What are the cheapest airlines flying from Duluth to St. Louis round-trip?

Currently priced at $283, United Airlines will fly you from Duluth to St. Louis and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as $288. You may be able to fly from Duluth to St. Louis for 42% less than the average price by searching for these airlines.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Duluth to St. Louis as you normally would.

Most accurate provider : When it comes to deals on Duluth-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Duluth-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Duluth-St. Louis flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Duluth-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Duluth-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Yes. In addition to deals on Duluth to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

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

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Duluth to St. Louis.

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

Yes. Cheapflights offers flight deals from Duluth to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Cheap Flights from Duluth to St. Louis

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1. Tell us where you want to go

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2. Select your favorite providers

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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.

Find flight deals from Duluth to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	February
Cheapest in	December
Average price	$349

Provider with most accurate pricing for Duluth Intl-Lambert-St Louis flight deals.

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Provider most trusted by Cheapflights users for Duluth Intl-Lambert-St Louis flights.

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Highest demand for flights based on searches. 46% potential increase in price ($431 potential increase over avg. RT price).

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Cheapest flight prices on average. 15% potential price decrease ($65 potential savings vs. average RT price).

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Average for round-trip flights in April 2026

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Compare providers for flights from Duluth to St. Louis

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Duluth to St. Louis in April.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Duluth-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Duluth-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Duluth-St. Louis flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Duluth-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Duluth-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Duluth to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Duluth with our price prediction graph.

DLH-STL

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.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta and United Airlines from Duluth to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,465 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

8,465 reviews

Delta

7.9

Good

8,465 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,680 reviews

Delta

7.9

Good

8,465 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

What are the cheapest airlines flying from Duluth to St. Louis round-trip?
Currently priced at $283, United Airlines will fly you from Duluth to St. Louis and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as $288. You may be able to fly from Duluth to St. Louis for 42% less than the average price by searching for these airlines.
Can I find deals for flights from Duluth to St. Louis that include hotel bookings?
Yes. In addition to deals on Duluth to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Duluth to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Duluth to St. Louis.
Can I find deals for business class flights from Duluth to St. Louis?
Yes. Cheapflights offers flight deals from Duluth to St. Louis 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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Top 2 airlines flying from Duluth to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$283	Average$353	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$288	Average$368	FlexibilityNo cancel fee	On-timeN/A

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Cheap flights from Duluth to St. Louis (DLH - STL)

Find cheap flights from Duluth to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Duluth to St. Louis

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Compare providers for flights from Duluth to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Duluth to St. Louis in April.

Best time to book a flight from Duluth to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Duluth with our price prediction graph.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Delta and United Airlines from Duluth to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Duluth to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Duluth to St. Louis round-trip?

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

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

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

Traveling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Duluth to St. Louis

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Complete your trip

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

Search flights from Duluth to St. Louis by cabin class

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

Duluth and St. Louis flights

Browse other Duluth and St. Louis flight options. Last updated on April 29, 2026.

Other flights from Duluth

Browse through other flights departing from Duluth. Flights are based on user searches made on Cheapflights and were last updated on April 29, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to St. Louis

Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 29, 2026.

Top 2 airlines flying from Duluth to St. Louis

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