What are the cheapest airlines flying from Portland, Maine to Kalispell round-trip?

Flying on American Airlines is currently your cheapest option to Kalispell, with prices starting at $473. Another option worth looking into is United Airlines, starting at $516 round trip.

What is the cheapest day to fly from Portland, Maine to Kalispell?

Travelers seeking maximum savings on their Portland, Maine to Kalispell flight should consider departing on Friday afternoons when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Kalispell ranges from 1.0 - 2.6 inches per month. June is typically the wettest month, when rainfall can reach 2.6 in. February is typically the driest time to visit Kalispell when rainfall is around 1.0 in.

If weather is an important factor for your trip to Kalispell, 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 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

What is the cheapest day to fly round-trip from Portland, Maine to Kalispell?

Flights from Portland, Maine to Kalispell are found to be more expensive on Wednesday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Kalispell.

What is the cheapest time of day to fly from PWM to FCA?

When flying from Portland, Maine to Kalispell, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 4% versus a flight in the morning.

Can I find deals for flights from Portland to Kalispell that include hotel bookings?

Yes. In addition to deals on Portland to Kalispell flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portland to Kalispell?

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

Can I find deals for business class flights from Portland to Kalispell?

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

Find Cheap Flights from Portland, ME to Kalispell

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Best time to book a flight from Portland to Kalispell

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Estimated round-trip price

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Everything you need to know about your flight from Portland to Kalispell

What is the cheapest month to book a flight from Portland, Maine to Kalispell?

Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Kalispell (average of $373). Flying from Portland, Maine to Kalispell in July is currently the most expensive (average of $600). 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.

Reviews of airlines servicing Kalispell

See what other customers who have flown with United Airlines and American Airlines from Portland to Kalispell have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines

7.4

Good

8,937 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

American Airlines

7.2

Good

10,000 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

2.0

Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

What are the cheapest airlines flying from Portland, Maine to Kalispell round-trip?
Flying on American Airlines is currently your cheapest option to Kalispell, with prices starting at $473. Another option worth looking into is United Airlines, starting at $516 round trip.
Can I find deals for flights from Portland to Kalispell that include hotel bookings?
Yes. In addition to deals on Portland to Kalispell flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portland to Kalispell?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Kalispell.
Can I find deals for business class flights from Portland to Kalispell?
Yes. Cheapflights offers flight deals from Portland to Kalispell 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 Portland, Maine to Kalispell?
Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Kalispell (average of $373). Flying from Portland, Maine to Kalispell in July is currently the most expensive (average of $600). 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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Other flights to Kalispell

Top 2 airlines flying from Portland to Kalispell

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$473	Average$559	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$516	Average$766	FlexibilityNo cancel fee	On-time69%

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Find cheap flights from Portland to Kalispell with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Best time to book a flight from Portland to Kalispell

Have a flexible travel schedule? Discover the best time to fly to Kalispell from Portland with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portland to Kalispell

What is the cheapest month to book a flight from Portland, Maine to Kalispell?

Reviews of airlines servicing Kalispell

See what other customers who have flown with United Airlines and American Airlines from Portland to Kalispell have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines flying from Portland, Maine to Kalispell round-trip?

Can I find deals for flights from Portland to Kalispell that include hotel bookings?

How can I find direct flights from Portland to Kalispell?

Can I find deals for business class flights from Portland to Kalispell?

What is the cheapest month to book a flight from Portland, Maine to Kalispell?

Traveling to a place near Kalispell?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portland to Kalispell

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Complete your trip

Complete your trip to Kalispell by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Portland to Kalispell by cabin class

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Other flights to Kalispell

Explore flights to Kalispell departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2025.

Portland and Kalispell flights

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Other flights from Portland

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Top 2 airlines flying from Portland to Kalispell

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Cheap flights from Portland, ME to Kalispell (PWM - FCA)

Find cheap flights from Portland to Kalispell with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Best time to book a flight from Portland to Kalispell

Have a flexible travel schedule? Discover the best time to fly to Kalispell from Portland with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portland to Kalispell

What is the cheapest month to book a flight from Portland, Maine to Kalispell?

Reviews of airlines servicing Kalispell

See what other customers who have flown with United Airlines and American Airlines from Portland to Kalispell have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines flying from Portland, Maine to Kalispell round-trip?

Can I find deals for flights from Portland to Kalispell that include hotel bookings?

How can I find direct flights from Portland to Kalispell?

Can I find deals for business class flights from Portland to Kalispell?

What is the cheapest month to book a flight from Portland, Maine to Kalispell?

Traveling to a place near Kalispell?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Kalispell

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Portland to Kalispell

100% Free

Book with Flexibility

Travel Smart