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$379+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — PWM
nov. 28 — déc. 51
ven. 11/28
ven. 12/5
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 octobre 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$379
(United Airlines)
Provider with most accurate pricing for Casper Natrona County-Portland flight deals.
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Provider most trusted by Cheapflights users for Casper Natrona County-Portland flights.
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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 octobre 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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. 10/285:30 amCPR - PWM
1 stop8h 18mUnited Airlines
sam. 11/13:20 pmPWM - CPR
1 stop6h 57mUnited Airlines
Deal found 10/27$578
This United Airlines deal was found by Cheapflights users on 10/29. 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.
sam. 12/203:19 pmCPR - PWM
2 stops16h 25mUnited Airlines
dim. 12/285:30 amPWM - CPR
2 stops17h 11mUnited Airlines
Deal found 10/29$872
This United Airlines deal was found by Cheapflights users on 10/29. 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.
ven. 12/196:10 pmCPR - PWM
2 stops13h 34mUnited Airlines
dim. 12/285:30 amPWM - CPR
2 stops17h 11mUnited Airlines
Deal found 10/29$924

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 octobre 29, 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. 4/21

6:01 pm-10:44 am

2 stops14h 43m

Portland

sam. 4/25

9:34 am-8:12 pm

2 stops12h 38m

$379

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

lun. 4/20

6:01 pm-10:44 am

2 stops14h 43m

Portland

sam. 4/25

9:34 am-10:12 pm

2 stops14h 38m

$514

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

sam. 12/20

3:19 pm-9:44 am

2 stops16h 25m

Portland

dim. 12/28

5:30 am-8:41 pm

2 stops17h 11m

$872

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

ven. 12/19

6:10 pm-9:44 am

2 stops13h 34m

Portland

dim. 12/28

5:30 am-8:41 pm

2 stops17h 11m

$924

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

jeu. 12/4

11:21 am-11:09 pm

2 stops9h 48m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

  • Most accurate provider: When it comes to deals on Casper-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Casper-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Casper-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Casper-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Casper-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

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.

  • How long is the flight from Casper to Portland, Maine?

    A quick flight from Casper to Portland, Maine can take about 14h 43m. United Airlines provides one of the quickest options available for as low as $379. The distance between Casper and Portland, Maine is about 1804 mi.

  • 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.

See more FAQs

Traveling to a place near Portland?

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

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