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$652+ Cheap flights from St. Louis (STL) to New Brunswick

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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YQM
May 30 — Jun 61
Sat 5/30
Sat 6/6
1 adult, Economy
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Cheap flight deals from St. Louis to New Brunswick

Cheapest flights from St. Louis to New Brunswick
Explore the most affordable flight options available from St. Louis to New Brunswick. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2026.

This Air Canada deal was found by Cheapflights users on 4/26. 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.
Fri 10/238:55 am
STL
-
YFC
1 stop6h 11m
Air Canada
Tue 10/2711:55 am
YFC
-
STL
1 stop5h 35m
Air Canada
Deal found 4/26$652
This Air Canada deal was found by Cheapflights users on 4/26. 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 5/267:05 am
STL
-
YFC
2 stops8h 50m
Air Canada
Tue 6/96:25 am
YFC
-
STL
2 stops7h 41m
Air Canada
Deal found 4/26$699
This Air Canada deal was found by Cheapflights users on 4/29. 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.
Wed 5/277:05 am
STL
-
YFC
2 stops8h 50m
Air Canada
Thu 5/286:25 am
YFC
-
STL
2 stops7h 41m
Air Canada
Deal found 4/29$710

Find flight deals from St. Louis to New Brunswick

Keep the following information in mind while searching for St. Louis to New Brunswick flight deals. Data was last updated April 30, 2026.

Round-trip from

$652
(Air Canada)
From Lambert-St Louis to New Brunswick
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to New Brunswick 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 April 30, 2026.
Use the filters below to find and compare flights from St. Louis to New Brunswick that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisFredericton

STL - YFC

STLYFC

Lambert-St Louis

Fri 10/23

8:55 am-5:06 pm

1 stop6h 11m

Fredericton

Tue 10/27

11:55 am-3:30 pm

1 stop5h 35m

$652

St. LouisFredericton

STL - YFC

STLYFC

Lambert-St Louis

Tue 5/26

7:05 am-5:55 pm

2 stops8h 50m

Fredericton

Tue 6/9

6:25 am-12:06 pm

2 stops7h 41m

$699

St. LouisFredericton

STL - YFC

STLYFC

Lambert-St Louis

Wed 5/27

7:05 am-5:55 pm

2 stops8h 50m

Fredericton

Thu 5/28

6:25 am-12:06 pm

2 stops7h 41m

$699

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Sorted by cheapest first

Best time to book a flight from St. Louis to New Brunswick

Have a flexible travel schedule? Discover the best time to fly to New Brunswick from St. Louis 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 St. Louis to New Brunswick
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. Louis to New Brunswick. 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 St. Louis to New Brunswick?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to New Brunswick.

  • How long is the flight from St. Louis to New Brunswick?

    Airlines like Air Canada fly from St. Louis to New Brunswick in about 6h 11m. The time it takes to get you to your destination can typically vary by up to . St. Louis and New Brunswick are separated by a distance of 1306 mi.

  • Can I find deals for flights from St. Louis to New Brunswick that include hotel bookings?

    Yes. In addition to deals on St. Louis to New Brunswick flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to New Brunswick?

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

  • Can I find deals for business class flights from St. Louis to New Brunswick?

    Yes. Cheapflights offers flight deals from St. Louis to New Brunswick 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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