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$318+ Cheap flights from Portland to Casper (PDX - CPR)

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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CPR
May 5 — May 121
Tue 5/5
Tue 5/12
1 adult, Economy
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Cheap flight deals from Portland to Casper

Cheapest flights from Portland to Casper
Explore the most affordable flight options available from Portland to Casper. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 5, 2026.

This United Airlines deal was found by Cheapflights users on 4/5. 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 5/35:00 am
PDX
-
CPR
1 stop4h 48m
United Airlines
Sun 5/103:14 pm
CPR
-
PDX
1 stop6h 55m
United Airlines
Deal found 4/5$318
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Fri 4/174:15 pm
PDX
-
CPR
1 stop4h 52m
United Airlines
Fri 4/245:55 pm
CPR
-
PDX
1 stop5h 59m
United Airlines
Deal found 4/1$323
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/255:00 am
PDX
-
CPR
1 stop4h 47m
United Airlines
Wed 4/295:25 am
CPR
-
PDX
2 stops10h 05m
United Airlines
Deal found 4/1$324
This United Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 4/174:15 pm
PDX
-
CPR
1 stop4h 52m
United Airlines
Tue 4/215:25 am
CPR
-
PDX
1 stop5h 23m
United Airlines
Deal found 4/2$328
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Fri 5/15:00 am
PDX
-
CPR
1 stop8h 39m
United Airlines
Sun 5/35:25 am
CPR
-
PDX
1 stop5h 13m
United Airlines
Deal found 4/1$398
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/185:00 am
PDX
-
CPR
1 stop4h 47m
United Airlines
Wed 4/225:55 pm
CPR
-
PDX
1 stop5h 59m
United Airlines
Deal found 4/1$403
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Tue 4/285:00 am
PDX
-
CPR
1 stop6h 46m
United Airlines
Sat 5/25:25 am
CPR
-
PDX
2 stops8h 09m
United Airlines
Deal found 3/31$404
This United Airlines deal was found by Cheapflights users on 4/5. 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.
Tue 5/125:30 am
PDX
-
CPR
3 stops13h 47m
United Airlines
Tue 5/195:25 am
CPR
-
PDX
1 stop5h 13m
United Airlines
Deal found 4/5$409

Find flight deals from Portland to Casper

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Casper (CPR). 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 April 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$318
(United Airlines)

Popular in

October

Cheapest in

April

Average price

$264
Provider with most accurate pricing for Portland-Casper Natrona County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Casper Natrona County flights.
Search Deals
From Portland to Casper Natrona County
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Casper 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 April 5, 2026.
Use the filters below to find and compare flights from Portland to Casper that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandCasper

PDX - CPR

PDXCPR

Portland

Fri 4/17

4:15 pm-10:07 pm

1 stop4h 52m

Casper Natrona County

Fri 4/24

5:55 pm-10:54 pm

1 stop5h 59m

$323

PortlandCasper

PDX - CPR

PDXCPR

Portland

Sun 5/3

5:00 am-10:48 am

1 stop4h 48m

Casper Natrona County

Sun 5/10

5:25 am-12:35 pm

2 stops8h 10m

$324

PortlandCasper

PDX - CPR

PDXCPR

Portland

Fri 5/1

5:00 am-2:39 pm

1 stop8h 39m

Casper Natrona County

Sun 5/3

5:25 am-9:38 am

1 stop5h 13m

$398

PortlandCasper

PDX - CPR

PDXCPR

Portland

Tue 4/28

5:00 am-10:47 am

1 stop4h 47m

Casper Natrona County

Sat 5/2

9:00 am-5:44 pm

1 stop9h 44m

$398
Quickest round-trip

PortlandCasper

PDX - CPR

PDXCPR

Portland

Sat 4/18

5:00 am-10:47 am

1 stop4h 47m

Casper Natrona County

Wed 4/22

5:55 pm-10:54 pm

1 stop5h 59m

$403

PortlandCasper

PDX - CPR

PDXCPR

Portland

Fri 5/1

5:00 am-2:39 pm

1 stop8h 39m

Casper Natrona County

Mon 5/4

5:25 am-4:33 pm

2 stops12h 08m

$449

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Sorted by cheapest first

Compare providers for flights from Portland to Casper

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Casper in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Casper flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Casper flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Casper flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Casper 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 Portland-Casper 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 Portland to Casper

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

Cheapflights Insights

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

What is the cheapest month to book a flight from Portland to Casper?

Currently, May is the cheapest month in which you can book a flight from Portland to Casper (average of $160). Flying from Portland to Casper in August is currently the most expensive (average of $553). 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.

How much does it cost to fly round-trip from Portland to Casper?

Reviews of airlines servicing Casper

Get insights into the airlines that provide service to Casper. 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 Casper. Reviews last updated April 5, 2026.
Get a feel of what it's like to fly with United Airlines from Portland to Casper by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,545 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,545 reviews
United Airlines
7.4
Good
9,545 reviews

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Portland to Casper. 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 Portland to Casper?

    Airlines like United Airlines fly from Portland to Casper in about 4h 52m. The time it takes to get you to your destination can typically vary by up to . Portland and Casper are separated by a distance of 817 mi.

  • What is the cheapest airline to fly from Portland to Casper round-trip?

    United Airlines, at $238, was found to be the cheapest airline from Portland to Casper.. United Airlines is 41% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Portland to Casper (average of $160). Flying from Portland to Casper in August is currently the most expensive (average of $553). 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Portland to Casper

Discover the top airline that operate flights from Portland to Casper. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$238Average$343FlexibilityNo cancel feeOn-time69%

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