Cheap Flights from St. Louis (SUS) to Duluth (DLH)

Popular airlines from St. Louis, MO (SUS-Spirit of St. Louis) to Duluth, MN (DLH-Duluth Intl.)

Flights from St. Louis (SUS) to Duluth (DLH)
Origin airport
Spirit of St. Louis
Destination airport
Duluth Intl.
Distance
570 mi

St. Louis to Duluth Flights

The cheapest times to fly from St. Louis to Duluth

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

 

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

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

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 Duluth in 2025. 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 St. Louis to Duluth 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 Duluth 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 Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH) cost?
Secure a cheap one-way flight or cheap return flight from Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH)?
is the most affordable month to fly from SUS to DLH. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from SUS to DLH. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH)?
There are no daily direct flights departing from Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from SUS to DLH?
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 Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH)?
To avoid possible delays on the Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH) route, aim to 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 Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH) last-minute?
Last-minute fares from SUS to DLH are usually more expensive. To lock in the cheapest rates, start looking for flights early. That being said, if you're flexible with your travel dates, you may land a cheap fare right before you leave.
Is it cheaper to book a SUS to DLH flight and hotel package?
You'll generally save money by booking a SUS to DLH flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your ideal flights and accommodations, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Spirit of St. Louis Airport (SUS) to Duluth Intl. Airport (DLH)?
You can usually cancel or reschedule your SUS to DLH flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.