WestJet
WestJet is Canada's number two airline, holding domestic share alongside Air Canada.
On the record
Checkpoint: Flight attendant strike deadline for CUPE Local 8125, covering 4,400 mainline crew
The call
WestJet's domestic position looks steady next to Air Canada, but a possible August strike, a 2025 data breach lawsuit, and Porter's growth on premium routes are the pressure points to watch.
WestJet flies passengers across Canada and operates in a two-company market with Air Canada, where government rules, airport gates, and the cost of planes create high barriers that keep new rivals out for the next few years. The real problem is that airlines make thin profits even when they have few competitors, Onex controls most of the company and may want to sell it, and a strike deadline on August 2, 2026 plus cheaper airlines like Flair stealing some routes mean the airline will keep running but won't make investors much money. If Onex decides to take the company public or sell it, or if Porter Airlines grows much faster on premium routes, the picture could shift.
Why
01
AI pressure: AI travel-planning agents (Google Flights AI, ChatGPT-style booking assistants). AI agents that book flights directly could pull traffic away from westjet.com and squeeze fare visibility, but this is early and unproven in Canada. Could AI do the core job? Unlikely.
02
Bigger players: Air Canada. Air Canada and WestJet already split over 80% of Canadian domestic flying, so growth for one usually means pressure on the other's routes and fares. Could a giant copy it? No, they are blocked.
03
What protects it. Landing slots, regulatory approval hurdles, and the huge capital cost of running an airline keep new domestic rivals from scaling fast.
What would change this call
Porter Airlines' reported share on premium Canadian domestic routes over the next 4-6 quarters. Would show whether WestJet is losing higher-margin customers to a smaller rival.
Outcome of the August 2, 2026 flight attendant strike deadline (walkout vs. resolution). Would show whether labor disruption pushes travelers to Air Canada or Porter.
Any public move by Onex toward an IPO or sale of its WestJet stake within the next year. Would show whether WestJet's ownership structure is stabilizing or seeking an exit.
Outcome of the August 2, 2026 flight attendant strike deadline (walkout vs. resolution). Would show whether labor disruption pushes travelers to Air Canada or Porter.
Any public move by Onex toward an IPO or sale of its WestJet stake within the next year. Would show whether WestJet's ownership structure is stabilizing or seeking an exit.
Key numbers
- WestJet and Air Canada hold over 80% of Canadian domestic market
- Onex retains 75% ownership after selling stakes to Delta, Korean Air, Air France-KLM
- 99.4% of flight attendants voted for a strike mandate
Named risks
- Flight attendant strike possible from August 2, 2026 disrupting long-weekend operations.
- Active US and Canadian litigation and regulatory scrutiny over 2025 data breach affecting 5.16M+ people.
- Onex retains 75% control limiting near-term liquidity or exit path for other stakeholders.
- Reputational backlash risk from cost-cutting moves, as seen with reversed cabin densification, Jan 2026.
- President/COO retirement announced May 2026 creates leadership transition uncertainty.
Rivals, as read in July 2026
| Rival | Direction | Evidence |
|---|---|---|
| Air Canada | contesting | Forms 80%+ domestic duopoly with WestJet per Competition Bureau opinion paper, n.d. |
| Porter Airlines | gaining on | Tripled domestic market share to nearly 10% between 2023 and 2024, per CBC, 2024-06-30 |
| Flair Airlines | contesting | Leads Canadian airlines in reliability ranking as of 2025-02-06, pressuring WestJet's discount segment |
Questions people ask
- Is WestJet profitable in 2026?
- WestJet does not publish full financials as a private company, but it returned employee profit-sharing in November 2023 for the first time since the pandemic, signaling restored profitability. S&P-disclosed revenue reached roughly C$7.3 billion for 2024, per a 2026-04-26 analyst report.
- Who owns WestJet?
- Onex Corporation took WestJet private in December 2019 for about C$5 billion and still holds 75% control. On October 22, 2025, Delta Air Lines (12.7%), Korean Air (10%), and Air France-KLM (2.3%) closed a combined US$550 million purchase of minority stakes.
- Could AI replace WestJet's business?
- No. WestJet's core is regulated, unionized flight operations, aircraft, slots, and labor contracts that AI cannot substitute. AI is limited to customer service, via its 'Juliet' chatbot launched in 2018 that reportedly handled about 75% of Facebook Messenger queries as of a 2020 case study.
- Who is WestJet's biggest competitor?
- Air Canada, together with WestJet, controls over 80% of the Canadian domestic market per a Competition Bureau opinion paper, forming a duopoly. From below, Porter Airlines tripled its domestic market share to nearly 10% between 2023 and 2024, per CBC reporting dated June 30, 2024.
- Will WestJet flight attendants go on strike in 2026?
- As of July 24, 2026, WestJet mainline flight attendants (CUPE Local 8125) had voted 99.4% in favor of a strike mandate on July 15, 2026, with a legal strike possible from August 2, 2026, coinciding with a long weekend; WestJet offered fee-free rebooking for affected dates.
- Did WestJet have a data breach?
- Yes. A June 12-13, 2025 breach affected approximately 5.16 million Canadian customers and employees, plus a separate US class action covering 1.2 million customers. On July 14, 2026, WestJet committed to stronger security measures following a Canadian Privacy Commissioner investigation.
Timeline
- 2026-07-24WestJet offers fee-free rebooking as strike threat looms ahead of Aug 2 deadline
- 2026-07-15WestJet flight attendants vote 99.4% for strike mandate, 97.3% turnout
- 2026-07-14Privacy Commissioner concludes investigation, WestJet commits to security upgrades
- 2026-06-22Lewis v. WestJet anti-harassment class action settlement agreement executed
- 2026-05-27President and COO Diederik Pen announces planned retirement
- 2026-04-08New interline booking capability launched with Copa Airlines
- 2026-01-16WestJet reverses 28-inch cabin densification plan on 43 Boeing 737s
- 2025-10-22Onex closes sale of stakes to Delta, Korean Air and Air France-KLM
- 2023-11-24WestJet returns employee profit-sharing for first time since pandemic
- 2019-12Onex completes ~C$5 billion take-private of WestJet at $31 per share
Revision history
24 July 2026
First assessed. Protection under test. The text above is fixed as of this date and is not edited afterwards.
In the same band
Sources
- Competition Bureau opinion paper
- Fleet Strategy, Route Network & Company Analysis Report 2026 (2026-04-26)
- WestJet (Wikipedia) (2026-07-24)
- Onex Partners and its affiliated funds and co-investors close sale of equity stake (2025-10-22)
- A winning strategy rewards everyone (2023-11-24)
- Who we are
- WestJet allowing travellers to reschedule or cancel bookings as strike threat looms (2026-07-24)
- A WestJet strike could affect travel plans, says expert. Here's what to know (2026-07-15)
- News release: WestJet commits to improving security measures following Privacy Commissioner investigation (2026-07-14)
- All results (2026-05-27)
- WestJet Customer Satisfaction Takes Off (2020-07-27)
- The new airline rivalries: Air Canada vs. Porter, WestJet vs. Flair (2024-06-30)