$309 Cheap Flights from Buffalo (BUF) to London (LHR)

View $309 flight on Wed, Dec 3, 2025Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Heathrow Airport (LHR)

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Cheap Flights from Buffalo to London (BUF-LHR)

Prices were available within the past 7 days and start at $309 for one-way flights and $399 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Tue, Aug 12 - Tue, Aug 19
BUF
Buffalo
LHR
London
$399 Roundtrip, found 10 hours ago
$399
Roundtrip
found 10 hours ago
Select British Airways flight, departing Tue, Aug 12 from Buffalo to London, returning Tue, Aug 19, priced at $399 found 10 hours ago
United
Tue, Aug 12 - Tue, Aug 19
BUF
Buffalo
LHR
London
$409 Roundtrip, found 10 hours ago
$409
Roundtrip
found 10 hours ago
Select United flight, departing Tue, Aug 12 from Buffalo to London, returning Tue, Aug 19, priced at $409 found 10 hours ago
American Airlines
Tue, Aug 12 - Tue, Aug 19
BUF
Buffalo
LHR
London
$414 Roundtrip, found 10 hours ago
$414
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Tue, Aug 12 from Buffalo to London, returning Tue, Aug 19, priced at $414 found 10 hours ago
American Airlines
Sat, Aug 9 - Sun, Aug 17
BUF
Buffalo
LHR
London
$462 Roundtrip, found 17 hours ago
$462
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sat, Aug 9 from Buffalo to London, returning Sun, Aug 17, priced at $462 found 17 hours ago
United
Sat, Feb 28 - Sun, Mar 1
BUF
Buffalo
LHR
London
$507 Roundtrip, found 2 days ago
$507
Roundtrip
found 2 days ago
Select United flight, departing Sat, Feb 28 from Buffalo to London, returning Sun, Mar 1, priced at $507 found 2 days ago
Air Canada
Wed, Sep 3 - Wed, Sep 24
BUF
Buffalo
LHR
London
$532 Roundtrip, found 2 days ago
$532
Roundtrip
found 2 days ago
Select Air Canada flight, departing Wed, Sep 3 from Buffalo to London, returning Wed, Sep 24, priced at $532 found 2 days ago
JetBlue Airways
Tue, Aug 12 - Tue, Aug 19
BUF
Buffalo
LHR
London
$534 Roundtrip, found 10 hours ago
$534
Roundtrip
found 10 hours ago
Select JetBlue Airways flight, departing Tue, Aug 12 from Buffalo to London, returning Tue, Aug 19, priced at $534 found 10 hours ago
Lufthansa
Mon, Aug 25 - Tue, Sep 2
BUF
Buffalo
LHR
London
$563 Roundtrip, found 1 day ago
$563
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Mon, Aug 25 from Buffalo to London, returning Tue, Sep 2, priced at $563 found 1 day ago
Virgin Atlantic
Tue, Sep 23 - Tue, Sep 30
BUF
Buffalo
LHR
London
$650 Roundtrip, found 1 hour ago
$650
Roundtrip
found 1 hour ago
Select Virgin Atlantic flight, departing Tue, Sep 23 from Buffalo to London, returning Tue, Sep 30, priced at $650 found 1 hour ago
Delta
Wed, Oct 1 - Tue, Oct 14
BUF
Buffalo
LHR
London
$650 Roundtrip, found 6 hours ago
$650
Roundtrip
found 6 hours ago
Select Delta flight, departing Wed, Oct 1 from Buffalo to London, returning Tue, Oct 14, priced at $650 found 6 hours ago

Find the cheapest month to fly from Buffalo (BUF) to London (LHR)

August is typically the cheapest month to fly

From $530 - $1,178 per traveler.

Graph displaying average flight prices per month

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gatwick LGW. Average driving time to city center is 52 minutes. Flights from $708
LGW
Gatwick
Average driving time to city center52 min
Flights from $708
Select flight to London City LCY. Cheapest and Closest option available. Average driving time to city center is 21 minutes. Flights from $568
LCY
London City
CheapestClosest
Average driving time to city center21 min
Flights from $568
Flights from Buffalo (BUF) to London (LHR)
Origin airport
Buffalo Niagara Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Icelandair, JetBlue Airways, KLM, LOT-Polish Airlines, Lufthansa, Royal Air Maroc, Scandinavian Airlines, TAP Portugal, United, Virgin Atlantic
Roundtrip price
$398
Distance
3543 mi

Buffalo to London Flights

The cheapest times to fly from Buffalo to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Buffalo to London are during the month of August. You can find some of the cheapest flights from Buffalo to London with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Buffalo to London

Sunday is one of the best days to book for cheap flights from Buffalo to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Buffalo to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Buffalo to London in 2025. You can also book with separate airlines for your outbound and return journeys, from $309 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Buffalo to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Buffalo to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Buffalo Niagara Intl. Airport (BUF) to Heathrow Airport (LHR) cost?
Discover the latest flight deals from BUF to LHR by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BUF to LHR?
The cheapest flights from BUF to LHR are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BUF to LHR?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BUF to LHR. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Buffalo Niagara Intl. Airport (BUF) to Heathrow Airport (LHR)?
There are no daily nonstop flights departing from Buffalo Niagara Intl. Airport (BUF) to Heathrow Airport (LHR). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from BUF to LHR?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Buffalo Niagara Intl. Airport (BUF) to Heathrow Airport (LHR)?
Opt for a flight from Buffalo Niagara Intl. Airport (BUF) to Heathrow Airport (LHR) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Buffalo Niagara Intl. Airport (BUF) to Heathrow Airport (LHR) last-minute?
Waiting until right before your break to book a flight from BUF to LHR often results in higher prices. While you may come across some last-minute offers, they're not always guaranteed. Be flexible with your travel plans for a better chance of landing a bargain.
Is it cheaper to book a BUF to LHR flight and hotel package?
Compared with arranging hotels and flights separately, booking a BUF to LHR flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place takes the hassle out of planning your trip. Simply secure your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Buffalo Niagara Intl. Airport (BUF) to Heathrow Airport (LHR)?
In most cases, you can cancel or reschedule your BUF to LHR flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want further details, visit our Customer Service portal.

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London nearby Airports

London

Buffalo to Gatwick
$493.41
Buffalo to London City
$567.61
*Available to One Key members.