In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What is the cheapest time of day to fly from YHM to ORD?

When flying from Hamilton, Ontario to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Hamilton to Chicago O'Hare Intl?

Hamilton (YHM), located 10.9 km from the city centre, is the airport you fly out of when you book flights from Hamilton to Chicago O'Hare Intl. 0 airlines have flights from Hamilton to Chicago O'Hare Intl on a regular basis. Booking flights from Hamilton to Chicago O'Hare Intl should not be difficult; the airport handles an average of 0 outbound flights to Chicago O'Hare Intl per day.

Can I find deals for flights from Hamilton to O'Hare Intl that include hotel bookings?

Yes. In addition to deals on Hamilton to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Hamilton to O'Hare Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hamilton to O'Hare Intl.

Can I find deals for business class flights from Hamilton to O'Hare Intl?

Yes. Cheapflights offers flight deals from Hamilton to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 269+ Cheap Flights from Hamilton, ON to Chicago O'Hare Intl Airport

Cheap flight deals from Hamilton to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Hamilton to O'Hare Intl
Explore the most affordable flight options available from Hamilton to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2026.

Sun 22/116:20 a.m. -

1 stop18h 14m

Fri 27/114:00 p.m. -

1 stop21h 19m

Deal found 24/10C$ 535

Sun 22/116:20 a.m. -

1 stop18h 14m

Sat 28/116:20 a.m. -

1 stop15h 15m

Deal found 24/10C$ 586

Sat 21/116:20 a.m. -

1 stop18h 14m

Fri 27/114:00 p.m. -

1 stop21h 19m

Deal found 24/10C$ 593

Tue 1/1212:10 p.m. -

3 stops26h 42m

Sat 5/128:30 a.m. -

2 stops13h 05m

Deal found 26/10C$ 603

Sat 21/113:20 p.m. -

1 stop10h 23m

Sat 28/116:20 a.m. -

1 stop15h 15m

Deal found 24/10C$ 652

Sat 7/116:20 a.m. -

1 stop10h 17m

Tue 10/117:35 p.m. -

3 stops25h 35m

Deal found 22/10C$ 656

Sat 7/116:20 a.m. -

1 stop10h 17m

Mon 9/117:55 a.m. -

2 stops13h 15m

Deal found 26/10C$ 688

Sun 6/126:20 a.m. -

2 stops16h 22m

Sun 13/126:07 a.m. -

1 stop9h 58m

Deal found 22/10C$ 691

Find flight deals from Hamilton to O'Hare Intl

Round-trip from	C$ 535
One-way from	C$ 269
Popular in	October
Cheapest in	February
Average price	C$ 443

22/11-27/11
2 total stops
39h 33m total
Hamilton to Chicago

Search Deals

22/11-31/12
1 total stop
18h 14m total
Hamilton to Chicago

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (C$ 23 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Hamilton to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Tue 8/12

12:10 p.m.-10:00 p.m.

3 stops34h 50m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 293

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sun 6/12

12:10 p.m.-9:42 p.m.

3 stops34h 32m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 329

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Fri 4/12

6:55 a.m.-6:03 p.m.

2 stops12h 08m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 367

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sun 13/12

6:20 a.m.-9:42 p.m.

2 stops16h 22m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 398

Quickest round-trip

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sun 8/11

6:20 a.m.-3:37 p.m.

1 stop10h 17m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 464

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Fri 11/12

6:55 a.m.-9:42 p.m.

2 stops15h 47m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 479

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sun 22/11

6:20 a.m.-11:34 p.m.

1 stop18h 14m

Chicago O'Hare Intl

Fri 27/11

4:00 p.m.-2:19 p.m.

1 stop21h 19m

C$ 535

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Tue 1/12

7:05 a.m.-4:59 a.m.

3 stops22h 54m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 545

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Mon 9/11

8:00 a.m.-10:55 p.m.

2 stops15h 55m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 677

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sun 6/12

6:20 a.m.-9:42 p.m.

2 stops16h 22m

Chicago O'Hare Intl

Sun 13/12

6:07 a.m.-5:05 p.m.

1 stop9h 58m

C$ 691

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/10

Showing 1-10 of 16 resultsSorted by cheapest first

Best time to book a flight from Hamilton to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Hamilton with our price prediction graph.

YHM-ORD

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

What airport do you fly from for flights from Hamilton to Chicago O'Hare Intl?
Hamilton (YHM), located 10.9 km from the city centre, is the airport you fly out of when you book flights from Hamilton to Chicago O'Hare Intl. 0 airlines have flights from Hamilton to Chicago O'Hare Intl on a regular basis. Booking flights from Hamilton to Chicago O'Hare Intl should not be difficult; the airport handles an average of 0 outbound flights to Chicago O'Hare Intl per day.
Can I find deals for flights from Hamilton to O'Hare Intl that include hotel bookings?
Yes. In addition to deals on Hamilton to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Hamilton to O'Hare Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hamilton to O'Hare Intl.
Can I find deals for business class flights from Hamilton to O'Hare Intl?
Yes. Cheapflights offers flight deals from Hamilton to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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How does Cheapflights help users find flights from Hamilton to O'Hare Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Hamilton to O'Hare Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Hamilton to O'Hare Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to O'Hare Intl from Hamilton.

Can Cheapflights find flights from Hamilton to O'Hare Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Hamilton to O'Hare Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Hamilton to O'Hare Intl become cheaper?

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Cheap flights from Hamilton, ON to Chicago O'Hare Intl Airport from C$ 269

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Hamilton to O'Hare Intl

Cheapest flights from Hamilton to O'Hare IntlExplore the most affordable flight options available from Hamilton to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2026.

Explore the most affordable flight options available from Hamilton to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2026.

Best flights from Hamilton to O'Hare IntlDiscover carefully curated flight deals from Hamilton to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 27 October 2026.

Discover carefully curated flight deals from Hamilton to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 27 October 2026.

Last-minute flights from Hamilton to O'Hare IntlDiscover last-minute flight deals from Hamilton to O'Hare Intl. Data last updated 27 October 2026 and is based on user searches.

Discover last-minute flight deals from Hamilton to O'Hare Intl. Data last updated 27 October 2026 and is based on user searches.

One-way flights from Hamilton to O'Hare IntlSearch for one-way flight options from Hamilton to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 27 October 2026.

Search for one-way flight options from Hamilton to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 27 October 2026.

Find flight deals from Hamilton to O'Hare Intl

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Hamilton to Chicago O'Hare Intl Airport that are best for you.

Best time to book a flight from Hamilton to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Hamilton with our price prediction graph.

Related info for your journey

What airport do you fly from for flights from Hamilton to Chicago O'Hare Intl?

Can I find deals for flights from Hamilton to O'Hare Intl that include hotel bookings?

How can I find direct flights from Hamilton to O'Hare Intl?

Can I find deals for business class flights from Hamilton to O'Hare Intl?

Travelling to a place near Chicago O'Hare Intl Airport?

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Alternative routes for Hamilton to O'Hare Intl

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Complete your trip

Complete your trip to O'Hare Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to Illinois

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Search flights from Hamilton to O'Hare Intl by cabin class

Find flights from Hamilton to O'Hare Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to O'Hare Intl

Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 27 October 2026.

Hamilton and O'Hare Intl flights

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Why should you use Cheapflights to find cheap flight tickets from Hamilton to O'Hare Intl?

Can Cheapflights find flights from Hamilton to O'Hare Intl with no change fees?

Can Cheapflights notify me if prices for flights from Hamilton to O'Hare Intl become cheaper?

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Cheapest flights from Hamilton to O'Hare Intl
Explore the most affordable flight options available from Hamilton to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2026.

Best flights from Hamilton to O'Hare Intl
Discover carefully curated flight deals from Hamilton to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 27 October 2026.

Last-minute flights from Hamilton to O'Hare Intl
Discover last-minute flight deals from Hamilton to O'Hare Intl. Data last updated 27 October 2026 and is based on user searches.

One-way flights from Hamilton to O'Hare Intl
Search for one-way flight options from Hamilton to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 27 October 2026.