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Flights from Dubuque to St. Louis

Find the cheapest flight options from Dubuque to St. Louis over the next three months. Book one-way tickets from €181 and round-trip tickets from €423.

      • DBQ 07:15
        5h
        1 stop
        STL 12:15
        Dubuque - St. Louis | Sat, Dec 13 | Denver Air Connection
        STL 08:00
        9h 55m
        1 stop
        DBQ 17:55
        St. Louis - Dubuque | Sun, Dec 14 | United Airlines
        €423 €621
        32% OFF
        32% OFF
        €621 €423
      • DBQ 07:15
        5h
        1 stop
        STL 12:15
        Dubuque - St. Louis | Fri, Dec 12 | Denver Air Connection
        STL 18:42
        23h 13m
        1 stop
        DBQ 17:55
        St. Louis - Dubuque | Fri, Dec 12 | United Airlines
        €515 €621
        17% OFF
        17% OFF
        €621 €515
      • DBQ 07:15
        15h 28m
        1 stop
        STL 22:43
        Dubuque - St. Louis | Wed, Dec 24 | Denver Air Connection
        STL 18:35
        23h 20m
        1 stop
        DBQ 17:55
        St. Louis - Dubuque | Sun, Dec 28 | United Airlines
        €534 €621
        14% OFF
        14% OFF
        €621 €534
      • DBQ 07:15
        7h 11m
        1 stop
        STL 14:26
        Dubuque - St. Louis | Fri, Dec 19 | Denver Air Connection
        STL 18:35
        23h 20m
        1 stop
        DBQ 17:55
        St. Louis - Dubuque | Fri, Dec 19 | United Airlines
        €559
        10% OFF
        €621 €559
      • DBQ 13:00
        17h 25m
        1 stop
        STL Invalid Date
        Dubuque - St. Louis | Sat, Dec 13 | Normal Airline
        STL 15:00
        6h
        Direct
        DBQ 16:00
        St. Louis - Dubuque | Mon, Dec 15 | Normal Airline
        Find More Flights
        Find More Flights
      • DBQ 07:15
        15h 43m
        1 stop
        STL 22:58
        Dubuque - St. Louis | Thu, Jan 22 | Denver Air Connection
        €181 €431
        57% OFF
        57% OFF
        €431 €181
      • DBQ 07:15
        5h 12m
        1 stop
        STL 12:27
        Dubuque - St. Louis | Fri, Jan 2 | Denver Air Connection
        €181 €431
        57% OFF
        57% OFF
        €431 €181
      • DBQ 07:15
        5h
        1 stop
        STL 12:15
        Dubuque - St. Louis | Mon, Dec 15 | Denver Air Connection
        €388 €431
        10% OFF
        10% OFF
        €431 €388
      • DBQ 13:00
        17h 25m
        1 stop
        STL Invalid Date
        Dubuque - St. Louis | Sat, Dec 13 | Normal Airline
        Find More Flights
        Find More Flights

Displayed flight fares from Dubuque to St. Louis are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight details for Dubuque to St. Louis

The distance between Dubuque and St. Louis is 423.24 km. Based on Trip.com's data, travel demand peaks in September. The off-season for travel is December.

Cheapest one-way flight price€181
Cheapest round-trip ticket price€423
Off-season for travelDecember
Peak season for travelSeptember
Flight distance423.24 km

Find the best time to fly from Dubuque to St. Louis

The cheapest time for Dubuque to St. Louis flights: Dec 14 to Dec 21 — one way flight prices from €173.

Cheapest flights
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  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from Dubuque to St. Louis, calculated over the upcoming 10 weeks.

Flight FAQs

  • What are the cheapest flights from Dubuque to St. Louis (DBQ-STL)?

    Based on Trip.com data, Denver Air Connection offers one-way fares as low as €181 on Cheapest nonstop routes (e.g. DBQ to STL on Thu, Jan 22), while Denver Air Connection offers Cheapest nonstop round-trips from €423 departing on Sat, Dec 13 and returning on Sun, Dec 14.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Dubuque to St. Louis is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Dubuque to St. Louis, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Jan 22, with one-way flights priced at just €181.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Denver Air Connection.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for St. Louis travel is around September.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Dubuque to St. Louis is December, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Dubuque to St. Louis on December 13, 2025 with Denver Air Connection, with prices starting at €422.
  • The time difference between St. Louis and Dubuque is 0h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.