Cheap flights To Dupo (STL) from $29

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Cheap Flights to Dupo from $29 One Way, $69 Round Trip

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Sat, Apr 25 - Mon, Apr 27
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$69 Roundtrip, found 3 days ago
$69
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sat, Apr 25 from Denver Intl. to Lambert-St. Louis Intl., returning Mon, Apr 27, priced at $69 found 3 days ago
Sat, May 23 - Tue, May 26
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$69 Roundtrip, found 17 hours ago
$69
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Sat, May 23 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Tue, May 26, priced at $69 found 17 hours ago
Sat, Jun 6 - Mon, Jun 8
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$70 Roundtrip, found 5 days ago
$70
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Jun 6 from Denver Intl. to Lambert-St. Louis Intl., returning Mon, Jun 8, priced at $70 found 5 days ago
Tue, May 26 - Sat, May 30
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$75 Roundtrip, found 1 day ago
$75
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, May 26 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, May 30, priced at $75 found 1 day ago
Sat, Apr 18 - Sat, Apr 25
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$75 Roundtrip, found 6 days ago
$75
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sat, Apr 18 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Apr 25, priced at $75 found 6 days ago
Tue, Jun 16 - Tue, Jun 23
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$92 Roundtrip, found 2 days ago
$92
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Jun 16 from Denver Intl. to Lambert-St. Louis Intl., returning Tue, Jun 23, priced at $92 found 2 days ago
Thu, May 21 - Thu, May 28
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$99 Roundtrip, found 1 day ago
$99
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, May 21 from Denver Intl. to Lambert-St. Louis Intl., returning Thu, May 28, priced at $99 found 1 day ago
Wed, Apr 29 - Wed, Apr 29
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$129 Roundtrip, found 3 days ago
$129
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, Apr 29 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Wed, Apr 29, priced at $129 found 3 days ago
Fri, May 1 - Mon, May 4
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$142 Roundtrip, found 12 hours ago
$142
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Fri, May 1 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Mon, May 4, priced at $142 found 12 hours ago
Thu, May 7 - Sat, May 9
IAD
Washington Dulles Intl.
STL
Lambert-St. Louis Intl.
$142 Roundtrip, found 21 hours ago
$142
Roundtrip
found 21 hours ago
Select Frontier Airlines flight, departing Thu, May 7 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Sat, May 9, priced at $142 found 21 hours ago

Dupo Flight Information

Traveling To
Dupo
Destination Airport IATA Code
STL
Number of Airlines Serving
Airlines
Frontier Airlines, Southwest Airlines
Flight Price
$69
Earliest Departing Flight
Latest Departing Flight

Book Your Flight & Hotel Together & Save

Dupo economy flight packages

Price found within the past 48 hours. Click for updated prices.
Hilton Garden Inn Chesterfield
3.0-star property

Hilton Garden Inn Chesterfield

May 22 - May 26

4 night stay

Atlanta (ATL) to St. Louis (STL)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $531, price is now $382 per person
$382
per person
found 1 day ago
The Wildwood Hotel
3.5-star property

The Wildwood Hotel

May 22 - May 26

4 night stay

Atlanta (ATL) to St. Louis (STL)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $715, price is now $395 per person
$395
per person
found 1 day ago
The Cheshire
4.0-star property

The Cheshire

May 22 - May 26

4 night stay

Atlanta (ATL) to St. Louis (STL)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $690, price is now $476 per person
$476
per person
found 1 day ago
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See all available trips from Atlanta to Dupo
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Dupo first class flight packages

Price found within the past 48 hours. Click for updated prices.
The Knight Center at Washington University
2.5-star property

The Knight Center at Washington University

9.4/10 Exceptional! (505 reviews)

May 21 - May 24

3 night stay

Newark Liberty Intl. Airport (EWR) to St. Louis (STL)

Delta • Roundtrip • FirstClass
Price was $957, price is now $866 per person
$866
per person
found 22 hours ago
Very nice lobby restaurant and bar

Reviewed on Sep 15, 2025

The Wildwood Hotel
3.5-star property

The Wildwood Hotel

9.2/10 Wonderful! (1,627 reviews)

May 21 - May 24

3 night stay

Newark Liberty Intl. Airport (EWR) to St. Louis (STL)

Delta • Roundtrip • FirstClass
Price was $1,159, price is now $872 per person
$872
per person
found 22 hours ago
This hotel was fantastic! Check in was easy with friendly staff, the room was beautiful and well appointed. Breakfast was advertised as a Continental, however they had hot options as well, which was great. Every staff member we saw in the hotel said hi and was friendly. I would definitely stay here again!

Reviewed on Oct 16, 2025

The Cheshire
4.0-star property

The Cheshire

8.6/10 Excellent! (1,011 reviews)

May 21 - May 24

3 night stay

Newark Liberty Intl. Airport (EWR) to St. Louis (STL)

Delta • Roundtrip • FirstClass
Price was $1,050, price is now $943 per person
$943
per person
found 22 hours ago
We always stay here when in St. Louis. Love the place. Nice atmosphere, great pub.

Reviewed on Sep 2, 2025

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Dupo

Orbitz provides convenient, one-stop shopping for travelers looking for budget flights to Dupo or any other low fare domestic or international air travel.

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You can find amazing discount fares with Orbitz’s guaranteed low prices or take advantage of last-minute sales and special travel packages. You can also earn points towards your airline frequent flyer programs when you book qualified flights to Dupo. That means you can rack up money-saving points and miles for future use while saving money now.

We Are Just a Phone Call Away If You Need Us

Booking, changing, or canceling your Dupo flights is a breeze with Orbitz’s online and mobile tools, but that doesn't mean that we leave you hanging if you want to speak with one of our representatives. If you need help, just contact our Customer Service by email or phone. To enjoy a less stressful trip, be sure to sign up for instant alerts so we can send you any updates or delays relating to your flights to Dupo to your mobile phone or email.

Frequently asked questions

Which airlines fly to Dupo?
Choose from 20 airlines that service Lambert-St. Louis Intl. Airport (STL), the leading airport in the city. Among all that choice, you're certain to find an incredible deal. Here are some of the top international carriers that'll get you to Dupo — and then discovering every corner of this city:

  • Air Canada - 35 flights to Dupo per month
  • Frontier Airlines - 17 flights to Dupo per month
  • Lufthansa - 3 flights to Dupo per month

What is the best airport to fly to in Dupo?
Lambert-St. Louis Intl. Airport (STL) is the main arrival point to the city, so your toughest decision will be the window seat or the aisle seat. Central Dupo is around 18 miles away and where many travelers choose to book a hotel.
How much is a flight to Dupo?
If you're after round-trip flights, fares ranged from $69 to $142 this week. The most affordable one-way ticket was $29, originating in Denver (DEN).
How to book the cheapest flight to Dupo?
Picking up cheap flights to Dupo is as easy as booking with Orbitz. But if you'd like to make sure you're getting the best flight deals around, here are some suggestions to keep in mind:

  • Taking off from or arriving at other airports may work out to be cheaper. Type in your preferred departure and arrival points. Next, select the 'Nearby airports' function below the form fields to see what your options are.
  • Also, click on the 'Show flexible dates' option to compare the airfares on days around your selected departure. You may be able to find cheaper flight deals if your dates are flexible.
  • Hit 'Show options' to filter your search results. You can choose your preferred seating class and airline here. Under 'Sort & Filter' to the left, you can even select whether you want to fly in the morning, afternoon or evening.
  • Reserve your seat as soon as you've sorted your travel dates. While it does happen now and then, airline tickets rarely get more affordable as your departure date gets closer.
  • Save even more on your adventure by bundling your flights, hotels and car rental into a package with Orbitz. Your credit card will thank you for it.
  • Don't fly during peak seasons if possible. By steering clear of school vacations and summer, you can make superb savings on your airfare.

How long is a flight to Dupo?
Your city of origin, which airport you depart from and whether you travel direct — flight times depend on many things. But we've put together the average times for some busy routes to Dupo:

  • New York, NY (LGA-LaGuardia) to Lambert-St. Louis Intl. Airport (STL) - 2 hours and 28 minutes
  • Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 41 minutes
  • Chicago, IL (ORD-O'Hare Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 27 minutes

What is the best time to book a flight to Dupo?
Generally speaking, January is the best time to purchase your airfare. This is followed by February and August. Keep this in mind while tracking down a cheap flight to Dupo.
What day of the week is the cheapest to book a flight to Dupo?
Get a great flight deal by making a booking on a Tuesday, Wednesday or Saturday. These are typically the best days of the week to land cheap seats to Dupo.
What is the cheapest day of the week to fly to Dupo?
According to Orbitz data from 2020, you ought to hop on a plane on a Monday to score cheap flights to Dupo. Next most inexpensive day? Tuesday. Saturday costs the most. So, think about leaving early in the week if you'd love to score a wallet-friendly fare without paying premium prices.
What is the cheapest month to fly to Dupo?
According to Orbitz data, it's better to fly out in August. This is generally a great month to land cheap flights to Dupo. Keep in mind that the most expensive time to fly is in June.
Which airlines allow free cancellation?
When you search for flights on Orbitz, click on "Filter by flexible change policies." This filter will show you all the airlines offering free cancellation within 24 hours of booking and no change fees. Relax knowing that if your travel dates change, your ticket can too.
What do I need for the flight to Dupo?
The secret to a hassle-free flight is preparation. Listed below are some tips to help you get ready for your adventure:

  • Before you take your seat on the plane, you'll need to present proof of identification, like your passport. You'll also need your boarding pass. If you're traveling with the kids, check with your airline about which documents they require — if any.
  • Make time fly by even quicker on your short flight by packing the right things. Think snacks, a water bottle and entertainment. If you want your journey to Dupo to pass nice and quietly, squeeze some headphones in your bag as well.
  • It can get cold on the plane. If you don't want to shiver your way through the flight, dress in layers.

How many direct flights are there to Dupo?
Your thrilling adventure is just one easy plane ride away, with 482 direct services to Dupo every month. Search for a suitable flight with Orbitz and lock in a rewarding deal with Southwest Airlines, American Airlines or Delta Air Lines. Other respected carriers that provide nonstop services include United Airlines, Cape Air and Frontier Airlines.
How do I get cheap first-class/business deals to Dupo?
If you think a business or first-class airfare is out of your price range, think again. Here are some tips to help you find a premium flight to Dupo for less:

  • Be flexible. By being open to different travel dates, you'll have more chances of picking up a deal on your airfares.
  • Look for a low-cost airline that has seats in business class. They usually come with extra space and a glass of bubbly — and a nicer price.
  • Make a bid for an upgrade. Some airlines hold online auctions that let you put down a price for a seat up the front. You can also try upgrading with points earned through a loyalty program.

How to get into Dupo from the airport?
You may want to drive the 18 miles southeast to central Dupo. If so, there are various Lambert-St. Louis Intl. Airport (STL) car rental outlets to pick from at Lambert-St. Louis Intl. Airport (STL), including Budget, Avis and Thrifty Car Rental. Otherwise, use public transportation or take a taxi to head downtown, then rent a ride from Dupo car rentals.
What is the best time to go to Dupo?
If you'd like to soak up the culture of Dupo in peak season, March, May and June are the best months to visit. June 20 marks the start of summertime in the Northern Hemisphere and is a perfect time to travel if you're hooked on being outside. Around this time of the year, average daily temperatures usually range from 70 ºF to 85 ºF.

More to Explore

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.