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Gustavus

$1,264+ Cheap flights from Illinois to Gustavus (GST)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — GST
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Find flight deals from Illinois to Gustavus

Cheapest flights from Illinois to Gustavus
Explore the most affordable flight options available from Illinois to Gustavus. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2310:00 amORD - GST
2 stops33h 43mAlaska Airlines
Wed 8/275:29 pmGST - ORD
2 stops25h 35mAlaska Airlines
Deal found 8/13$1,264
This Alaska Airlines deal was found by Cheapflights users on 8/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:55 pmORD - GST
2 stops25h 46mAlaska Airlines
Thu 8/215:29 pmGST - ORD
2 stops17h 55mAlaska Airlines
Deal found 8/14$1,488

Best time to book a flight from Illinois to Gustavus

Have a flexible travel schedule? Discover the best time to fly to Gustavus from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Gustavus
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Related info for your journey

Find useful and relevant information for your journey from Illinois to Gustavus. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Gustavus from Illinois?

    For a flight from Illinois to Gustavus, you will be flying into Gustavus Arpt. Gustavus Arpt (GST) is just 1.2 mi from the center of the city.

  • Can I find deals for flights from Illinois to Gustavus that include hotel bookings?

    Yes. In addition to deals on Illinois to Gustavus flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Gustavus?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Gustavus.

  • Can I find deals for business class flights from Illinois to Gustavus?

    Yes. Cheapflights offers flight deals from Illinois to Gustavus by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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