$64+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
JAC — ORD
Aug 27 — Sep 31
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 July 28, 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 July 28, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 9/102:16 pm
DEN
- PIA
Nonstop2h 03m
Allegiant Air
Sun 9/1310:07 am
PIA
- DEN
Nonstop2h 20m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Mon 8/316:30 am
DEN
- STL
1 stop9h 52m
Frontier
Sun 9/67:58 pm
STL
- DEN
Nonstop2h 27m
Frontier
Deal found 7/23![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 9/36:30 am
DEN
- STL
1 stop9h 52m
Frontier
Sun 9/67:58 pm
STL
- DEN
Nonstop2h 27m
Frontier
Deal found 7/23![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Fri 9/114:12 pm
DEN
- STL
Nonstop2h 03m
Frontier
Sun 9/1310:35 am
STL
- DEN
1 stop12h 58m
Frontier
Deal found 7/23![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/139:06 pm
DEN
- STL
2 stops34h 51m
Frontier
Sat 8/158:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 7/23![Frontier logo]()
$169
This Kissandfly.com deal was found by Cheapflights users on 7/27. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:55 pm
DEN
- ORD
Nonstop2h 28m
Frontier
Thu 9/1710:30 pm
ORD
- DEN
Nonstop2h 47m
Frontier
Deal found 7/27![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 10/103:32 pm
DEN
- STL
2 stops17h 08m
Frontier
Tue 10/138:10 pm
STL
- DEN
Nonstop2h 39m
Frontier
Deal found 7/23![Frontier logo]()
$170
This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 8/279:55 am
DEN
- ORD
Nonstop2h 41m
Frontier
Sat 8/292:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Deal found 7/26![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Wed 9/211:59 pm
DEN
- STL
1 stop16h 23m
Frontier
Mon 9/76:17 pm
STL
- DEN
1 stop16h 02m
Frontier
Deal found 7/23![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Wed 10/148:50 am
DEN
- ORD
1 stop11h 44m
Frontier
Tue 10/202:46 pm
ORD
- DEN
1 stop10h 07m
Frontier
Deal found 7/24![Frontier logo]()
$172
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/261:27 pm
DEN
- STL
Nonstop2h 07m
United Airlines
Mon 8/319:00 am
STL
- DEN
Nonstop2h 31m
United Airlines
Deal found 7/27![United Airlines logo]()
$172
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 8/219:55 am
DEN
- ORD
Nonstop2h 41m
Frontier
Mon 8/242:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Deal found 7/25![Frontier logo]()
$173
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 July 28, 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 July 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/208:31 am
DEN
- RFD
1 stop5h 38m
Multiple Airlines
Sun 8/233:59 pm
RFD
- DEN
1 stop24h 02m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$175
This United Airlines deal was found by Cheapflights users on 7/23. 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 8/315:35 pm
DEN
- STL
Nonstop2h 11m
United Airlines
Sat 9/54:40 pm
STL
- DEN
Nonstop2h 30m
United Airlines
Deal found 7/23![United Airlines logo]()
$187
This Southwest deal was found by Cheapflights users on 7/25. 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 8/227:35 am
DEN
- STL
Nonstop2h 00m
Southwest
Sat 8/298:55 am
STL
- DEN
Nonstop2h 15m
Southwest
Deal found 7/25![Southwest logo]()
$187
This Delta deal was found by Cheapflights users on 7/23. 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 9/56:05 am
DEN
- ORD
1 stop6h 45m
Delta
Sat 9/1211:17 am
ORD
- DEN
1 stop7h 04m
Delta
Deal found 7/23![Delta logo]()
$225
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Fri 8/285:44 pm
DEN
- MLI
1 stop5h 24m
American Airlines
Wed 9/211:43 am
MLI
- DEN
1 stop6h 10m
American Airlines
Deal found 7/27![American Airlines logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 8/242:34 pm
SLC
- ORD
1 stop8h 25m
Alaska Airlines
Tue 9/16:54 pm
ORD
- SLC
1 stop18h 20m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$305
This United Airlines deal was found by Cheapflights users on 7/24. 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 9/175:32 pm
DEN
- STL
Nonstop2h 06m
United Airlines
Sat 9/191:36 pm
STL
- DEN
Nonstop2h 24m
United Airlines
Deal found 7/24![United Airlines logo]()
$187
This Southwest deal was found by Cheapflights users on 7/26. 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 10/15:50 am
DEN
- STL
Nonstop2h 00m
Southwest
Thu 10/19:50 pm
STL
- DEN
Nonstop2h 20m
Southwest
Deal found 7/26![Southwest logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 9/107:30 am
DEN
- RFD
1 stop12h 09m
Multiple Airlines
Sun 9/133:53 pm
RFD
- DEN
1 stop22h 40m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$204
This Southwest deal was found by Cheapflights users on 7/24. 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 9/37:00 am
DEN
- STL
Nonstop2h 00m
Southwest
Sun 9/61:25 pm
STL
- DEN
Nonstop2h 15m
Southwest
Deal found 7/24![Southwest logo]()
$192
This Delta deal was found by Cheapflights users on 7/23. 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 9/158:45 am
DEN
- ORD
1 stop7h 14m
Delta
Wed 9/165:10 pm
ORD
- DEN
1 stop5h 22m
Delta
Deal found 7/23![Delta logo]()
$225
This United Airlines deal was found by Cheapflights users on 7/23. 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 10/16:00 am
DEN
- ORD
Nonstop2h 43m
United Airlines
Mon 10/57:50 pm
ORD
- DEN
Nonstop2h 54m
United Airlines
Deal found 7/23![United Airlines logo]()
$205
This Southwest deal was found by Cheapflights users on 7/27. 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 9/59:05 am
DEN
- STL
2 stops8h 25m
Southwest
Tue 9/82:50 pm
STL
- DEN
1 stop3h 30m
Southwest
Deal found 7/27![Southwest logo]()
$193
This Delta deal was found by Cheapflights users on 7/23. 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 9/156:30 am
DEN
- MDW
1 stop5h 09m
Delta
Wed 9/167:13 pm
MDW
- DEN
1 stop5h 22m
Delta
Deal found 7/23![Delta logo]()
$225
This United Airlines deal was found by Cheapflights users on 7/27. 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 10/128:29 pm
DEN
- ORD
Nonstop2h 30m
United Airlines
Sat 10/175:00 am
ORD
- DEN
Nonstop2h 39m
United Airlines
Deal found 7/27![United Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 10/156:30 am
DEN
- RFD
2 stops12h 43m
Multiple Airlines
Sun 10/181:12 pm
RFD
- DEN
1 stop24h 32m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$243
This Southwest deal was found by Cheapflights users on 7/23. 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 8/316:00 am
DEN
- STL
1 stop6h 15m
Southwest
Sat 9/53:00 pm
STL
- DEN
1 stop5h 45m
Southwest
Deal found 7/23![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 7/27. 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 10/136:10 am
DEN
- ORD
1 stop5h 49m
Delta
Sat 10/1711:12 am
ORD
- DEN
1 stop6h 56m
Delta
Deal found 7/27![Delta logo]()
$233
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Mon 8/245:44 pm
DEN
- MLI
1 stop5h 24m
American Airlines
Mon 8/316:45 pm
MLI
- DEN
1 stop6h 14m
American Airlines
Deal found 7/27![American Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/2210:47 pm
DEN
- RFD
1 stop13h 32m
Multiple Airlines
Mon 9/288:44 pm
RFD
- DEN
1 stop13h 59m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$252
This Southwest deal was found by Cheapflights users on 7/27. 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 8/208:25 pm
DEN
- MDW
Nonstop2h 20m
Southwest
Tue 8/252:15 pm
MDW
- DEN
Nonstop2h 30m
Southwest
Deal found 7/27![Southwest logo]()
$213
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/196:00 am
DEN
- ORD
Nonstop2h 43m
United Airlines
Sun 9/205:00 am
ORD
- DEN
Nonstop2h 39m
United Airlines
Deal found 7/27![United Airlines logo]()
$244
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Tue 8/252:34 pm
SLC
- STL
2 stops25h 36m
Alaska Airlines
Tue 9/16:35 am
STL
- SLC
2 stops13h 21m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 9/1710:47 pm
DEN
- RFD
1 stop18h 24m
Multiple Airlines
Sun 9/209:29 pm
RFD
- DEN
1 stop7h 23m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 7/25. 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 11/256:05 am
DEN
- ORD
1 stop6h 54m
Delta
Tue 12/15:32 pm
ORD
- DEN
1 stop7h 07m
Delta
Deal found 7/25![Delta logo]()
$259
This Southwest deal was found by Cheapflights users on 7/27. 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 10/128:55 pm
DEN
- MDW
Nonstop2h 20m
Southwest
Sat 10/176:35 am
MDW
- DEN
1 stop5h 00m
Southwest
Deal found 7/27![Southwest logo]()
$219
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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 10/77:53 am
SLC
- STL
2 stops15h 06m
Alaska Airlines
Tue 10/137:02 am
STL
- SLC
2 stops12h 57m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 10/226:23 am
DEN
- RFD
1 stop12h 07m
Multiple Airlines
Sun 10/258:53 pm
RFD
- DEN
1 stop7h 59m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$261
This Delta deal was found by Cheapflights users on 7/27. 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.
Fri 9/44:33 pm
DEN
- STL
1 stop6h 25m
Delta
Sat 9/511:13 am
STL
- DEN
1 stop5h 10m
Delta
Deal found 7/27![Delta logo]()
$261
This Southwest deal was found by Cheapflights users on 7/25. 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 8/178:25 pm
DEN
- MDW
Nonstop2h 20m
Southwest
Tue 8/1811:10 am
MDW
- DEN
1 stop4h 50m
Southwest
Deal found 7/25![Southwest logo]()
$219
Last-minute flights from Wyoming to IllinoisDiscover last-minute flight deals from Wyoming to Illinois. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from Wyoming to Illinois. Data last updated July 28, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/22. 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 8/104:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Tue 8/118:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 7/22![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/139:06 pm
DEN
- STL
2 stops34h 51m
Frontier
Sat 8/158:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 7/23![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/135:05 pm
DEN
- ORD
Nonstop2h 47m
Frontier
Tue 8/182:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Deal found 7/24![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/187:00 am
DEN
- ORD
1 stop7h 59m
Frontier
Mon 8/242:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Deal found 7/23![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/208:31 am
DEN
- RFD
1 stop5h 38m
Multiple Airlines
Sun 8/233:59 pm
RFD
- DEN
1 stop24h 02m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 8/219:55 am
DEN
- ORD
Nonstop2h 41m
Frontier
Mon 8/242:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Deal found 7/25![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Fri 8/216:30 am
DEN
- STL
1 stop9h 52m
Frontier
Fri 8/286:17 pm
STL
- DEN
1 stop16h 02m
Frontier
Deal found 7/22![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Wed 8/267:00 am
DEN
- ORD
1 stop7h 59m
Frontier
Mon 8/312:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Deal found 7/23![Frontier logo]()
$174
This Cheapflightsfares deal was found by Cheapflights users on 7/26. 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 8/279:55 am
DEN
- ORD
Nonstop2h 41m
Frontier
Sat 8/292:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Deal found 7/26![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/274:00 pm
DEN
- STL
Nonstop2h 13m
Frontier
Sun 8/306:17 pm
STL
- DEN
1 stop20h 44m
Frontier
Deal found 7/27![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Mon 8/316:30 am
DEN
- STL
1 stop9h 52m
Frontier
Sun 9/67:58 pm
STL
- DEN
Nonstop2h 27m
Frontier
Deal found 7/23![Frontier logo]()
$166
This Frontier deal was found by Cheapflights users on 7/23. 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 8/314:00 pm
DEN
- STL
Nonstop2h 13m
Frontier
Mon 9/77:58 pm
STL
- DEN
Nonstop2h 27m
Frontier
Deal found 7/23![Frontier logo]()
$167
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 July 28, 2026.
Search for one-way flight options from Wyoming to Illinois. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Frontier deal was found by Cheapflights users on 7/24. 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.
Thu 9/244:12 pm
DEN
- STL
Nonstop2h 03m
Frontier
Deal found 7/24![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 10/1510:20 am
DEN
- PIA
Nonstop1h 59m
Allegiant Air
Deal found 7/23![Allegiant Air logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Wed 8/1911:59 pm
DEN
- STL
1 stop16h 23m
Frontier
Deal found 7/22![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Wed 9/166:30 am
DEN
- STL
1 stop26h 10m
Frontier
Deal found 7/23![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 9/196:30 am
DEN
- STL
1 stop26h 10m
Frontier
Deal found 7/23![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 10/297:25 am
SLC
- STL
1 stop10h 50m
Frontier
Deal found 7/26![Frontier logo]()
$84
This Trip.com deal was found by Cheapflights users on 7/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:59 pm
DEN
- STL
1 stop16h 23m
Frontier
Deal found 7/26![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Wed 10/289:28 pm
SLC
- STL
1 stop20h 47m
Frontier
Deal found 7/23![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 11/57:25 am
SLC
- STL
1 stop10h 50m
Frontier
Deal found 7/26![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 10/247:25 am
SLC
- STL
1 stop10h 50m
Frontier
Deal found 7/25![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Sun 11/156:45 pm
SLC
- STL
1 stop23h 30m
Frontier
Deal found 7/23![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Wed 10/2111:48 pm
DEN
- STL
1 stop8h 52m
Frontier
Deal found 7/25![Frontier logo]()
$92
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 July 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $125 (Kiwi.com) |
One-way from | $64 (Frontier) |
Popular in | April |
Cheapest in | September |
Average price | $439 |
Good round-trip deal | $538 or less |
Good one-way deal | $291 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 July 28, 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
DenverChicago
DEN - RFD
DENRFD
Denver Intl
Thu 8/20
8:31 am-3:09 pm
1 stop5h 38m
Chicago Greater Rockford
Sun 8/23
3:59 pm-3:01 pm
1 stop24h 02m
$175
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Mon 8/31
5:35 pm-8:46 pm
Nonstop2h 11m
Lambert-St Louis
Sat 9/5
4:40 pm-6:10 pm
Nonstop2h 30m
$187
Quickest round-trip
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Sat 8/22
7:35 am-10:35 am
Nonstop2h 00m
Lambert-St Louis
Sat 8/29
8:55 am-10:10 am
Nonstop2h 15m
$187
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Thu 9/17
5:32 pm-8:38 pm
Nonstop2h 06m
Lambert-St Louis
Sat 9/19
1:36 pm-3:00 pm
Nonstop2h 24m
$187
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Thu 10/1
5:50 am-8:50 am
Nonstop2h 00m
Lambert-St Louis
Thu 10/1
9:50 pm-11:10 pm
Nonstop2h 20m
$187
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Thu 9/3
7:00 am-10:00 am
Nonstop2h 00m
Lambert-St Louis
Sun 9/6
1:25 pm-2:40 pm
Nonstop2h 15m
$192
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Sat 9/5
9:05 am-6:30 pm
2 stops8h 25m
Lambert-St Louis
Tue 9/8
2:50 pm-5:20 pm
1 stop3h 30m
$193
DenverChicago
DEN - RFD
DENRFD
Denver Intl
Thu 9/10
7:30 am-8:39 pm
1 stop12h 09m
Chicago Greater Rockford
Sun 9/13
3:53 pm-1:33 pm
1 stop22h 40m
$204
DenverChicago
DEN - ORD
DENORD
Denver Intl
Thu 10/1
6:00 am-9:43 am
Nonstop2h 43m
Chicago O'Hare Intl
Mon 10/5
7:50 pm-9:44 pm
Nonstop2h 54m
$205
DenverSt. Louis
DEN - STL
DENSTL
Denver Intl
Mon 8/31
6:00 am-1:15 pm
1 stop6h 15m
Lambert-St Louis
Sat 9/5
3:00 pm-7:45 pm
1 stop5h 45m
$207
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
DEN-PIA
SLC-STL
DEN-RFD
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
DEN-PIA
SLC-STL
DEN-RFD
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 $309). Flying from Wyoming to Illinois in January is currently the most expensive (average of $609). 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 July 28, 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 July 28, 2026.
The most flights from USWY to USIL are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 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 July 28, 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.
Boarding
7.7
Food
6.6
Crew
8.1
Comfort
7.3
Overall
7.4
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreDeb,Jan 2025
MKE - ORD
Boarding
7.7
Food
6.6
Crew
8.1
Comfort
7.3
Overall
7.4
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreDeb,Jan 2025
MKE - ORD
Boarding
7.7
Food
6.6
Crew
8.1
Comfort
7.3
Overall
7.4
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreDeb,Jan 2025
MKE - 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.
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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 July 28, 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 July 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$223 | Average$385 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$281 | Average$413 | FlexibilityNo cancel fee | On-time69% |