One of the northermost cypress swamps in the States, the Cache River State Natural area is home to Cypress trees that are over 1000 years old. This is shot from the hiking trail (no boat), and was just a sampling of the scores of cypress trees all around. #treetrove

Cheap Hotels in Southwest Illinois, IL from $49

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Our top choices for Southwest Illinois cheap hotels

Baymont by Wyndham O'Fallon St. Louis Area

O'Fallon

Sonny

$44 nightly

Dec 25 - Dec 26

Total with taxes and fees

Comfort Suites Mount Vernon

Mount Vernon

Don

$109 nightly

Dec 25 - Dec 26

Total with taxes and fees

Deluxe Studio Suite, 1 King Bed, Non Smoking | Pillowtop beds, in-room safe, desk, laptop workspace

Super 8 by Wyndham O'Fallon

O'Fallon

Julian

$43 nightly

Jan 4 - Jan 5, 2026

Total with taxes and fees

Basic Room, 2 Queen Beds, Non Smoking | Desk, free WiFi, bed sheets

Days Inn by Wyndham Troy IL

Troy

Tammie

$66 nightly

Dec 26 - Dec 27

Total with taxes and fees

Drury Plaza Hotel Mt. Vernon

Mount Vernon

Duane

$94 nightly

Jan 1 - Jan 2, 2026

Total with taxes and fees

Quality Inn & Suites Marion

Marion

janet

$59 nightly

Jan 22 - Jan 23, 2026

Total with taxes and fees

University Inn of Carbondale

Carbondale

Jesse

$60 nightly

Dec 25 - Dec 26

Total with taxes and fees

SureStay Hotel by Best Western Whittington Rend Lake

Whittington

Stephen

$68 nightly

Dec 31 - Jan 1, 2026

Total with taxes and fees

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Find out more about Southwest Illinois

Discover cheap things to do in Southwest Illinois

Southwest Illinois offers a paradise of affordable activities and sights for budget-conscious travelers eager to explore without breaking the bank. Start your adventure at the Cahokia Mounds State Historic Site, where you can wander through ancient Native American earthworks—entry is free, and the views from the mounds are spectacular. If your family enjoys the great outdoors, the scenic trails at the Riverlands Migratory Bird Sanctuary provide a perfect spot for hiking and birdwatching, with no admission fee. For a taste of local culture, visit the charming town of Alton, known for its historic architecture and the picturesque Great River Road, where you can enjoy leisurely strolls alongside the Mississippi River. Food enthusiasts will relish the affordable dining options in the area, such as the iconic Pappy's Restaurant, where you can savor hearty meals without overspending. For accommodation, consider staying in the vibrant town of Edwardsville, which boasts several budget-friendly hotels that are not only convenient but also close to parks and local attractions. Enjoy the ease of exploring this friendly community, where you can spend your days discovering hidden gems and your evenings relaxing in comfortable, value-driven lodgings.

How can I get cheap hotels in Southwest Illinois?

Best tips to find a cheap hotel in Southwest Illinois

If you're looking to travel to Southwest Illinois on a budget, you'll be happy to know that you can find hotels for as low as $49. Of course, that price is affected by amenities, star rating, and even the time of year you visit. At most, hotel prices can be as high as $123. Staying a short amount of time in Southwest Illinois is an effective way to reduce hotel costs.
When you cut your vacation down to just a few days, you don't have to worry as much about hotel prices since you don't have that many nights to stay. For budget hotels in Southwest Illinois, 3 to 4 days should be all the nights you need. That's generally enough to enjoy the city's top attractions, though there's certainly enough to do to warrant a week-long trip.
When booking cheap hotel rooms in Southwest Illinois, it's typically best to book about 3 weeks in advance. Book further in advance than that and you could be paying too much for your room, as hotels will often overestimate future demand. However, if you wait too long, you might find that the hotel has been completely booked.
When you utilize search filters on Expedia, you'll be able to narrow down your results in a flash. These search filters cover a wide variety of factors you may be interested in when it comes to finding a cheap hotel in Southwest Illinois, including amenities such as Free Breakfast, 2-star rating, or proximity to local attractions. You can even set filters for price limits to ensure that all the displayed results are within your budget.