How does KAYAK find such low prices on flights from Illinois to Idaho Falls?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Idaho Falls.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Idaho Falls?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Idaho Falls?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Idaho Falls?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Idaho Falls from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$181 CHEAP FLIGHTS from Illinois to Idaho Falls

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Cheap Flights from Illinois to Idaho Falls

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Illinois to Idaho Falls

Sat, Dec 5 - Sat, Dec 12

2:08 pm - 1:17 pmORD Chicago O'Hare Intl-IDA Idaho Falls Fanning Field

24h 09m1 stop Portland

3:44 pm - 1:10 pmIDA Idaho Falls Fanning Field-ORD Chicago O'Hare Intl

20h 26m1 stop Portland

$361Alaska Airlines

Sat, Dec 5 - Sat, Dec 12

4:00 pm - 10:25 pmORD Chicago O'Hare Intl-IDA Idaho Falls Fanning Field

7h 25m1 stop Salt Lake City

5:35 am - 5:06 pmIDA Idaho Falls Fanning Field-ORD Chicago O'Hare Intl

10h 31m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$366Delta

Sat, Dec 5 - Sat, Dec 12

12:32 pm - 10:25 pmORD Chicago O'Hare Intl-IDA Idaho Falls Fanning Field

10h 53m2 stops Minneapolis St Paul Salt Lake City

5:35 am - 4:43 pmIDA Idaho Falls Fanning Field-ORD Chicago O'Hare Intl

10h 08m2 stops Salt Lake City Minneapolis St Paul

$371Delta

Tue, Dec 15 - Sat, Dec 19

8:40 am - 1:37 pmORD Chicago O'Hare Intl-IDA Idaho Falls Fanning Field

5h 57m1 stop Denver Intl

4:20 pm - 10:42 pmIDA Idaho Falls Fanning Field-ORD Chicago O'Hare Intl

5h 22m1 stop Denver Intl

$375United Airlines

Wed, Dec 9 - Sun, Dec 13

10:00 am - 3:15 pmORD Chicago O'Hare Intl-IDA Idaho Falls Fanning Field

30h 15m2 stops Dallas/Fort Worth Las Vegas Harry Reid Intl

4:05 pm - 5:01 amIDA Idaho Falls Fanning Field-ORD Chicago O'Hare Intl

11h 56m1 stop Las Vegas Harry Reid Intl

$379Multiple Airlines

Thu, Feb 18 - Mon, Feb 22

1:42 pm - 10:05 pmORD Chicago O'Hare Intl-IDA Idaho Falls Fanning Field

9h 23m1 stop Dallas/Fort Worth

12:24 pm - 10:52 pmIDA Idaho Falls Fanning Field-ORD Chicago O'Hare Intl

9h 28m1 stop Phoenix Sky Harbor Intl

$399American Airlines

Fri, Dec 11 - Sun, Dec 13

4:59 pm - 11:02 pmORD Chicago O'Hare Intl-IDA Idaho Falls Fanning Field

7h 03m1 stop Phoenix Sky Harbor Intl

6:51 am - 2:43 pmIDA Idaho Falls Fanning Field-ORD Chicago O'Hare Intl

6h 52m1 stop Phoenix Sky Harbor Intl

$399American Airlines

Wed, Dec 16 - Sat, Dec 19

7:00 am - 1:37 pmORD Chicago O'Hare Intl-IDA Idaho Falls Fanning Field

7h 37m1 stop Denver Intl

4:20 pm - 10:42 pmIDA Idaho Falls Fanning Field-ORD Chicago O'Hare Intl

5h 22m1 stop Denver Intl

$417United Airlines

Sat, Jan 30 - Wed, Feb 3

8:40 am - 3:31 pmPIA Greater Peoria-IDA Idaho Falls Fanning Field

7h 51m1 stop Denver Intl

2:30 pm - 9:10 pmIDA Idaho Falls Fanning Field-PIA Greater Peoria

5h 40m1 stop Denver Intl

$459United Airlines

Tue, Nov 10 - Sat, Nov 14

5:00 pm - 10:59 pmORD Chicago O'Hare Intl-IDA Idaho Falls Fanning Field

6h 59m1 stop Phoenix Sky Harbor Intl

6:36 am - 2:43 pmIDA Idaho Falls Fanning Field-ORD Chicago O'Hare Intl

7h 07m1 stop Phoenix Sky Harbor Intl

$459American Airlines

Useful Info

Low season	March
High season	July
Cheapest flight	$181

Best time to beat the crowds but there is an average 4% increase in price.

Flight from Chicago O'Hare Airport to Idaho Falls

How does KAYAK find such low prices on flights from Illinois to Idaho Falls?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Idaho Falls.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Idaho Falls?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Idaho Falls?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Idaho Falls?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Idaho Falls from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.