Now, while travel might be on hold for many of us, is an especially good time to learn new ways to travel at a discount.

That's where the American Express International Airline Program comes in. This occasionally overlooked program is great for saving money when booking international flights. On some itineraries, you might even save more than 50% off the airline’s price.

Here’s how to save on flights by booking through the American Express International Airline Program.

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What is the American Express International Airline Program?

The American Express IAP is an airline discount program for certain American Express cardholders. Travelers can save hundreds — or even thousands — of dollars when purchasing premium economy, business class and first-class flights on participating international airlines.

In order to get the discount, you’ll need to purchase your flights through AmEx Travel while logged into a qualifying AmEx account (more on eligibility below). Flights can be booked online or over the phone. There is a $39 fee for booking over the phone, but this fee is waived for Centurion® cardholders.

How it works

Eligibility

To get access to the program, you need to have a Platinum or Centurion® branded card. This excludes co-branded Platinum cards like the Delta SkyMiles® Platinum American Express Card. For most cardholders, that means you’ll need either The Platinum Card® from American Express or The Business Platinum Card® from American Express to qualify.

You’ll also need to pay for the flight in full with an American Express Card in the U.S. Platinum Card Member’s or U.S. Centurion® member’s name. That means that you don’t necessarily need to use The Platinum Card® from American Express or The Business Platinum Card® from American Express to pay for the flights but you might want to anyway.

Both The Platinum Card® from American Express and The Business Platinum Card® from American Express earn 5x points on airfare purchases through AmEx Travel and your trip will be covered travel protections to both of these cards. Between solid earnings and travel protections, The Platinum Card® from American Express and The Business Platinum Card® from American Express have become go-to cards for booking flights for those looking to earn American Express Membership Rewards points. Terms apply.

Participating airlines

There are currently 26 airlines that participate in IAP.

Full Airline List

AeroMexico.Air China.Air France.Air New Zealand.Alitalia.All Nippon Airways (ANA).Asiana Airlines.Austrian.British Airways.Brussels Airlines.Cathay Pacific.China Airline.Delta.Emirates.Etihad.Iberia.Japan Airlines.KLM.LATAM.Lufthansa.Qantas.Qatar.Singapore Airlines.South African Airways.SWISS.Virgin Atlantic.

Other restrictions

Departure & Arrival Airports

You must book a flight that originates in — and returns to — a U.S. airport or “select Canadian gateways.” These Canadian gateways aren’t listed. We have found from performing searches that at least Toronto (YYZ), Vancouver (YVR) and Montreal (YUL) are included.

One Way vs. Round-Trip Fares

Per the terms and conditions, the program generally requires a round-trip booking, but “one-way travel is permitted on some airlines.” Again, these airlines aren’t listed. From searches, we’ve found that you can book discounted one-way fares on at least Air France, Austrian Airlines, Brussels Airlines, Cathay Pacific, Delta, Iberia, Japan Airlines, Lufthansa and Qantas.

For example, you can fly from Los Angeles (LAX) to Tokyo Haneda (HND) in Delta premium economy for just $444 one-way through the American Express IAP:

Additional Passenger Allowance

You can apply the discount to book travel for yourself and up to seven additional passengers. However, the Platinum or Centurion® cardmember must be one of the travelers on the itinerary. That means you can’t use this discount to help friends or family book a discounted getaway on their own. Terms apply.

Example savings

Just how powerful is the American Express IAP? Many premium economy and business class itineraries that we found are discounted around $200 round-trip. Meanwhile, first class fares could be discounted by thousands of dollars.

Let’s show some examples of how you can save.

Premium Economy

One of the most comfortable ways to fly to Asia without breaking the bank is by flying Japan Airlines Premium Economy Class. You can save hundreds of dollars off of the already-reasonable prices by booking these flights through IAP.

Photo by JT Genter.

For example, Japan Airlines premium economy fares for flights from Los Angeles (LAX) to Tokyo Haneda (HND) are currently discounted by more than 50% when booked through the program. The airline is selling these flights for $1,739 round-trip, but it costs just $826 round-trip on the AmEx travel portal:

These aren’t false discounts off of overinflated airfare prices either. The $1,739 “strikethrough” price is the price that you’ll find when searching for these flights on Google Flights or the airline’s website itself:

Business Class

Business class travelers can also use this program to save hundreds of dollars when flying between the U.S. and Europe. For example, you can shave $165 off of an already-discounted round-trip nonstop flight from Boston (BOS) to Paris (CDG):

Or, you can fly to Rome in business class for under $2,000 round-trip. This itinerary between New York-JFK and Rome (FCO) is discounted from $2,132 round-trip to $1,992 round-trip: