$100+ Cheap flights from Illinois to Idaho
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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Illinois to Idaho 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 Idaho
Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Idaho (USID). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2025.
Round-trip from | $188 (CheapOair) |
|---|---|
One-way from | $100 (Delta) |
Good round-trip deal | $349 or less |
Find flight deals from Illinois to Idaho
Cheapest flights from Illinois to IdahoExplore the most affordable flight options available from Illinois to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2025.
Explore the most affordable flight options available from Illinois to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2025.
This CheapOair deal was found by Cheapflights users on 1/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 1/21. 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.
This Southwest deal was found by Cheapflights users on 1/21. 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.
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 1/21. 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.
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Expedia deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 1/21. 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.
Find flights from Illinois to Idaho within your budget
Customize your flight search to find flights from Illinois to Idaho 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 enero 21, 2025.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoBoise
ORD - BOI
ORDBOI
Chicago O'Hare Intl
mar. 3/4
1:32 pm-12:32 pm
1 stop24h 00m
Boise Air Term. Gowen Fld
mar. 3/11
1:31 pm-6:36 am
1 stop16h 05m
ChicagoSpokane
MDW - GEG
MDWGEG
Chicago Midway
sáb. 2/8
6:05 am-12:20 pm
1 stop8h 15m
Spokane
sáb. 2/15
5:00 am-4:25 pm
1 stop9h 25m
ChicagoSpokane
ORD - GEG
ORDGEG
Chicago O'Hare Intl
sáb. 2/8
6:15 am-1:00 pm
1 stop8h 45m
Spokane
sáb. 2/15
5:00 am-6:30 pm
1 stop11h 30m
ChicagoSpokane
MDW - GEG
MDWGEG
Chicago Midway
mié. 3/5
2:08 pm-12:03 am
2 stops11h 55m
Spokane
mié. 3/12
6:00 am-2:15 pm
1 stop6h 15m
ChicagoSpokane
ORD - GEG
ORDGEG
Chicago O'Hare Intl
mar. 2/4
5:45 am-4:19 pm
2 stops12h 34m
Spokane
mié. 2/12
5:00 am-1:30 pm
1 stop6h 30m
ChicagoBoise
MDW - BOI
MDWBOI
Chicago Midway
sáb. 3/8
6:59 pm-11:58 pm
1 stop5h 59m
Boise Air Term. Gowen Fld
lun. 3/10
5:30 am-2:15 pm
1 stop7h 45m
ChicagoBoise
ORD - BOI
ORDBOI
Chicago O'Hare Intl
mié. 2/19
7:00 am-4:16 pm
1 stop10h 16m
Boise Air Term. Gowen Fld
dom. 2/23
5:30 am-11:30 am
1 stop5h 00m
ChicagoBoise
ORD - BOI
ORDBOI
Chicago O'Hare Intl
mar. 2/4
3:03 pm-10:23 pm
1 stop8h 20m
Boise Air Term. Gowen Fld
lun. 2/10
4:59 pm-2:03 pm
1 stop20h 04m
ChicagoBoise
ORD - BOI
ORDBOI
Chicago O'Hare Intl
jue. 4/10
10:55 am-8:49 pm
1 stop10h 54m
Boise Air Term. Gowen Fld
lun. 4/14
8:59 pm-5:59 am
1 stop8h 00m
ChicagoBoise
ORD - BOI
ORDBOI
Chicago O'Hare Intl
mar. 3/4
7:35 pm-10:45 pm
Nonstop4h 10m
Boise Air Term. Gowen Fld
mar. 3/11
5:25 pm-12:23 am
1 stop5h 58m
Best time to book a flight from Illinois to Idaho
Have a flexible travel schedule? Discover the best time to fly to Idaho from Illinois with our price prediction graph.
Travel insights for flights from Illinois to Idaho
Get recent, data-driven insights about flights from Illinois to Idaho including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from Illinois to Idaho?
Currently, October is the cheapest month in which you can book a flight from Illinois to Idaho (average of $314). Flying from Illinois to Idaho in June is currently the most expensive (average of $436). 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 ID?
Find hourly flight availability from Illinois to Idaho. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 21, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Idaho as you normally would.
Weekly flight availability from Illinois to Idaho
Explore weekly flight availability from Illinois to Idaho. 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 enero 21, 2025.
The most flights from USIL to USID are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
Rainfall in Idaho by month
Plan your trip to Idaho by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Idaho ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Idaho when rainfall is around 0.2 in.
Temperature in Idaho by month
Plan your trip to Idaho by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Idaho, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).
Reviews of airlines servicing Idaho
Get insights into the airlines that provide service to Idaho. 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 Idaho. Reviews last updated enero 21, 2025.
Read reviews from past customers who have flown Spirit Airlines, Alaska Airlines and United Airlines from Illinois to Idaho. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Boarding
Crew
Comfort
Food
Overall
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Entertainment
Boarding
Crew
Comfort
Food
Overall
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Entertainment
Boarding
Crew
Comfort
Food
Overall
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Entertainment
Boarding
Crew
Comfort
Food
Overall
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Entertainment
Boarding
Crew
Comfort
Food
Overall
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Entertainment
Boarding
Crew
Comfort
Food
Overall
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Related info for your journey
Find useful and relevant information for your journey from Illinois to Idaho. 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 Illinois to Idaho
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Illinois to Idaho
Discover the top 6 airlines that operate flights from Illinois to Idaho. 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 enero 21, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$115 | Average$233 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$227 | Average$346 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$228 | Average$344 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$508 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$258 | Average$353 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$320 | Average$699 | FlexibilityNo cancel fee | On-time69% |