Which airports can I use when flying from Seattle to Casper?

Flights from Seattle to Casper usually depart from Seattle/Tacoma Intl (SEA) and arrive at Casper Natrona County (CPR).

What cabin classes can I book on flights from Seattle to Casper?

Only Economy Class is available on flights from Seattle to Casper.

Which airports do connecting flights from Seattle to Casper pass through?

Most connecting flights from Seattle to Casper pass through Denver Intl (DEN), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

Can I save money by using flexible dates for flights from Seattle to Casper?

Yes. Being flexible with your travel dates can save you up to 45% on the Seattle to Casper route. Monday is the cheapest departure day at $343 round-trip on average, while Sunday is the most expensive at $618, a difference of $275. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Do I need a passport to fly from Seattle to Casper?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from Seattle to Casper changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $308 to $1,568. That means the highest observed fare was about 5x higher than the lowest one.

How are flight prices from Seattle to Casper looking right now?

One-way fares from Seattle to Casper are currently lower than usual. Average one-way flight prices are about $373, which is 10% below the typical average for this route.

What is the time difference between Seattle and Casper?

Casper is 1 hour ahead of Seattle (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Casper Natrona County Airport (CPR)?

Casper Natrona County Airport (CPR) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include: • Budget • Hertz • Avis • Enterprise Rent-A-Car • Alamo

How much should I expect to pay for a Seattle to Casper flight?

Round-trip flights from Seattle to Casper range from $393 to $536, with an average of $432 over the past 12 months. Anything below $393 counts as a good deal.

What is the cheapest airline to fly from Seattle to Casper?

United Airlines ($308) offered the cheapest round-trip ticket from Seattle to Casper in the last 5 days.

What is the cheapest layover airport when flying from Seattle to Casper?

Flights via Denver Intl (DEN) offer the most affordable fares, with an average round-trip price of $451. Based on KAYAK data over the past 3 months.

When flying from Seattle to Casper which airport offers the shortest layover?

Denver Intl (DEN) had the shortest average connection time for Seattle to Casper layovers at 211 minutes over the past 3 months.

$268 CHEAP FLIGHTS from Seattle to Casper (SEA - CPR)

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Cheapest round-trip

$308

Typical prices: $393-$536

United Airlines

Mon 10/22Mon 10/29

SEA - CPR • 1 stop

Cheapest one-way

$268

Typical prices: $269-$478

United Airlines

Mon 10/1

SEA - CPR • 1 stop

When to travel

January

Cheapest • 21% price drop

April

Most popular

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We hope you love your trip to Casper!

Flight Deals

Cheap Flights from Seattle to Casper (SEA-CPR)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Seattle to Casper

Thu, Oct 22 - Thu, Oct 29

5:00 am - 12:39 pmSEA Seattle/Tacoma Intl-CPR Casper Natrona County

6h 39m1 stop Denver Intl

5:57 pm - 11:15 pmCPR Casper Natrona County-SEA Seattle/Tacoma Intl

6h 18m1 stop Denver Intl

$308United Airlines

Thu, Oct 1 - Mon, Oct 5

12:43 pm - 6:54 pmSEA Seattle/Tacoma Intl-CPR Casper Natrona County

5h 11m1 stop Denver Intl

6:00 pm - 10:59 pmCPR Casper Natrona County-SEA Seattle/Tacoma Intl

5h 59m1 stop Denver Intl

$308United Airlines

Thu, Oct 1 - Mon, Oct 5

2:27 pm - 8:17 pmSEA Seattle/Tacoma Intl-CPR Casper Natrona County

4h 50m1 stop Denver Intl

1:20 pm - 9:59 pmCPR Casper Natrona County-SEA Seattle/Tacoma Intl

9h 39m2 stops Denver Intl Los Angeles

$314United Airlines

Thu, Oct 22 - Thu, Oct 29

5:00 am - 10:48 amSEA Seattle/Tacoma Intl-CPR Casper Natrona County

4h 48m1 stop Denver Intl

1:29 pm - 9:50 pmCPR Casper Natrona County-SEA Seattle/Tacoma Intl

9h 21m2 stops Denver Intl Los Angeles

$314United Airlines

Tue, Oct 13 - Tue, Oct 20

5:00 am - 12:39 pmSEA Seattle/Tacoma Intl-CPR Casper Natrona County

6h 39m1 stop Denver Intl

5:15 am - 10:01 amCPR Casper Natrona County-SEA Seattle/Tacoma Intl

5h 46m1 stop Denver Intl

$328United Airlines

Fri, Jan 8 - Sun, Jan 10

8:30 am - 5:04 pmSEA Seattle/Tacoma Intl-CPR Casper Natrona County

7h 34m1 stop Denver Intl

1:25 pm - 9:56 pmCPR Casper Natrona County-SEA Seattle/Tacoma Intl

9h 31m2 stops Denver Intl Los Angeles

$334United Airlines

Tue, Oct 13 - Tue, Oct 20

5:00 am - 10:48 amSEA Seattle/Tacoma Intl-CPR Casper Natrona County

4h 48m1 stop Denver Intl

10:06 am - 7:29 pmCPR Casper Natrona County-SEA Seattle/Tacoma Intl

10h 23m2 stops Denver Intl Los Angeles

$334United Airlines

Fri, Nov 20 - Sun, Nov 29

5:05 am - 10:49 amSEA Seattle/Tacoma Intl-CPR Casper Natrona County

4h 44m1 stop Denver Intl

9:10 pm - 2:32 amCPR Casper Natrona County-SEA Seattle/Tacoma Intl

6h 22m1 stop Denver Intl

$342United Airlines

Fri, Nov 20 - Sun, Nov 29

5:05 am - 10:49 amSEA Seattle/Tacoma Intl-CPR Casper Natrona County

4h 44m1 stop Denver Intl

9:10 pm - 2:32 amCPR Casper Natrona County-SEA Seattle/Tacoma Intl

6h 22m1 stop Denver Intl

$351United Airlines

Fri, Jan 8 - Sun, Jan 10

5:07 am - 12:35 pmSEA Seattle/Tacoma Intl-CPR Casper Natrona County

6h 28m1 stop Denver Intl

9:10 am - 1:20 pmCPR Casper Natrona County-SEA Seattle/Tacoma Intl

5h 10m1 stop Denver Intl

$356United Airlines

Booking Insights

Price, demand and travel trends for Seattle to Casper flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Seattle to Casper with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Seattle to Casper?

Round-trip flights from Seattle to Casper start at $308. Prices are below average for this route right now, with typical round-trip fares ranging from $393 to $536. The lowest price found in the past 5 days was $308 on United Airlines.

What's the cheapest day of the week to fly from Seattle to Casper?

Monday is the cheapest day of the week to fly from Seattle to Casper, it is 21% cheaper than the average day. Sunday is the most expensive day with flight prices 43% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

January is the cheapest month to fly from Seattle to Casper at $343 round-trip.
December ($780) and August ($577) are the most expensive months.
The price difference between flying in the cheapest and most expensive months is 127% on average.

This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Low season	July
High season	April
Cheapest flight	$268

Best time to beat the crowds but there is an average 18% increase in price.

Most popular time to fly with an average 13% increase in price.

Flight from Seattle to Casper

When to book flights from Seattle to Casper

Are your dates flexible? Find out the best times to travel from Seattle to Casper based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from Seattle to Casper?
Flights from Seattle to Casper usually depart from Seattle/Tacoma Intl (SEA) and arrive at Casper Natrona County (CPR).
What cabin classes can I book on flights from Seattle to Casper?
Only Economy Class is available on flights from Seattle to Casper.
Which airports do connecting flights from Seattle to Casper pass through?
Most connecting flights from Seattle to Casper pass through Denver Intl (DEN), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.
Can I save money by using flexible dates for flights from Seattle to Casper?
Yes. Being flexible with your travel dates can save you up to 45% on the Seattle to Casper route. Monday is the cheapest departure day at $343 round-trip on average, while Sunday is the most expensive at $618, a difference of $275. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
Do I need a passport to fly from Seattle to Casper?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
Have flight prices from Seattle to Casper changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $308 to $1,568. That means the highest observed fare was about 5x higher than the lowest one.
How are flight prices from Seattle to Casper looking right now?
One-way fares from Seattle to Casper are currently lower than usual. Average one-way flight prices are about $373, which is 10% below the typical average for this route.
What is the time difference between Seattle and Casper?
Casper is 1 hour ahead of Seattle (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Casper Natrona County Airport (CPR)?
Casper Natrona County Airport (CPR) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
• Budget
• Hertz
• Avis
• Enterprise Rent-A-Car
• Alamo
How much should I expect to pay for a Seattle to Casper flight?
Round-trip flights from Seattle to Casper range from $393 to $536, with an average of $432 over the past 12 months. Anything below $393 counts as a good deal.

If your dates can be flexible, aim for a Monday departure instead of Sunday. On this route, Monday flights average $343 - about $275 less than Sunday (44% savings) based on the last 12 months.
If you can choose when to travel, plan your Seattle to Casper trip for January. Fares historically average $343 round-trip in that month - typically $437 less than the most expensive month, which is December (based on the last 12 months).

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SEA - CPR

$268 Find Cheap Flights from Seattle to Casper - Compare and Save

Everything you should know

Cheap Flights from Seattle to Casper (SEA-CPR)

Recent round-trip flight deals from Seattle to Casper

Recent one-way flight deals from Seattle to Casper

Price, demand and travel trends for Seattle to Casper flights

How much is a round-trip flight from Seattle to Casper?

What's the cheapest day of the week to fly from Seattle to Casper?

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

What is the cheapest airline to fly from Seattle to Casper?

What is the cheapest layover airport when flying from Seattle to Casper?

When flying from Seattle to Casper which airport offers the shortest layover?

Key details for Seattle to Casper flights

Low season

High season

Cheapest flight

When to book flights from Seattle to Casper

Your Seattle to Casper flight questions, answered

Your guide to booking Seattle to Casper flights

More options for your flight from Seattle to Casper

Complete your trip to Casper with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Seattle to Casper

Find direct flights to and from Seattle and Casper

Flights from domestic origins to Casper

Flights to other popular destinations

Find deals for your return flight