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$512+ Cheap flights from Saint John (YSJ) to Illinois

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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — ORD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from St John to Illinois

Best flights from St John to Illinois
Discover carefully curated flight deals from St John to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This Air Canada deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:55 amYSJ - ORD
2 stops7h 50mAir Canada
Wed 4/154:15 pmORD - YSJ
1 stop5h 37mAir Canada
Deal found 12/15$512
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:55 amYSJ - ORD
2 stops11h 10mUnited Airlines
Wed 4/1510:50 amORD - YSJ
2 stops11h 02mUnited Airlines
Deal found 12/16$572
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/134:15 pmYSJ - ORD
1 stop5h 55mAir Canada
Tue 1/207:15 amORD - YSJ
1 stop6h 25mAir Canada
Deal found 12/16$527
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/134:15 pmYSJ - ORD
1 stop5h 55mUnited Airlines
Tue 1/208:58 pmORD - YSJ
2 stops16h 42mUnited Airlines
Deal found 12/16$576

Find flight deals from St John to Illinois

Keep the following information in mind while searching for St John to Illinois flight deals. Data was last updated December 18, 2025.

Round-trip from

$506
(Air Canada)
From Saint John to Illinois
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St John to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Saint John to Illinois that are best for you.

Fly from

St John

Fly to

Illinois

Route

Depart

Return

Price

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Tue 4/14

11:55 am-5:45 pm

2 stops7h 50m

Chicago O'Hare Intl

Wed 4/15

4:15 pm-11:52 pm

1 stop5h 37m

$512

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Tue 1/13

4:15 pm-8:10 pm

1 stop5h 55m

Chicago O'Hare Intl

Tue 1/20

7:15 am-3:40 pm

1 stop6h 25m

$527

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Tue 4/14

11:55 am-9:05 pm

2 stops11h 10m

Chicago O'Hare Intl

Wed 4/15

10:50 am-11:52 pm

2 stops11h 02m

$572

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Tue 1/13

4:15 pm-8:10 pm

1 stop5h 55m

Chicago O'Hare Intl

Tue 1/20

8:58 pm-3:40 pm

2 stops16h 42m

$576

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Best time to book a flight from St John to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from St John with our price prediction graph.
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.

Cheapflights Insights

Everything you need to know about your flight from Saint John to Illinois
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from St John to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Saint John to Illinois?

    Saint John (YSJ) is the airport you will fly out of if you book a flight from Saint John to Illinois. It is only a 9.4 mi journey to Saint John (YSJ) from Saint John’s city center.

  • How long is the flight from Saint John to Illinois?

    Departing from Saint John to Illinois will take you 7h 50m. Airlines will cover a distance of 1120 mi.

  • Can I find deals for flights from St John to Illinois that include hotel bookings?

    Yes. In addition to deals on St John to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St John to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St John to Illinois.

  • Can I find deals for business class flights from St John to Illinois?

    Yes. Cheapflights offers flight deals from St John to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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