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$438+ Cheap flights from Boston to Casper (BOS - 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CPR
Jun 20 — Jun 271
Sat 6/20
Sat 6/27
1 adult, Economy
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Cheap flight deals from Boston to Casper

Cheapest flights from Boston to Casper
Explore the most affordable flight options available from Boston to Casper. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 21, 2026.

This United Airlines deal was found by Cheapflights users on 5/20. 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.
Thu 10/19:10 am
BOS
-
CPR
1 stop11h 54m
United Airlines
Wed 10/76:05 pm
CPR
-
BOS
1 stop9h 53m
United Airlines
Deal found 5/20$438
This United Airlines deal was found by Cheapflights users on 5/18. 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 8/225:45 am
BOS
-
CPR
2 stops13h 33m
United Airlines
Mon 8/3111:24 am
CPR
-
BOS
1 stop10h 30m
United Airlines
Deal found 5/18$444
This United Airlines deal was found by Cheapflights users on 5/20. 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 7/89:40 am
BOS
-
CPR
1 stop11h 30m
United Airlines
Tue 7/146:13 pm
CPR
-
BOS
1 stop9h 45m
United Airlines
Deal found 5/20$499
This United Airlines deal was found by Cheapflights users on 5/20. 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 7/77:19 am
BOS
-
CPR
2 stops15h 07m
United Airlines
Tue 7/146:13 pm
CPR
-
BOS
1 stop9h 45m
United Airlines
Deal found 5/20$504
This United Airlines deal was found by Cheapflights users on 5/20. 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 7/86:05 am
BOS
-
CPR
3 stops15h 05m
United Airlines
Wed 7/156:05 pm
CPR
-
BOS
2 stops12h 12m
United Airlines
Deal found 5/20$515
This United Airlines deal was found by Cheapflights users on 5/20. 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 7/108:39 pm
BOS
-
CPR
1 stop20h 01m
United Airlines
Wed 7/156:05 pm
CPR
-
BOS
1 stop9h 53m
United Airlines
Deal found 5/20$536
This United Airlines deal was found by Cheapflights users on 5/20. 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 7/108:39 pm
BOS
-
CPR
1 stop20h 01m
United Airlines
Tue 7/149:26 am
CPR
-
BOS
2 stops13h 48m
United Airlines
Deal found 5/20$542
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Thu 7/98:15 pm
BOS
-
CPR
2 stops14h 36m
United Airlines
Wed 7/156:05 pm
CPR
-
BOS
1 stop9h 53m
United Airlines
Deal found 5/20$546
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Thu 7/98:15 pm
BOS
-
CPR
2 stops14h 36m
United Airlines
Tue 7/146:13 pm
CPR
-
BOS
2 stops15h 03m
United Airlines
Deal found 5/20$551

Find flight deals from Boston to Casper

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 May 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$438
(United Airlines)
Provider with most accurate pricing for Boston Logan Intl-Casper Natrona County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Casper Natrona County flights.
Search Deals
From Boston Logan Intl to Casper Natrona County
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 May 21, 2026.
Use the filters below to find and compare flights from Boston to Casper that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonCasper

BOS - CPR

BOSCPR

Boston Logan Intl

Thu 10/1

9:10 am-7:04 pm

1 stop11h 54m

Casper Natrona County

Wed 10/7

6:05 pm-12:47 pm

2 stops16h 42m

$444

BostonCasper

BOS - CPR

BOSCPR

Boston Logan Intl

Wed 7/15

9:40 am-7:10 pm

1 stop11h 30m

Casper Natrona County

Sat 7/25

6:13 pm-9:29 am

2 stops13h 16m

$504

BostonCasper

BOS - CPR

BOSCPR

Boston Logan Intl

Fri 7/17

8:39 pm-8:51 am

1 stop14h 12m

Casper Natrona County

Wed 7/22

11:21 am-1:14 am

2 stops11h 53m

$542
Quickest round-trip

BostonCasper

BOS - CPR

BOSCPR

Boston Logan Intl

Wed 7/8

12:22 pm-8:33 pm

1 stop10h 11m

Casper Natrona County

Wed 7/15

6:05 pm-8:17 am

2 stops12h 12m

$554

BostonCasper

BOS - CPR

BOSCPR

Boston Logan Intl

Wed 6/3

10:35 am-9:59 pm

2 stops13h 24m

Casper Natrona County

Sun 6/7

6:13 pm-11:16 am

2 stops15h 03m

$594

BostonCasper

BOS - CPR

BOSCPR

Boston Logan Intl

Fri 6/12

8:39 pm-8:51 am

1 stop14h 12m

Casper Natrona County

Sun 6/14

6:13 pm-5:58 am

1 stop9h 45m

$597

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Sorted by cheapest first

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

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

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 May 21, 2026.
Read reviews from past customers who have flown United Airlines from Boston to Casper. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,748 reviews

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,748 reviews
United Airlines
7.4
Good
9,748 reviews

Overall

7.4

Entertainment

7.1

Food

6.6

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

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

    A quick flight from Boston to Casper can take about 11h 54m. United Airlines provides one of the quickest options available for as low as $444. The distance from Boston to Casper is about 1788 mi.

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

    Cheapflights users have booked flights from Boston to Casper round-trip from $323.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Boston to Casper

Discover the top airline that operate flights from Boston 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 May 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$323Average$518FlexibilityNo cancel feeOn-time69%

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