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Cheap flights from Saint John to Illinois from C$ 392

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
YSJ — ORD
25 Apr — 2 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St John to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from St John to Illinois
Explore the most affordable flight options available from St John to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2026.

Sat 24/104:30 p.m.
YSJ
-
ORD
1 stop5h 42m
Air Canada
Tue 27/107:15 a.m.
ORD
-
YSJ
1 stop6h 25m
Air Canada
Deal found 25/3C$ 703
Tue 5/54:30 p.m.
YSJ
-
ORD
1 stop5h 38m
Air Canada
Tue 12/58:45 a.m.
ORD
-
YSJ
1 stop4h 55m
Air Canada
Deal found 21/3C$ 709
Thu 12/115:25 a.m.
YSJ
-
ORD
1 stop7h 33m
Air Canada
Sat 14/117:15 a.m.
ORD
-
YSJ
1 stop6h 25m
Air Canada
Deal found 23/3C$ 713
Wed 10/612:20 p.m.
YSJ
-
ORD
1 stop6h 39m
Air Canada
Mon 15/62:15 p.m.
ORD
-
YSJ
1 stop7h 37m
Air Canada
Deal found 24/3C$ 721
Fri 8/54:30 p.m.
YSJ
-
ORD
1 stop5h 38m
Air Canada
Fri 15/58:20 p.m.
ORD
-
YSJ
1 stop13h 35m
Air Canada
Deal found 24/3C$ 749
Wed 10/65:35 a.m.
YSJ
-
ORD
1 stop5h 30m
Air Canada
Thu 11/68:20 p.m.
ORD
-
YSJ
1 stop13h 07m
Air Canada
Deal found 24/3C$ 756
Fri 8/54:30 p.m.
YSJ
-
ORD
1 stop5h 38m
United Airlines
Fri 15/59:35 p.m.
ORD
-
YSJ
2 stops16h 05m
United Airlines
Deal found 24/3C$ 781
Wed 10/612:00 p.m.
YSJ
-
MDW
3 stops23h 14m
Multiple Airlines
Thu 11/61:49 p.m.
MDW
-
YSJ
2 stops18h 11m
Multiple Airlines
Deal found 24/3C$ 1,329
Wed 10/610:45 a.m.
YSJ
-
MDW
2 stops9h 46m
Multiple Airlines
Mon 15/61:16 p.m.
MDW
-
YSJ
3 stops24h 29m
Multiple Airlines
Deal found 24/3C$ 1,353

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 26 March 2026.

Round-trip from

C$ 709

One-way from

C$ 392
Air Canada
  • Air Canada
  • 5/5-12/5
  • 2 total stops
  • 10h 33m total
  • Saint John to Illinois
Search Deals
Air Canada
  • Air Canada
  • 8/5
  • 1 total stop
  • 5h 38m total
  • 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 629,999 searches. Data last updated 26 March 2026.
Use the filters below to find and compare flights from Saint John to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Tue 5/5

4:30 p.m.-8:08 p.m.

1 stop5h 38m

Chicago O'Hare Intl

Tue 12/5

8:45 a.m.-3:40 p.m.

1 stop4h 55m

C$ 709

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Fri 8/5

4:30 p.m.-8:08 p.m.

1 stop5h 38m

Chicago O'Hare Intl

Fri 15/5

9:35 p.m.-3:40 p.m.

2 stops16h 05m

C$ 781

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Tue 5/5

4:30 p.m.-7:46 a.m.

2 stops17h 16m

Chicago O'Hare Intl

Tue 12/5

8:45 a.m.-3:40 p.m.

1 stop4h 55m

C$ 789

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Wed 10/6

12:20 p.m.-11:30 p.m.

2 stops13h 10m

Chicago O'Hare Intl

Thu 11/6

2:56 p.m.-11:52 p.m.

1 stop6h 56m

C$ 801

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Wed 10/6

4:30 p.m.-11:26 p.m.

2 stops8h 56m

Chicago O'Hare Intl

Mon 15/6

11:03 a.m.-11:52 p.m.

2 stops10h 49m

C$ 826

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Tue 7/4

11:55 a.m.-11:37 p.m.

2 stops13h 42m

Chicago O'Hare Intl

Fri 10/4

7:45 p.m.-11:15 a.m.

2 stops13h 30m

C$ 1,016

Saint JohnChicago

YSJ - MDW

YSJMDW

Saint John

Wed 10/6

10:45 a.m.-6:31 p.m.

2 stops9h 46m

Chicago Midway

Mon 15/6

1:16 p.m.-3:45 p.m.

3 stops24h 29m

C$ 1,353

Saint JohnChicago

YSJ - MDW

YSJMDW

Saint John

Wed 10/6

4:15 p.m.-9:40 a.m.

2 stops19h 25m

Chicago Midway

Thu 11/6

1:49 p.m.-10:00 a.m.

2 stops18h 11m

C$ 1,362
Cheapest one-way
Quickest one-way

Saint JohnChicago

YSJ - ORD

YSJORD

Saint John

Fri 8/5

4:30 p.m.-11:37 p.m.

2 stops9h 07m

C$ 437

Saint JohnChicago

YSJ - MDW

YSJMDW

Saint John

Fri 8/5

10:45 a.m.-6:33 p.m.

2 stops9h 48m

C$ 465

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/3

Showing 1-10 of 11 resultsSorted by cheapest first
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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), located 15.1 km from the city centre, is the airport you fly out of when you book flights from Saint John to Illinois.

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

    A quick flight from Saint John to Illinois can take about 5h 38m. Air Canada provides one of the quickest options available for as low as C$ 709. The distance between Saint John and Illinois is about 1802 km.

  • 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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When you search for this flight from St John to Illinois, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from St John to Illinois?

Cheapflights simply makes it quick and affordable to book flights from St John to Illinois by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from St John to Illinois with no change fees?

Certainly. Search results for flights to Illinois from St John shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from St John to Illinois become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Illinois from St John today and book when prices fit your budget.

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