$423 Cheap Flights from St. Louis (STL) to Fredericton (YFC)

View $423 flight on Sat, Nov 15, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Fredericton, NB (YFC-Greater Fredericton Intl.)

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Cheap Flights from St. Louis to Fredericton (STL-YFC)

Prices were available within the past 7 days and start at $423 for one-way flights and $1,154 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Fri, Oct 10 - Tue, Oct 14
STL
St. Louis
YFC
Fredericton
$1,154 Roundtrip, found 1 day ago
$1,154
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 10 from St. Louis to Fredericton, returning Tue, Oct 14, priced at $1,154 found 1 day ago
Air Canada
Fri, Oct 10 - Tue, Oct 14
STL
St. Louis
YFC
Fredericton
$1,179 Roundtrip, found 1 day ago
$1,179
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 10 from St. Louis to Fredericton, returning Tue, Oct 14, priced at $1,179 found 1 day ago
Air Canada
Fri, Oct 10 - Tue, Oct 14
STL
St. Louis
YFC
Fredericton
$1,186 Roundtrip, found 1 day ago
$1,186
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 10 from St. Louis to Fredericton, returning Tue, Oct 14, priced at $1,186 found 1 day ago
Air Canada
Fri, Oct 10 - Tue, Oct 14
STL
St. Louis
YFC
Fredericton
$1,192 Roundtrip, found 1 day ago
$1,192
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 10 from St. Louis to Fredericton, returning Tue, Oct 14, priced at $1,192 found 1 day ago
Air Canada
Fri, Oct 10 - Tue, Oct 14
STL
St. Louis
YFC
Fredericton
$1,197 Roundtrip, found 1 day ago
$1,197
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 10 from St. Louis to Fredericton, returning Tue, Oct 14, priced at $1,197 found 1 day ago
Air Canada
Fri, Oct 10 - Tue, Oct 14
STL
St. Louis
YFC
Fredericton
$1,209 Roundtrip, found 1 day ago
$1,209
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 10 from St. Louis to Fredericton, returning Tue, Oct 14, priced at $1,209 found 1 day ago
Air Canada
Fri, Oct 10 - Tue, Oct 14
STL
St. Louis
YFC
Fredericton
$1,212 Roundtrip, found 1 day ago
$1,212
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 10 from St. Louis to Fredericton, returning Tue, Oct 14, priced at $1,212 found 1 day ago
United
Fri, Oct 10 - Tue, Oct 14
STL
St. Louis
YFC
Fredericton
$1,221 Roundtrip, found 1 day ago
$1,221
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 10 from St. Louis to Fredericton, returning Tue, Oct 14, priced at $1,221 found 1 day ago
Alaska Airlines
Wed, Oct 15 - Wed, Oct 22
STL
St. Louis
YFC
Fredericton
$1,223 Roundtrip, found 2 days ago
$1,223
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Oct 15 from St. Louis to Fredericton, returning Wed, Oct 22, priced at $1,223 found 2 days ago
Air Canada
Fri, Oct 10 - Tue, Oct 14
STL
St. Louis
YFC
Fredericton
$1,227 Roundtrip, found 1 day ago
$1,227
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 10 from St. Louis to Fredericton, returning Tue, Oct 14, priced at $1,227 found 1 day ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC) cost?
Grab a cheap one-way flight from $423 or cheap return flight from $1,154 from Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC)?
The cheapest month to fly from STL to YFC is October, when demand is low. Off-peak season is usually when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STL to YFC flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC)?
There are no daily nonstop flights available from Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from STL to YFC?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC) route, travel before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC) last-minute?
Booking your flight from STL to YFC shortly before your getaway is usually more expensive. However, if you're flexible with your itinerary, you could score a cheap last-minute fare.
Is it cheaper to book a STL to YFC flight and hotel package?
Securing a STL to YFC flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Choose from our impressive range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Greater Fredericton Intl. Airport (YFC)?
It's usually possible to reschedule or cancel your STL to YFC flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Greater Fredericton Intl.
Roundtrip price
$1,153
Distance
1307 mi

Book with confidence

Book with confidence

St. Louis to Fredericton Flights

The cheapest times to fly from St. Louis to Fredericton

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Fredericton are during the month of October. You can find some of the cheapest flights from St. Louis to Fredericton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Fredericton

Sunday is one of the best days to book for cheap flights from St. Louis to Fredericton: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Fredericton

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Fredericton in 2025. You can also book with separate airlines for your outbound and return journeys, from $423 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Fredericton flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Fredericton airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Fredericton Flights

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Explore a world of travel with Expedia

*Available to One Key members.