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West Yellowstone

$259+ Cheap flights from Illinois to West Yellowstone (WYS)

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — WYS
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Illinois to West Yellowstone

Keep the following information in mind while searching for Illinois to West Yellowstone flight deals. Data was last updated July 31, 2025.

Round-trip from

$259
(Delta)
From Illinois to West Yellowstone
Search Deals

Find flight deals from Illinois to West Yellowstone

Cheapest flights from Illinois to West Yellowstone
Explore the most affordable flight options available from Illinois to West Yellowstone. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:45 amORD - WYS
1 stop8h 05mDelta
Sun 8/243:25 pmWYS - ORD
1 stop5h 39mDelta
Deal found 7/31$259
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/137:35 amSTL - WYS
1 stop8h 15mDelta
Sat 8/163:25 pmWYS - STL
2 stops6h 57mDelta
Deal found 7/31$520
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/305:00 amORD - WYS
1 stop5h 37mUnited Airlines
Fri 9/51:51 pmWYS - ORD
2 stops22h 24mUnited Airlines
Deal found 7/30$548
This United Airlines deal was found by Cheapflights users on 7/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/138:54 amSTL - WYS
1 stop5h 26mUnited Airlines
Sat 8/1610:15 amWYS - STL
1 stop5h 16mUnited Airlines
Deal found 7/31$651
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/126:04 amMDW - WYS
2 stops9h 46mDelta
Sat 8/1611:25 amWYS - MDW
2 stops8h 47mDelta
Deal found 7/31$1,499

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to West Yellowstone that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Illinois to West Yellowstone that are best for you.

Fly from

Illinois

Fly to

West Yellowstone

Route

Depart

Return

Price

ChicagoWest Yellowstone

ORD - WYS

ORDWYS

Chicago O'Hare Intl

Wed 8/20

7:45 am-2:50 pm

1 stop8h 05m

West Yellowstone

Sun 8/24

3:25 pm-10:04 pm

1 stop5h 39m

$259

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Wed 8/13

7:35 am-2:50 pm

1 stop8h 15m

West Yellowstone

Sat 8/16

3:25 pm-11:22 pm

2 stops6h 57m

$520

ChicagoWest Yellowstone

ORD - WYS

ORDWYS

Chicago O'Hare Intl

Sat 8/30

5:00 am-9:37 am

1 stop5h 37m

West Yellowstone

Fri 9/5

1:51 pm-1:15 pm

2 stops22h 24m

$548

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Wed 8/13

8:54 am-1:20 pm

1 stop5h 26m

West Yellowstone

Sat 8/16

10:15 am-4:31 pm

1 stop5h 16m

$651

ChicagoWest Yellowstone

MDW - WYS

MDWWYS

Chicago Midway

Tue 8/12

6:04 am-2:50 pm

2 stops9h 46m

West Yellowstone

Sat 8/16

11:25 am-9:12 pm

2 stops8h 47m

$1,499

St. LouisWest Yellowstone

STL - WYS

STLWYS

Lambert-St Louis

Fri 10/10

1:40 pm-1:20 pm

1 stop24h 40m

$316

ChicagoWest Yellowstone

ORD - WYS

ORDWYS

Chicago O'Hare Intl

Fri 8/15

6:35 pm-9:37 am

1 stop16h 02m

$317

ChicagoWest Yellowstone

MDW - WYS

MDWWYS

Chicago Midway

Fri 8/15

6:04 am-2:50 pm

2 stops9h 46m

$490

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Illinois to West Yellowstone

Have a flexible travel schedule? Discover the best time to fly to West Yellowstone 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 West Yellowstone
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing West Yellowstone

Get insights into the airlines that provide service to West Yellowstone. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to West Yellowstone. Reviews last updated July 31, 2025.
Read through reviews of airlines operating flights from Illinois to West Yellowstone, such as Delta and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Illinois to West Yellowstone. 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 West Yellowstone from Illinois?

    Most people fly into West Yellowstone (WYS) if they book a flight to West Yellowstone from Illinois. Yellowstone is conveniently located just 1.9 mi from West Yellowstone’s city center.

  • What are the most popular routes from Illinois to West Yellowstone?

    When deciding which route to take from Illinois to West Yellowstone consider Chicago O'Hare Intl - West Yellowstone, Chicago Midway - West Yellowstone or Lambert-St Louis - West Yellowstone as they are the most popular.

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

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

  • How can I find direct flights from Illinois to West Yellowstone?

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

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

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

See more FAQs

Traveling to a place near West Yellowstone?

Book flights to West Yellowstone if you plan to visit one of these locations
Island Park

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Alternative routes for Illinois to West Yellowstone

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Top airline flying from Illinois to West Yellowstone

Discover the top airline that operate flights from Illinois to West Yellowstone. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$410Average$603FlexibilityNo cancel feeOn-time69%

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