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

Currently priced at $263, Delta will fly you from Duluth to St. Louis and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $283. You may be able to fly from Duluth to St. Louis for 51% 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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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	$433

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. 41% potential increase in price ($383 potential increase over avg. RT price).

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Cheapest flight prices on average. 13% potential price decrease ($67 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July.

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

7.8

Good

8,494 reviews

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

Delta

7.8

Good

8,494 reviews

Delta

7.8

Good

8,494 reviews

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

United Airlines

7.4

Good

10,034 reviews

Delta

7.8

Good

8,494 reviews

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

Related info for your journey

What are the cheapest airlines flying from Duluth to St. Louis round-trip?
Currently priced at $263, Delta will fly you from Duluth to St. Louis and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $283. You may be able to fly from Duluth to St. Louis for 51% 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
Delta	Cheapest$263	Average$383	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$283	Average$428	FlexibilityNo cancel fee	On-time69%

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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 July.

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

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 July 26, 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 July 26, 2026.

Popular flight searches

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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 July 26, 2026.

Top 2 airlines flying from Duluth to St. Louis

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