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Cheap flights from Illinois to Wyoming from $34

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Wyoming departing on 5/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Wyoming

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:08 pm - 9:41 pm
STL
-
DEN
2h 33mnonstop
Frontier Logo
4:15 pm - 7:23 pm
DEN
-
STL
2h 08mnonstop
$89Frontier
Fri, May 15 - Mon, May 18
Frontier Logo
8:08 pm - 9:41 pm
STL
-
DEN
2h 33mnonstop
Frontier Logo
4:12 pm - 7:23 pm
DEN
-
STL
2h 11mnonstop
$99Frontier
Sat, Jun 6 - Tue, Jun 9
Delta Logo
7:13 pm - 11:41 pm
MDW
-
DEN
5h 28m
1 stop
Delta Logo
12:12 pm - 6:18 pm
DEN
-
MDW
5h 06m
1 stop
$167Delta
Wed, Jun 3 - Wed, Jun 10
Allegiant Air Logo
5:13 pm - 6:36 pm
PIA
-
DEN
2h 23mnonstop
Allegiant Air Logo
4:27 pm - 7:30 pm
DEN
-
PIA
2h 03mnonstop
$235Allegiant Air
Thu, May 21 - Sun, May 24
Allegiant Air Logo
5:13 pm - 6:36 pm
PIA
-
DEN
2h 23mnonstop
Allegiant Air Logo
4:24 pm - 7:30 pm
DEN
-
PIA
2h 06mnonstop
$242Allegiant Air
Thu, May 28 - Sun, Jun 7
United Airlines Logo
8:50 am - 10:34 am
PIA
-
DEN
2h 44mnonstop
United Airlines Logo
5:55 pm - 9:19 pm
DEN
-
PIA
2h 24mnonstop
$269United Airlines
Sat, May 9 - Wed, May 13
United Airlines Logo
9:05 am - 10:35 am
MLI
-
DEN
2h 30mnonstop
United Airlines Logo
5:38 pm - 8:54 pm
DEN
-
MLI
2h 16mnonstop
$269United Airlines
Wed, May 27 - Sun, May 31
American Airlines Logo
6:54 pm - 12:06 am
PIA
-
DEN
6h 12m
1 stop
American Airlines Logo
6:19 am - 1:02 pm
DEN
-
PIA
5h 43m
1 stop
$289American Airlines
Sun, May 10 - Sat, May 16
Delta Logo
5:17 pm - 12:33 am
MLI
-
DEN
8h 16m
1 stop
Delta Logo
7:05 am - 4:37 pm
DEN
-
MLI
8h 32m
1 stop
$289Delta
Sat, May 23 - Wed, May 27
American Airlines Logo
1:16 pm - 3:30 pm
ORD
-
JAC
3h 14mnonstop
American Airlines Logo
3:49 pm - 8:14 pm
JAC
-
ORD
3h 25mnonstop
$295American Airlines
Tue, May 26 - Wed, Jun 3

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Allegiant Air flights from Illinois to Wyoming

Our best Allegiant Air deals on Illinois to Wyoming flight tickets
Allegiant Air
May 21
PIA5:13 pmGreater Peoria
2h 23m
DEN6:36 pmDenver Intl
May 24
DEN4:27 pmDenver Intl
2h 03m
PIA7:30 pmGreater Peoria
$235
Allegiant Air
May 28
PIA5:13 pmGreater Peoria
2h 23m
DEN6:36 pmDenver Intl
Jun 7
DEN4:24 pmDenver Intl
2h 06m
PIA7:30 pmGreater Peoria
$242
Allegiant Air
Oct 8
PIA5:24 pmGreater Peoria
2h 20m
DEN6:44 pmDenver Intl
Oct 11
DEN11:15 amDenver Intl
1h 59m
PIA2:14 pmGreater Peoria
$258

Southwest flights from Illinois to Wyoming

Our best Southwest deals on Illinois to Wyoming flight tickets
Southwest
Jun 3
MDW8:50 pmChicago Midway
2h 45m
DEN10:35 pmDenver Intl
Jun 6
DEN5:15 amDenver Intl
2h 20m
MDW8:35 amChicago Midway
$211
Southwest
May 12
MDW10:10 amChicago Midway
2h 40m
DEN11:50 amDenver Intl
May 19
DEN8:40 amDenver Intl
5h 15m
2 stops
MDW2:55 pmChicago Midway
$216
Southwest
May 6
MDW6:30 amChicago Midway
2h 40m
DEN8:10 amDenver Intl
May 6
DEN2:20 pmDenver Intl
4h 30m
1 stop
MDW7:50 pmChicago Midway
$217

momondo 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, momondo users made 832,500 searches. Data last updated April 19, 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

Price

Cheapest round-trip

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Fri 5/15

8:08 pm-9:41 pm

Nonstop2h 33m

Denver Intl

Mon 5/18

4:15 pm-7:23 pm

Nonstop2h 08m

$89

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sat 6/6

8:08 pm-9:41 pm

Nonstop2h 33m

Denver Intl

Tue 6/9

4:12 pm-7:23 pm

Nonstop2h 11m

$99

ChicagoDenver

MDW - DEN

MDWDEN

Chicago Midway

Wed 6/3

7:13 pm-11:41 pm

1 stop5h 28m

Denver Intl

Wed 6/10

12:12 pm-6:18 pm

1 stop5h 06m

$167
Quickest round-trip

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 5/21

5:13 pm-6:36 pm

Nonstop2h 23m

Denver Intl

Sun 5/24

4:27 pm-7:30 pm

Nonstop2h 03m

$235

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Thu 5/28

5:13 pm-6:36 pm

Nonstop2h 23m

Denver Intl

Sun 6/7

4:24 pm-7:30 pm

Nonstop2h 06m

$242

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Sat 5/9

8:50 am-10:34 am

Nonstop2h 44m

Denver Intl

Wed 5/13

5:55 pm-9:19 pm

Nonstop2h 24m

$269

MolineDenver

MLI - DEN

MLIDEN

Moline Quad-City

Wed 5/27

9:05 am-10:35 am

Nonstop2h 30m

Denver Intl

Sun 5/31

5:38 pm-8:54 pm

Nonstop2h 16m

$269

PeoriaDenver

PIA - DEN

PIADEN

Greater Peoria

Sun 5/10

6:54 pm-12:06 am

1 stop6h 12m

Denver Intl

Sat 5/16

6:19 am-1:02 pm

1 stop5h 43m

$289

MolineDenver

MLI - DEN

MLIDEN

Moline Quad-City

Sat 5/23

5:17 pm-12:33 am

1 stop8h 16m

Denver Intl

Wed 5/27

7:05 am-4:37 pm

1 stop8h 32m

$289

ChicagoJackson

ORD - JAC

ORDJAC

Chicago O'Hare Intl

Tue 5/26

1:16 pm-3:30 pm

Nonstop3h 14m

Jackson Hole

Wed 6/3

3:49 pm-8:14 pm

Nonstop3h 25m

$295

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Wyoming from

How to get the cheapest flight ticket from Illinois to Wyoming

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Wyoming?

The cheapest month to fly to Wyoming from Illinois is in April. Flight prices, which tend to average around $318, are often lower during this time because this is during the off-season. If you aren’t able to travel to Wyoming during the month of April, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $379.

What is the cheapest day to depart on your flight to Wyoming?

The cheapest day to depart from Illinois to Wyoming is on a Tuesday. Travelers who choose to depart for Wyoming on a Tuesday will often find tickets for as low as $391. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Wyoming for around $481.

What is the cheapest time of day to depart on your flight to Wyoming?

Our most recent data shows that the best time of day to fly to Wyoming is at noon. Flights from Illinois to Wyoming during this time can be as low as $402. In the morning is when there is more demand to fly to Wyoming, so prices are often more expensive at around $478 per ticket.

What is the cheapest Illinois to Wyoming flight route?

Fly from Chicago O'Hare Intl to Jackson Hole for the best Illinois - Wyoming flight prices

How far in advance should I book a flight to Wyoming?

You are more likely to see cheaper flights to Wyoming from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Wyoming for around $431 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Wyoming from Illinois for as low as $383 on momondo.

What cabin class options are available on Illinois to Wyoming flights?

There are 4 cabin classes available to choose from on Illinois to Wyoming flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Wyoming flights?

You could potentially save up to 22% on your flight if you consider stops on a Illinois to Wyoming flight.

Cheap Illinois to Wyoming flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Wyoming

Best Price Found

$204

Fastest flight time

2h 20m

Direct flights

Every day

Airports in Wyoming

26 airports
The best one-way flight to Wyoming from Illinois in the past 72 hours is $204. The best round-trip flight deal from Illinois to Wyoming found on momondo in the last 72 hours is $397.
The fastest flight from Illinois to Wyoming takes 2h 20m
Direct flights go from Illinois to Wyoming every day.
There are 26 airports in Wyoming. From Illinois there are direct flights to Denver Intl (DEN).
Search flight deals

Frequently asked questions about flying from Illinois to Wyoming

  • When did momondo last update prices for flights from Illinois to Wyoming?

    Prices for flights from Illinois to Wyoming were last updated today.

  • How many operators does momondo search for flights from Illinois to Wyoming?

  • How old do you have to be to fly from Illinois to Wyoming?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Wyoming.

  • What documentation or ID do you need to fly to Wyoming?

    The travel and health documents you'll need for your trip to Wyoming may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Wyoming. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Illinois to Wyoming?

Best airlines flying from Illinois to Wyoming

Compare and see reviews for airlines that fly from Illinois to Wyoming with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,604 reviews
Search United Airlines flights
DeltaPriceFrom $265Free CancellationRating
7.9
8,422 reviews
Search Delta flights
American AirlinesPriceFrom $289Free CancellationRating
7.1
11,620 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Wyoming?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Wyoming. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to Wyoming with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Wyoming flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Wyoming?

momondo helps you find the best flight between Illinois and Wyoming by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Illinois to Wyoming right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Wyoming from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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