Business class flight deals work similarly to economy class deals but with a focus on providing premium services and comforts to passengers. Airlines often offer discounted business class fares to attract travellers who want a more luxurious flying experience without paying the full price. Here’s how it generally works:

1. Sales and Promotions: Airlines periodically offer sales and promotions on business class seats. These deals can be found on the airline’s official website, through travel agencies, or on online travel platforms.
2. Advance Booking: Like economy class fares, booking your business class ticket well in advance can help you secure better deals. Airlines often have different fare classes with varying prices, and the cheapest seats tend to sell out quickly.
3. Flexible Travel Dates: If your travel dates are flexible, you might be able to find better deals. Midweek flights and off-peak travel seasons can offer lower prices.
4. Mileage and Loyalty Programs: If you’re a frequent flyer or a member of an airline’s loyalty program, you might have access to discounted business class fares through points, miles, or special offers.
5. Bundled Packages: Some travel agencies and online platforms offer bundled packages that include business class flights, hotel accommodations, and other amenities. These packages can sometimes offer better overall value than booking each component separately.
6. Last-Minute Deals: Occasionally, airlines may release last-minute business class deals to fill up unsold seats. However, this approach can be risky, as availability is not guaranteed.

As of my last knowledge update in September 2021, here are some major airlines known for their business class offerings from the USA:

1. Emirates: Known for its luxurious business class cabins, Emirates offers spacious seats that can recline into fully flat beds. They provide top-notch amenities and services, including in-flight bars on some aircraft.
2. Qatar Airways: Qatar Airways’ Qsuite business class offers private suites with sliding doors, providing a high level of privacy and comfort. It’s considered one of the best business class products globally.
3. Singapore Airlines: Renowned for its exceptional service, Singapore Airlines offers a comfortable and elegant business class experience with spacious seats, top-notch entertainment, and gourmet dining.
4. Cathay Pacific: Cathay Pacific’s business class cabins are designed for comfort and privacy, featuring lie-flat seats, direct aisle access, and a range of entertainment options.
5. Delta One: Delta Airlines’ business class, known as Delta One, offers lie-flat seats, premium dining options, and access to its Delta Sky Club lounges.
6. United Polaris: United Airlines’ Polaris business class features lie-flat seats, direct aisle access, and enhanced dining options. They also provide access to their Polaris lounges.