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$399+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
CPR — PWM
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap 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 December 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/14. 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.
Wed 12/319:05 amCPR - PWM
2 stops12h 54mUnited Airlines
Thu 1/86:00 amPWM - CPR
2 stops15h 06mUnited Airlines
Deal found 12/14$424
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Wed 12/319:05 amCPR - PWM
2 stops12h 54mUnited Airlines
Mon 1/510:19 amPWM - CPR
2 stops14h 06mUnited Airlines
Deal found 12/14$494
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/296:10 pmCPR - PWM
2 stops13h 34mUnited Airlines
Thu 1/86:00 amPWM - CPR
2 stops15h 06mUnited Airlines
Deal found 12/14$534
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/296:10 pmCPR - PWM
2 stops13h 34mUnited Airlines
Fri 1/25:30 amPWM - CPR
2 stops15h 31mUnited Airlines
Deal found 12/14$539
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Sun 12/285:30 amCPR - PWM
2 stops16h 29mUnited Airlines
Thu 1/86:00 amPWM - CPR
2 stops15h 06mUnited Airlines
Deal found 12/14$584
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Wed 12/315:30 amCPR - PWM
2 stops16h 29mUnited Airlines
Sun 1/47:30 pmPWM - CPR
2 stops27h 11mUnited Airlines
Deal found 12/14$588
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Wed 12/315:30 amCPR - PWM
2 stops16h 29mUnited Airlines
Sat 1/35:30 amPWM - CPR
2 stops15h 31mUnited Airlines
Deal found 12/14$609
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Sun 12/285:30 amCPR - PWM
2 stops16h 29mUnited Airlines
Mon 1/510:19 amPWM - CPR
2 stops14h 06mUnited Airlines
Deal found 12/14$654
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/297:00 amCPR - PWM
2 stops14h 22mUnited Airlines
Sat 1/35:30 amPWM - CPR
2 stops15h 31mUnited Airlines
Deal found 12/14$720
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/297:00 amCPR - PWM
2 stops14h 22mUnited Airlines
Sun 1/45:30 amPWM - CPR
2 stops15h 31mUnited Airlines
Deal found 12/14$759
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Sat 12/277:00 amCPR - PWM
2 stops12h 29mUnited Airlines
Thu 1/15:30 amPWM - CPR
2 stops13h 29mUnited Airlines
Deal found 12/13$769

Find 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 December 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$399
(United Airlines)
Provider with most accurate pricing for Casper Natrona County-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Casper Natrona County-Portland flights.
Search Deals
From Casper Natrona County to Portland
Search Deals

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 December 15, 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

Fri 1/23

6:04 pm-9:01 am

2 stops12h 57m

Portland

Tue 1/27

11:12 am-10:14 pm

2 stops13h 02m

$399

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

Wed 12/31

9:05 am-11:59 pm

2 stops12h 54m

Portland

Mon 1/5

10:19 am-10:25 pm

2 stops14h 06m

$494

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

Wed 12/31

5:30 am-11:59 pm

2 stops16h 29m

Portland

Tue 1/6

6:00 am-8:40 pm

2 stops16h 40m

$494

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

Tue 12/30

6:10 pm-9:44 am

2 stops13h 34m

Portland

Thu 1/8

6:00 am-7:06 pm

2 stops15h 06m

$534

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

Mon 12/29

6:10 pm-9:44 am

2 stops13h 34m

Portland

Thu 1/8

6:00 am-7:06 pm

2 stops15h 06m

$534

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

Thu 1/1

6:10 pm-2:40 pm

2 stops18h 30m

Portland

Thu 1/8

6:00 am-7:06 pm

2 stops15h 06m

$548

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

Wed 12/31

5:30 am-11:59 pm

2 stops16h 29m

Portland

Sun 1/4

7:30 pm-8:41 pm

2 stops27h 11m

$588

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

Mon 12/29

6:10 pm-9:44 am

2 stops13h 34m

Portland

Mon 1/5

10:19 am-10:25 pm

2 stops14h 06m

$604

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

Mon 12/29

6:10 pm-9:44 am

2 stops13h 34m

Portland

Tue 1/6

6:00 am-7:06 pm

2 stops15h 06m

$604

CasperPortland

CPR - PWM

CPRPWM

Casper Natrona County

Tue 12/30

6:10 pm-9:44 am

2 stops13h 34m

Portland

Mon 1/5

10:19 am-10:25 pm

2 stops14h 06m

$604

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

  • 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 12h 57m. United Airlines provides one of the quickest options available for as low as $399. 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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