XML 110 R66.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Related Parties (Details) - Related Party $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 USD ($) director | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) director | Jun. 30, 2023 USD ($)
Indigo Partners |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Management fees, expense reimbursements, and director compensation (less than) | $ | $ 1 | $ 1 | $ 1 | $ 1
Controladora Vuela Compañía de Aviación, S.A.B. de C.V. |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Number of company directors | 2 |  | 2 |
Number of alternate company directors | 1 |  | 1 |

X
- Definition Number Of Alternate Company Directors On Related Party Board + References No definition available. + Details
Name: | fron_NumberOfAlternateCompanyDirectorsOnRelatedPartyBoard
Namespace Prefix: | fron_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Company Directors On Related Party Board + References No definition available. + Details
Name: | fron_NumberOfCompanyDirectorsOnRelatedPartyBoard
Namespace Prefix: | fron_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Costs of sales and operating expenses for the period incurred from transactions with related parties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_CostsAndExpensesRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(c)(2)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(c)(2)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(g)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_CounterpartyNameAxis=fron_IndigoPartnersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_RelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=fron_ControladoraVuelaCompaaDeAviacinSABDeCVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |