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Cheap flights from London, ON to Key Largo from C$ 266

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 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — MIA
9 Jan — 16 Jan1
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 10 December 2025.

Sun 14/125:10 a.m.YXU - MIA
1 stop5h 30mAir Canada
Sun 21/127:25 a.m.MIA - YXU
1 stop9h 40mAir Canada
Deal found 7/12C$ 652
Sun 14/125:10 a.m.YXU - MIA
2 stops16h 33mUnited Airlines
Sun 21/128:45 a.m.MIA - YXU
2 stops12h 36mUnited Airlines
Deal found 7/12C$ 961
Sat 20/129:25 a.m.YXU - MIA
2 stops12h 45mUnited Airlines
Sun 28/127:15 a.m.MIA - YXU
2 stops14h 06mUnited Airlines
Deal found 9/12C$ 1,126
Sun 14/128:10 p.m.YXU - MIA
3 stops22h 25mMultiple Airlines
Sun 21/127:00 a.m.MIA - YXU
3 stops23h 34mMultiple Airlines
Deal found 7/12C$ 2,994
Tue 23/128:10 p.m.YXU - MIA
2 stops22h 13mWestJet
Sun 28/1211:50 a.m.MIA - YXU
2 stops18h 44mWestJet
Deal found 8/12C$ 3,107

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 10 December 2025.

Round-trip from

C$ 572

One-way from

C$ 266

Popular in

December

Cheapest in

July

Average price

C$ 842
Air Canada
  • Air Canada
  • 2/2-4/2
  • 3 total stops
  • 15h 41m total
  • London to Key Largo
Search Deals
22/1
  • 22/1
  • 2 total stops
  • 28h 37m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 10 December 2025.
Use the filters below to find and compare flights from London to Key Largo that are best for you.

Fly from

London

Fly to

Key Largo

Route

Depart

Return

Price

LondonMiami

YXU - MIA

YXUMIA

London

Mon 2/2

5:40 p.m.-12:16 a.m.

1 stop6h 36m

Miami

Wed 4/2

8:00 a.m.-5:05 p.m.

2 stops9h 05m

C$ 572

LondonMiami

YXU - MIA

YXUMIA

London

Sun 8/2

5:10 a.m.-10:40 a.m.

1 stop5h 30m

Miami

Tue 17/2

8:00 a.m.-5:05 p.m.

2 stops9h 05m

C$ 575

LondonMiami

YXU - MIA

YXUMIA

London

Fri 6/2

5:40 p.m.-12:16 a.m.

1 stop6h 36m

Miami

Tue 17/2

8:00 a.m.-5:05 p.m.

2 stops9h 05m

C$ 609

LondonMiami

YXU - MIA

YXUMIA

London

Fri 16/1

5:40 p.m.-12:16 a.m.

1 stop6h 36m

Miami

Tue 20/1

8:00 a.m.-5:05 p.m.

2 stops9h 05m

C$ 611

LondonMiami

YXU - MIA

YXUMIA

London

Wed 14/1

5:40 p.m.-12:16 a.m.

1 stop6h 36m

Miami

Mon 19/1

9:05 p.m.-8:46 a.m.

1 stop11h 41m

C$ 618

LondonMiami

YXU - MIA

YXUMIA

London

Fri 6/2

5:40 p.m.-12:16 a.m.

1 stop6h 36m

Miami

Sat 14/2

8:00 a.m.-5:05 p.m.

2 stops9h 05m

C$ 648

LondonMiami

YXU - MIA

YXUMIA

London

Thu 22/1

8:10 p.m.-12:47 a.m.

2 stops28h 37m

C$ 266

LondonMiami

YXU - MIA

YXUMIA

London

Sun 8/2

9:25 a.m.-3:21 p.m.

1 stop5h 56m

C$ 309

LondonMiami

YXU - MIA

YXUMIA

London

Tue 6/1

9:50 a.m.-3:21 p.m.

1 stop5h 31m

C$ 318

LondonMiami

YXU - MIA

YXUMIA

London

Mon 5/1

9:50 a.m.-3:21 p.m.

1 stop5h 31m

C$ 318

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 15 results
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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, February is the cheapest month in which you can book a flight from London, Ontario to Key Largo (average of C$ 84). Flying from London, Ontario to Key Largo in August is currently the most expensive (average of C$ 172). 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 10 December 2025.
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
10,514 reviews
Check prices

Overall

7.1

Entertainment

6.8

Boarding

7.3

Comfort

7.1

Crew

7.8

Food

6.3

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
10,514 reviews
Air Canada
7.1
Good
10,514 reviews
Check prices

Overall

7.1

Entertainment

6.8

Boarding

7.3

Comfort

7.1

Crew

7.8

Food

6.3

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. 2 airlines 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 6h 36m. Air Canada provides one of the quickest options available for as low as C$ 572. 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, February is the cheapest month in which you can book a flight from London, Ontario to Key Largo (average of C$ 84). Flying from London, Ontario to Key Largo in August is currently the most expensive (average of C$ 172). 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 2 airlines flying from London to Key Largo

Discover the top 2 airlines 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 10 December 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 384AverageC$ 573FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 432AverageC$ 635FlexibilityNo 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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