# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001670076-26-000020
Filing Date
2026-02-18
Accepted
2026-02-18 16:09:38
Documents
123
Period of Report
2025-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | fron-20251231.htm iXBRL | 10-K | 2377466
2 | EX-10.17(F) | ex1017fbarclays5thamendmen.htm | EX-10.17(F) | 14315
3 | EX-10.22(C) | ex1022cfrontierpdp-elevent.htm | EX-10.22(C) | 1025904
4 | EX-10.22(D) | ex1022dfft-stepxinagreemen.htm | EX-10.22(D) | 423867
5 | EX-10.24(C) | ex1024cfrontierloyalty-ame.htm | EX-10.24(C) | 45412
6 | EX-10.24(D) | ex1024dfrontierrcf-increas.htm | EX-10.24(D) | 41733
7 | EX-10.25(A) | ex1025afirstamendmenttomsa.htm | EX-10.25(A) | 20624
8 | EX-10.27(F) | ex1027fcodeshareamendment5.htm | EX-10.27(F) | 14876
9 | EX-10.37 | ex1037frontier2025eetc-tru.htm | EX-10.37 | 551654
10 | EX-21.1 | ex211listofsubsidiariesq42.htm | EX-21.1 | 4105
11 | EX-23.1 | ex231consentofindependentr.htm | EX-23.1 | 4109
12 | EX-31.1 | ex311q42025.htm | EX-31.1 | 8691
13 | EX-31.2 | ex312q42025.htm | EX-31.2 | 8728
14 | EX-32.1 | ex321q42025.htm | EX-32.1 | 5219
15 | EX-32.2 | ex322q42025.htm | EX-32.2 | 5169
21 |  | fron-20251231_g1.jpg | GRAPHIC | 20548
22 |  | fron-20251231_g2.jpg | GRAPHIC | 717970
23 |  | fron-20251231_g3.jpg | GRAPHIC | 90816
24 |  | image_0.jpg | GRAPHIC | 15478
25 |  | image_0a.jpg | GRAPHIC | 14502
26 |  | image_1a.jpg | GRAPHIC | 20487
27 |  | image_2.jpg | GRAPHIC | 14772
| Complete submission text file | 0001670076-26-000020.txt |  | 15110439

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
16 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | fron-20251231.xsd | EX-101.SCH | 75371
17 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | fron-20251231_cal.xml | EX-101.CAL | 116114
18 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | fron-20251231_def.xml | EX-101.DEF | 283347
19 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | fron-20251231_lab.xml | EX-101.LAB | 869929
20 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | fron-20251231_pre.xml | EX-101.PRE | 607243
126 | EXTRACTED XBRL INSTANCE DOCUMENT | fron-20251231_htm.xml | XML | 1394760

Mailing Address 4545 AIRPORT WAY DENVER CO 80239
Business Address 4545 AIRPORT WAY DENVER CO 80239 (720) 374-4490
Frontier Group Holdings, Inc. (Filer) CIK: 0001670076 (see all company filings)

EIN.: 463681866 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-40304 | Film No.: 26648323
SIC: 4512 Air Transportation, Scheduled
(CF Office: 01 Energy & Transportation)