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

United Airlines, at $308, was found to be the cheapest airline from Portland to Casper.. United Airlines is 29% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from Portland to Casper?

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

In terms of precipitation, rainfall in Casper ranges from 0.5 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. January is typically the driest time to visit Casper when rainfall is around 0.5 in.

If weather is an important factor for your trip to Casper, 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 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 23.0 F).

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

Travelers have found that booking a Thursday departure is the best way to save up to 73% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

What is the cheapest month to fly from Portland to Casper?

February is one of the best times of the year to fly to Casper from Portland. Prices for February average $435 per person but you can even find prices for as low as $238. The most expensive prices can be found in the month of March. Opting for a February flight can save you 114% on your journey compared to booking in March

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.

$308+ Flights from Portland to Casper

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Cheap flight deals from Portland to Casper

Round-trip from	$308 (United Airlines)
Popular in	March
Cheapest in	February
Average price	$482

From Portland to Casper Natrona County

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($57 potential increase over avg. RT price).

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Cheapest flight prices on average. 11% potential price decrease ($46 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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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 June 26, 2025.

Thu 10/210:50 amPDX - CPR

1 stop8h 27mUnited Airlines

Mon 10/61:32 pmCPR - PDX

1 stop8h 34mUnited Airlines

Deal found 6/24

$308

Best flights from Portland to Casper
Discover carefully curated flight deals from Portland to Casper that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 26, 2025.

Thu 10/210:50 amPDX - CPR

1 stop8h 27mUnited Airlines

Mon 10/61:32 pmCPR - PDX

1 stop8h 34mUnited Airlines

Deal found 6/24

$308

Last-minute flights from Portland to Casper
Discover last-minute flight deals from Portland to Casper. Data last updated June 26, 2025 and is based on user searches.

Sat 6/2812:55 pmPDX - CPR

1 stop8h 19mUnited Airlines

Tue 7/15:59 pmCPR - PDX

1 stop5h 17mUnited Airlines

Deal found 6/25

$519

Cheapflights Fare Finder

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

PortlandCasper

PDX - CPR

PDXCPR

Portland

Thu 10/2

10:50 am-8:17 pm

1 stop8h 27m

Casper Natrona County

Mon 10/6

1:32 pm-9:06 pm

1 stop8h 34m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

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, January is the cheapest month in which you can book a flight from Portland to Casper (average of $348). Flying from Portland to Casper in June is currently the most expensive (average of $508). 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.

What is the cheapest time of day to fly from PDX to CPR?

A simple way to save on the total cost of your ticket is to fly from Portland to Casper at noon. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight in the morning.

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

Reviews of airlines servicing Casper

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

8,838 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

8,838 reviews

United Airlines

7.4

Good

8,838 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 is the cheapest airline to fly from Portland to Casper round-trip?
United Airlines, at $308, was found to be the cheapest airline from Portland to Casper.. United Airlines is 29% 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, January is the cheapest month in which you can book a flight from Portland to Casper (average of $348). Flying from Portland to Casper in June is currently the most expensive (average of $508). 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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Alternative routes for Portland to Casper

Top 2 airlines flying from Portland to Casper

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$238	Average$303	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$238	Average$396	FlexibilityNo cancel fee	On-time69%

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$308+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Casper with Cheapflights

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Cheap flight deals from Portland to Casper

Round-trip from

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Find flight deals from Portland to Casper

Cheapest flights from Portland to CasperExplore 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 June 26, 2025.

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 June 26, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Casper that are best for you.

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.

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?

What is the cheapest time of day to fly from PDX to CPR?

Find hourly flight availability from Portland to Casper. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 26, 2025.

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 June 26, 2025.

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.

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.

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

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

How can I find direct flights from Portland to Casper?

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

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

Traveling to a place near Portland?

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Alternative routes for Portland to Casper

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Top 2 airlines flying from Portland to Casper

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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 June 26, 2025.