- 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:	skyw_AgreementsWithOtherAirlinesLineItems
Namespace Prefix:	skyw_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period of notice for termination of agreement.

+ References

No definition available.

+ Details

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

- Definition

Represents the number of additional aircrafts into service as per agreement.

+ References

No definition available.

+ Details

Name:	skyw_NumberOfAdditionalAircraftsIntoService
Namespace Prefix:	skyw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of agreed additional aircrafts into service as per agreement.

+ References

No definition available.

+ Details

Name:	skyw_NumberOfAgreedAdditionalAircraftsIntoService
Namespace Prefix:	skyw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of new aircrafts into service as per agreement.

+ References

No definition available.

+ Details

Name:	skyw_NumberOfNewAircraftsIntoService
Namespace Prefix:	skyw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the total number of aircrafts into service as per agreement.

+ References

No definition available.

+ Details

Name:	skyw_NumberOfTotalAircraftsIntoService
Namespace Prefix:	skyw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period of agreement entered into by the entity.

+ References

No definition available.

+ Details

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

- Definition

Number of aircraft operated by the carrier.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfAircraftOperated
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_TypeOfArrangementAxis=skyw_DeltaConnectionAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AircraftTypeAxis=us-gaap_CRJ200Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=skyw_SkyWestAirlinesIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=skyw_ExpressJetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AircraftTypeAxis=us-gaap_CRJ700Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AircraftTypeAxis=us-gaap_CRJ900Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AircraftTypeAxis=skyw_E175Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=skyw_DeltaConnectionProRateAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=skyw_UnitedExpressAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AircraftTypeAxis=skyw_ERJ145Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AircraftTypeAxis=skyw_Erj135Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=skyw_UnitedExpressProrateAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=skyw_AlaskaCapacityPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=skyw_AmericanAgreementPreviouslyUnderUSAirwaysAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=skyw_AmericanProRateAgreementPreviouslyUnderUSAirwaysProRateAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=skyw_AmericanCapacityPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=skyw_AmericanProrateAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Passenger and Ground Handling Revenue (Details)	1 Months Ended			9 Months Ended
Passenger and Ground Handling Revenue (Details)	Oct. 31, 2015 aircraft	Sep. 30, 2015 aircraft	Jun. 30, 2015 aircraft	Sep. 30, 2015 item
Delta Connection Agreements \| CRJ 200 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				48
Delta Connection Agreements \| CRJ 200 \| ExpressJet
Agreements with other airlines
Number of aircraft under contract				44
Delta Connection Agreements \| CRJ 700 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				19
Delta Connection Agreements \| CRJ 700 \| ExpressJet
Agreements with other airlines
Number of aircraft under contract				41
Delta Connection Agreements \| CRJ 900 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				36
Delta Connection Agreements \| CRJ 900 \| ExpressJet
Agreements with other airlines
Number of aircraft under contract				28
Delta Connection Agreements \| E 175
Agreements with other airlines
Number of new aircrafts into service \| aircraft	19
Delta Connection Pro-rate Agreement \| Sky West Airlines Inc
Agreements with other airlines
Notice period for termination of agreement				30 days
Delta Connection Pro-rate Agreement \| CRJ 200 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				14
United Express Agreements \| CRJ 200 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				50
United Express Agreements \| CRJ 700 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				70
United Express Agreements \| E 175
Agreements with other airlines
Number of additional aircrafts into service \| aircraft		18
Number of total aircrafts into service \| aircraft		58
United Express Agreements \| E 175 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				40
United Express Agreements \| ERJ 145 \| ExpressJet
Agreements with other airlines
Number of aircraft under contract				169
United Express Agreements \| ERJ135 \| ExpressJet
Agreements with other airlines
Number of aircraft under contract				5
United Express Prorate Agreement \| Sky West Airlines Inc
Agreements with other airlines
Notice period for termination of agreement				120 days
United Express Prorate Agreement \| CRJ 200 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				26
Alaska Capacity Purchase Agreement \| CRJ 700 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				9
Alaska Capacity Purchase Agreement \| E 175
Agreements with other airlines
Number of additional aircrafts into service \| aircraft			8
Number of agreed additional aircrafts into service \| aircraft			4
Number of total aircrafts into service \| aircraft			15
Alaska Capacity Purchase Agreement \| E 175 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				3
American Agreement Previously under US Airways Agreement \| CRJ 200 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				6
American Pro-rate Agreement Previously under US Airways Pro-rate Agreement \| CRJ 200 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				1
American Capacity Purchase Agreement \| CRJ 200 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				12
American Capacity Purchase Agreement \| CRJ 200 \| ExpressJet
Agreements with other airlines
Number of aircraft under contract				12
American Capacity Purchase Agreement \| ERJ 145 \| ExpressJet
Agreements with other airlines
Number of aircraft under contract				16
American Prorate Agreement \| Sky West Airlines Inc
Agreements with other airlines
Notice period for termination of agreement				120 days
American Prorate Agreement \| ExpressJet
Agreements with other airlines
Term of agreement				120 days
American Prorate Agreement \| CRJ 200 \| Sky West Airlines Inc
Agreements with other airlines
Number of aircraft under contract				5
American Prorate Agreement \| CRJ 200 \| ExpressJet
Agreements with other airlines
Number of aircraft under contract				2