Title: Cheap Flights from London (LHR) to Niagara Falls (IAG) - Expedia.ca ![Bridal Veil Falls which includes a city, landscape views and a waterfall](https://images.trvl-media.com/place/6066055/c442c496-ee29-41e5-9368-d8bd9109295b.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6066055/c442c496-ee29-41e5-9368-d8bd9109295b.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from London (LHR) to Niagara Falls (IAG) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Heathrow Airport (LHR) to Niagara Falls, NY (IAG-Niagara Falls Intl.) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:iag,departure:28/10/2025TANYT&leg2=from:iag,to:lhr,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:iag,departure:28/10/2025TANYT&leg2=from:iag,to:lhr,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:iag,departure:28/10/2025TANYT&leg2=from:iag,to:lhr,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:iag,departure:28/10/2025TANYT&leg2=from:iag,to:lhr,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:iag,departure:28/10/2025TANYT&leg2=from:iag,to:lhr,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:iag,departure:28/10/2025TANYT&leg2=from:iag,to:lhr,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:lhr,to:iag,departure:28/10/2025TANYT&leg2=from:iag,to:lhr,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) Flight from London to Niagara Falls (LHR - IAG) route information | Origin airport | Heathrow | | --- | --- | | Destination airport | Niagara Falls Intl. | | Distance | 5670 km | ## London to Niagara Falls Flights **The easy way to book your flights from London to Niagara Falls**  With Expedia, it’s simple to find and book flights to Niagara Falls from London whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Niagara Falls Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from London to Niagara Falls today, tomorrow, or this week.   **Save dollars with cheap flights from Heathrow, LHR to Niagara Falls Intl., IAG**  Sort your search results by price to find great deals on your flight from London to Niagara Falls—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Niagara Falls from London currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Niagara Falls   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Niagara Falls from London**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Niagara Falls with Expedia today. ## Frequently asked questions ### How much is a flight from LHR to Niagara Falls Intl. Airport? > Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from Heathrow Airport to IAG was . Cheap tickets don't last long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport to Niagara Falls Intl. Airport (IAG)? > The majority of flights can be cancelled online, but every airline has different terms and conditions. If you do have to cancel your flight, go to our [Customer Service Portal](https://www.expedia.ca/helpcenter) and follow the instructions. ### How do I find cheap flights from Heathrow Airport (LHR) to Niagara Falls Intl. Airport (IAG) that have flexible change policies? > Plenty of carriers offer the option to move your flight without charging a fee. All you pay is the fare difference. When looking for London Heathrow to Niagara Falls Intl. Airport flights, you'll find a "No change fees" box for you to pick. ### How far is the flight from Heathrow Airport to IAG? > Hounslow to Niagara Falls is around 5,700 kilometres, so get ready to spend a while in the air. Don't forget to pack all the essentials, from your headphones to your hoodie. Take a couple of snacks to munch on throughout your flight too. ### Which airlines fly direct from Heathrow Airport (LHR) to Niagara Falls Intl. Airport? > You won't find any airlines flying directly between Heathrow Airport (LHR) and IAG, so be ready to make at least one stop on your journey. A layover can be a good way to break up a trip! ### Are Heathrow Airport to Niagara Falls Intl. Airport (IAG) flight tickets cheaper when they're purchased at the last minute? > Flight prices fluctuate, so there are no guarantees. While last-minute deals between Heathrow Airport and Niagara Falls Intl. Airport are of course possible, it also makes sense to keep track of prices well before you fly. In fact, some air carriers publish their prices up to a year before the departure date. 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