$29 Cheap Flights to Dupo, IL

Popular airlines to Dupo

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How much is the cheapest flight to Dupo?

Prices were available within the past 7 days and start at $29 for one-way flights and $58 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Southwest Airlines
United
American Airlines
Alaska Airlines

Find the cheapest month to fly from Columbus (CMH) to St. Louis (STL)

October is typically the cheapest month to fly

From $137 - $448 per traveler.

Alternative airports near Dupo

Prices were available within the past 7 days. Prices and availability are subject to change.

Frequently asked questions

What month is the cheapest to fly to Dupo?
January is the cheapest month to fly to Dupo. Demand is lower then, so you're likely to get a good deal. Booking your trip outside of public holidays and school breaks could also help you save.
Which US cities have the cheapest flights to Dupo?
Land cheap flights to Dupo from Chicago, Dallas and Denver. These cities typically offer the lowest fares to this popular destination. But remember that stopovers, seasonality and demand will also influence rates, so stay flexible and book when prices are right.
Which US cities fly direct to Dupo?
Choose from 55 US cities providing direct flights to Dupo. When reserving on Expedia, check the "Direct flights only" box to compare nonstop routes. Fly to Dupo from any of these cities:

  • Chicago
  • Dallas
  • Denver
  • New York
  • Atlanta

How to find a cheap flight to Dupo?
Jetting off in the low season and booking early are two easy ways to get cheap flights to Dupo. Or, consider flying on a Thursday, which is on average 16% cheaper than leaving on a Sunday.* Want to be the first to know as soon as fares drop? Simply set up price tracking on the Expedia app to get real-time updates.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to Dupo?
Being flexible about your plans can help you to secure last-minute deals on cheap flights to Dupo. To view all the available options, consider looking at different ticket types, changing your Dupo vacation dates, leaving from an alternative airport or using another carrier.
How far in advance should I book a flight to Dupo?
Find the departure dates you want and a fare you'll love by booking your domestic flight to Dupo up to 28 days in advance. Lock in tickets between two and four months ahead if you're headed to Dupo from an international destination.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to Dupo?
Generally, you can find cheap flights to Dupo on a Sunday. You can save around 8% on average compared to booking on a Friday, which is often the most expensive day for tickets.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to Dupo?
A total of 10 carriers connect 33 airports across the world to Dupo. Here are some of the most popular airlines to Dupo, where Lambert-St. Louis Intl. Airport (STL) is the major gateway:

  • Delta Air Lines
  • American Airlines
  • United Airlines
  • Southern Airways Express

Where do you fly into Dupo?
Lambert-St. Louis Intl. Airport (STL) is the main hub for travelers flying to Dupo. Or you could arrive at St. Louis Downtown Airport (CPS). Compare fares between these airports to find the most convenient or cost-effective way to fly to Dupo.
How far is the airport from central Dupo?
If you're arriving at Lambert-St. Louis Intl. Airport (STL), you'll be roughly 18 mi northwest of the center of Dupo.
Can I save money by booking a Dupo trip package?
Bundle your flights and accommodations and you could save hundreds of dollars. What's more, you can add extras like car rentals and tours to your Dupo flight and hotel package deal. With Expedia, it's simple to book all your Dupo travel arrangements in the same place.
Can I change or cancel my flight to Dupo?
You can often cancel or change your flight to Dupo within 24 hours of booking. However, be mindful that some flights are non-refundable. In those cases, you may be issued credit for a future trip rather than a direct refund. Be sure to check the airline's rules and restrictions in your itinerary for exact details. You can use Expedia's "Changes included" or "No cancel fee" filters during your search to find cheap flights to Dupo with flexible change policies. To learn more, head to our Customer Service Portal.

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Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
$58

Trending flights to Dupo

Prices were available within the past 7 days and start at $29 for one-way flights and $58 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines

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