When did momondo last update prices for flights from Portland Airport to Casper Natrona County Airport?

Prices for flights from Portland Airport to Casper Natrona County Airport refresh daily.

How many operators does momondo search for flights from Portland Airport to Casper Natrona County Airport?

There are 2 operators available for flights from Portland Airport to Casper Natrona County Airport as of September 2025.

How old do you have to be to fly from Portland Airport to Casper Natrona County Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Casper Natrona County Airport.

What documentation or ID do you need to fly to Casper Natrona County Airport?

The travel and health documents you'll need for your trip to Casper Natrona County Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Casper Natrona County Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$237 Cheap Flights from Portland to Casper in 2025/26

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Find the cheapest flights from Portland to Casper

Round-trip

One-way

Cheap round-trip flights

4:02 pm - 9:58 pmPDX-CPR

4h 56m1 stop

5:30 am - 9:38 amCPR-PDX

5h 08m1 stop

$255United Airlines

Find Deal

Fri, Nov 7 - Tue, Nov 18

5:00 am - 10:45 amPDX-CPR

4h 45m1 stop

9:03 am - 8:38 pmCPR-PDX

12h 35m2 stops

$260United Airlines

Find Deal

Fri, Nov 7 - Tue, Nov 18

1:24 pm - 10:14 pmPDX-CPR

7h 50m1 stop

5:30 am - 9:45 amCPR-PDX

5h 15m1 stop

$308United Airlines

Find Deal

Wed, Jan 28 - Wed, Feb 4

5:00 am - 10:53 amPDX-CPR

4h 53m1 stop

11:28 am - 11:06 pmCPR-PDX

12h 38m2 stops

$314United Airlines

Find Deal

Wed, Jan 28 - Wed, Feb 4

1:35 pm - 10:14 pmPDX-CPR

7h 39m2 stops

11:28 am - 11:06 pmCPR-PDX

12h 38m2 stops

$319United Airlines

Find Deal

Wed, Jan 28 - Wed, Feb 4

1:35 pm - 10:14 pmPDX-CPR

7h 39m2 stops

11:28 am - 11:06 pmCPR-PDX

12h 38m2 stops

$349United Airlines

Find Deal

Thu, Jan 29 - Wed, Feb 4

5:00 am - 10:47 amPDX-CPR

4h 47m1 stop

6:00 pm - 9:30 amCPR-PDX

16h 30m1 stop

$427United Airlines

Find Deal

Mon, Sep 29 - Fri, Oct 3

5:30 am - 8:17 pmPDX-CPR

13h 47m3 stops

3:12 pm - 9:30 amCPR-PDX

19h 18m1 stop

$437United Airlines

Find Deal

Mon, Sep 29 - Fri, Oct 3

5:00 am - 10:45 amPDX-CPR

4h 45m1 stop

6:05 pm - 9:38 amCPR-PDX

16h 33m1 stop

$531United Airlines

Find Deal

Thu, Nov 27 - Sun, Nov 30

5:00 am - 10:47 amPDX-CPR

4h 47m1 stop

5:30 am - 12:42 pmCPR-PDX

8h 12m2 stops

$638United Airlines

Find Deal

Mon, Sep 29 - Fri, Oct 3

United Airlines flights from Portland to Casper

Our best United Airlines deals on Portland to Casper flight tickets

United Airlines

Nov 7

PDX4:02 pmPortland

4h 56m

1 stop

CPR9:58 pmCasper Natrona County

Nov 18

CPR5:30 amCasper Natrona County

5h 08m

1 stop

PDX9:38 amPortland

$255

Find similar

United Airlines

Nov 7

PDX5:00 amPortland

4h 45m

1 stop

CPR10:45 amCasper Natrona County

Nov 18

CPR9:03 amCasper Natrona County

12h 35m

2 stops

PDX8:38 pmPortland

$260

Find similar

United Airlines

Jan 28

PDX1:24 pmPortland

7h 50m

1 stop

CPR10:14 pmCasper Natrona County

Feb 4

CPR5:30 amCasper Natrona County

5h 15m

1 stop

PDX9:45 amPortland

$308

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandCasper

PDX - CPR

PDXCPR

Portland

Fri 11/7

4:02 pm-9:58 pm

1 stop4h 56m

Casper Natrona County

Tue 11/18

5:30 am-9:38 am

1 stop5h 08m

$255

PortlandCasper

PDX - CPR

PDXCPR

Portland

Fri 11/7

5:00 am-10:45 am

1 stop4h 45m

Casper Natrona County

Tue 11/18

9:03 am-8:38 pm

2 stops12h 35m

$260

PortlandCasper

PDX - CPR

PDXCPR

Portland

Wed 1/28

1:24 pm-10:14 pm

1 stop7h 50m

Casper Natrona County

Wed 2/4

5:30 am-9:45 am

1 stop5h 15m

$308

PortlandCasper

PDX - CPR

PDXCPR

Portland

Wed 1/28

5:00 am-10:53 am

1 stop4h 53m

Casper Natrona County

Wed 2/4

11:28 am-11:06 pm

2 stops12h 38m

$314

PortlandCasper

PDX - CPR

PDXCPR

Portland

Wed 1/28

1:35 pm-10:14 pm

2 stops7h 39m

Casper Natrona County

Wed 2/4

11:28 am-11:06 pm

2 stops12h 38m

$319

PortlandCasper

PDX - CPR

PDXCPR

Portland

Thu 1/29

1:35 pm-10:14 pm

2 stops7h 39m

Casper Natrona County

Wed 2/4

11:28 am-11:06 pm

2 stops12h 38m

$349

PortlandCasper

PDX - CPR

PDXCPR

Portland

Mon 9/29

5:00 am-10:47 am

1 stop4h 47m

Casper Natrona County

Fri 10/3

6:00 pm-9:30 am

1 stop16h 30m

$427

PortlandCasper

PDX - CPR

PDXCPR

Portland

Mon 9/29

5:30 am-8:17 pm

3 stops13h 47m

Casper Natrona County

Fri 10/3

3:12 pm-9:30 am

1 stop19h 18m

$437

PortlandCasper

PDX - CPR

PDXCPR

Portland

Thu 11/27

5:00 am-10:45 am

1 stop4h 45m

Casper Natrona County

Sun 11/30

6:05 pm-9:38 am

1 stop16h 33m

$531

PortlandCasper

PDX - CPR

PDXCPR

Portland

Mon 9/29

5:00 am-10:47 am

1 stop4h 47m

Casper Natrona County

Fri 10/3

5:30 am-12:42 pm

2 stops8h 12m

$638

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Portland to Casper

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Casper?

In general, February is the cheapest month to fly from Portland to Casper. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $238. If you aren’t able to travel during the month of February, then book flights to Casper from Portland during April instead. Flights to Casper in April, while not as cheap as those in February, still average around $308.

What is the cheapest day to depart on your flight to Casper?

The cheapest day to depart from Portland to Casper is on a Friday when prices can be found for as low as $300. The most expensive day to fly to Casper is Sunday, with ticket prices averaging around $520.

What is the cheapest time of day to depart on your flight to Casper?

The cheapest time of day to fly to Casper is in the afternoon when flights can be purchased for as low as $323. Flights to Casper are more costly in the morning, with an average ticket price of $398. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Portland to Casper

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Casper according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Casper (PDX to CPR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Casper

Direct flights	None

There are no direct flights from Portland to Casper. There are no popular flight routes from Portland to Casper.

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How far is Portland to Casper Natrona County by plane?
The straight-line distance from Portland to Casper Natrona County is 828.7 mi. By plane, this route typically takes 4h 45m.
When did momondo last update prices for flights from Portland Airport to Casper Natrona County Airport?
Prices for flights from Portland Airport to Casper Natrona County Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to Casper Natrona County Airport?
There are 2 operators available for flights from Portland Airport to Casper Natrona County Airport as of September 2025.
How old do you have to be to fly from Portland Airport to Casper Natrona County Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Casper Natrona County Airport.
What documentation or ID do you need to fly to Casper Natrona County Airport?
The travel and health documents you'll need for your trip to Casper Natrona County Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Casper Natrona County Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland to Casper?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Casper is United Airlines (82% of total bookings). The next most popular airline is Delta (18%).

Best airlines flying from Portland to Casper

Compare and see reviews for airlines that fly from Portland to Casper with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $238	Free Cancellation	Rating 7.9 7,954 reviews		Search Delta flights
United Airlines	PriceFrom $238	Free Cancellation	Rating 7.4 8,929 reviews		Search United Airlines flights

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Yes momondo offers price alerts on flights to Casper from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.