Cheap Flights from Thunder Bay (YQT) to St. Louis (STL)

Popular airlines from Thunder Bay, ON (YQT-Thunder Bay Intl.) to St. Louis Lambert Intl. Airport (STL)

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Flights from Thunder Bay (YQT) to St. Louis (STL)
Origin airport
Thunder Bay Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
667 mi

Thunder Bay to St. Louis Flights

The cheapest times to fly from Thunder Bay to St. Louis

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 Thunder Bay to St. Louis are during the month of . You can find some of the cheapest flights from Thunder Bay to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Thunder Bay to St. Louis

Sunday is one of the best days to book for cheap flights from Thunder Bay to St. Louis: 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 Thunder Bay to St. Louis

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 Thunder Bay to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from 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 Thunder Bay to St. Louis 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 Thunder Bay to St. Louis 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.

 

Frequently asked questions

How much does a flight from Thunder Bay Intl. Airport (YQT) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight or cheap return flight from Thunder Bay Intl. Airport (YQT) to Lambert-St. Louis Intl. Airport (STL) 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 Thunder Bay Intl. Airport (YQT) to Lambert-St. Louis Intl. Airport (STL)?
Planning your getaway for is a great way to save, as it's the cheapest month for flights between YQT and STL. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Thunder Bay Intl. Airport (YQT) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from YQT to STL, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Thunder Bay Intl. Airport (YQT) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to take a flight with a layover when traveling from Thunder Bay Intl. Airport (YQT) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from YQT to STL?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary based on various factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Thunder Bay Intl. Airport (YQT) to Lambert-St. Louis Intl. Airport (STL)?
To touch down at Lambert-St. Louis Intl. Airport (STL) without delays, choose a flight that leaves from Thunder Bay Intl. Airport (YQT) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Thunder Bay Intl. Airport (YQT) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your ticket from YQT to STL shortly before your getaway is usually more expensive. However, if there's some wiggle room with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a YQT to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a YQT to STL flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place will take the hassle out of planning your trip. Simply pick your flights and choose from our extensive range of stays, then customize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Thunder Bay Intl. Airport (YQT) to Lambert-St. Louis Intl. Airport (STL)?
In most instances, you can modify or cancel your YQT to STL flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you want further information, go to our Customer Service portal.

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