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Cheap flights from Buffalo to London Heathrow Airport from £238

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.
BUF — LHR
19 Jun — 26 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Buffalo to Heathrow
Explore the most affordable flight options available from Buffalo to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 May 2026.

Sun 4/1019:55
BUF
-
LHR
1 stop30h 00m
United Airlines
Wed 7/1006:50
LHR
-
BUF
2 stops14h 57m
United Airlines
Deal found 18/5£571
Sat 3/1019:59
BUF
-
LHR
1 stop20h 21m
United Airlines
Mon 5/1017:50
LHR
-
BUF
2 stops27h 57m
United Airlines
Deal found 16/5£615
Wed 26/807:00
BUF
-
LHR
2 stops18h 35m
Air Canada
Fri 11/906:00
LHR
-
BUF
2 stops20h 07m
Air Canada
Deal found 18/5£631
Wed 26/810:30
BUF
-
LHR
2 stops24h 55m
SWISS
Fri 11/906:00
LHR
-
BUF
2 stops20h 07m
SWISS
Deal found 19/5£633
Sat 22/817:58
BUF
-
LHR
2 stops31h 32m
Multiple Airlines
Wed 26/808:40
LHR
-
BUF
1 stop15h 44m
Multiple Airlines
Deal found 19/5£634
Wed 26/810:06
BUF
-
LHR
1 stop17h 59m
Multiple Airlines
Fri 11/908:15
LHR
-
BUF
1 stop11h 11m
Multiple Airlines
Deal found 18/5£635
Wed 26/816:13
BUF
-
LHR
1 stop14h 07m
Air France
Fri 11/911:30
LHR
-
BUF
2 stops16h 33m
Air France
Deal found 17/5£639

Find flight deals from Buffalo to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 20 May 2026.

Round-trip from

£571

One-way from

£238

Popular in

June

Cheapest in

September

Average price

£676
United Airlines
  • United Airlines
  • 4/10-7/10
  • 3 total stops
  • 44h 57m total
  • Buffalo to London
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JetBlue
  • JetBlue
  • 20/7
  • 1 total stop
  • 19h 30m total
  • Buffalo to London
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£64 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Buffalo 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 20 May 2026.
Use the filters below to find and compare flights from Buffalo to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Sat 31/10

09:55-06:55

1 stop17h 00m

London Heathrow

Sun 8/11

06:30-18:54

2 stops17h 24m

£648

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Wed 30/9

19:35-13:05

1 stop12h 30m

London Heathrow

Tue 6/10

06:30-18:54

2 stops17h 24m

£648

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Sat 15/8

12:01-06:45

2 stops13h 44m

London Heathrow

Sat 29/8

06:30-19:19

2 stops17h 49m

£652

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Fri 31/7

10:00-06:20

1 stop15h 20m

London Heathrow

Wed 12/8

08:40-19:19

2 stops15h 39m

£708

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Tue 4/8

12:01-10:20

2 stops17h 19m

London Heathrow

Wed 12/8

11:45-00:40

2 stops17h 55m

£711

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Wed 5/8

16:13-13:15

1 stop16h 02m

London Heathrow

Fri 14/8

06:15-19:08

2 stops17h 53m

£713

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Fri 24/7

08:55-07:10

1 stop17h 15m

London Heathrow

Thu 6/8

06:30-19:19

2 stops17h 49m

£717
Fastest return journey

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Mon 27/7

15:57-06:45

1 stop9h 48m

London Heathrow

Tue 4/8

06:30-18:23

2 stops16h 53m

£718

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Fri 31/7

19:19-13:15

1 stop12h 56m

London Heathrow

Wed 12/8

09:20-18:55

1 stop14h 35m

£729

BuffaloLondon

BUF - LHR

BUFLHR

Buffalo

Wed 30/9

14:30-17:45

3 stops22h 15m

London Heathrow

Tue 6/10

06:00-20:24

2 stops19h 24m

£786

Flights are sorted by cheapest return flights first.

Deals found on 16/5

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Buffalo to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Buffalo 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 Buffalo to London Heathrow Airport

How far ahead should I book a flight from Buffalo to London Heathrow Airport?

To ensure you get the cheapest price possible for a flight from Buffalo to London Heathrow Airport, you should look to book at least 26 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, September is the cheapest month in which you can book a flight from Buffalo to London Heathrow Airport (average of £471). Flying from Buffalo to London Heathrow Airport in June is currently the most expensive (average of £709). 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.

How much does it cost for a return flight from Buffalo to London Heathrow Airport?

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Heathrow. 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 Buffalo to London Heathrow?

    If you book a flight to London Heathrow from Buffalo, you will be flying from Buffalo, which is the city’s only airport. Buffalo (BUF) is located 8.3 mi from the center of Buffalo. There are 0 flights from Buffalo to London Heathrow per day from 0 different airlines.

  • How long is the flight from Buffalo to London Heathrow Airport?

    Airlines like Delta fly from Buffalo to London Heathrow Airport in about 17h. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 3540 mi.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Buffalo to London Heathrow Airport (average of £471). Flying from Buffalo to London Heathrow Airport in June is currently the most expensive (average of £709). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Croydon
Northampton
Wembley
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Watford
Romford
Kingston upon Thames
Eastbourne
Ipswich
Swindon
Guildford
Southall

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Why should you use Cheapflights to find cheap flight tickets from Buffalo to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from Buffalo by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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Yes! Cheapflights helps users easily find flights from Buffalo to Heathrow with no change fees.

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Of course! You can now track prices for flights from Buffalo to Heathrow 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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