$223 Find Cheap Flights from Ottawa to Chicago - Compare and Save

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

• Earliest: departs at 6:15 am and lands at 8:59 am
• Latest: departs at 5:20 pm and lands at 8:04 pm.

The flight takes about 2h 44m.

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

• Economy Class
• Business Class
• First Class

A nonstop flight from Ottawa to Chicago takes 2h 44m, 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.

Round-trip flights from Ottawa to Chicago range from $426 to $771, with an average of $628 over the past 12 months. Anything below $426 counts as a good deal.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $352 round-trip via Fort Lauderdale (FLL), compared to $715 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.

Morning is the busiest departure period on Ottawa to Chicago flights, with 50% of flights leaving in that window. Afternoon departures account for 50%, evening flights for 0%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $330 to $1,434. 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 $349, which is 5% below the typical average for this route.

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
• Ace
• Dollar

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 $28:

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

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).

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

• Toronto Island (YTZ) - 82% of one-stop connections
• Toronto Pearson Intl (YYZ) - 17% of one-stop connections
• Fort Lauderdale (FLL) - 1% of one-stop connections
• Calgary (YYC) - 1% of one-stop connections

Yes. Flexible dates can save you up to 27% on flights from Ottawa to Chicago. Thursday is the cheapest departure day at $547 round-trip on average, while Monday is the most expensive at $748, a difference of $201.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only United Airlines operates flights between Ottawa and Chicago.

Flying via Toronto Island (YTZ) gives the shortest average 1-stop total travel time at 4h 55m, compared with 6h 10m 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.

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

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.

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 always check the fare details before booking.