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BFS - BOS

$597 Find cheap flights from Belfast Intl Airport to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to Boston departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 6/6
Thu 6/13

Search hundreds of travel sites at once for deals on flights to Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Boston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Boston, as well as popular online travel agencies
In the last 7 days travelers have searched 42,573,820 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Flights from Belfast Intl to Boston - Travel Insights & Trends

Get data-powered insights and trends into flights from Belfast Intl to Boston to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Belfast Intl Airport to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Belfast Intl Airport to Boston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Belfast Intl Airport to Boston is April, where tickets cost $568 on average. On the other hand, the most expensive months are August and May, where the average cost of tickets is $940 and $785 respectively.

Good to know

Low season

February

High season

June

Cheapest flight

$597
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Belfast Intl Airport to Boston

When to book flights from Belfast Intl to Boston

Are your dates flexible? Find out the best times to travel from Belfast Intl to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Belfast Intl Airport to Boston flights

  • What is the cheapest flight from Belfast Intl Airport to Boston?

    In the last 3 days, the lowest price for a flight from Belfast Intl Airport to Boston was $597 for a one-way ticket.

  • Do I need a passport to fly between Belfast Intl Airport and Boston?

    A passport is required to fly from Belfast Intl Airport to Boston.

  • Which aircraft models fly most regularly from Belfast Intl Airport to Boston?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Belfast Intl Airport to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast Intl Airport to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast Intl Airport to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Belfast Intl Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast Intl Airport to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to Belfast Intl Airport with another airline. Booking your flights between Belfast Intl Airport and BOS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast Intl Airport to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Belfast Intl Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Belfast to Boston

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Belfast to Boston found on KAYAK in the last 72 hours.
8/4Sun
2 stops
24h 50mBFS-BOS
$597
8/4Sun
3 stops
30h 01mBFS-BOS
$651
8/4Sun
1 stop
19h 10mBFS-BOS
$779

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Belfast Intl Airport - Boston Flights

Departure:

Belfast Intl Airport (BFS)United Kingdom

Destination:

Boston (BOS)United States

Return flight deals:

Boston - Belfast Intl Airport

Cabin classes: