Cheap flights from Great Falls (GTF) to Illinois from $109

Great Falls (GTF) is the airport you will fly out of if you book a flight from Great Falls to Illinois. It is only a 3.5 mi journey to Great Falls (GTF) from Great Falls’s city center.

Yes, there are multiple flights from Great Falls to Illinois for under $300. The cheapest flight booked recently is on Delta for just $218, but on average you can expect to pay $296.

There are currently 20+ open flights from Great Falls to Illinois within the next 7 days for less than $400.

On average you can expect to pay $513 for a flight from Great Falls to Illinois. The cheapest flight overall is $268 while the most popular route, (Great Falls - Chicago O'Hare Intl) is currently priced at $223.

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Great Falls Airport to Chicago O'Hare Intl Airport flight would often be abbreviated as a GTF to ORD flight. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Springfield Capital Airport (SPI).

The amount of baggage you can bring on your Great Falls to Illinois flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter Great Falls to Illinois flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

Many airlines flying from Great Falls to Illinois offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on Great Falls to Illinois flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The Great Falls to Illinois flight deals you see on this page were last updated on 5/29.

Currently, February is the cheapest month in which you can book a flight from Great Falls to Illinois (average of $244). Flying from Great Falls to Illinois in June is currently the most expensive (average of $326). 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.