In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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.

Most accurate provider : When it comes to deals on Hamilton, Ontario-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Hamilton, Ontario-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Hamilton, Ontario-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Hamilton, Ontario-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Hamilton, Ontario-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

For a flight from Hamilton to Chicago O'Hare Intl, you will be flying from Hamilton. Hamilton (YHM) is just 6.8 mi from the center of the city. Hamilton is the only Hamilton airport and it handles 0 outbound flights to Chicago O'Hare Intl per day. 0 airlines have flights to Chicago O'Hare Intl from Hamilton on a regular basis.

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.

$224+ Cheap Flights from Hamilton, ON to Chicago O'Hare Intl Airport

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1. Tell us where you want to go

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Cheap flight deals from Hamilton to O'Hare Intl

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 August 19, 2026.

Thu 9/106:05 am -

3 stops35h 35m

Sun 9/135:30 pm -

3 stops23h 05m

Deal found 8/15

$434

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 August 19, 2026.

Thu 9/106:05 am -

3 stops35h 35m

Sun 9/135:30 pm -

3 stops23h 05m

Deal found 8/15

$447

Fri 9/46:05 am -

3 stops35h 35m

Sun 9/65:30 pm -

2 stops27h 39m

Deal found 8/14

$624

Fri 9/46:05 am -

3 stops35h 35m

Sun 9/135:30 pm -

3 stops27h 55m

Deal found 8/15

$635

Tue 10/136:10 pm -

3 stops25h 58m

Fri 10/165:30 pm -

2 stops20h 35m

Deal found 8/18

$660

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 August 19, 2026.

Sun 9/136:10 pm -

2 stops31h 13m

Deal found 8/15

$224

Thu 10/16:05 am -

3 stops35h 35m

Deal found 8/17

$233

Wed 9/96:10 pm -

1 stop23h 30m

Deal found 8/15

$274

Sat 9/56:05 am -

3 stops35h 35m

Deal found 8/16

$278

Wed 10/146:10 pm -

1 stop23h 30m

Deal found 8/17

$286

Mon 10/56:05 am -

3 stops35h 35m

Deal found 8/14

$301

Wed 9/96:05 am -

3 stops35h 35m

Deal found 8/18

$304

Sat 10/176:05 am -

1 stop15h 07m

Deal found 8/18

$305

Find flight deals from Hamilton to O'Hare Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$434 (Mytrip)
One-way from	$224 (Kiwi.com)
Popular in	July
Cheapest in	February
Average price	$268

Provider with most accurate pricing for Hamilton-Chicago O'Hare Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Hamilton-Chicago O'Hare Intl flights.

Search Deals

From Hamilton to Chicago O'Hare Intl

Search Deals

One-way flight from Hamilton to Chicago O'Hare Intl

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($9 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 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

Thu 9/10

6:05 am-4:40 pm

3 stops35h 35m

Chicago O'Hare Intl

Sun 9/13

5:30 pm-5:35 pm

3 stops23h 05m

$447

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Fri 9/4

6:05 am-4:40 pm

3 stops35h 35m

Chicago O'Hare Intl

Sun 9/6

5:30 pm-10:09 pm

2 stops27h 39m

$624

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Fri 9/4

6:05 am-4:40 pm

3 stops35h 35m

Chicago O'Hare Intl

Sun 9/13

5:30 pm-10:25 pm

3 stops27h 55m

$635

Quickest round-trip

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Tue 10/13

6:10 pm-7:08 pm

3 stops25h 58m

Chicago O'Hare Intl

Fri 10/16

5:30 pm-3:05 pm

2 stops20h 35m

$660

Cheapest one-way

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sat 9/5

7:00 am-4:40 pm

2 stops34h 40m

$282

Quickest one-way

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sat 11/7

6:05 am-2:52 pm

1 stop9h 47m

$286

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Mon 10/5

6:05 am-4:40 pm

3 stops35h 35m

$301

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sun 10/4

6:05 am-4:40 pm

3 stops35h 35m

$313

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sat 9/5

6:10 pm-4:40 pm

1 stop23h 30m

$343

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sun 10/4

6:10 pm-4:40 pm

1 stop23h 30m

$368

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 15 resultsSorted by cheapest first

Compare providers for flights from Hamilton to O'Hare Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Hamilton to O'Hare Intl in August.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Hamilton, Ontario-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Hamilton, Ontario-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Hamilton, Ontario-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Hamilton, Ontario-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Hamilton, Ontario-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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?
For a flight from Hamilton to Chicago O'Hare Intl, you will be flying from Hamilton. Hamilton (YHM) is just 6.8 mi from the center of the city. Hamilton is the only Hamilton airport and it handles 0 outbound flights to Chicago O'Hare Intl per day. 0 airlines have flights to Chicago O'Hare Intl from Hamilton on a regular basis.
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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$224+ Cheap flights from Hamilton, ON (YHM) to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Hamilton to O'Hare Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 August 19, 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 August 19, 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 August 19, 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 August 19, 2026.

Last-minute flights from Hamilton to O'Hare IntlDiscover last-minute flight deals from Hamilton to O'Hare Intl. Data last updated August 19, 2026 and is based on user searches.

Discover last-minute flight deals from Hamilton to O'Hare Intl. Data last updated August 19, 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 August 19, 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 August 19, 2026.

Find flight deals from Hamilton to O'Hare Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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.

Compare providers for flights from Hamilton to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Hamilton to O'Hare Intl in August.

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?

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

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Alternative routes for Hamilton to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

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

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 August 19, 2026.

Hamilton and O'Hare Intl flights

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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 August 19, 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 August 19, 2026.

Last-minute flights from Hamilton to O'Hare Intl
Discover last-minute flight deals from Hamilton to O'Hare Intl. Data last updated August 19, 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 August 19, 2026.