WestJet Carry-On Rules: Size, UltraBasic & Personal Item

Quick answer: WestJet's standard carry-on limit is 22 × 14 × 9 inches (56 × 36 × 23 cm), including wheels and handles. Most standard WestJet fares include one overhead carry-on plus one personal item. UltraBasic normally includes only one personal item, with limited exceptions. Your personal item must fit under the seat, and WestJet's current Canadian guidance lists a maximum of 16 × 13 × 6 inches (41 × 33 × 15 cm).

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Last reviewed: July 27, 2026. Airline rules, fare inclusions, aircraft limits, and fees can change. Confirm the operating carrier and baggage allowance shown in your booking before departure.

WestJet Carry-On Size at a Glance

WestJet states that carry-on items must fit in its baggage sizer. Measure the complete exterior of the packed bag, not just the shell. Fixed handles, telescoping-handle housing, wheels, feet, corner guards, and bulging pockets are all part of the real measurement.

For the latest policy language, consult WestJet's official carry-on baggage page. This guide explains how to apply the rule when choosing and packing a bag.

What Changed in WestJet's Carry-On Dimensions?

WestJet changed its published carry-on size on May 6, 2025. The former maximum was 21 × 15 × 9 inches. The current maximum is 22 × 14 × 9 inches. In practical terms, the permitted height increased by one inch while the permitted width decreased by one inch. Depth remained nine inches.

This detail matters because an older suitcase may have been sold around the previous shape. A bag measuring 21 × 15 × 9 inches can be too wide for the current 14-inch limit even though its total linear dimensions appear similar. Rotate the bag only if all three sides match the sizer's corresponding dimensions; rotation does not make a 15-inch side fit a 14-inch opening.

The change also means a familiar U.S.-style 22 × 14 × 9 carry-on is now a logical starting point for WestJet. Still, “22-inch carry-on” on a product page is not enough. Verify the listed exterior dimensions and leave packing margin, especially with softside luggage or an expansion zipper.

Which WestJet Fares Include a Carry-On?

WestJet's regular fare families—including Econo, Member Exclusive, EconoFlex, Premium, PremiumFlex, Business, and BusinessFlex—normally permit one standard carry-on and one personal item on WestJet-operated flights. The important exception is UltraBasic.

UltraBasic normally includes one personal item only. The item must fit under the seat in front of you. A roller, large duffel, or backpack that requires the overhead bin is not automatically permitted just because it meets the standard carry-on dimensions.

WestJet publishes two important UltraBasic exceptions. A carry-on may be included for travel to or from Europe and Asia. A traveler who purchases Extended Comfort for all flights in one direction, including connections, may also receive an overhead carry-on allowance. Read the conditions shown in your exact booking because an itinerary, operating carrier, or incomplete add-on can change what applies.

Do not plan to arrive at the airport and simply purchase an UltraBasic carry-on as though it were a normal optional bag. WestJet warns that a disallowed carry-on presented at the gate must be checked and can trigger both the checked-bag charge and an additional service fee. The safer choices are to pack within the personal-item allowance, select a fare that includes an overhead bag, or qualify for a published exception before travel.

Does WestJet Allow a Carry-On and a Backpack?

Yes, when your fare includes one carry-on plus one personal item. The carry-on belongs in the overhead bin. The backpack must be small enough to qualify as the personal item and fit fully under the seat. A full-size travel backpack is not automatically a personal item merely because it has shoulder straps.

On UltraBasic, a backpack can be your included personal item if it stays within the under-seat limit. A second overhead roller is generally not included unless your trip qualifies for one of WestJet's exceptions. If you also carry a purse, camera case, or laptop sleeve, consolidate it inside the personal item before boarding unless WestJet identifies it as an exempt item.

For safer options, compare our personal item bags and underseat carry-on luggage. Pack the bag before measuring it; soft backpacks frequently become too deep after the front compartment is filled.

How Strict Is WestJet With Carry-On Size?

WestJet provides baggage sizers and requires items to fit. Enforcement can vary by airport, flight load, aircraft, and how obviously oversized a bag appears, but travelers should not use inconsistent past experiences as a packing strategy. A bag that passed unnoticed on one trip can be measured on another.

The 14-inch width and 9-inch depth are common failure points. Wheels make the total height exceed 22 inches, stuffed exterior pockets push depth beyond nine inches, and side handles can make an otherwise suitable shell wider than 14 inches. An expanded bag is especially risky because the expansion panel often adds one to two inches of depth.

A compliant bag can still be gate checked when overhead space is unavailable or the aircraft has smaller bins. Keep identification, medication, travel documents, valuables, keys, fragile items, and cabin-required batteries in your personal item. That way an operational gate check does not separate you from essentials.

Does WestJet Have a Carry-On Weight Limit?

WestJet's carry-on guidance focuses on size and your ability to place the bag in the overhead bin without assistance rather than publishing a simple universal carry-on weight number on the Canadian carry-on page. That does not mean unlimited weight. A bag you cannot safely lift can be refused or checked, and partner-airline rules may impose a specific limit.

Pack for control, not merely for the largest possible capacity. Dense items such as shoes, books, chargers, and toiletry bottles can make a compact suitcase difficult to lift. Move a small amount of weight into the personal item only if both bags remain within their limits and you can handle them safely.

For connections, verify the operating carrier on every segment. A ticket sold by WestJet can include a flight operated by another airline, and the operating carrier's cabin-baggage rule may control that segment. Our international carry-on rules guide explains why a smaller, lighter setup is safer for mixed-carrier itineraries.

How to Measure a Carry-On for WestJet

1. Pack the suitcase normally. An empty softside bag can measure very differently after its pockets and corners are filled.
2. Close the expansion zipper. Unless the expanded exterior remains within 22 × 14 × 9 inches, leave it closed for the flight.
3. Measure height from the floor to the highest fixed point. Include wheels, feet, and the top handle with the telescoping handle retracted.
4. Measure the widest point. Include fixed side handles and protruding corner protection.
5. Measure the deepest point. Include front pockets and any bulge created by packing.
6. Test the personal item separately. It must fit under the seat; do not count on putting both bags overhead.

If a bag exactly matches every maximum while empty, it has no practical tolerance. A slightly smaller exterior reduces stress at the sizer and helps on partner airlines. Compare our 22 × 14 × 9 carry-on luggage, 20-inch carry-ons, and international carry-on luggage after checking all listed exterior measurements.

Best Bag Strategy by WestJet Trip Type

Standard WestJet fare within Canada or the United States

A non-expanded 22 × 14 × 9-inch roller plus a compact personal item is the natural setup. Leave a little room in both bags so pockets do not bulge. Keep the personal item organized for security and possible gate checking.

UltraBasic without an exception

Use one true under-seat bag and treat 16 × 13 × 6 inches as the planning ceiling based on WestJet's current Canadian guidance. Six inches of depth is much slimmer than many casual backpacks. Focus on a flexible but not overstuffed design, and wear bulky clothing rather than forcing it into the front pocket.

WestJet plus an international partner

Choose the smallest limit across the entire itinerary. A compact 20-inch suitcase is often easier to use across airlines than a bag built to WestJet's exact maximum. Check weight as well as size because international partners frequently publish limits that differ from WestJet's approach.

Regional aircraft or full flights

Pack as though the roller may be gate checked. Place lithium battery devices, medication, passports, money, electronics, and one day's essentials in the personal item. Use a luggage tag and remove loose straps before surrendering the roller.

WestJet Battery and Electronic-Device Rules

WestJet introduced updated rechargeable-device handling requirements effective March 19, 2026. Smartphones, laptops, and similar rechargeable devices should travel in the cabin rather than checked baggage. If your carry-on is gate checked, remove these devices first and keep them with you.

Power banks and e-cigarettes require even closer attention. WestJet says they must be kept on your person or in the seat pocket rather than stored in the overhead bin. The airline limits travelers to one power bank and one e-cigarette per person, prohibits charging a power bank onboard, and does not allow recalled devices.

Rules for batteries depend on device type, capacity, condition, and packaging. Protect spare-battery terminals from short circuits and check WestJet's dangerous-goods guidance before packing specialized equipment. Never place a smoking, damaged, swollen, or recalled battery in any travel bag.

What Is Not Allowed in a WestJet Carry-On?

WestJet security screening in Canada follows CATSA rules, while flights departing other countries follow the applicable local authority. Firearms, many weapons, explosives, and certain dangerous goods are prohibited in the cabin. Sharp objects, tools, sporting goods, liquids, aerosols, gels, and batteries have category-specific restrictions.

For typical Canadian departures, liquids, aerosols, and gels in carry-on baggage generally need containers of 100 mL or less inside the permitted clear resealable bag, subject to security exemptions. Airline baggage allowance and security permission are separate tests: an object can fit your suitcase but still be prohibited at the checkpoint.

Medication, mobility devices, infant supplies, and medical equipment can have exceptions or special handling. Review both WestJet and the departure airport's screening authority rather than relying on a generic packing list.

WestJet vs. Air Canada Carry-On Rules

WestJet and Air Canada both commonly use a 21.5-to-22-inch class overhead bag, but their exact published measurements and fare structures must be checked separately. WestJet's current maximum is 22 × 14 × 9 inches. Never assume that a bag accepted by one Canadian carrier is guaranteed on another, especially when a Basic or UltraBasic fare is involved.

Read our Air Canada carry-on size guide for the other carrier, or return to the Airline Carry-On Rules Center to compare more airlines. On a round trip using different carriers, obey the smaller allowance and the more restrictive fare.

Frequently Asked Questions

What size carry-on does WestJet allow?

WestJet's current standard maximum is 22 × 14 × 9 inches, or 56 × 36 × 23 cm, including wheels and handles. The bag must fit the sizer and you must be able to lift it into the overhead bin without assistance.

Can I bring a carry-on with WestJet UltraBasic?

UltraBasic generally includes only one personal item. WestJet publishes exceptions for travel to or from Europe and Asia and for eligible Extended Comfort purchased across all flights in one direction. Confirm the allowance displayed in your booking.

Can I pay for a carry-on on an UltraBasic ticket?

Do not assume an ordinary carry-on can simply be added. WestJet states that a disallowed carry-on brought to the gate must be checked and may incur both a checked-bag charge and a service fee. Choose an eligible fare or published exception in advance.

What is WestJet's personal-item size?

WestJet's current Canadian carry-on page lists 16 × 13 × 6 inches, or 41 × 33 × 15 cm. The item must fit under the seat. Because airline pages and aircraft can change, verify the current page and your booking before travel.

Can a backpack be a WestJet personal item?

Yes, if the packed backpack fits within the personal-item sizer and completely under the seat. A larger travel backpack that needs the overhead bin counts as a carry-on, not a personal item.

Does WestJet weigh carry-on bags?

WestJet's general Canadian guidance emphasizes size and your ability to lift the bag rather than stating one universal carry-on weight maximum. Partner carriers and special items can have separate restrictions.

Does WestJet count wheels and handles?

Yes. Measure the complete external bag. Wheels, handles, feet, and packed pockets count toward the published dimensions.

What happens if my WestJet carry-on is too big?

It can be refused as a cabin bag and checked, with applicable charges. UltraBasic passengers can also face an additional gate service fee. Measure at home and keep expansion zippers closed.

Are the old 21 × 15 × 9 WestJet dimensions still valid?

No. WestJet changed its carry-on maximum effective May 6, 2025. The current published maximum is 22 × 14 × 9 inches. An older 15-inch-wide bag can exceed today's 14-inch width.

Can I bring a purse and a carry-on on WestJet?

If your fare includes a carry-on plus a personal item, a qualifying purse can serve as the personal item. On UltraBasic, the purse or another under-seat bag is generally the single included item unless an exception applies.

Can WestJet gate-check a bag that meets the limit?

Yes. Limited overhead space or aircraft configuration can require gate checking even when a bag meets the published size. Keep cabin-required batteries, medication, documents, valuables, and fragile electronics in your personal item.

Which airline's rules apply on a WestJet codeshare?

Check the operating carrier listed for each flight. Partner-operated segments can apply different size, weight, and fare rules, so plan around the strictest segment.

Final Verdict

For most WestJet fares, the safest overhead-bag target is a non-expanded suitcase with verified exterior dimensions below 22 × 14 × 9 inches, paired with a personal item below 16 × 13 × 6 inches. For UltraBasic, plan around one under-seat item unless your itinerary clearly qualifies for WestJet's Europe/Asia or Extended Comfort exception.

The most important gap travelers miss is the 2025 dimension change: WestJet gained one inch of height but lost one inch of width. Measure all three sides, include wheels and handles, and do not trust an old “WestJet approved” label. Recheck your booking before departure, particularly on partner flights and UltraBasic fares.