Route brief · CHI → YUL
Chicago → Montreal
$324
round-trip · too little price history on this route to compare
Oct 16 – Oct 18 · 2 nights
Porter Airlines1 stop
Cached fare — the booking search re-prices live before you pay.
Destination briefYULMontrealFrench North America — cheap transatlantic fares in, and a summer festival calendar that never stops.Best windowJun–SepAirportsTrudeau (YUL)All routes into MontrealWhen this route gets cheap.
Best time to be in Montreal: Jun–Sep. Fare history for this route is still thin, so we make no seasonal call yet.
The cheapest itinerary we are tracking makes one stop and takes about 3 hours outbound, on a 2-night trip — ticketed under Porter Airlines, which on a connecting fare need not operate every leg. At $324 for 1,183 km each way, that works out to about $137 per 1,000 km flown. That is above the $41 typical of short-haul fares here. We have 1 month of cached prices for this route so far — not enough to call a fare cheap or expensive, so we publish the price without a percentage.
The one day we hold a cached fare for
Tap a date → live search
These are the only days we have a cached price for on this route so far — not the only days it flies. The search above covers any date.
Route facts
- Airports
- O’Hare (ORD) · Midway (MDW) ↔ Trudeau (YUL)
- Flight time
- ~3 hours outbound
- Distance
- ~1,183 km each way
- Airlines on the board
- Porter Airlines
- Itineraries
- Connections on current fares
- Best months to visit
- Jun–Sep
CHI → YUL, answered.
How far in advance should I book CHI → Montreal?
We do not publish a number for this, because we cannot measure it yet. Answering it honestly means watching the same departure date on this route over many weeks as it approaches, and that archive is still filling up — so any "book N days ahead" figure here would be borrowed from somewhere else rather than measured. See /guides/what-moves-a-flight-price/ for the levers we can measure.
Are there nonstop flights from Chicago to Montreal?
The current cheapest fares involve a connection, ticketed under Porter Airlines. Nonstop options exist on many dates at higher prices — check the live search for your exact dates.
Are these prices guaranteed?
No — these are cached fares found on real searches (this one on September 1). Airlines reprice constantly, so the booking search re-checks the live price before you pay. Fresher finds are far more likely to still be available.
Next step
Sleeping in Montreal?
Lock the flight first — then compare stays for Oct 16 – Oct 18 · 2 nights.
Browse hotels ↗
Missed it?
Cached fares expire. This route has a feed of its own — follow it and the next CHI → YUL drop reaches you as soon as we find it.
Follow CHI → YUL