Leases, Commitments, Guarantees and Contingencies - Guarantees (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($)
Other income, net
Leases, Commitments, Guarantees and Contingencies
Guaranteed amount received as consideration, percentage	6.50%
Debt \| Aircraft and engines
Leases, Commitments, Guarantees and Contingencies
Guaranteed amount	$ 19.8
Term of guarantee obligations	5 years

Period of guarantee, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

+ Details

Name:	skyw_GuarantorObligationsTermPeriod
Namespace Prefix:	skyw_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of guaranteed amount received as consideration.

+ References

No definition available.

+ Details

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Namespace Prefix:	skyw_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_GuaranteeObligationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

Name:	us-gaap_UnderlyingAssetClassAxis=skyw_AircraftAndEnginesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: