m

Miami

Sat 1/8

9:45 p.m.-9:17 a.m.

1 stop11h 32m

C$ 876

LondonMiami

YXU - MIA

YXUMIA

London

Thu 6/8

10:05 a.m.-10:27 p.m.

2 stops12h 22m

Miami

Tue 11/8

7:00 a.m.-5:42 p.m.

2 stops10h 42m

C$ 908

LondonMiami

YXU - MIA

YXUMIA

London

Thu 1/10

5:40 a.m.-12:14 p.m.

1 stop6h 34m

Miami

Mon 5/10

9:45 p.m.-9:20 a.m.

1 stop11h 35m

C$ 935
Cheapest one-way
Quickest one-way

LondonMiami

YXU - MIA

YXUMIA

London

Sun 9/8

3:30 p.m.-8:48 p.m.

1 stop5h 18m

C$ 427

LondonMiami

YXU - MIA

YXUMIA

London

Mon 10/8

5:40 a.m.-12:13 p.m.

1 stop6h 33m

C$ 427

LondonMiami

YXU - MIA

YXUMIA

London

Mon 27/7

3:30 p.m.-8:48 p.m.

1 stop5h 18m

C$ 429

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/6

Showing 1-10 of 17 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 28 June 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
11,269 reviews
Check prices

Boarding

7.3

Food

6.3

Entertainment

6.8

Overall

7.1

Comfort

7.1

Crew

7.8

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
11,269 reviews
Air Canada
7.1
Good
11,269 reviews
Check prices

Boarding

7.3

Food

6.3

Entertainment

6.8

Overall

7.1

Comfort

7.1

Crew

7.8

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 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 5h 18m. Air Canada provides one of the quickest options available for as low as C$ 830. 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 28 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 473AverageC$ 717FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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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.

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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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