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St. Louis

Find cheap Delta flights to St. Louis

RDU — STL
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find Delta flight deals to St. Louis

Cheapest Delta flights from USA to St. Louis
Explore the most affordable Delta flight options available from USA to St. Louis. Find the lowest fares with prices last updated on July 27, 2026.

This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:45 pm
ATL
-
STL
Nonstop1h 42m
Delta
Tue 9/17:00 am
STL
-
ATL
Nonstop1h 37m
Delta
Deal found 7/27$117
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:34 pm
ATL
-
STL
Nonstop1h 43m
Delta
Sat 8/297:00 am
STL
-
ATL
Nonstop1h 37m
Delta
Deal found 7/22$127
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:05 am
ATL
-
STL
Nonstop1h 41m
Delta
Thu 8/207:00 am
STL
-
ATL
Nonstop1h 37m
Delta
Deal found 7/22$132

Flights to St. Louis with Delta at a glance

Find detailed information about Delta flights from USA to St. Louis. Explore the options provided by Delta to plan your journey from USA to St. Louis. Data last updated July 27, 2026.

Popular in

May

Cheapest in

October

Average price

$354

Round-trip from

$117

One-way from

$59

Good round-trip deal

$244 or less

Good one-way deal

$194 or less
Highest demand for flights to St. Louis with Delta; 5% potential price increase.
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Best time to find cheap flights to St. Louis with Delta; 0% potential price drop.
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Average price for flights to St. Louis with Delta (round-trip).
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Delta
  • Delta
  • 9/22-9/26
  • Nonstop
  • 3h 23m total
  • USA to St. Louis
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Delta
  • Delta
  • 8/25
  • Nonstop
  • 1h 42m total
  • USA to St. Louis
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Price to beat on a round-trip flight from the United States to St. Louis with Delta.
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Price to beat on a one-way flight from the United States to St. Louis with Delta.
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Cheapflights Insights

Find cheap Delta flights to St. Louis

How long is the flight to St. Louis with Delta?

On average, Delta flights from the United States to St. Louis take 2 hours 3 minutes. Flights to St. Louis from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

Delta weekly flight availability to St. Louis

The most flights to St. Louis operated by Delta are scheduled on a Friday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).

When is the best time to book a flight to St. Louis with Delta?

The best time to book a flight to St. Louis with Delta is 82 days before departure. On average, fares are higher if you book 2 days before departure.

When is the cheapest time to fly to St. Louis with Delta?

Users looking for the cheapest Delta fares to St. Louis should consider flying on Saturday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday evenings, when prices are usually at their highest.

FAQs about flights to St. Louis with Delta

  • Which airport do Delta flights arrive at when travelling to St. Louis?

    Delta flights on this route tend to land at Lambert-St Louis Airport.

  • Is Delta the cheapest airline for a flight to St. Louis?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to St. Louis tends to be with Allegiant Air.

  • Are there alternative airlines other than Delta that fly to St. Louis?

    Southwest, American Airlines and United Airlines all fly to St. Louis and offer an alternative to Delta.

  • How much is a flight to St. Louis with Delta?

    The average price for a return flight with Delta is $397; with a one-way flight around $271.

See more FAQs

Reviews of Delta

See what Cheapflights users have to say about their Delta experience.
Delta
7.8
Good
8,485 reviews
Overview

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Comfort

7.8

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