$659 Cheap Flights from Reykjavik (KEF) to Buffalo (BUF)

View $659 flight on Thu, Nov 13, 2025Opens in a new window

Popular airlines from Reykjavik–Keflavik Intl. Airport (KEF) to Buffalo Niagara Intl. Airport (BUF)

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Cheap Flights from Reykjavik to Buffalo (KEF-BUF)

Prices were available within the past 7 days and start at $659 for one-way flights and $840 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Thu, Aug 21 - Thu, Aug 28
KEF
Reykjavik
BUF
Buffalo
$840 Roundtrip, found 2 hours ago
$840
Roundtrip
found 2 hours ago
Select Icelandair flight, departing Thu, Aug 21 from Reykjavik to Buffalo, returning Thu, Aug 28, priced at $840 found 2 hours ago
Air Canada
Thu, Aug 21 - Thu, Aug 28
KEF
Reykjavik
BUF
Buffalo
$841 Roundtrip, found 2 hours ago
$841
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Thu, Aug 21 from Reykjavik to Buffalo, returning Thu, Aug 28, priced at $841 found 2 hours ago
Air Canada
Thu, Aug 21 - Thu, Aug 28
KEF
Reykjavik
BUF
Buffalo
$843 Roundtrip, found 2 hours ago
$843
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Thu, Aug 21 from Reykjavik to Buffalo, returning Thu, Aug 28, priced at $843 found 2 hours ago
Air Canada
Thu, Aug 21 - Thu, Aug 28
KEF
Reykjavik
BUF
Buffalo
$848 Roundtrip, found 2 hours ago
$848
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Thu, Aug 21 from Reykjavik to Buffalo, returning Thu, Aug 28, priced at $848 found 2 hours ago
Air Canada
Thu, Aug 21 - Thu, Aug 28
KEF
Reykjavik
BUF
Buffalo
$850 Roundtrip, found 2 hours ago
$850
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Thu, Aug 21 from Reykjavik to Buffalo, returning Thu, Aug 28, priced at $850 found 2 hours ago
Air Canada
Thu, Aug 21 - Thu, Aug 28
KEF
Reykjavik
BUF
Buffalo
$857 Roundtrip, found 2 hours ago
$857
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Thu, Aug 21 from Reykjavik to Buffalo, returning Thu, Aug 28, priced at $857 found 2 hours ago
Delta
Thu, Apr 30 - Thu, May 7
KEF
Reykjavik
BUF
Buffalo
$858 Roundtrip, found 4 days ago
$858
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Apr 30 from Reykjavik to Buffalo, returning Thu, May 7, priced at $858 found 4 days ago
Icelandair
Thu, Aug 21 - Thu, Aug 28
KEF
Reykjavik
BUF
Buffalo
$860 Roundtrip, found 2 hours ago
$860
Roundtrip
found 2 hours ago
Select Icelandair flight, departing Thu, Aug 21 from Reykjavik to Buffalo, returning Thu, Aug 28, priced at $860 found 2 hours ago
Lufthansa
Thu, Apr 30 - Thu, May 7
KEF
Reykjavik
BUF
Buffalo
$865 Roundtrip, found 4 days ago
$865
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Thu, Apr 30 from Reykjavik to Buffalo, returning Thu, May 7, priced at $865 found 4 days ago
Virgin Atlantic
Thu, Apr 30 - Thu, May 7
KEF
Reykjavik
BUF
Buffalo
$865 Roundtrip, found 4 days ago
$865
Roundtrip
found 4 days ago
Select Virgin Atlantic flight, departing Thu, Apr 30 from Reykjavik to Buffalo, returning Thu, May 7, priced at $865 found 4 days ago
Flights from Reykjavik (KEF) to Buffalo (BUF)
Origin airport
Keflavik Intl.
Destination airport
Buffalo Niagara Intl.
Roundtrip price
$840
Distance
2604 mi

Reykjavik to Buffalo Flights

The cheapest times to fly from Reykjavik to Buffalo

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 Reykjavik to Buffalo are during the month of August. You can find some of the cheapest flights from Reykjavik to Buffalo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Reykjavik to Buffalo

Sunday is one of the best days to book for cheap flights from Reykjavik to Buffalo: 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 Reykjavik to Buffalo

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 Reykjavik to Buffalo in 2025. You can also book with separate airlines for your outbound and return journeys, from $659 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 Reykjavik to Buffalo 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 Reykjavik to Buffalo 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 Keflavik Intl. Airport (KEF) to Buffalo Niagara Intl. Airport (BUF) cost?
Discover the latest flight deals from KEF to BUF 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 KEF to BUF?
The cheapest flights from KEF to BUF 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 KEF to BUF?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from KEF to BUF. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Keflavik Intl. Airport (KEF) to Buffalo Niagara Intl. Airport (BUF)?
Nonstop flights from Keflavik Intl. Airport (KEF) to Buffalo Niagara Intl. Airport (BUF) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from KEF to BUF?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change 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 Keflavik Intl. Airport (KEF) to Buffalo Niagara Intl. Airport (BUF)?
To arrive at Buffalo Niagara Intl. Airport (BUF) on schedule, choose a flight that takes off from Keflavik Intl. Airport (KEF) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Keflavik Intl. Airport (KEF) to Buffalo Niagara Intl. Airport (BUF) last-minute?
Waiting until just before your departure to book your flight from KEF to BUF often results in higher prices. Although you may find some last-minute deals, there's no guarantee. Be flexible with your itinerary to boost your chances of scoring a bargain.
Is it cheaper to book a KEF to BUF flight and hotel package?
Securing a KEF to BUF flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our wide range of stays and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Keflavik Intl. Airport (KEF) to Buffalo Niagara Intl. Airport (BUF)?
Typically, it's possible to cancel or reschedule your KEF to BUF flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.