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$253+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — GTF
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Illinois to Great Falls

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Great Falls (GTF). 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

$324
(Delta)

One-way from

$253
(Delta)
From Illinois to Great Falls
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One-way flight from Illinois to Great Falls
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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 enero 21, 2025.

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.
mar. 2/115:00 pmORD - GTF
1 stop6h 40mDelta
vie. 2/285:59 amGTF - ORD
1 stop4h 31mDelta
Deal found 1/21$324
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.
jue. 5/11:16 pmMDW - GTF
1 stop7h 48mDelta
dom. 5/45:50 amGTF - MDW
1 stop7h 32mDelta
Deal found 1/21$334
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.
sáb. 3/17:45 amORD - GTF
1 stop7h 20mAlaska Airlines
dom. 3/22:45 pmGTF - ORD
1 stop14h 08mAlaska Airlines
Deal found 1/20$405
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/42:33 pmORD - GTF
1 stop7h 22mUnited Airlines
lun. 6/92:15 pmGTF - ORD
1 stop7h 26mUnited Airlines
Deal found 1/20$496
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.
mar. 2/42:49 pmSTL - GTF
1 stop26h 24mAlaska Airlines
sáb. 2/84:53 pmGTF - STL
1 stop20h 00mAlaska Airlines
Deal found 1/20$536
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.
mar. 2/45:00 pmSTL - GTF
1 stop6h 40mDelta
sáb. 2/85:40 amGTF - STL
2 stops8h 10mDelta
Deal found 1/20$542
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/134:30 pmSTL - GTF
1 stop5h 25mUnited Airlines
dom. 6/227:00 amGTF - STL
1 stop13h 07mUnited Airlines
Deal found 1/20$681

Find flights from Illinois to Great Falls within your budget

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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

mar. 2/11

5:00 pm-10:40 pm

1 stop6h 40m

Great Falls

vie. 2/28

5:59 am-11:30 am

1 stop4h 31m

$324

ChicagoGreat Falls

MDW - GTF

MDWGTF

Chicago Midway

mar. 2/11

1:26 pm-8:41 pm

1 stop8h 15m

Great Falls

vie. 2/28

5:59 am-12:42 pm

1 stop5h 43m

$351

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

mar. 2/18

5:54 pm-2:05 pm

1 stop21h 11m

Great Falls

lun. 2/24

2:45 pm-5:53 am

1 stop14h 08m

$425

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

vie. 5/23

9:40 pm-1:26 pm

1 stop16h 46m

Great Falls

dom. 6/1

2:15 pm-9:41 am

1 stop18h 26m

$523

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

vie. 2/14

5:35 am-4:49 pm

2 stops12h 14m

Great Falls

lun. 2/17

5:39 pm-5:28 am

2 stops10h 49m

$530

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

mar. 2/4

2:49 pm-4:13 pm

1 stop26h 24m

Great Falls

sáb. 2/8

4:53 pm-1:53 pm

1 stop20h 00m

$536

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

mar. 2/4

5:00 pm-10:40 pm

1 stop6h 40m

Great Falls

sáb. 2/8

5:40 am-2:50 pm

2 stops8h 10m

$542

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

mié. 2/5

4:36 pm-9:36 pm

1 stop6h 00m

Great Falls

dom. 2/9

6:45 am-11:30 pm

2 stops15h 45m

$660

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

mié. 7/9

3:30 pm-8:03 pm

1 stop5h 33m

$253

ChicagoGreat Falls

ORD - GTF

ORDGTF

Chicago O'Hare Intl

dom. 7/20

5:00 am-9:00 pm

1 stop17h 00m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 11 results
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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.

Travel insights for flights from Illinois to Great Falls

Get recent, data-driven insights about flights from Illinois to Great Falls including ideal travel times, pricing trends, and more.

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 $605). 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 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 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 enero 21, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines and Alaska 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
9,706 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,706 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,521 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,985 reviews
Alaska Airlines
8.0
Very good
9,706 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Entertainment

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 ($253), United Airlines ($267), and Alaska Airlines ($368).

  • 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 $605). 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.

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Alternative routes for Illinois to Great Falls

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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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$182Average$397FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$430FlexibilityNo cancel feeOn-time69%
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