British Airways and Porter Airlines Launch New Codeshare Agreement

British Airways and Porter Airlines have announced a new codeshare agreement, handing the British carrier a direct route into Porter's fast-growing Canadian network.

As of June 24, 2026, British Airways customers can book 17 Porter destinations across Canada under a British Airways flight number. The flights are on sale now at ba.com, with travel from July 8, 2026.

What caught my eye is the loyalty side. Members of The British Airways Club earn Avios and tier points on these Porter-operated flights, which quietly turns Porter's domestic map into a way to build an Avios balance.

What's Included in the Codeshare

A codeshare lets one airline sell seats on another airline's flights under its own code. Here, British Airways is putting its code on Porter-operated flights inside Canada, then selling them as connections on a single ticket.

British Airways already flies from London to Toronto, Montreal, and Vancouver. This deal extends its reach to 17 Canadian cities, with passengers connecting onto Porter via Toronto or Montreal.

The 17 destinations now bookable under the British Airways code are:

• Calgary (YYC)
• Charlottetown (YYG)
• Deer Lake (YDF)
• Edmonton (YEG)
• Halifax (YHZ)
• Kelowna (YLW)
• Montréal-Trudeau (YUL)
• Montréal Metropolitan (YHU)
• Ottawa (YOW)
• Québec City (YQB)
• Saskatoon (YXE)
• St. John's (YYT)
• Thunder Bay (YQT)
• Toronto Pearson (YYZ)
• Vancouver (YVR)
• Victoria (YYJ)
• Winnipeg (YWG)

Because the flights sell as a connection from the British Airways network, a standalone search like Toronto (YYZ) to Calgary (YYC) won't surface them. The Porter leg shows up only when it follows a British Airways flight from London, as in the search below.

The result is a British Airways flight from London to Toronto, then a Toronto to Calgary leg flown by Porter under the British Airways number BA 4150. One ticket, one baggage policy, and luggage checked through to the final stop.

Earning Avios and Tier Points

The earning side is what makes this interesting for Canadians. Because these legs are sold under a British Airways code, the rules are clear-cut.

British Airways' own policy is that you collect Avios on any flight booked under its code, no matter who operates it. Earning runs on the price of your British Airways fare, so a pricier ticket pulls in more Avios and tier points than a deep-discount one.

A one-way from London to Calgary priced at £1,336.79 earns a Blue member 7,068 Avios and 1,404 tier points across the whole itinerary, the Porter leg included. Because it prices as one through-fare, the Avios aren't split between the British Airways and Porter segments.

Add your British Airways Club number to the booking and everything posts to one account. Blue members earn 6 Avios per £1 of fare, climbing to 9 per £1 for Gold, so treat the Blue figures as the floor.

Avios is one of the easier currencies for Canadians to build. American Express Membership Rewards and RBC Avion both transfer to The British Airways Club at 1:1, and the RBC British Airways Visa Infinite earns Avios directly on every purchase.

If you've been sitting on Avios and weren't sure where to spend them, it's worth brushing up on how to search and book the program's sweet spots.

Why Porter Is Worth the Connection

Porter isn't your typical regional feed. Its fleet of Embraer E195-E2 jets flies a 132-seat cabin that the airline brands as Elevated Economy.

There are no middle seats, since every row is laid out two-by-two. Wi-Fi is free for everyone on board, and beer and wine come included in economy, poured into proper glassware rather than plastic.

For a British Airways customer used to a cramped European hop, the onward Porter leg should feel like a step up rather than a downgrade.

A Growing oneworld Footprint for Porter

Porter keeps stacking up partnerships with oneworld airlines. It already works with American Airlines, Alaska Airlines, Qatar Airways, and Japan Airlines, and British Airways now joins that list.

None of this makes Porter a oneworld member, at least not yet. But each new tie-up with a oneworld carrier makes the speculation about an eventual membership harder to wave off.

It also fits Porter's wider push. The airline now serves more than 40 destinations across North America, Central America, and the Caribbean, and it recently became the launch carrier at Montreal's new Metropolitan Airport.

Conclusion

For now, the deal runs one way. The announcement covers British Airways selling Porter's flights, with no word yet on Porter placing its code on British Airways, so the immediate winner is the British visitor flying into Toronto or Montreal rather than the Canadian heading to Europe.

The bigger story is what it signals. Avios and tier points on Porter, plus a fifth oneworld partner in the stable, all point in the same direction.

What I'd watch next is whether Porter starts selling onward British Airways flights to Europe, and whether VIPorter earning shows up on the British Airways side. If both land, the oneworld question stops being an if and becomes a when.