Deal alert: Fly to Madrid, Paris and other European cities from $323 round-trip

British Airways just released an end-of-summer sale that offers discounted fares on flights and vacation bundles to the U.K. and Europe.

Some of the highlights include round-trip flights from Boston to Madrid for as low as $323, as well as solid discounts on premium economy and business-class deals to dreamy destinations like Barcelona and London through partners like Iberia. The travel window for this deal is also generous, extending all the way to May of next year. That gives you ample opportunity to plan a fall getaway, a holiday excursion or even a spring jaunt across the Atlantic.

The lowest prices are for economy-class fares. On British Airways, that means you get a free carry-on bag.

Deal basics

Airline: British Airways
Routes: From Boston, Chicago, Los Angeles, New York and other U.S. cities to London, Madrid, Paris, Rome and other European cities
How to book: Through the British Airways website, where you can check routes and availability
Travel window: Now through May 2026
Book by: Sept. 18

Sample flights

When you go to the British Airways website, enter your departure city and preferred destination, along with your travel dates. You will see the lowest available fares over a two-month span.

From there, you can select your flights. One great flight we found was from New York's John F. Kennedy International Airport (JFK) to Paris-Orly Airport (ORY) in January, with a layover in Madrid, starting at $413 round-trip. In general, January had the best availability for this route at this reduced price.

We also found good options and discounts on flights from Boston to Spain. This itinerary from Boston Logan International Airport (BOS) to Adolfo Suárez Madrid-Barajas Airport (MAD) in November (right before Thanksgiving) costs just $323 round-trip. There is a layover in London.

This same route is available at the same low price in early December.

Most of the best prices in this deal are for flights with layovers, but this nonstop route from New York to Barcelona is an exception. In December, it is available for just $355 round-trip from JFK to Josep Tarradellas Barcelona-El Prat Airport (BCN).

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If you're looking to book a premium economy seat on an overseas flight, we also found lots of good options from New York to London. This nonstop premium economy itinerary in mid-January from JFK to London's Heathrow Airport (LHR) is available from $1,265 round-trip — and that pricing remains widely available in January and February.

For those travelers looking to travel overseas in style, British Airways has its Club World business-class tier discounted for some popular routes, such as BOS-LHR from $2,910 and JFK-LHR from $3,009.

Finally, you can save up to $400 when you book a flight, hotel and car rental bundle through British Airways' website. These vacation packages focus on cities like London and Rome, letting you book airfare and hotel stays for less than $900. The deadline to earn this discount is Sept. 8, so make sure to check out the vacation packages now to take advantage of the sale prices.

Maximize your purchase

Don't forget to use a credit card that earns bonus points on airfare purchases to cover your taxes and fees, such as:

• Chase Sapphire Preferred® Card (see rates and fees): 2 points per dollar spent on travel
• American Express® Gold Card: 3 points per dollar spent on airfare when booked directly with the airline or through amextravel.com
• The Platinum Card® from American Express: 5 points per dollar spent on airfare when booked directly with the airline or through American Express Travel® (on up to $500,000 of these purchases per calendar year, then 1 point per dollar)
• Chase Sapphire Reserve® (see rates and fees): 8 points per dollar spent on flights booked through Chase Travel℠ and 4 points per dollar spent on flights booked directly with the airline

Bottom line

This sale gives travelers a wide range of options to score big discounts on economy fares and business-class travel. As always with these types of deals, the quicker you book, the better your chance of getting the best prices.

Related reading:

• The best time to book flights for the cheapest airfare
• Best airline credit cards
• What exactly are airline miles, anyway?
• 6 real-life strategies you can use when your flight is canceled or delayed
• Maximize your airfare: The best credit cards for booking flights
• The best credit cards to reach elite status