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$538+ 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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YQM
Mar 31 — Apr 71
Tue 3/31
Tue 4/7
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 March 1, 2026.

This Gotogate deal was found by Cheapflights users on 2/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/114:05 pm
STL
-
YFC
2 stops16h 14m
Air Canada
Sat 4/186:40 am
YFC
-
STL
2 stops10h 44m
Air Canada
Deal found 2/25$538
This Air Canada deal was found by Cheapflights users on 2/26. 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.
Wed 8/128:55 am
STL
-
YFC
1 stop6h 12m
Air Canada
Fri 8/146:45 am
YFC
-
STL
2 stops9h 17m
Air Canada
Deal found 2/26$596
This Air Canada deal was found by Cheapflights users on 2/24. 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.
Thu 5/217:05 am
STL
-
YFC
2 stops8h 50m
Air Canada
Tue 5/2612:15 pm
YFC
-
STL
1 stop9h 49m
Air Canada
Deal found 2/24$618
This Air Canada deal was found by Cheapflights users on 2/24. 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.
Thu 5/217:05 am
STL
-
YFC
2 stops8h 50m
Air Canada
Mon 5/254:10 pm
YFC
-
STL
2 stops21h 56m
Air Canada
Deal found 2/24$652

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 March 1, 2026.

Round-trip from

$538
(Gotogate)
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 March 1, 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

St. LouisFredericton

STL - YFC

STLYFC

Lambert-St Louis

Wed 8/12

8:55 am-5:07 pm

1 stop6h 12m

Fredericton

Fri 8/14

6:45 am-2:02 pm

2 stops9h 17m

$596

St. LouisFredericton

STL - YFC

STLYFC

Lambert-St Louis

Fri 5/22

7:05 am-5:55 pm

2 stops8h 50m

Fredericton

Tue 5/26

12:15 pm-8:04 pm

1 stop9h 49m

$618

St. LouisFredericton

STL - YFC

STLYFC

Lambert-St Louis

Thu 5/21

7:05 am-5:07 pm

1 stop8h 02m

Fredericton

Mon 5/25

12:15 pm-8:04 pm

1 stop9h 49m

$637

St. LouisFredericton

STL - YFC

STLYFC

Lambert-St Louis

Sat 5/23

7:05 am-5:07 pm

1 stop8h 02m

Fredericton

Mon 5/25

12:15 pm-8:04 pm

1 stop9h 49m

$637

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/26

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 12m. 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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