Part Two: Flying with Food Allergies: Requesting Special Meals

For many travelers with food allergies, requesting a special meal when booking a flight is necessary. But airline meal systems are often misunderstood—and knowing how they actually work is critical for managing expectations and reducing risk while traveling.

While special meals can sometimes help travelers avoid certain ingredients, they are not designed to guarantee allergen-free food.

How Airline Special Meal Systems Actually Work

Most airlines use standardized meal codes instead of individualized allergen requests.

Common meal codes include:

• GFML – Gluten-free

• VGML – Vegan

• DBML – Diabetic

• KSML – Kosher

• AVML – Asian vegetarian

These meals are designed around broad dietary categories—not specific allergies.

For example, a vegan meal may avoid dairy and eggs, which could help some travelers, but it is not prepared as a medically allergen-free meal. Similarly, a gluten-free meal is not necessarily safe for someone with celiac due to cross-contact risks during preparation. Most airlines can not guarantee allergen-free meals.

Another challenge is that most airlines only allow passengers to select one special meal, forcing travelers with multiple dietary needs to prioritize one requirement over another. For example, someone who is both vegan and has a severe gluten allergy may have to choose between a vegan meal that contains gluten or a gluten-free meal that includes animal products, leaving them without a meal that fully meets their needs.

How to Properly Request a Special Meal

The best time to request a special meal is during booking.

When travelers select a meal preference, the airline attaches a Special Service Request (SSR) code to the reservation. This code is what alerts catering teams to load a specific meal type onto the aircraft.

If you did not request a meal during booking, most airlines allow changes later through:

• “Manage Booking”

• Customer service phone support

• Mobile apps

However, timing matters.

Most airlines have strict deadlines for meal requests:

• Commonly 20–24 hours before departure

• Sometimes 48 hours or more for severe allergy requests

Once the cutoff passes, airlines are often unable to modify catering orders.

Example of meal options provided by Canada Air.

Travelers with Severe Allergies May Need Additional Steps

For travelers with severe allergies, selecting a meal code alone is often not enough.

Additional steps may include:

• Calling the airline directly

• Adding allergy notes to the reservation

• Submitting medical documentation if requested (for some airlines)

• Confirming requests with flights on partner airlines

This is especially important because allergy information does not always transfer smoothly between airlines.

Some travelers are surprised to learn that certain airlines may even decline accommodation requests or raise concerns if severe allergies are disclosed too late before departure.

Always Reconfirm at the Airport and Onboard

Even when meal requests are entered correctly, mistakes can still happen.

Meals are manually loaded and distributed, meaning:

• Incorrect meals may occasionally be boarded

• Special meals can be reassigned accidentally

• Requests may disappear during schedule or aircraft changes

For this reason, many travelers reconfirm multiple times:

• Before arriving at the airport

• At the gate

• Once onboard with the cabin crew

These extra checks can help identify problems before meal service begins.

In Conclusion

Special meals can sometimes reduce exposure to certain ingredients, but they should not be viewed as fully allergen-safe solutions.

Airline catering systems are designed for operational efficiency—not medical-level allergen control.

The safest approach is usually a layered one:

• Request accommodations early

• Reconfirm throughout travel

• Understand the limitations of special meal systems

• Bring food you fully trust

In the final part of this series, we’ll explore what airlines are—and are not—legally required to do for passengers with food allergies, and how protections vary across different regions of the world.