Fall Intern Jobs in Colorado (NOW HIRING)

Why Work for Frontier Airlines?

At Frontier, we believe the skies should be for everyone. We deliver on this promise through our commitment to Low Fares Done Right. This is more than our tagline - it’s our driving philosophy. Every member of Team Frontier has an important role to play in bringing this vision to life. Our successful business model allows travelers to take advantage of our fast-growing route network while our bundled and unbundled pricing options allow our customers to personalize their travel experience and only pay for the services they need – saving them money along the way.

What We Stand For

Low Fares Done Right is our mission and we strive to bring it to life every day. Our ‘Done Right’ promise means delivering not only affordable prices, but making travel friendly and easy for our customers. To do this, we put a great deal of care into every decision and action we take. We must be efficient with the use of our resources and make smart decisions about how we run our business. We must also innovate and be pioneers - we’re not afraid to try new things. While our business requires us to fly high in the air, we also consider ourselves down-to-earth in our approach, creating a warm and friendly experience that truly demonstrates Rocky Mountain Hospitality.

Who We Are

Frontier Airlines is committed to offering ‘Low Fares Done Right’ to more than 100 destinations and growing in the United States, Canada, Dominican Republic and Mexico on more than 350 daily flights. Headquartered in Denver, Frontier’s hard-working aviation professionals pride themselves in delivering the company’s signature Low Fares Done Right service to customers. Frontier Airlines is the proud recipient of the Federal Aviation Administration’s 2018 Diamond Award for maintenance excellence and was recently named the industry’s most fuel-efficient airline by The International Council on Clean Transportation (ICCT) as a result of superior technology and operational efficiencies.

What Will You Be Doing?

The Tax Intern will assist Frontier’s Tax team with indirect and direct tax compliance obligations. The Intern will also assist with tax research and with monthly-end, quarter-end and year-end closings. The intern will gain experience throughout the Tax team through assigned project work and on the job training. This internship is for Fall 2026 -9/9/2026 - 12/11/2026 based in Denver, CO.

Essential Functions

• Compilation of information and data for various tax returns, including income, property, excise, fuel and sales/use taxes.
• Compilation of information for the financial statement requirements of the tax department
• Maintain the tax department’s calendar
• Assist with federal and state audit information requests
• Assist with monthly journal entry and tax account reconciliation processes
• Preparation of sales and use tax, excise tax and fuel tax return workpapers
• Processing of tax returns and tax payments
• Reconciliation of tax notices with existing records
• Tax research projects as required
• Perform other tax compliance and administrative duties as assigned by management

Qualifications

• Undergraduate sophomore-level students or above working towards a Bachelor’s Degree in Accounting (concentration in Tax a plus) OR
• Graduate students working towards a Master’s Degree in Taxation or Business Administration (concentration in Accounting of Finance)
• Prior work experience, including a prior co-op internship in accounting or tax is preferred, but not mandatory
• Experience in Microsoft Excel and Word

Knowledge, Skills and Abilities

• Detail-oriented and possess good organizational skills
• Strong communication skills
• Demonstrates competency in problem-solving skills
• Demonstrates interest in learning tax
• Demonstrates values of self-motivation, integrity, accountability, teamwork and innovation

Equipment Operated

Standard office equipment, including PC, copier, fax machine, printer

Work Environment

Typical office environment, adequately heated and cooled

Physical Effort

Generally, not required.

Please note: this posting has a closing date of on or after 8/6/2026, midnight MT.

Pay Rate

Class Year

Interns
($ per hour)

Freshman

19.50

Sophomore

20.50

Junior

21.50

Senior

22.25

Graduate Program

24.25

Please note: this posting has a closing date of on or after 4/9/2026, midnight MT.

Workplace Policies

At Frontier Airlines, we wholeheartedly support and have a strong commitment to Equal Employment Opportunity (EEO) and Affirmative Action. Frontier is committed to providing equal employment opportunities for all persons regardless of race, color, religion, gender, gender variance, sexual orientation, age, genetic information, martial status, national origin, citizenship status, disability, military, veteran status, and any other basis protected by federal, state, or local laws.

Diversity is an essential part of our success. Our company flourishes because of the unique backgrounds, skills and ideas that our team members contribute every day. We salute and actively recruit veterans. Military experience is valuable and transferable to many of the positions essential to the operations of our airline.

Frontier Airlines is a Zero Tolerance Drug-Free Workplace. All prospective DOT safety-sensitive employees are subject to pre-employment testing for the following drugs and their metabolites: Marijuana, Cocaine, Amphetamines, Opioids and Phencyclidine (PCP). Further, any DOT safety-sensitive job applicant who is found to have tested positive on any required drug or alcohol test at a former employer will be considered ineligible for employment with Frontier.

Disclaimer: The above statements are intended only to describe the general nature and level of work required of the referenced position; they are not intended to be an exhaustive list of all responsibilities, duties, and skills required of individuals in this position. Please be advised that duties and expectations of this position may be subject to change.

Colorado Residents: In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.