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Great Falls

$128+ Cheap flights from Illinois to Great Falls (GTF)

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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — GTF
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Illinois to Great Falls

Keep the following information in mind while searching for Illinois to Great Falls flight deals. Data was last updated May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$249
(United Airlines)

One-way from

$128
(Delta)

Popular in

June

Cheapest in

May

Average price

$263
Provider with most accurate pricing for Chicago (CHI)-Great Falls flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Great Falls flights.
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From Illinois to Great Falls
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One-way flight from Illinois to Great Falls
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Highest demand for flights based on searches. 11% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Illinois to Great Falls

Cheapest flights from Illinois to Great Falls
Explore the most affordable flight options available from Illinois to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This United Airlines deal was found by Cheapflights users on 5/1. 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 8/168:45 amORD - GTF
Nonstop3h 44mUnited Airlines
Tue 8/192:35 pmGTF - ORD
1 stop7h 07mUnited Airlines
Deal found 5/1$249
This Delta deal was found by Cheapflights users on 4/30. 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 6/71:55 pmMDW - GTF
1 stop7h 37mDelta
Sat 6/146:00 amGTF - MDW
1 stop6h 06mDelta
Deal found 4/30$256
This Delta deal was found by Cheapflights users on 5/1. 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 5/174:30 pmORD - GTF
1 stop7h 01mDelta
Wed 5/216:00 amGTF - ORD
1 stop7h 28mDelta
Deal found 5/1$256
This Mytrip deal was found by Cheapflights users on 5/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/2211:50 amORD - GTF
1 stop22h 37mMultiple Airlines
Fri 6/2710:17 amGTF - ORD
1 stop23h 33mMultiple Airlines
Deal found 5/1$322
This Delta deal was found by Cheapflights users on 4/30. 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 5/245:00 pmSTL - GTF
1 stop6h 31mDelta
Sat 5/315:45 amGTF - STL
1 stop6h 49mDelta
Deal found 4/30$326
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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.
Sat 6/76:00 amORD - GTF
1 stop11h 29mAlaska Airlines
Tue 6/105:09 pmGTF - ORD
1 stop11h 31mAlaska Airlines
Deal found 4/30$326
This United Airlines deal was found by Cheapflights users on 4/30. 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 6/255:20 amSTL - GTF
1 stop16h 50mUnited Airlines
Mon 6/302:35 pmGTF - STL
1 stop24h 54mUnited Airlines
Deal found 4/30$508
This United Airlines deal was found by Cheapflights users on 4/30. 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 6/258:47 amPIA - GTF
1 stop13h 23mUnited Airlines
Mon 6/302:35 pmGTF - PIA
2 stops29h 57mUnited Airlines
Deal found 4/30$601

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Great Falls 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 May 1, 2025.
Use the filters below to find and compare flights from Illinois to Great Falls that are best for you.

Fly from

Illinois

Fly to

Great Falls

Route

Depart

Return

Price

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Sat 8/16

8:45 am-11:29 am

Nonstop3h 44m

Great Falls

Tue 8/19

2:35 pm-10:42 pm

1 stop7h 07m

$249

ChicagoGreat Falls

MDW - GTF

MDWGTF

Chicago Midway

Sat 6/7

1:55 pm-8:32 pm

1 stop7h 37m

Great Falls

Sat 6/14

6:00 am-1:06 pm

1 stop6h 06m

$256

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Sat 5/17

4:30 pm-10:31 pm

1 stop7h 01m

Great Falls

Wed 5/21

6:00 am-2:28 pm

1 stop7h 28m

$256

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Sun 6/22

11:50 am-9:27 am

1 stop22h 37m

Great Falls

Fri 6/27

10:17 am-10:50 am

1 stop23h 33m

$322

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Sat 6/7

6:00 am-4:29 pm

1 stop11h 29m

Great Falls

Tue 6/10

5:09 pm-5:40 am

1 stop11h 31m

$326

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Sat 5/24

5:00 pm-10:31 pm

1 stop6h 31m

Great Falls

Sat 5/31

5:45 am-1:34 pm

1 stop6h 49m

$326

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Wed 6/25

5:20 am-9:10 pm

1 stop16h 50m

Great Falls

Mon 6/30

2:35 pm-4:29 pm

1 stop24h 54m

$508

PeoriaGreat Falls

PIA - GTF

PIAGTF

Greater Peoria

Wed 6/25

8:47 am-9:10 pm

1 stop13h 23m

Great Falls

Mon 6/30

2:35 pm-9:32 pm

2 stops29h 57m

$601

ChicagoGreat Falls

MDW - GTF

MDWGTF

Chicago Midway

Wed 6/4

1:55 pm-8:32 pm

1 stop7h 37m

$128

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

Wed 6/4

8:00 am-4:29 pm

1 stop9h 29m

$128

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 15 results
1
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Best time to book a flight from Illinois to Great Falls

Have a flexible travel schedule? Discover the best time to fly to Great Falls from Illinois with our price prediction graph.
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 Great Falls

What is the cheapest month to book a flight from Illinois to Great Falls?

Currently, January is the cheapest month in which you can book a flight from Illinois to Great Falls (average of $367). Flying from Illinois to Great Falls in June is currently the most expensive (average of $579). 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 GTF?

Find hourly flight availability from Illinois to Great Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Great Falls as you normally would.

Rainfall in Great Falls by month

Plan your trip to Great Falls by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Great Falls ranges from 0.5 - 2.5 inches per month. June is typically the wettest month, when rainfall can reach 2.5 in. January is typically the driest time to visit Great Falls when rainfall is around 0.5 in.

Temperature in Great Falls by month

Plan your trip to Great Falls by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Great Falls, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 24.8 F).

Reviews of airlines servicing Great Falls

Get insights into the airlines that provide service to Great Falls. 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 Great Falls. Reviews last updated May 1, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Illinois to Great Falls to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Great Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Great Falls from Illinois?

    Great Falls (GTF), located 3.5 mi from the city center, is the airport you fly into when you book flights from Illinois to Great Falls.

  • What are the cheapest airlines to fly from Illinois to Great Falls one-way?

    The cheapest airlines for a one-way flight from Illinois to Great Falls are Delta ($128), Hawaiian Airlines ($128), and Alaska Airlines ($259).

  • What are the most popular routes from Illinois to Great Falls?

    While some choose either Chicago Midway - Great Falls or Lambert-St Louis - Great Falls, Chicago O'Hare Intl - Great Falls is the most popular route from Illinois to Great Falls.

  • Can I find deals for flights from Illinois to Great Falls that include hotel bookings?

    Yes. In addition to deals on Illinois to Great Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Great Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Great Falls.

  • Can I find deals for business class flights from Illinois to Great Falls?

    Yes. Cheapflights offers flight deals from Illinois to Great Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Great Falls?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Great Falls (average of $367). Flying from Illinois to Great Falls in June is currently the most expensive (average of $579). 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.

See more FAQs

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Top 2 airlines flying from Illinois to Great Falls

Discover the top 2 airlines that operate flights from Illinois to Great Falls. 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$225Average$323FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$248Average$526FlexibilityNo cancel feeOn-time69%

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