HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
New Brunswick

$427+ Cheap flights from St. Louis (STL) to New Brunswick

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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YQM
Jul 16 — Jul 231
Thu 7/16
Thu 7/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to New Brunswick with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 16, 2026.

This Air Canada deal was found by Cheapflights users on 6/11. 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.
Sat 11/144:15 pm
STL
-
YFC
1 stop5h 25m
Air Canada
Wed 11/1811:55 am
YFC
-
STL
1 stop5h 35m
Air Canada
Deal found 6/11$744
This Air Canada deal was found by Cheapflights users on 6/15. 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.
Sat 10/178:55 am
STL
-
YFC
2 stops7h 20m
Air Canada
Wed 10/216:40 am
YFC
-
STL
2 stops9h 20m
Air Canada
Deal found 6/15$758

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 June 16, 2026.

Round-trip from

$744
(Air Canada)

One-way from

$427
(United Airlines)
From Lambert-St Louis to New Brunswick
Search Deals
One-way flight 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 June 16, 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

Sat 11/14

4:15 pm-11:40 pm

1 stop5h 25m

Fredericton

Wed 11/18

11:55 am-3:30 pm

1 stop5h 35m

$744

St. LouisFredericton

STL - YFC

STLYFC

Lambert-St Louis

Sat 10/17

8:55 am-5:06 pm

1 stop6h 11m

Fredericton

Wed 10/21

6:40 am-2:00 pm

2 stops9h 20m

$752
Cheapest one-way
Quickest one-way

St. LouisFredericton

STL - YFC

STLYFC

Lambert-St Louis

Wed 7/29

8:55 am-5:10 pm

1 stop6h 15m

$427

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

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 5h 25m. 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.