▸ The deal: WestJet promo code 5B4H5DD takes 20% off select base fares — booking ends October 13, 2026
▸ The catch: 20 blackout dates, three eligible fare classes, and base fare only (not taxes)
▸ The decision: how much you actually save, which fare to pick, and whether to use Flex Pay
The latest WestJet promo code, 5B4H5DD, gives you 20% off select base fares on flights within Canada and to the U.S., the sun destinations and Europe. WestJet's email pitches it as an extra 20% on top of fares that are already on sale. You have to book by October 13, 2026 at 11:59 p.m. Mountain Time — that's 1:59 a.m. Eastern on October 14 for readers in Ottawa and Toronto.
WestJet discount code
5B4H5DD
Book by Oct 13, 2026 (11:59 p.m. MT) · Travel Oct 9, 2026 – May 31, 2027
Should you book with this code? Quick check
Find your situation below before you open the booking page.
WestJet Fall Promo Code 2026
WestJet has actually used this same code for several weeks, expanding it each time. Earlier versions covered only Canada and the U.S. with travel through mid-December; the current version adds sun destinations and Europe and runs to May 31, 2027.
| Term | Details |
|---|---|
| Discount | 20% off select base fares |
| Book by | October 13, 2026, 11:59 p.m. MT |
| Travel window | October 9, 2026 – May 31, 2027 |
| Routes | Within Canada; Canada–U.S.; Canada–Mexico, Caribbean, Central and South America; Canada–Europe |
| Fare classes | UltraBasic, Econo, Premium (not EconoFlex or Business) |
| Flights | WestJet wholly operated only — no codeshare or interline |
| Not combinable with | Companion voucher bookings, group rate bookings |
WestJet Blackout Dates for This Promo (Oct 2026 – May 2027)
Blackout dates are the biggest limitation. The code can't be used on 35 days, clustered around Christmas and March Break.
Blackout days per month for code 5B4H5DD
Source: WestJet Deals & Offers terms for code 5B4H5DD, counted by The Canada Story.
Exact blackout dates
- ▸2026: November 16; December 17–23 and 26–30
- ▸January 2027: 2–4
- ▸February 2027: 11–13 and 19–20
- ▸March 2027: 5–6, 12–13, 20–21 and 25–29
- ▸April 2027: 2–4
Notice that December 24, 25 and 31 aren't on the list — flying on Christmas Eve, Christmas Day or New Year's Eve can be a way to use the code over the holidays. October and May have no blackouts at all.
How Much Will You Actually Save?
The 20% applies only to the base fare. Airport fees, taxes and other charges aren't discounted, so your real saving on the total price is less than 20%.
| Example one-way fare | Without code | With 5B4H5DD |
|---|---|---|
| Base fare | $200.00 | $160.00 |
| Taxes and fees (not discounted) | $80.00 | $80.00 |
| Total | $280.00 | $240.00 (about 14% less) |
Illustrative numbers only. Your actual base fare and taxes depend on route and date.
Watch the UltraBasic baggage trap
UltraBasic is usually the cheapest fare, but on domestic and U.S. flights it includes only a personal item that fits under the seat — no full-size carry-on and no checked bag. If you need a carry-on, Econo may end up cheaper once you add bag fees. On Europe routes, UltraBasic does include a carry-on.
How to Apply the WestJet Promo Code
Flex Pay: Book Now, Pay Monthly — Is It Worth It?
WestJet's email also promotes Flex Pay, a buy-now-pay-later option run by Upgrade. You choose "Pay Monthly" at checkout and can spread the cost over 3, 6, 9, 11 or 18 months.
Read before you click
Flex Pay's posted APRs range from 14.99% to 34.99%, depending on your credit. Promotional 0% offers appear occasionally, but not always. At a high rate, interest can wipe out a big chunk of the 20% you just saved. It requires a minimum $99 purchase, and a down payment may apply.
Flex Pay can make sense if you're offered 0% APR. Otherwise, paying with a credit card you clear in full each month is usually cheaper.
Bonus: WestJet Rewards eStore
Separately, WestJet Rewards members can earn up to 7 points per dollar shopping through the WestJet Rewards eStore until October 25, 2026 — useful if you're already buying from participating retailers.
Missed the Deadline? What to Expect Next
WestJet runs percentage-off code promotions regularly. In 2026 alone, it offered a 20% code in July, a 25% sun-destination code, and this code, which was extended and widened more than once. Once this one ends, these habits will help you catch the next one:
- ▸Bookmark westjet.com/deals — every active code and its blackout dates are listed there.
- ▸Join WestJet Rewards (free) to get sale emails and member-only fares.
- ▸Know your dates first — sales often end within days, and blackout dates decide whether a code helps you.
WestJet Promo Code FAQs
When does WestJet promo code 5B4H5DD expire?
You must book by October 13, 2026 at 11:59 p.m. Mountain Time, which is 1:59 a.m. Eastern on October 14.
Does the WestJet promo code work on taxes and fees?
No. The 20% applies only to the base fare. Taxes, airport charges and other fees are paid in full.
Can I use the code on EconoFlex or Business fares?
No. The code applies to UltraBasic, Econo and Premium fares only. The separate no-code sale does include EconoFlex and Business.
Does the code work for flights to Europe?
Yes. The current version covers WestJet-operated flights between Canada and Europe, along with Canada, the U.S., Mexico, the Caribbean, and Central and South America.
Can I combine the code with a WestJet companion voucher?
No. The discount can't be used on companion voucher bookings or group rate bookings.
Is Flex Pay interest-free?
Not usually. Rates range from 14.99% to 34.99% APR based on your credit, with occasional 0% promotions. Check the rate you're offered before accepting.
Can I fly on Christmas Day with this code?
Yes, December 24, 25 and 31 are not blackout dates. December 17–23 and 26–30 are.
Key Takeaways
▸ Code 5B4H5DD = 20% off base fares; book by Oct 13, 11:59 p.m. MT.
▸ 35 blackout days, mostly in December and March — check dates first.
▸ The discount skips taxes, and UltraBasic excludes a carry-on on most routes.