$72+ Cheap flights from Illinois to Wyoming
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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — JAC
Aug 28 — Sep 41
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Illinois to Wyoming with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Wyoming
Cheapest
Best
Last-minute
One-way
Cheapest flights from Illinois to WyomingExplore the most affordable flight options available from Illinois to Wyoming. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.
Explore the most affordable flight options available from Illinois to Wyoming. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.
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.
Mon 8/246:17 pm
STL
- DEN
1 stop16h 02m
Frontier
Mon 8/314:00 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 7/27![Frontier logo]()
$135
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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.
Sun 9/610:07 am
PIA
- DEN
Nonstop2h 20m
Allegiant Air
Thu 9/102:16 pm
DEN
- PIA
Nonstop2h 03m
Allegiant Air
Deal found 7/29![Allegiant Air logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 10/248:10 pm
STL
- DEN
Nonstop2h 39m
Frontier
Sat 10/3111:59 pm
DEN
- STL
1 stop9h 41m
Frontier
Deal found 7/28![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/277:58 pm
STL
- DEN
Nonstop2h 27m
Frontier
Sat 8/2911:59 pm
DEN
- STL
1 stop16h 23m
Frontier
Deal found 7/28![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 9/168:10 pm
STL
- SLC
1 stop15h 31m
Frontier
Tue 9/224:16 pm
SLC
- STL
1 stop26h 01m
Frontier
Deal found 7/29![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 10/910:35 am
STL
- DEN
1 stop23h 56m
Frontier
Tue 10/134:12 pm
DEN
- STL
Nonstop2h 03m
Frontier
Deal found 7/28![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/308:10 pm
STL
- DEN
Nonstop2h 29m
Frontier
Sun 10/410:44 am
DEN
- STL
1 stop25h 26m
Frontier
Deal found 7/28![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/46:17 pm
STL
- DEN
1 stop16h 02m
Frontier
Sun 9/64:00 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 7/28![Frontier logo]()
$145
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 8/207:58 pm
STL
- DEN
Nonstop2h 27m
Frontier
Sun 8/234:00 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 7/29![Frontier logo]()
$146
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.
Mon 10/52:29 pm
STL
- DEN
2 stops22h 41m
Frontier
Sat 10/104:12 pm
DEN
- STL
Nonstop2h 03m
Frontier
Deal found 7/27![Frontier logo]()
$147
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 9/188:10 pm
STL
- DEN
Nonstop2h 29m
Frontier
Sat 9/194:12 pm
DEN
- STL
Nonstop2h 05m
Frontier
Deal found 7/25![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/118:10 pm
STL
- DEN
Nonstop2h 29m
Frontier
Tue 9/157:10 pm
DEN
- STL
1 stop17h 00m
Frontier
Deal found 7/28![Frontier logo]()
$151
Best flights from Illinois to WyomingDiscover carefully curated flight deals from Illinois to Wyoming that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2026.
Discover carefully curated flight deals from Illinois to Wyoming that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2026.
This Southwest deal was found by Cheapflights users on 7/28. 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.
Wed 8/266:30 pm
STL
- DEN
Nonstop2h 15m
Southwest
Wed 9/26:35 am
DEN
- STL
Nonstop2h 00m
Southwest
Deal found 7/28![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/245:10 am
STL
- DEN
Nonstop2h 33m
United Airlines
Mon 9/285:30 pm
DEN
- STL
Nonstop2h 06m
United Airlines
Deal found 7/28![United Airlines logo]()
$222
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:25 pm
MDW
- DEN
1 stop5h 09m
Delta
Tue 9/86:15 am
DEN
- MDW
1 stop6h 05m
Delta
Deal found 7/26![Delta logo]()
$233
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.
Tue 9/12:50 pm
STL
- DEN
1 stop3h 30m
Southwest
Tue 9/87:00 am
DEN
- STL
1 stop4h 55m
Southwest
Deal found 7/27![Southwest logo]()
$172
This Sun Country Air 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:31 pm
ORD
- DEN
1 stop15h 41m
Sun Country Air
Mon 8/176:01 pm
DEN
- ORD
1 stop17h 16m
Sun Country Air
Deal found 7/26![Sun Country Air logo]()
$405
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 8/316:00 am
ORD
- JAC
1 stop30h 15m
Alaska Airlines
Sat 9/53:10 pm
JAC
- ORD
2 stops14h 10m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$446
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.
Sat 8/156:00 pm
MDW
- DEN
Nonstop2h 40m
Southwest
Wed 8/197:25 pm
DEN
- MDW
Nonstop2h 25m
Southwest
Deal found 7/24![Southwest logo]()
$213
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:00 am
ORD
- DEN
Nonstop2h 39m
United Airlines
Mon 9/76:00 am
DEN
- ORD
Nonstop2h 43m
United Airlines
Deal found 7/26![United Airlines logo]()
$249
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 9/47:25 pm
MDW
- DEN
1 stop5h 09m
Delta
Wed 9/96:15 am
DEN
- MDW
1 stop6h 05m
Delta
Deal found 7/27![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 7/28. 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 9/125:05 pm
MDW
- DEN
Nonstop2h 45m
Southwest
Sat 9/1911:10 am
DEN
- MDW
1 stop5h 00m
Southwest
Deal found 7/28![Southwest logo]()
$219
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 9/227:05 am
ORD
- DEN
1 stop7h 52m
Delta
Sun 9/276:30 am
DEN
- ORD
1 stop5h 29m
Delta
Deal found 7/27![Delta logo]()
$264
This Southwest deal was found by Cheapflights users on 7/28. 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.
Fri 9/115:00 pm
MDW
- DEN
1 stop3h 50m
Southwest
Tue 9/154:30 pm
DEN
- MDW
Nonstop2h 20m
Southwest
Deal found 7/28![Southwest logo]()
$220
This United Airlines deal was found by Cheapflights users on 7/28. 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 8/294:40 pm
STL
- DEN
Nonstop2h 30m
United Airlines
Mon 8/315:35 pm
DEN
- STL
Nonstop2h 11m
United Airlines
Deal found 7/28![United Airlines logo]()
$267
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.
Thu 9/37:25 pm
MDW
- DEN
1 stop5h 09m
Delta
Sun 9/610:19 am
DEN
- MDW
1 stop5h 40m
Delta
Deal found 7/25![Delta logo]()
$270
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.
Tue 10/271:40 pm
STL
- DEN
Nonstop2h 29m
United Airlines
Fri 10/305:52 pm
DEN
- STL
Nonstop2h 07m
United Airlines
Deal found 7/24![United Airlines logo]()
$272
This Southwest deal was found by Cheapflights users on 7/28. 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 9/108:15 pm
MDW
- DEN
Nonstop2h 35m
Southwest
Sat 9/127:15 am
DEN
- MDW
Nonstop2h 20m
Southwest
Deal found 7/28![Southwest logo]()
$225
This Delta deal was found by Cheapflights users on 7/28. 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 8/211:25 pm
MDW
- DEN
1 stop4h 58m
Delta
Sun 8/2312:59 am
DEN
- MDW
1 stop7h 18m
Delta
Deal found 7/28![Delta logo]()
$277
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/263:50 pm
ORD
- SLC
1 stop6h 21m
United Airlines
Wed 9/308:03 am
SLC
- ORD
Nonstop3h 18m
United Airlines
Deal found 7/25![United Airlines logo]()
$291
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.
Fri 9/48:15 pm
MDW
- DEN
Nonstop2h 35m
Southwest
Tue 9/87:25 pm
DEN
- MDW
Nonstop2h 30m
Southwest
Deal found 7/24![Southwest logo]()
$244
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 9/185:10 pm
ORD
- DEN
1 stop5h 22m
Delta
Sun 9/2012:55 am
DEN
- ORD
1 stop6h 01m
Delta
Deal found 7/27![Delta logo]()
$277
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:21 pm
ORD
- SLC
Nonstop3h 38m
United Airlines
Sat 9/1210:40 am
SLC
- ORD
1 stop5h 25m
United Airlines
Deal found 7/25![United Airlines logo]()
$295
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.
Fri 9/184:10 pm
MDW
- DEN
1 stop4h 40m
Southwest
Mon 9/218:25 pm
DEN
- MDW
Nonstop2h 25m
Southwest
Deal found 7/27![Southwest logo]()
$245
This Delta deal was found by Cheapflights users on 7/28. 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.
Thu 8/206:00 am
ORD
- DEN
1 stop18h 34m
Delta
Thu 8/2712:59 am
DEN
- ORD
1 stop5h 57m
Delta
Deal found 7/28![Delta logo]()
$282
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:17 pm
ORD
- DEN
1 stop17h 03m
Alaska Airlines
Tue 9/226:17 am
DEN
- ORD
2 stops16h 42m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$458
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.
Sat 10/38:40 am
ORD
- SLC
1 stop5h 42m
United Airlines
Wed 10/78:03 am
SLC
- ORD
Nonstop3h 18m
United Airlines
Deal found 7/24![United Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 7/28. 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.
Fri 9/115:00 pm
MDW
- DEN
1 stop3h 50m
Southwest
Fri 9/1811:00 am
DEN
- MDW
1 stop5h 00m
Southwest
Deal found 7/28![Southwest logo]()
$251
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:21 pm
ORD
- SLC
Nonstop3h 38m
United Airlines
Mon 9/216:03 pm
SLC
- ORD
1 stop4h 56m
United Airlines
Deal found 7/26![United Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 7/28. 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 10/911:19 am
ORD
- DEN
1 stop6h 49m
Delta
Sun 10/1112:59 am
DEN
- ORD
1 stop5h 42m
Delta
Deal found 7/28![Delta logo]()
$298
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 9/146:00 am
ORD
- JAC
1 stop30h 22m
Alaska Airlines
Wed 9/232:10 pm
JAC
- ORD
2 stops22h 12m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$517
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 9/312:05 pm
MDW
- DEN
1 stop4h 55m
Southwest
Tue 9/811:15 am
DEN
- MDW
1 stop3h 45m
Southwest
Deal found 7/24![Southwest logo]()
$269
Last-minute flights from Illinois to WyomingDiscover last-minute flight deals from Illinois to Wyoming. Data last updated July 29, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Wyoming. Data last updated July 29, 2026 and is based on user searches.
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/159:57 pm
ORD
- DEN
Nonstop3h 00m
Frontier
Tue 8/189:55 am
DEN
- ORD
Nonstop2h 41m
Frontier
Deal found 7/26![Frontier logo]()
$161
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.
Mon 8/178:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Fri 8/214:00 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 7/27![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/179:57 pm
ORD
- DEN
Nonstop3h 00m
Frontier
Fri 8/219:55 am
DEN
- ORD
Nonstop2h 41m
Frontier
Deal found 7/28![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/182:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Mon 8/249:06 pm
DEN
- ORD
1 stop17h 53m
Frontier
Deal found 7/28![Frontier logo]()
$159
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/182:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Fri 8/219:55 am
DEN
- ORD
Nonstop2h 41m
Frontier
Deal found 7/26![Frontier logo]()
$160
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 8/207:58 pm
STL
- DEN
Nonstop2h 27m
Frontier
Sun 8/234:00 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 7/29![Frontier logo]()
$146
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 8/207:58 pm
STL
- DEN
Nonstop2h 27m
Frontier
Wed 8/2611:59 pm
DEN
- STL
1 stop16h 23m
Frontier
Deal found 7/27![Frontier logo]()
$152
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.
Mon 8/246:17 pm
STL
- DEN
1 stop16h 02m
Frontier
Mon 8/314:00 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 7/27![Frontier logo]()
$135
This Southwest deal was found by Cheapflights users on 7/28. 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 8/256:30 pm
STL
- DEN
Nonstop2h 15m
Southwest
Tue 9/16:35 am
DEN
- STL
Nonstop2h 00m
Southwest
Deal found 7/28![Southwest logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/277:58 pm
STL
- DEN
Nonstop2h 27m
Frontier
Sat 8/2911:59 pm
DEN
- STL
1 stop16h 23m
Frontier
Deal found 7/28![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/272:41 pm
ORD
- DEN
Nonstop3h 04m
Frontier
Sat 8/299:06 pm
DEN
- ORD
1 stop26h 43m
Frontier
Deal found 7/29![Frontier logo]()
$158
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.
Fri 8/286:17 pm
STL
- DEN
1 stop16h 02m
Frontier
Mon 8/314:00 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 7/27![Frontier logo]()
$141
One-way flights from Illinois to WyomingSearch for one-way flight options from Illinois to Wyoming. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
Search for one-way flight options from Illinois to Wyoming. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
This Trip.com deal was found by Cheapflights users on 7/29. 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 9/238:10 pm
STL
- SLC
1 stop15h 31m
Frontier
Deal found 7/29![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 9/98:10 pm
STL
- SLC
1 stop15h 31m
Frontier
Deal found 7/29![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 10/138:10 pm
STL
- SLC
1 stop12h 53m
Frontier
Deal found 7/28![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/308:10 pm
STL
- SLC
1 stop15h 31m
Frontier
Deal found 7/28![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 10/218:10 pm
STL
- SLC
1 stop25h 23m
Frontier
Deal found 7/28![Frontier logo]()
$79
This Trip.com deal was found by Cheapflights users on 7/29. 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.
Sun 9/208:10 pm
STL
- SLC
1 stop20h 11m
Frontier
Deal found 7/29![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 9/131:02 pm
STL
- SLC
1 stop27h 19m
Frontier
Deal found 7/29![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 9/268:10 pm
STL
- SLC
1 stop15h 31m
Frontier
Deal found 7/29![Frontier logo]()
$88
This Trip.com deal was found by Cheapflights users on 7/28. 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.
Thu 10/158:10 pm
STL
- SLC
1 stop12h 53m
Frontier
Deal found 7/28![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/317:58 pm
STL
- SLC
1 stop12h 33m
Frontier
Deal found 7/29![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 9/288:10 pm
STL
- SLC
1 stop15h 31m
Frontier
Deal found 7/29![Frontier logo]()
$91
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.
Mon 8/246:17 pm
STL
- DEN
1 stop28h 48m
Frontier
Deal found 7/25![Frontier logo]()
$91
Find flight deals from Illinois to Wyoming
Keep the following information in mind while searching for Illinois to Wyoming flight deals. Data was last updated July 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $135 (Kiwi.com) |
One-way from | $72 (Trip.com) |
Popular in | January |
Cheapest in | April |
Average price | $495 |
Good round-trip deal | $468 or less |
Good one-way deal | $214 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Wyoming 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 29, 2026.
Use the filters below to find and compare flights from Illinois to Wyoming that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Wed 8/26
6:30 pm-7:45 pm
Nonstop2h 15m
Denver Intl
Wed 9/2
6:35 am-9:35 am
Nonstop2h 00m
$157
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Tue 9/1
2:50 pm-5:20 pm
1 stop3h 30m
Denver Intl
Tue 9/8
7:00 am-12:55 pm
1 stop4h 55m
$172
ChicagoDenver
MDW - DEN
MDWDEN
Chicago Midway
Sat 8/15
6:00 pm-7:40 pm
Nonstop2h 40m
Denver Intl
Wed 8/19
7:25 pm-10:50 pm
Nonstop2h 25m
$213
ChicagoDenver
MDW - DEN
MDWDEN
Chicago Midway
Sat 9/12
5:05 pm-6:50 pm
Nonstop2h 45m
Denver Intl
Sat 9/19
11:10 am-5:10 pm
1 stop5h 00m
$219
ChicagoDenver
MDW - DEN
MDWDEN
Chicago Midway
Fri 9/11
5:00 pm-7:50 pm
1 stop3h 50m
Denver Intl
Tue 9/15
4:30 pm-7:50 pm
Nonstop2h 20m
$220
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Thu 9/24
5:10 am-6:43 am
Nonstop2h 33m
Denver Intl
Mon 9/28
5:30 pm-8:36 pm
Nonstop2h 06m
$222
ChicagoDenver
MDW - DEN
MDWDEN
Chicago Midway
Thu 9/10
8:15 pm-9:50 pm
Nonstop2h 35m
Denver Intl
Sat 9/12
7:15 am-10:35 am
Nonstop2h 20m
$225
ChicagoDenver
MDW - DEN
MDWDEN
Chicago Midway
Mon 8/31
7:25 pm-11:34 pm
1 stop5h 09m
Denver Intl
Tue 9/8
6:15 am-1:20 pm
1 stop6h 05m
$233
ChicagoDenver
MDW - DEN
MDWDEN
Chicago Midway
Fri 9/4
8:15 pm-9:50 pm
Nonstop2h 35m
Denver Intl
Tue 9/8
7:25 pm-10:55 pm
Nonstop2h 30m
$244
ChicagoDenver
MDW - DEN
MDWDEN
Chicago Midway
Fri 9/18
4:10 pm-7:50 pm
1 stop4h 40m
Denver Intl
Mon 9/21
8:25 pm-11:50 pm
Nonstop2h 25m
$245
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Wyoming
Have a flexible travel schedule? Discover the best time to fly to Wyoming from Illinois with our price prediction graph.
STL-DEN
ORD-DEN
STL-SLC
PIA-DEN
MDW-DEN
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 Wyoming
USIL-USWY
STL-DEN
ORD-DEN
STL-SLC
PIA-DEN
What is the cheapest month to book a flight from Illinois to Wyoming?
Currently, April is the cheapest month in which you can book a flight from Illinois to Wyoming (average of $362). Flying from Illinois to Wyoming in September is currently the most expensive (average of $512). 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 IL to WY?
Find hourly flight availability from Illinois to Wyoming. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Wyoming as you normally would.
Weekly flight availability from Illinois to Wyoming
Explore weekly flight availability from Illinois to Wyoming. 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 29, 2026.
The most flights from USIL to USWY are scheduled on a Monday (6 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Illinois to Wyoming?
Airfare is below average for this route at the moment.
Illinois to Wyoming flights typically cost between $418 and $666 in September.The cheapest round-trip price found within the last 5 days was $374 on American Airlines (Sep 7-Sep 14).
How far ahead should I book a flight from Illinois to Wyoming?
Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Wyoming. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Wyoming
Get insights into the airlines that provide service to Wyoming. 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 Wyoming. Reviews last updated July 29, 2026.
Read reviews from past customers who have flown United Airlines and American Airlines from Illinois to Wyoming. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.6
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentTim,May 2023
ORD - DLH
Food
6.6
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentTim,May 2023
ORD - DLH
Food
6.6
Comfort
7.3
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentTim,May 2023
ORD - DLH
Related info for your journey
Find useful and relevant information for your journey from Illinois to Wyoming. 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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Illinois to Wyoming
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Wyoming by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Wyoming by cabin class
Find flights from Illinois to Wyoming, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Wyoming flights
Browse other Illinois and Wyoming flight options. Last updated on July 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Wyoming
Find the right flight back to Illinois after your stay in Wyoming
Illinois to Wyoming flights
Consider these flights traveling from Illinois to Wyoming.
Top 2 airlines flying from Illinois to Wyoming
Discover the top 2 airlines that operate flights from Illinois to Wyoming. 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 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$275 | Average$513 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$289 | Average$518 | FlexibilityNo cancel fee | On-time69% |