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Air Canada is the official Canadian airline for this event, offering special discounts to delegates attending the 2022 COS Annual Meeting & Exhibition for travel to and from Halifax, Nova Scotia between Wednesday, June 1, 2022, and ends Sunday, June 19, 2022.

The promotion code X9HGBQK1 must be entered during online booking. To book a flight with your promotion code, access and enter your promotion code in the Promotion Code Box.


Applicable Rules: 

• The booking is to be made to the following city: Halifax, YHZ (NS)

• The travel period begins Wednesday, June 01, 2022, and ends Sunday, June 19, 2022. 

• Travel is valid Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday. 

• For North America: 5% applies on standard fares, 10% on flex fares & higher.

• For International Travel: 10% on standard fares & higher. 

If the Promotion Code is not entered or is entered incorrectly, the Discounts will not be applied to the booking.


WestJet is able to offer 5% off Econo* and 10% off EconoFlex and Premium fares for travel within Canada and 2% off Econo*, 5% off EconoFlex and 10% off Premium base fares for guests travelling Trans-border. To take advantage of this offer, you will need the discount code listed. Please visit to make a booking online.

Applicable Rules

• The booking is to be made to the following city: Halifax 

• The travel period begins: 6/2/2022

•The travel period ends: 6/19/2022

• No discount will apply to Basic or Business class bookings. 

Coupon Code: Guest web/Travel Agent web: D44UJ83

Promo Code: Travel Agent GDS only: YBB12


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Porter Airlines is proud to offer a 10% discount on available base fares (with the exception of the lowest class fare during a public seat sale) for travel to and from the Canadian Ophthalmological Society 2022 Annual Meeting & Exhibition. The discounted fares are available for booking from December 07, 2021 to June 13, 2022 and available for travel:

Location: Dates of Travel:


From: All MarketsTo: Halifax (YHZ)From: 07Jun22To: 12Jun22
From: Halifax (YHZ)To: All MarketsFrom: 08Jun22To: 13Jun22

Please book online at or through your travel agent using promo code “COS22”.

Porter offers complimentary in-flight snacks and beverages (including beer and wine), GatePorter service for carry-on and access to the Porter Lounge in Toronto where free Wi-Fi and comfortable, leather seating is available.

Porter’s fare rules and conditions apply. For any questions regarding Porter’s services or any pre-travel concerns, contact us at 1-888-619-8622.