$216 Find Cheap Flights from Ottawa to Chicago - Compare and Save

Among airlines operating Ottawa to Chicago flights:

• Air Canada: offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only United Airlines operates flights between Ottawa and Chicago.

Flights from Ottawa to Chicago usually depart from Ottawa (YOW) and may arrive at several airports in Chicago area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD).

Here are some options for this route, based on selected ticket types and cabin classes:

• Air Canada: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in Economy Class
• ANA: a cabin bag and a checked bag in First Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from Ottawa to Chicago:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $352 round-trip via Fort Lauderdale (FLL), compared to $648 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $25–$69 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

One-stop flights from Ottawa to Chicago most commonly connect through:

• Toronto Island (YTZ) - 84% of one-stop connections
• Toronto Pearson Intl (YYZ) - 14% of one-stop connections
• Fort Lauderdale (FLL) - 1% of one-stop connections
• Calgary (YYC) - 1% of one-stop connections

Toronto Island (YTZ) handles the largest share of one-stop connections on this route.

On the Ottawa to Chicago route, being flexible with your departure day can save you up to 23%. Sunday is the cheapest day at $501 round-trip on average, while Monday is the most expensive at $644: a $143 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Morning is the busiest departure period on Ottawa to Chicago flights, with 67% of flights leaving in that window. Evening departures account for 33%, afternoon flights for 0%, and night flights for 0%.

Some of the most popular sights in Chicago are Magnificent Mile, Grant Park and River North. These are among the most viewed places in Chicago on KAYAK.

These are the earliest and latest flight times available from Ottawa to Chicago:

• Earliest: departs at 6:15 am and lands at 8:45 am
• Latest: departs at 5:20 pm and lands at 7:50 pm.

The flight takes about 2h 30m.

A nonstop flight from Ottawa to Chicago takes 2h 30m, covering 643 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $298 to $1,252. That means the highest observed fare was about 4x higher than the lowest one.

One-way fares from Ottawa to Chicago are currently lower than usual. Average one-way flight prices are about $316, which is 6% below the typical average for this route.

Flying via Toronto Island (YTZ) gives the shortest average 1-stop total travel time at 4h 57m, compared with 6h 07m via Toronto Pearson Intl (YYZ) and 10h 42m via Calgary (YYC).

Chicago is 1 hour behind Ottawa (Central Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Since Chicago is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near Chicago O'Hare Intl Airport (ORD) — daily rates from around $17:

· Routes Car & Truck Rentals
· Europcar
· Hertz
· Dollar
· Ace

Near Chicago Midway Airport (MDW) — daily rates from around $32:

· Hertz
· Dollar
· Budget
· Alamo
· Rent-A-Wreck

Near Chicago Greater Rockford Airport (RFD) — daily rates from around $30:

· Alamo
· Enterprise Rent-A-Car
· Budget
· Avis
· National

Round-trip flights from Ottawa to Chicago range from $404 to $707, with an average of $557 over the past 12 months. Anything below $404 counts as a good deal.