Find flights
When to book
Airlines
FAQs

Cheap flights from London, ON to Key Largo from C$ 337

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 22/7. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — MIA
8 Jul — 15 Jul1
1 adult

Cheap 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 3 July 2025.

Round-trip from

C$ 578

One-way from

C$ 337

Popular in

December

Cheapest in

June

Average price

C$ 619
Air Canada
  • Air Canada
  • 16/8-23/8
  • 4 total stops
  • 28h 38m total
  • London to Key Largo
Air Canada
  • Air Canada
  • 22/7
  • 2 total stops
  • 8h 55m total
  • London to Key Largo
Highest demand for flights based on searches. 4% potential increase in price (C$ 41 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease (C$ 27 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from London to Key Largo

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 3 July 2025.

Wed 5/119:25 a.m.YXU - MIA
1 stop6h 06mAir Canada
Mon 10/118:00 a.m.MIA - YXU
2 stops13h 21mAir Canada
Deal found 1/7C$ 510
Sat 16/86:15 a.m.YXU - MIA
2 stops14h 30mUnited Airlines
Sat 23/87:34 a.m.MIA - YXU
2 stops9h 33mUnited Airlines
Deal found 2/7C$ 609

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 3 July 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

Sat 16/8

5:45 p.m.-1:11 p.m.

2 stops19h 26m

Miami

Sat 23/8

7:55 a.m.-5:07 p.m.

2 stops9h 12m

C$ 578

LondonMiami

YXU - MIA

YXUMIA

London

Sat 16/8

6:15 a.m.-8:45 p.m.

2 stops14h 30m

Miami

Sat 23/8

7:34 a.m.-5:07 p.m.

2 stops9h 33m

C$ 609

LondonMiami

YXU - MIA

YXUMIA

London

Sat 16/8

3:40 p.m.-4:07 p.m.

3 stops24h 27m

Miami

Sat 23/8

7:55 a.m.-5:07 p.m.

2 stops9h 12m

C$ 789

LondonMiami

YXU - MIA

YXUMIA

London

Tue 5/8

5:45 p.m.-12:15 p.m.

2 stops18h 30m

Miami

Sun 10/8

5:45 p.m.-9:17 a.m.

3 stops15h 32m

C$ 1,627

LondonMiami

YXU - MIA

YXUMIA

London

Tue 22/7

6:15 a.m.-3:10 p.m.

2 stops8h 55m

C$ 337

LondonMiami

YXU - MIA

YXUMIA

London

Fri 18/7

9:45 p.m.-5:38 a.m.

3 stops31h 53m

C$ 399

LondonMiami

YXU - MIA

YXUMIA

London

Sat 16/8

3:40 p.m.-2:11 p.m.

3 stops22h 31m

C$ 572

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

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, April is the cheapest month in which you can book a flight from London, Ontario to Key Largo (average of C$ 251). Flying from London, Ontario to Key Largo in August is currently the most expensive (average of C$ 369). 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 3 July 2025.
Check out reviews from past customers who have flown with United Airlines,Air Canada, andAvianca 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.

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.0

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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.

  • 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, April is the cheapest month in which you can book a flight from London, Ontario to Key Largo (average of C$ 251). Flying from London, Ontario to Key Largo in August is currently the most expensive (average of C$ 369). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

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 3 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 378AverageC$ 564FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 436AverageC$ 608FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.