STL - DLH

$176 Find Cheap Flights from St. Louis to Duluth

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Duluth departing on 7/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Duluth

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Duluth, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Duluth, as well as popular online travel agencies
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Flights Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Duluth that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Duluth

Mon, Aug 18 - Tue, Aug 26
Delta Logo
6:00 am - 10:15 amSTL-DLH
4h 15m1 stop
Delta Logo
5:10 am - 8:36 amDLH-STL
3h 26m1 stop
$226Delta
Find Deal
Sun, Aug 17 - Tue, Aug 26
Delta Logo
6:00 am - 10:13 amSTL-DLH
4h 13m1 stop
Delta Logo
5:10 am - 10:37 amDLH-STL
5h 27m1 stop
$232Delta
Find Deal
Sun, Aug 17 - Sat, Aug 23
Delta Logo
6:00 am - 10:13 amSTL-DLH
4h 13m1 stop
Delta Logo
5:10 am - 10:49 amDLH-STL
5h 39m1 stop
$238Delta
Find Deal
Sat, Aug 23 - Tue, Aug 26
Delta Logo
3:30 pm - 7:21 pmSTL-DLH
3h 51m1 stop
Delta Logo
5:10 am - 10:37 amDLH-STL
5h 27m1 stop
$257Delta
Find Deal
Sat, Aug 23 - Sun, Aug 31
Delta Logo
3:30 pm - 7:21 pmSTL-DLH
3h 51m1 stop
Delta Logo
5:10 am - 8:36 amDLH-STL
3h 26m1 stop
$263Delta
Find Deal
Mon, Aug 18 - Fri, Aug 22
Delta Logo
6:00 am - 10:15 amSTL-DLH
4h 15m1 stop
Delta Logo
5:10 am - 10:37 amDLH-STL
5h 27m1 stop
$270Delta
Find Deal
Sat, Sep 6 - Fri, Sep 12
United Airlines Logo
3:20 pm - 10:05 pmSTL-DLH
6h 45m1 stop
United Airlines Logo
8:00 am - 2:19 pmDLH-STL
6h 19m1 stop
$284United Airlines
Find Deal
Mon, Aug 18 - Tue, Aug 26
Delta Logo
6:00 am - 10:15 amSTL-DLH
4h 15m1 stop
Delta Logo
5:10 am - 7:01 pmDLH-STL
13h 51m2 stops
$286Delta
Find Deal
Fri, Sep 5 - Wed, Sep 10
Delta Logo
6:00 am - 10:15 amSTL-DLH
4h 15m1 stop
Delta Logo
7:50 am - 2:24 pmDLH-STL
6h 34m1 stop
$291Delta
Find Deal
Sat, Sep 6 - Fri, Sep 12
United Airlines Logo
5:15 am - 10:05 pmSTL-DLH
16h 50m2 stops
United Airlines Logo
9:45 am - 2:19 pmDLH-STL
4h 34m1 stop
$412United Airlines
Find Deal
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KAYAK's insights & trends for St. Louis to Duluth flights

Get data-powered insights and trends into flights from St. Louis to Duluth to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Duluth?

The average price of all round-trip flights from St. Louis to Duluth clicked on KAYAK for each day over the last 12 months.

For St. Louis to Duluth, Tuesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Duluth back to St. Louis, the best deals are generally found on Wednesday, with Tuesday being the most expensive.

What is the cheapest month to fly from St. Louis to Duluth?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Duluth, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Duluth is April, where tickets cost $238 (return) on average. On the other hand, the most expensive months are November and June, where the average cost of round-trip tickets is $658 and $513 respectively.

Good to know

Low seasonMarch
High seasonAugust
Cheapest flight$176
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from St. Louis to Duluth

When to book flights from St. Louis to Duluth

Are your dates flexible? Find out the best times to travel from St. Louis to Duluth based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Duluth

  • What is the cheapest flight from St. Louis to Duluth?

    In the last 3 days, the lowest price for a flight from St. Louis to Duluth was $176 for a one-way ticket and $226 for a round-trip.

  • Do I need a passport to fly between St. Louis and Duluth?

    A passport is not required to fly from St. Louis to Duluth.

  • Which aircraft models fly most regularly from St. Louis to Duluth?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Duluth?

    SkyTeam, and Star Alliance are the airline alliances operating flights between St. Louis and Duluth, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Duluth, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Duluth are Delta and United Airlines. With an average price for the route of $338 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $513 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to Duluth?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Duluth.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Duluth?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Duluth from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Duluth?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Duluth with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and DLH can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Duluth?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Duluth from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from St. Louis to Duluth

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Duluth. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Duluth? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7969 reviews
7.9Comfort
8.2Boarding
7.9Entertainment
8.5Crew
7.3Food
Airline reviews

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

10.0 ExcellentTim, Jun 2025SFO - MSP
Read more Delta reviews

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Delta is a premier airline so my expectations are most always met.

Everything was good except when we're on a 6 hour flight at dinner time and all they offer as part of the fare are little bags of junk food, it's disappointing. Bring back food service without an added price.

Left on time and arrived early this extending our 31 minute transfer. Bags made it also!

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Nothing unusual. It was fine. I hate having to pay extra for my seat.

The flight was so late that I had to change connecting flights, turning a five-hour trip into a fourteen-hour nightmare.

My flight consistently said it was on time and the plane didn’t arrive until after 30 minutes after take off and nothing was announced to passengers

The fight was about 2 1/2 hours delayed, but that was weather related. The flight was also overbooked. But we were in Comfort plus so the flight was fine for us.

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

They changed my seats after I checked in and I was stressed from the time I saw that information until just before boarding, when the gate attendant fixed it, but it shouldn't have happened. And if it couldn't be prevented, then the people on the phone I spoke with should have done something to help, which they did not, nor did they offer me compensation, just meaningless apologies.

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

My flight was delayed a very short period of time but they did not hold my connecting flight to San Diego, also through United. So they closed the doors before we got off our plane. They would only have to help the door open for another five to ten minutes. So I missed a court deadline for a manditory mediation settlement conference for my client. I had to get an associate to be there in person and be on the phone with him relaying what he needs to do the entire time. The court was very upset with me and so was my client. United cannot be trusted.

Very rough getting into denver. my kid threw up it was so rough.

We were given vouchers we couldn’t use with a 5.5 hour delay

Cramped seat even in economy plus seat 10A. Over booked flight, no space for the bags

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Everything you need to know for your flight from St. Louis to Duluth

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