$46+ Cheap flights from Wyoming to Illinois
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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
JAC — ORD
Apr 15 — Apr 221
Round-trip
1 adult, Economy
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Cheapest flights from Wyoming to IllinoisExplore the most affordable flight options available from Wyoming to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.
Explore the most affordable flight options available from Wyoming to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.
This Super.com deal was found by Cheapflights users on 3/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Mon 4/68:19 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/11![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 3/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Fri 4/108:16 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/14![Frontier logo]()
$106
This Frontier deal was found by Cheapflights users on 3/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Wed 4/88:16 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/14![Frontier logo]()
$112
This Frontier deal was found by Cheapflights users on 3/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:09 pm
DEN
- STL
Nonstop2h 12m
Frontier
Mon 5/48:17 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/13![Frontier logo]()
$120
This Cheapflightsfares deal was found by Cheapflights users on 3/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:29 pm
DEN
- STL
1 stop21h 31m
Frontier
Sat 5/98:08 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/11![Frontier logo]()
$122
This Super.com deal was found by Cheapflights users on 3/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:09 pm
DEN
- STL
Nonstop2h 12m
Frontier
Mon 4/278:17 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/12![Frontier logo]()
$123
This Booking.com deal was found by Cheapflights users on 3/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/511:54 pm
DEN
- STL
1 stop8h 01m
Frontier
Sat 5/98:08 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/11![Frontier logo]()
$124
This Cheapflightsfares deal was found by Cheapflights users on 3/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:00 pm
DEN
- STL
Nonstop2h 12m
Frontier
Sun 5/109:55 pm
STL
- DEN
1 stop7h 04m
Frontier
Deal found 3/11![Frontier logo]()
$125
This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1010:40 pm
DEN
- STL
1 stop12h 41m
Frontier
Mon 4/138:19 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/13![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 3/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/14:15 pm
DEN
- STL
Nonstop2h 08m
Frontier
Wed 6/38:08 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/16![Frontier logo]()
$130
This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/84:15 pm
DEN
- STL
Nonstop2h 08m
Frontier
Mon 5/183:02 pm
STL
- DEN
1 stop6h 50m
Frontier
Deal found 3/13![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:17 pm
SLC
- STL
1 stop11h 31m
Frontier
Mon 4/138:19 pm
STL
- SLC
1 stop15h 55m
Frontier
Deal found 3/13![Frontier logo]()
$160
Best flights from Wyoming to IllinoisDiscover carefully curated flight deals from Wyoming to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 16, 2026.
Discover carefully curated flight deals from Wyoming to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 16, 2026.
This American Airlines deal was found by Cheapflights users on 3/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:19 am
DEN
- PIA
1 stop5h 33m
American Airlines
Sat 5/96:00 am
PIA
- DEN
1 stop4h 57m
American Airlines
Deal found 3/11![American Airlines logo]()
$189
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/96:05 am
DEN
- MDW
1 stop4h 55m
Southwest
Wed 6/1010:15 am
MDW
- DEN
1 stop4h 10m
Southwest
Deal found 3/11![Southwest logo]()
$200
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Thu 4/95:45 pm
DEN
- STL
Nonstop2h 09m
United Airlines
Thu 4/166:05 pm
STL
- DEN
Nonstop2h 34m
United Airlines
Deal found 3/11![United Airlines logo]()
$220
This Delta deal was found by Cheapflights users on 3/11. 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 5/196:05 am
DEN
- ORD
1 stop5h 56m
Delta
Tue 5/198:05 pm
ORD
- DEN
1 stop4h 36m
Delta
Deal found 3/11![Delta logo]()
$225
This Frontier deal was found by Cheapflights users on 3/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2710:59 pm
SLC
- STL
1 stop11h 20m
Frontier
Tue 3/3112:14 pm
STL
- SLC
1 stop8h 15m
Frontier
Deal found 3/11![Frontier logo]()
$245
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:20 am
DEN
- MDW
Nonstop2h 25m
Southwest
Mon 5/45:15 pm
MDW
- DEN
Nonstop2h 40m
Southwest
Deal found 3/11![Southwest logo]()
$201
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:35 am
DEN
- MDW
Nonstop2h 20m
Southwest
Thu 4/166:00 am
MDW
- DEN
Nonstop2h 40m
Southwest
Deal found 3/11![Southwest logo]()
$203
This Alaska Airlines deal was found by Cheapflights users on 3/15. 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.
Fri 4/177:03 am
SLC
- STL
1 stop7h 21m
Alaska Airlines
Sat 4/187:00 am
STL
- SLC
1 stop9h 14m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 3/11. 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.
Sat 6/206:45 am
DEN
- ORD
1 stop4h 54m
Delta
Mon 7/203:50 pm
ORD
- DEN
1 stop7h 39m
Delta
Deal found 3/11![Delta logo]()
$240
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/112:45 pm
DEN
- MDW
1 stop5h 20m
Southwest
Mon 4/136:00 am
MDW
- DEN
Nonstop2h 40m
Southwest
Deal found 3/12![Southwest logo]()
$211
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/185:55 pm
DEN
- PIA
Nonstop2h 24m
United Airlines
Mon 4/207:43 pm
PIA
- DEN
1 stop5h 16m
United Airlines
Deal found 3/12![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 3/11. 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.
Sat 6/276:45 am
DEN
- ORD
1 stop4h 54m
Delta
Sat 7/47:10 am
ORD
- DEN
1 stop8h 57m
Delta
Deal found 3/11![Delta logo]()
$250
This United Airlines deal was found by Cheapflights users on 3/11. 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 5/67:32 am
DEN
- PIA
1 stop4h 25m
United Airlines
Sat 5/98:50 am
PIA
- DEN
Nonstop2h 44m
United Airlines
Deal found 3/11![United Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 3/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:20 pm
DEN
- MDW
Nonstop2h 20m
Southwest
Thu 5/79:35 pm
MDW
- DEN
Nonstop2h 40m
Southwest
Deal found 3/16![Southwest logo]()
$221
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 4/105:55 pm
DEN
- PIA
Nonstop2h 24m
United Airlines
Mon 4/135:35 pm
PIA
- DEN
1 stop7h 24m
United Airlines
Deal found 3/12![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 3/16. 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 4/2212:35 am
DEN
- MDW
1 stop7h 12m
Delta
Mon 4/275:21 pm
MDW
- DEN
1 stop8h 15m
Delta
Deal found 3/16![Delta logo]()
$261
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/135:15 am
DEN
- MDW
Nonstop2h 20m
Southwest
Mon 6/159:25 pm
MDW
- DEN
Nonstop2h 40m
Southwest
Deal found 3/11![Southwest logo]()
$230
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Fri 4/105:55 pm
DEN
- PIA
Nonstop2h 24m
United Airlines
Fri 4/175:35 pm
PIA
- DEN
1 stop5h 35m
United Airlines
Deal found 3/11![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 3/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/68:10 am
DEN
- STL
1 stop8h 16m
Delta
Wed 5/205:36 pm
STL
- DEN
1 stop7h 05m
Delta
Deal found 3/13![Delta logo]()
$261
This American Airlines deal was found by Cheapflights users on 3/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/212:28 pm
JAC
- ORD
1 stop10h 19m
American Airlines
Tue 4/76:30 am
ORD
- JAC
1 stop7h 11m
American Airlines
Deal found 3/11![American Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:45 pm
DEN
- STL
1 stop4h 55m
Southwest
Sat 4/255:40 am
STL
- DEN
2 stops7h 10m
Southwest
Deal found 3/12![Southwest logo]()
$234
This Delta deal was found by Cheapflights users on 3/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/44:27 pm
DEN
- STL
1 stop6h 31m
Delta
Wed 4/86:59 pm
STL
- DEN
1 stop6h 10m
Delta
Deal found 3/14![Delta logo]()
$261
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Fri 6/199:05 pm
DEN
- ORD
Nonstop2h 39m
United Airlines
Sun 6/215:00 am
ORD
- DEN
Nonstop2h 41m
United Airlines
Deal found 3/15![United Airlines logo]()
$265
This American Airlines deal was found by Cheapflights users on 3/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:05 pm
SLC
- MLI
1 stop5h 49m
American Airlines
Sat 5/234:42 pm
MLI
- SLC
1 stop8h 54m
American Airlines
Deal found 3/14![American Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:45 am
DEN
- ORD
1 stop6h 05m
Southwest
Thu 6/112:40 pm
ORD
- DEN
1 stop6h 50m
Southwest
Deal found 3/11![Southwest logo]()
$235
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Fri 6/126:00 pm
DEN
- ORD
Nonstop2h 39m
United Airlines
Sun 6/215:00 am
ORD
- DEN
Nonstop2h 41m
United Airlines
Deal found 3/15![United Airlines logo]()
$265
This Southwest deal was found by Cheapflights users on 3/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:30 am
DEN
- MDW
1 stop6h 40m
Southwest
Sat 4/182:15 pm
MDW
- DEN
1 stop5h 45m
Southwest
Deal found 3/14![Southwest logo]()
$235
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 4/176:00 am
DEN
- PIA
1 stop5h 36m
United Airlines
Mon 4/205:35 pm
PIA
- DEN
1 stop5h 35m
United Airlines
Deal found 3/12![United Airlines logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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.
Wed 7/157:34 am
SLC
- ORD
1 stop10h 26m
Alaska Airlines
Sun 7/197:20 am
ORD
- SLC
1 stop7h 39m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$496
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:10 pm
DEN
- ORD
2 stops15h 40m
Southwest
Mon 4/202:40 pm
ORD
- DEN
2 stops10h 05m
Southwest
Deal found 3/12![Southwest logo]()
$237
Last-minute flights from Wyoming to IllinoisDiscover last-minute flight deals from Wyoming to Illinois. Data last updated March 16, 2026 and is based on user searches.
Discover last-minute flight deals from Wyoming to Illinois. Data last updated March 16, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/319:25 am
DEN
- STL
1 stop12h 54m
Frontier
Sat 4/48:16 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/14![Frontier logo]()
$140
This Super.com deal was found by Cheapflights users on 3/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Mon 4/68:19 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/11![Frontier logo]()
$105
This Cheapflightsfares deal was found by Cheapflights users on 3/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/66:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Wed 4/88:16 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/14![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/71:35 pm
SLC
- STL
1 stop19h 13m
Frontier
Wed 4/88:16 pm
STL
- SLC
1 stop12h 49m
Frontier
Deal found 3/11![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:17 pm
SLC
- STL
1 stop11h 31m
Frontier
Mon 4/138:19 pm
STL
- SLC
1 stop15h 55m
Frontier
Deal found 3/11![Frontier logo]()
$153
This Frontier deal was found by Cheapflights users on 3/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Fri 4/108:16 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/14![Frontier logo]()
$106
This Frontier deal was found by Cheapflights users on 3/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Wed 4/88:16 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/14![Frontier logo]()
$112
This Cheapflightsfares deal was found by Cheapflights users on 3/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1010:40 pm
DEN
- STL
1 stop12h 41m
Frontier
Mon 4/138:19 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/12![Frontier logo]()
$129
This Expedia deal was found by Cheapflights users on 3/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:53 pm
DEN
- STL
1 stop28h 26m
Frontier
Sat 4/188:17 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/14![Frontier logo]()
$134
This Cheapflightsfares deal was found by Cheapflights users on 3/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:20 pm
DEN
- STL
Nonstop2h 12m
Frontier
Sat 4/258:17 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/11![Frontier logo]()
$136
This Super.com deal was found by Cheapflights users on 3/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:09 pm
DEN
- STL
Nonstop2h 12m
Frontier
Mon 4/278:17 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/12![Frontier logo]()
$123
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/274:20 pm
DEN
- STL
Nonstop2h 12m
Frontier
Thu 4/308:06 pm
STL
- DEN
Nonstop2h 33m
Frontier
Deal found 3/15![Frontier logo]()
$135
One-way flights from Wyoming to IllinoisSearch for one-way flight options from Wyoming to Illinois. Find affordable one-way fares based on user searches. Data last updated March 16, 2026.
Search for one-way flight options from Wyoming to Illinois. Find affordable one-way fares based on user searches. Data last updated March 16, 2026.
This Frontier deal was found by Cheapflights users on 3/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/114:15 pm
DEN
- STL
Nonstop2h 08m
Frontier
Deal found 3/13![Frontier logo]()
$46
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/46:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Deal found 3/16![Frontier logo]()
$49
This Frontier deal was found by Cheapflights users on 3/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Deal found 3/16![Frontier logo]()
$50
This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/84:00 pm
DEN
- STL
Nonstop2h 12m
Frontier
Deal found 3/13![Frontier logo]()
$54
This Super.com deal was found by Cheapflights users on 3/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:15 pm
DEN
- STL
Nonstop2h 08m
Frontier
Deal found 3/14![Frontier logo]()
$55
This Frontier deal was found by Cheapflights users on 3/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:40 am
DEN
- STL
Nonstop2h 08m
Frontier
Deal found 3/12![Frontier logo]()
$62
This Frontier deal was found by Cheapflights users on 3/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/104:15 pm
DEN
- STL
Nonstop2h 08m
Frontier
Deal found 3/13![Frontier logo]()
$64
This Super.com deal was found by Cheapflights users on 3/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:09 pm
DEN
- STL
Nonstop2h 12m
Frontier
Deal found 3/15![Frontier logo]()
$65
This Super.com deal was found by Cheapflights users on 3/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:09 pm
DEN
- STL
Nonstop2h 12m
Frontier
Deal found 3/16![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:17 pm
SLC
- STL
1 stop11h 31m
Frontier
Deal found 3/12![Frontier logo]()
$79
This Cheapflightsfares deal was found by Cheapflights users on 3/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:45 am
DEN
- ORD
Nonstop2h 34m
Frontier
Deal found 3/11![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 3/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/113:20 pm
DEN
- MDW
1 stop8h 17m
Frontier
Deal found 3/12![Frontier logo]()
$89
Find flight deals from Wyoming to Illinois
Keep the following information in mind while searching for Wyoming to Illinois flight deals. Data was last updated March 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $105 (Super.com) |
One-way from | $46 (Frontier) |
Popular in | January |
Cheapest in | September |
Average price | $530 |
Good round-trip deal | $355 or less |
Good one-way deal | $302 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Wyoming to Illinois 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 March 16, 2026.
Use the filters below to find and compare flights from Wyoming to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverPeoria
DEN - PIA
DENPIA
Denver Intl
Wed 5/6
6:19 am-12:52 pm
1 stop5h 33m
Greater Peoria
Sat 5/9
6:00 am-9:57 am
1 stop4h 57m
$189
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Tue 6/9
6:05 am-12:00 pm
1 stop4h 55m
Chicago Midway
Wed 6/10
10:15 am-1:25 pm
1 stop4h 10m
$200
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Sat 5/2
6:20 am-9:45 am
Nonstop2h 25m
Chicago Midway
Mon 5/4
5:15 pm-6:55 pm
Nonstop2h 40m
$201
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Tue 4/14
8:35 am-11:55 am
Nonstop2h 20m
Chicago Midway
Thu 4/16
6:00 am-7:40 am
Nonstop2h 40m
$203
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Sat 4/11
2:45 pm-9:05 pm
1 stop5h 20m
Chicago Midway
Mon 4/13
6:00 am-7:40 am
Nonstop2h 40m
$211
Quickest round-trip
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Thu 4/9
5:45 pm-8:54 pm
Nonstop2h 09m
Lambert-St Louis
Thu 4/16
6:05 pm-7:39 pm
Nonstop2h 34m
$220
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Thu 4/30
8:20 pm-11:40 pm
Nonstop2h 20m
Chicago Midway
Thu 5/7
9:35 pm-11:15 pm
Nonstop2h 40m
$221
DenverChicago
DEN - ORD
DENORD
Denver Intl
Tue 5/19
6:05 am-1:01 pm
1 stop5h 56m
Chicago O'Hare Intl
Tue 5/19
8:05 pm-11:41 pm
1 stop4h 36m
$225
DenverChicago
DEN - MDW
DENMDW
Denver Intl
Sat 6/13
5:15 am-8:35 am
Nonstop2h 20m
Chicago Midway
Mon 6/15
9:25 pm-11:05 pm
Nonstop2h 40m
$230
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Mon 4/20
4:45 pm-10:40 pm
1 stop4h 55m
Lambert-St Louis
Sat 4/25
5:40 am-11:50 am
2 stops7h 10m
$234
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Wyoming to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Wyoming with our price prediction graph.
DEN-STL
SLC-STL
DEN-PIA
DEN-MDW
DEN-ORD
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 Wyoming to Illinois
USWY-USIL
DEN-STL
SLC-STL
DEN-PIA
DEN-MDW
What is the cheapest month to book a flight from Wyoming to Illinois?
Currently, September is the cheapest month in which you can book a flight from Wyoming to Illinois (average of $197). Flying from Wyoming to Illinois in July is currently the most expensive (average of $447). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from WY to IL?
Find hourly flight availability from Wyoming to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 16, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Wyoming to Illinois as you normally would.
Weekly flight availability from Wyoming to Illinois
Explore weekly flight availability from Wyoming to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 16, 2026.
The most flights from USWY to USIL are scheduled on a Saturday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated March 16, 2026.
Read reviews from past customers who have flown United Airlines and American Airlines from Wyoming to Illinois. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.6
Overall
7.4
Crew
8.1
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Food
6.6
Overall
7.4
Crew
8.1
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Food
6.6
Overall
7.4
Crew
8.1
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
8.0
ExcellentAnonymous,Oct 2025
YUL - ORD
Related info for your journey
Find useful and relevant information for your journey from Wyoming to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Wyoming to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Wyoming to Illinois by cabin class
Find flights from Wyoming to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Wyoming and Illinois flights
Browse other Wyoming and Illinois flight options. Last updated on March 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Wyoming after your stay in Illinois
Wyoming to Illinois flights
Consider these flights traveling from Wyoming to Illinois.
Top 2 airlines flying from Wyoming to Illinois
Discover the top 2 airlines that operate flights from Wyoming to Illinois. 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 March 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$191 | Average$370 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$281 | Average$385 | FlexibilityNo cancel fee | On-time69% |