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$368+ Cheap flights from Casper to Portland, ME (CPR - PWM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — PWM
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
1 adult, Economy
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Cheap flight deals from Casper to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Casper (CPR) to Portland (PWM). 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 julio 30, 2025.

Round-trip from

$368
(United Airlines)
From Casper Natrona County to Portland
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Find flight deals from Casper to Portland

Cheapest flights from Casper to Portland
Explore the most affordable flight options available from Casper to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.

This United Airlines deal was found by Cheapflights users on 7/28. 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.
mar. 10/287:00 amCPR - PWM
1 stop6h 48mUnited Airlines
mar. 11/43:20 pmPWM - CPR
1 stop8h 38mUnited Airlines
Deal found 7/28$368

Cheapflights Fare Finder

 
Customize your flight search to find flights from Casper to Portland 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 julio 30, 2025.
Use the filters below to find and compare flights from Casper to Portland that are best for you.

Fly from

Casper

Fly to

Portland

Route

Depart

Return

Price

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

mar. 10/28

7:00 am-3:48 pm

1 stop6h 48m

Portland

mar. 11/4

3:20 pm-9:58 pm

1 stop8h 38m

$368

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Best time to book a flight from Casper to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Casper 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.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated julio 30, 2025.
Peruse reviews from past customers who have flown with United Airlines from Casper to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,896 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

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
8,896 reviews
United Airlines
7.4
Good
8,896 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

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

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

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

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

  • How can I find direct flights from Casper to Portland?

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

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

    Yes. Cheapflights offers flight deals from Casper to Portland 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 Casper to Portland, Maine?

    Currently, January is the cheapest month in which you can book a flight from Casper to Portland, Maine (average of $296). Flying from Casper to Portland, Maine in July is currently the most expensive (average of $394). 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

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Brunswick
North Conway
Auburn
Conway
Lewiston

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