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

Airlines like Air Canada and United Airlines fly from St. Louis to New Brunswick in about 5h 53m. The time it takes to get you to your destination can typically vary by up to 8h 07m. St. Louis and New Brunswick are separated by a distance of 1306 mi. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in New Brunswick ranges from 3.0 - 4.2 inches per month. March is typically the wettest month, when rainfall can reach 4.2 in. August is typically the driest time to visit New Brunswick when rainfall is around 3.0 in.

If weather is an important factor for your trip to New Brunswick, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 17.6 F).

What are the most popular airlines that fly from St. Louis to New Brunswick?

The most popular airlines flying from St. Louis to New Brunswick are Lufthansa, United Airlines and British Airways. Something to consider prior to booking your flight.

What is the cheapest time of day to fly from STL to NB?

When flying from St. Louis to New Brunswick, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

$867+ Cheap Flights from St. Louis to New Brunswick

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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 September 17, 2026.

Mon 11/24:05 pm -

1 stop5h 53m

Thu 11/56:25 am -

2 stops11h 01m

Deal found 9/15

$867

Mon 11/26:00 am -

2 stops14h 00m

Thu 11/56:25 am -

2 stops17h 27m

Deal found 9/15

$898

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Round-trip from	$867 (Air Canada)

From Lambert-St Louis to New Brunswick

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Route

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St. LouisFredericton

STL Lambert-St Louis - YFC Fredericton

STLYFC

Lambert-St Louis

Mon 11/2

4:05 pm-11:58 pm

1 stop5h 53m

Fredericton

Thu 11/5

6:25 am-3:26 pm

2 stops11h 01m

$867

St. LouisFredericton

STL Lambert-St Louis - YFC Fredericton

STLYFC

Lambert-St Louis

Mon 11/2

6:00 am-10:00 pm

2 stops14h 00m

Fredericton

Thu 11/5

6:25 am-9:52 pm

2 stops17h 27m

$898

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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STL-YFC

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Everything you need to know about your flight from St. Louis to New Brunswick

STL-CANB

STL-YFC

No data available for this route at this time. Please check back soon.

Related info for your journey

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 and United Airlines fly from St. Louis to New Brunswick in about 5h 53m. The time it takes to get you to your destination can typically vary by up to 8h 07m. St. Louis and New Brunswick are separated by a distance of 1306 mi. Both multi-stop and nonstop flights can be found to your destination and back.
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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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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.

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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 September 17, 2026.

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 September 17, 2026.

Best flights from St. Louis to New Brunswick
Discover carefully curated flight deals from St. Louis to New Brunswick that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.

Discover carefully curated flight deals from St. Louis to New Brunswick that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.

Find flight deals from St. Louis to New Brunswick

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

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Related info for your journey

What airport do you fly from for flights from St. Louis to New Brunswick?

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

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

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

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

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.

Alternative routes for St. Louis to New Brunswick

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to New Brunswick by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from St. Louis to New Brunswick by cabin class

Find flights from St. Louis to New Brunswick, based on your preferred cabin class, be it economy, premium economy, business, or first class.

St. Louis and New Brunswick flights

Browse other St. Louis and New Brunswick flight options. Last updated on September 17, 2026.

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$867+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.

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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to New Brunswick

Cheapest flights from St. Louis to New BrunswickExplore 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 September 17, 2026.

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 September 17, 2026.

Best flights from St. Louis to New BrunswickDiscover carefully curated flight deals from St. Louis to New Brunswick that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.

Discover carefully curated flight deals from St. Louis to New Brunswick that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.

Find flight deals from St. Louis to New Brunswick

Round-trip from

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Use the filters below to find and compare flights from St. Louis to New Brunswick that are best for you.

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

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Cheapflights Insights

Related info for your journey

What airport do you fly from for flights from St. Louis to New Brunswick?

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

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

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

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

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.

Alternative routes for St. Louis to New Brunswick

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to New Brunswick by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from St. Louis to New Brunswick by cabin class

Find flights from St. Louis to New Brunswick, based on your preferred cabin class, be it economy, premium economy, business, or first class.

St. Louis and New Brunswick flights

Browse other St. Louis and New Brunswick flight options. Last updated on September 17, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

100% Free

Book with Flexibility

Travel Smart

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 September 17, 2026.

Best flights from St. Louis to New Brunswick
Discover carefully curated flight deals from St. Louis to New Brunswick that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.