Frontier Airlines 401(k) and pension plans

Frontier Airlines, Inc., Denver, CO. EIN 84-1256945. Annual reports 2009–2025. Also filed as Mesa Air Group, Inc.; Mesa Air Group Inc; Republic Airways Holdings Inc.; Republic Airways Holdings, Inc.

Frontier Airlines, Inc. has 2 active retirement plans on file. The largest is the Republic Airways Holdings Inc. 401(k) Plan, with 8,605 participants and $688 million in assets in 2025. Schwab has been its recordkeeper since 2018.

Active plans: 2
Participants: 17,494
Plan assets: $1.7 billion
401(k) recordkeeper: Schwab
Plans on file: 4
Industry: Transportation and warehousing

All 4 plans

Active plans first

Republic Airways Holdings Inc. 401(k) Plan

401(k)Active

Active. The plan filed its annual report for the 2025 plan year.

Plan number: 001Employer EIN 85-0302351
Participants (2025): 8,605
Net assets (2025): $688 million
Recordkeeper: SchwabEarlier: Nationwide (2009–2010)
Plan administrator: Republic Airways Holdings Inc.
2 Brickyard Lane
Carmel, IN 46032
(317) 471-2344As filed for 2025
In effect since: February 1, 1978

Plans merged into this one: Frontier Airlines Holdings, Inc. Retirement Savings Plan (2010); Midwest Airlines Retirement Account Plan (2012).

Earlier sponsor: Mesa Air Group, Inc. (2009–2021).

Earlier plan names: Mesa Air Group, Inc. 401(k) Plan; Mesa Air Group, Inc. 401K Plan; Mesa Air Group Inc 401K Plan.

Year by year, 2009 to 2025

Plan year	Participants	Net assets	Recordkeeper
2025	8,605	$688 million	Schwab
2024	8,136	$578 million	Schwab
2023	7,715	$479 million	Schwab
2022	8,032	$379 million	Schwab
2021	4,090	$115 million	not listed
2020	6,862	$374 million	Schwab
2019	7,606	$321 million	Schwab
2018	7,087	$242 million	Schwab
2017	3,554	$80.2 million	not listed
2016	3,509	$70.4 million	not listed
2015	3,352	$63.0 million	not listed
2014	2,395	$56.9 million	not listed
2013	1,917	$57.0 million	not listed
2012	2,289	$51.6 million	not listed
2011	2,642	$44.7 million	not listed
2010	2,084	$37.3 million	Nationwide
2009	2,965	$39.6 million	Nationwide

Frontier Airlines, Inc. 401(k) Retirement Plan

401(k)Active

Active. The plan filed its annual report for the 2024 plan year.

Plan number: 003Employer EIN 84-1256945
Participants (2024): 8,889
Net assets (2024): $962 million
Recordkeeper: SchwabEarlier: Principal (2010–2013), Fidelity (2009)
Plan administrator: Frontier Airlines, Inc.
4545 Airport Way
Denver, CO 80239
(720) 374-4504As filed for 2024
In effect since: March 2, 2007

Earlier sponsor: Republic Airways Holdings, Inc (2009–2012).

Earlier plan names: Frontier Airlines, Inc. Pilots' Retirement Plan.

Year by year, 2009 to 2024

Plan year	Participants	Net assets	Recordkeeper
2024	8,889	$962 million	Schwab
2023	8,137	$794 million	Schwab
2022	7,201	$620 million	Schwab
2021	6,201	$662 million	Schwab
2020	5,587	$545 million	Schwab
2019	5,570	$434 million	Schwab
2018	4,870	$320 million	Schwab
2017	4,281	$324 million	Schwab
2016	4,018	$261 million	Schwab
2015	3,639	$235 million	Schwab
2014	4,479	$231 million	Schwab
2013	4,981	$212 million	Principal
2012	663	$24.9 million	Principal
2011	682	$18.2 million	Principal
2010	698	$14.5 million	Principal
2009	645	$9.3 million	Fidelity

Republic Airways Holdings Inc. Supplemental Pension Plan for Former Midwest Pilots

Pension (defined benefit), frozenClosed

Closed. The plan filed its final annual report for 2020, which means its assets were paid out or moved and it no longer exists.

Plan number: 005Employer EIN 06-1449146
Participants (2019): 109
Net assets (2019): $12.5 million
Administered by: SchwabEarlier: Principal (2009–2012)
Plan administrator: Republic Airways Holdings Inc.
8909 Purdue RD Suite 300
Indianapolis, IN 46268
(317) 484-6000As filed for 2020
In effect since: April 1, 2007

Earlier sponsors: Republic Airways (2009–2010); Midwest Airlines, Inc. (2011–2016).

Earlier plan names: Midwest Airlines Pilots Supplemental Retirement Plan; Midwest Airlines, Inc. Pilots' Supplemental Pension Plan.

Year by year, 2009 to 2020

Plan year	Participants	Net assets	Recordkeeper
2020	0	$0	Schwab
2019	109	$12.5 million	Schwab
2018	113	$11.5 million	Schwab
2017	121	$13.5 million	Schwab
2016	123	$12.7 million	Schwab
2015	123	$9.6 million	Schwab
2014	125	$9.9 million	Schwab
2013	218	$13.6 million	not listed
2012	217	$12.0 million	Principal
2011	217	$10.4 million	Principal
2010	216	$10.5 million	Principal
2009	408	$9.0 million	Principal

Frontier Airlines Holdings, Inc. Retirement Savings Plan

401(k)Merged

Merged. In 2010 its assets moved to the Republic Airways 401(k), sponsored by Frontier Airlines, Inc. (EIN 06-1449146, plan 001). Accounts moved with them, so that plan is the one to contact.

Plan number: 001Employer EIN 84-1256945
Participants (2009): 4,929
Net assets (2009): $115 million
Recordkeeper: Fidelity2009–2010
Plan administrator: Republic Airways Holdings, Inc
8909 Purdue Road, Suite 300
Indianapolis, IN 46268
(317) 471-2257As filed for 2010
In effect since: February 8, 1994

Year by year, 2009 to 2010

Plan year	Participants	Net assets	Recordkeeper
2010	0	$0	Fidelity
2009	4,929	$115 million	Fidelity

If you had money in one of these plans

Call Schwab (schwab.com), which runs the Frontier Airlines, Inc. 401(k) Retirement Plan. With your Social Security number and the plan name, it can tell you whether you still have a balance and, if not, where it went.
Or call the plan administrator listed on the plan below ((317) 471-2344). That number was filed for 2025; ask for the benefits or retirement plan office.
If your plan was merged, your account moved with it. Follow the link on the plan to the plan it went into, and contact that one.
If your plan closed, unclaimed balances usually went to an IRA in your name, to the PBGC's missing participants program, or to state unclaimed property. Here is how to check each one.
Still stuck? The Department of Labor's benefits advisers help for free: askebsa.dol.gov or 1-866-444-3272. Never pay anyone to find your own money.

What these numbers are

They come from the Form 5500 annual reports each plan files with the Department of Labor, as the plan filed them. A plan year is usually a calendar year.
Participants counts everyone in the plan at year end: current employees, former employees who still have a balance or a pension coming, and retirees or beneficiaries being paid.
The recordkeeper is the service provider whose Schedule C entry says it keeps the plan's records. Small plans do not file Schedule C, so some plans show none.
We cannot see anyone's account. Only the plan or its recordkeeper can tell you your balance.

Sources: U.S. Department of Labor, Form 5500 datasets and PBGC trusteed plans. How we read them.