Canada's Secret Transit Programs:
TWoV, One Stop Security & Why YVR Is an Underrated Connection Hub

Most travelers only know Canada for maple syrup and National Parks. But if you're connecting through Canadian airports, you're missing some of the smartest transit programs available anywhere. Canada has quietly built several programs that make international connections dramatically easier—and most travelers have never heard of them.

Bet you didn't know this: You can transit through Canada with a same-day connection to the US without a Canadian visa, even if you normally need one. You can skip security rescreening between Canada and Europe. You can move between international flights without touching customs. And Vancouver, Toronto, and Montreal are genuinely underrated connection hubs precisely because of these programs.

Transit Without Visa (TWoV): The Game-Changer

Transit Without Visa is a Canadian program that allows certain visa-required nationals to pass through Canada en route to another country—without obtaining a Canadian visa. The catch: you must have a valid ticket to your final destination, that ticket must be for the same day, and you cannot leave the airport.

Here's why this matters: If you're a national of China, India, Pakistan, Philippines, Vietnam, or several other countries that require a Canadian visitor visa, you normally can't step through Canada without one. That rules out Canadian hubs for connections entirely.

TWoV changes that. You can now book Toronto to New York, London to Vancouver to Hong Kong, or Beijing to Montreal to Miami—all without getting a Canadian visa.

Why airlines love this

For airlines, TWoV opens up connecting routes that weren't viable before. An Air China passenger from Beijing can now connect to a US flight in Toronto without a visa, making Toronto a genuine hub for Asian-to-North America traffic. Air Canada, in particular, has built out its Toronto (YYZ) and Montreal (YUL) hubs specifically because TWoV makes these routes work.

The rules that matter

• Same-day onward flight only. You cannot stay overnight. Your connection flight must depart the same calendar day as your arrival. If you arrive at 11 pm and your next flight is tomorrow, you don't qualify.
• Direct connection. You cannot have a layover in a third country. You're coming from abroad, passing through Canada, and continuing abroad. That's it.
• Don't leave the airport. You must remain in the international transit area. No clearing Canadian customs, no stepping outside security. Stay in the airport, and you're fine.
• Valid passport required. Your passport must be valid for the entirety of your journey to the next country. No exceptions.

One Stop Security (OSS): No Rescreening Between Canada and the EU

This one's a genuine time-saver. Canada and the EU have a bilateral agreement that eliminates the need to rescreen passengers connecting between the two regions.

Normally, if you're connecting internationally, you go through security at your origin airport, then when you arrive at your next airport, you go through security again. Those two security processes are separate because each country operates under different security standards. The TSA has different rules than French customs has different rules than Australian border control. So you rescan your bags and get re-vetted at each hub.

OSS says: Not between Canada and the EU. If you clear security at a Canadian airport to connect to the EU, you don't rescan in Europe. And vice versa. One screening covers the connection.

Time savings in action

Example: You're flying London to Toronto to New York. Without OSS and US recognition: You clear UK security, land in Toronto, go through Canadian security screening, then later clear US security for your flight to New York. That's three separate security processes.

With OSS and US recognition: You clear UK security once. You land in Toronto, skip Canadian screening (because of OSS), and when you get to your onward flight to New York, the US recognizes your Canadian security as valid. Net result: You've cut security processing time in half.

International-to-International (ITI) Connections: Border Clearance Kiosks

Here's a feature most travelers don't know exists: Canadian airports have border clearance kiosks in the international transit area. You can process your connection between two international flights without ever going through customs or immigration.

Think of it as a holding pattern for your immigration status. You arrive on Flight A from Europe, and instead of going through customs, you scan your passport at a kiosk, get cleared for transit, and proceed directly to your connection gate for Flight B to Asia. You never touch Canadian customs. You never formally "enter" Canada.

This is specifically useful for: travelers connecting between regions without a Canadian destination, passengers avoiding customs lines, and those with tight connections who need to bypass processing delays.

Which airports have this?

Toronto Pearson (YYZ), Vancouver (YVR), Montreal (YUL), and Calgary (YYC) all have these kiosks. Smaller Canadian airports may not.

International-to-Domestic (ITD) Connections: No Bag Reclaim in Some Cases

If you're connecting from an international flight to a domestic flight within Canada, you can bypass baggage reclaim in certain situations when paired with OSS.

Normally: Arrive on Flight A from London, collect your checked bags, clear Canadian customs (you must, since you're technically "entering" Canada), recheck bags, clear security, then board Flight B to Vancouver.

With ITD + OSS: You can proceed directly from your international arrival to your domestic gate without reclaiming checked baggage. Your airline rehandles everything behind the scenes. You clear security once (via OSS), and you're boarding your domestic flight. No baggage carousel, no customs line (you clear it conceptually without stopping), no rechecking.

Why YVR, YYZ, and YUL Are Underrated Hubs

Vancouver (YVR): The Pacific Bridge

YVR has become a gateway for Asia-Pacific connections specifically because of these transit programs. Flights from China, Japan, and Southeast Asia can connect through Vancouver to North American destinations without passengers needing visas or undergoing excessive security delays.

Airlines like Air Canada, Thai Airways, and Korean Air use YVR heavily for their cross-Pacific operations. For travelers: expect short connections, efficient terminal design, and routes that weren't possible 5 years ago.

Toronto Pearson (YYZ): The Atlantic Crossroads

Toronto has leveraged these programs to become one of North America's busiest hubs. It's a natural stopping point between Europe and Asia, with particularly strong traffic because of TWoV for Indian and Chinese nationals (huge markets for Air Canada).

Minimum connection times at Toronto are shorter than comparable US hubs because the airport can reliably assume OSS and ITD compatibility. Airlines will sell 75-90 minute connections on international routes here confidently.

Montreal (YUL): Europe's North American Gateway

YUL is the closest major North American airport to Europe. Combined with OSS, it's become an efficient connection point for European-to-US or European-to-Asia traffic. Air Canada uses it as a secondary transatlantic hub, and the airport's compact design means shorter walks between gates.

Practical Connection Times and Minimum Connection Limits

These times assume standard operations. Peak times (5-6 pm departures) can extend these by 10-15 minutes. Early morning connections (before 7 am) often run faster.

When These Programs DON'T Apply

Red-eye flights and early mornings

Some facilities, particularly border clearance kiosks, operate on reduced hours after midnight. If you're arriving on a red-eye and connecting early morning, verify that staff will be present. Most major hubs (Toronto, Vancouver) staff 24/7, but don't assume.

Flights requiring an ETA or visa

If your onward flight requires a visa or authorization (US ESTA, UK visa, EU Schengen visa), these programs don't override those requirements. You still need the appropriate authorization for your destination country.

Baggage already cleared to final destination

If your airline checked your baggage all the way to your final destination, ITD doesn't apply. You're already past reclaim. This is actually the most common scenario for efficiently ticketed passengers.

Domestic connections with a third-country stopover

If you're booking Canada-US-Canada or similar (you leave North America and return), you must clear customs. The programs assume a clean through-transit with no third stops.

Carriers not participating in OSS

Most major carriers participate in OSS (Air Canada, Lufthansa, Air France, KLM, etc.), but not all. Some smaller carriers or ultra-low-cost carriers may not have bilateral agreements. Confirm with your specific carrier if rescreening applies.

Comparing to US Connections

For context: In the US, everyone clears customs and immigration on first entry, regardless of onward flight. There is no "through-transit" option like Canada's ITI. If you're connecting internationally in the US, you're going through CBP processing—that's 45-90 minutes built into every itinerary.

Canada's approach is different. You can remain in transit without formally entering. This is why Canadian connections often feel more efficient than comparable US connections—less bureaucracy if you stay airside.

The Bottom Line

Canada's transit programs are genuinely underutilized because they're not heavily marketed. But if you're routing through Vancouver, Toronto, or Montreal, you have access to several features that make connections faster and easier than comparable US hubs:

• TWoV removes visa barriers for certain nationals connecting through Canada
• OSS eliminates rescreening between Canada and Europe
• ITI kiosks let you stay in transit without customs
• ITD efficiency means domestic connections from international arrivals are genuinely fast
• Hub efficiency: YVR, YYZ, and YUL have built their entire hubs around these programs, meaning tighter connections and better operations

Check our connection time calculator to see what's realistic for your specific route and Canadian airport pair. For more guidance on tight connections and what to do if things go wrong, grab our Recovery Guide.