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Cheap flights from Connecticut to London Heathrow Airport from £140

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 20/7. Fares are subject to change and may not be available on all flights or dates of travel.
BDL — LHR
5 May — 12 May1
1 adult

Cheap flight deals from Connecticut to Heathrow

Keep the following information in mind while searching for Connecticut to Heathrow flight deals. Data was last updated 30 April 2025.

Round-trip from

£383

One-way from

£140
Icelandair
  • Icelandair
  • 31/7-6/9
  • 2 total stops
  • 40h 15m total
  • Connecticut to London
Search Deals
Icelandair
  • Icelandair
  • 20/7
  • 1 total stop
  • 10h 30m total
  • Connecticut to London
Search Deals

Find flight deals from Connecticut to Heathrow

Cheapest flights from Connecticut to Heathrow
Explore the most affordable flight options available from Connecticut to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Thu 31/720:25JFK - LHR
1 stop10h 30mIcelandair
Sat 6/921:25LHR - JFK
1 stop29h 45mIcelandair
Deal found 29/4£383
Mon 18/818:55JFK - LHR
1 stop33h 25mScandinavian Airlines
Sun 28/919:50LHR - JFK
1 stop24h 50mScandinavian Airlines
Deal found 29/4£384
Fri 16/519:25JFK - LHR
1 stop13h 15mSWISS
Sun 18/506:00LHR - JFK
1 stop11h 50mSWISS
Deal found 29/4£386
Tue 9/916:45JFK - LHR
1 stop10h 40mIberia
Tue 23/910:00LHR - JFK
Nonstop7h 45mIberia
Deal found 30/4£388
Thu 8/515:50LGA - LHR
1 stop12h 45mAir Canada
Thu 15/509:30LHR - LGA
1 stop10h 18mAir Canada
Deal found 28/4£394
Sun 7/910:30LGA - LHR
2 stops15h 00mMultiple Airlines
Sun 5/1006:50LHR - LGA
2 stops12h 57mMultiple Airlines
Deal found 29/4£398
Tue 13/515:40JFK - LHR
1 stop12h 55mMultiple Airlines
Sun 18/506:00LHR - JFK
1 stop11h 50mMultiple Airlines
Deal found 29/4£400
Fri 19/920:05JFK - LHR
Nonstop7h 10mBritish Airways
Tue 23/918:05LHR - JFK
Nonstop7h 55mBritish Airways
Deal found 28/4£403
Sun 10/815:30JFK - LHR
1 stop11h 20mAmerican Airlines
Thu 21/816:20LHR - JFK
Nonstop8h 05mAmerican Airlines
Deal found 29/4£409
Tue 13/509:00JFK - LHR
1 stop16h 30mUnited Airlines
Thu 22/507:45LHR - JFK
1 stop10h 15mUnited Airlines
Deal found 29/4£412
Sat 16/806:00LGA - LHR
1 stop23h 40mUnited Airlines
Thu 28/809:30LHR - LGA
1 stop27h 32mUnited Airlines
Deal found 29/4£415
Tue 12/814:54LGA - LHR
1 stop11h 26mAmerican Airlines
Tue 19/808:55LHR - LGA
1 stop11h 37mAmerican Airlines
Deal found 29/4£417

Cheapflights Fare Finder

Customise your flight search to find flights from Connecticut to Heathrow 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 858,174 searches. Data last updated 30 April 2025.
Use the filters below to find and compare flights from Connecticut to London Heathrow Airport that are best for you.

Fly from

Connecticut

Fly to

Heathrow

Route

Depart

Return

Price

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Thu 31/7

20:25-11:55

1 stop10h 30m

London Heathrow

Sat 6/9

21:25-22:10

1 stop29h 45m

£383

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 20/8

18:55-16:00

1 stop16h 05m

London Heathrow

Tue 26/8

07:05-15:40

1 stop13h 35m

£384

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 16/5

19:25-13:40

1 stop13h 15m

London Heathrow

Sun 18/5

06:00-12:50

1 stop11h 50m

£386

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Thu 8/5

15:50-09:35

1 stop12h 45m

London Heathrow

Thu 15/5

09:30-14:48

1 stop10h 18m

£394

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Sun 17/8

07:50-19:45

Nonstop6h 55m

London Heathrow

Sun 24/8

08:25-11:10

Nonstop7h 45m

£396

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 20/8

18:45-06:50

Nonstop7h 05m

London Heathrow

Sun 24/8

14:40-17:35

Nonstop7h 55m

£397

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 13/5

21:00-09:15

Nonstop7h 15m

London Heathrow

Sun 18/5

18:50-21:29

Nonstop7h 39m

£401

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 13/5

09:00-06:30

1 stop16h 30m

London Heathrow

Wed 21/5

06:00-12:50

1 stop11h 50m

£406

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Sun 10/8

15:30-07:50

1 stop11h 20m

London Heathrow

Thu 21/8

16:20-19:25

Nonstop8h 05m

£409

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 13/5

09:00-06:30

1 stop16h 30m

London Heathrow

Thu 22/5

07:45-13:00

1 stop10h 15m

£412

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 60 results
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6

Best time to book a flight from Connecticut to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Connecticut with our price prediction graph.
Estimated return 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 Connecticut to London Heathrow Airport

What is the cheapest month to book a flight from Connecticut to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Connecticut to London Heathrow Airport (average of £112). Flying from Connecticut to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

What is the cheapest time of day to fly from CT to LHR?

Find hourly flight availability from Connecticut to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 April 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Connecticut to London Heathrow Airport as you normally would.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 30 April 2025.
To help decide which airline to fly from Connecticut to London, see what other customers have to say about Delta, KLM and Finnair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,934 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Connecticut to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Connecticut to London Heathrow Airport one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £140. TAP AIR PORTUGAL flights start at £166 while deals on JetBlue start at £204 one-way.

  • What are the most popular routes from Connecticut to London Heathrow Airport?

    The most popular route from Connecticut to London Heathrow Airport is New York John F Kennedy Intl - London Heathrow. You may also consider Newark - London Heathrow or New York LaGuardia - London Heathrow.

  • Can I find deals for flights from Connecticut to Heathrow that include hotel bookings?

    Yes. In addition to deals on Connecticut to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Connecticut to Heathrow?

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

  • Can I find deals for business class flights from Connecticut to Heathrow?

    Yes. Cheapflights offers flight deals from Connecticut to Heathrow 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 Connecticut to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Connecticut to London Heathrow Airport (average of £112). Flying from Connecticut to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Travelling to a place near Connecticut?

Book flights to Connecticut if you plan to visit one of these locations
Deal
Hounslow
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Northampton
Southend-on-Sea
Ilford
Crawley
Hayes
Ipswich
Watford
Wembley
Swindon
Folkestone
Maidstone
Winchester

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Connecticut to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Cheapflights does show flights with no change fees to all users. To see these options for flights from Connecticut to Heathrow, users can toggle the no change fees filter when performing a flight search.

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