$459+ Cheap flights from Illinois to Yellowstone National Park
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — WYS
Jan 20 — Jan 271
1 adult, Economy
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Best flights from Illinois to Yellowstone National ParkDiscover carefully curated flight deals from Illinois to Yellowstone National Park that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 21, 2025.
Discover carefully curated flight deals from Illinois to Yellowstone National Park that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 21, 2025.
This United Airlines deal was found by Cheapflights users on 12/19. 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 6/179:45 pmORD - WYS
1 stop16h 35mUnited Airlines
Wed 6/242:02 pmWYS - ORD
1 stop18h 41mUnited Airlines
Deal found 12/19![United Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 12/20. 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.
Mon 6/15:15 amORD - WYS
1 stop9h 05mUnited Airlines
Mon 6/82:02 pmWYS - ORD
1 stop7h 23mUnited Airlines
Deal found 12/20![United Airlines logo]()
$565
This Delta deal was found by Cheapflights users on 12/19. 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 6/176:00 amORD - WYS
2 stops7h 21mDelta
Wed 6/241:09 pmWYS - ORD
2 stops9h 46mDelta
Deal found 12/19![Delta logo]()
$1,139
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Mon 5/188:24 pmORD - WYS
2 stops17h 56mUnited Airlines
Fri 5/225:45 pmWYS - ORD
2 stops13h 14mUnited Airlines
Deal found 12/18![United Airlines logo]()
$694
Find flight deals from Illinois to Yellowstone National Park
Keep the following information in mind while searching for Illinois to Yellowstone National Park flight deals. Data was last updated December 21, 2025.
Round-trip from | $547 (United Airlines) |
|---|---|
One-way from | $459 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Yellowstone National Park 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 December 21, 2025.
Use the filters below to find and compare flights from Illinois to Yellowstone National Park that are best for you.
Fly from
Illinois
Fly to
Yellowstone National Park
Route
Depart
Return
Price
ChicagoWest Yellowstone
ORD - WYS
ORDWYS
Chicago O'Hare Intl
Wed 6/17
9:45 pm-1:20 pm
1 stop16h 35m
West Yellowstone
Wed 6/24
2:02 pm-9:43 am
1 stop18h 41m
$547
ChicagoWest Yellowstone
ORD - WYS
ORDWYS
Chicago O'Hare Intl
Mon 6/1
5:15 am-1:20 pm
1 stop9h 05m
West Yellowstone
Mon 6/8
2:02 pm-10:25 pm
1 stop7h 23m
$565
ChicagoWest Yellowstone
ORD - WYS
ORDWYS
Chicago O'Hare Intl
Mon 5/18
8:24 pm-1:20 pm
2 stops17h 56m
West Yellowstone
Fri 5/22
5:45 pm-7:59 am
2 stops13h 14m
$694
ChicagoWest Yellowstone
ORD - WYS
ORDWYS
Chicago O'Hare Intl
Wed 6/17
6:00 am-12:21 pm
2 stops7h 21m
West Yellowstone
Wed 6/24
1:09 pm-11:55 pm
2 stops9h 46m
$1,139
ChicagoWest Yellowstone
ORD - WYS
ORDWYS
Chicago O'Hare Intl
Sun 5/17
7:15 am-1:20 pm
1 stop7h 05m
$459
Best time to book a flight from Illinois to Yellowstone National Park
Have a flexible travel schedule? Discover the best time to fly to Yellowstone National Park 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 Yellowstone National Park
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Related info for your journey
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Alternative routes for Illinois to Yellowstone National Park
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Illinois to Yellowstone National Park
Discover the top airline that operate flights from Illinois to Yellowstone National Park. 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 December 21, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$410 | Average$710 | FlexibilityNo cancel fee | On-time69% |