Top 13 Summer high school internship Jobs in Denver Co

2026 Summer Intern, Human Resources (Talent Acquisition)
Frontier Airlines, Inc —Denver, CO
- Seasonal
- Word processing
- Office
- Continuous improvement
- On-the-job training
7d
Student Solar Construction Intern
GRID ALTERNATIVES —Denver, CO
- $19.29 an hour
- Construction site
- No experience needed
- Office
Quick Apply
17h
Intern - Brand and Customer Experience
GO Car Wash Management Corp —Greenwood Village, CO
- From $17 an hour
- Part-time
- Remote
- Background check
- High school diploma or GED
- Organizational skills
Quick Apply
Graduate (Summer Intern) –Data Center Modeler for Power System Study
National Laboratory of the Rockies —Golden, CO
- $44,500 - $71,200 a year
- Full-time
- Pass drug screening
- Master's degree
- Analysis skills
- 403(b) matching
- Health insurance
Campus Coordinator of College Success (2026-2027 School Year)
DSST Public Schools —Denver, CO
- $51,000 - $61,000 a year
- Full-time
- School experience
- Spanish
- High school
- Paid parental leave
- Adoption assistance
Campus Coordinator of College Success/Campus Support Teacher (2026-2027 School Year)
DSST Public Schools —Denver, CO
- $51,500 - $61,500 a year
- Full-time
- School experience
- Classroom
- Spanish
- Paid parental leave
- Adoption assistance
12d
Inclusion Counselor
JEWISH COMMUNITY CENTER OF DENVER —Denver, CO
- $21 - $25 an hour
- Seasonal
- Background check
- School experience
- 18 years or older
Quick Apply
INSTRUCTOR, CTE - DESIGN & DIGITAL ARTS (DIGITAL DESIGN), 9TH-12TH GRADE
DELTA HIGH SCHOOL —Denver, CO
- Online Application
- Classroom
- Spanish
- High school
- Health insurance
Administrator, Redwoods Program
DAVITA —Denver, CO
- $57,784 - $76,000 a year
- Full-time
- Mid-level
- Bachelor's degree
- Organizational skills
- Health insurance
- Dental insurance
7d
INSTRUCTOR, CTE - ENGINEERING, 9TH - 12TH GRADE
East High School —Denver, CO
- Online Application
- Classroom
- Spanish
- Computer Science
- Health insurance
1h
INSTRUCTOR, CTE - BIOTECHNOLOGY, 9TH-12TH GRADE
Career Education Center Early College —Denver, CO
- Online Application
- Classroom
- Spanish
- High school
- Health insurance
General Attorney (Program Litigation)
US Social Security Administration —Denver, CO
- $63,795 - $139,684 a year
- Online Application
- Background check
- Writing skills
- Pass drug screening
- Flextime
INSTRUCTOR, CTE - CONSTRUCTION PLANNING AND DEVELOPMENT, 9TH-12TH GRADE
Abraham Lincoln High School —Denver, CO
- Online Application
- Classroom
- Spanish
- High school
- Health insurance

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summer high school internship jobs near denver co

2026 Summer Intern, Human Resources (Talent Acquisition)

Frontier Airlines, Inc -
Denver, CO

Apply Now

Job Details

Seasonal | Internship
7 days ago

Benefits

On-the-job training

Qualifications

Word processing
Productivity software

Full Job Description

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 2025 Spring Intern, Human Resources (Talent Acquisition) will have the opportunity to gain experience in airline operations at Frontier Airlines by working within the HR department for a specific period of time. The intern will gain experience throughout Human Resources 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

Assist assigned HR department with various projects and functions as assigned.
Respond (by email, phone and in person) to requests made by employees, candidates, and members of leadership as needed.
Create and analyze Human Resources reports, as designated
Create and/or update HR presentations
Complete assigned HR projects in a timely and professional manner
Update and/or maintain data in HR systems
Assist in the facilitation of HR meetings, including booking meeting rooms, creating agendas and following-up on action items.
Assist with filling and maintenance of HR records.

Other Functions (Varies by Assigned Department with HR)

Become knowledgeable of all Frontier policies and departmental procedures and policies where intern performs work.
Work with the Manager, Learning & Development to participate as a member of the Company’s training Center of Excellence.
Work within the Learning Management System (LMS) for the company to monitor compliance and identify training needs
Assist with various projects and functions as assigned.
Gather feedback and measure the impact of engagement initiatives to drive continuous improvement.
Organize and facilitate company-wide events, town halls, and engagement activities.
Assist in the creation and promotion of employee recognition programs to celebrate employee contributions.
Coordinate with Communications, HR, and Branding teams to ensure consistent messaging and alignment with company values.

Qualifications

Must be enrolled in an accredited university preferred
Preference given to candidates pursuing degree in Communications, Organizational Development, Human Resources, or a related field
Previous experience in customer service or event planning preferred

Knowledge, Skills and Abilities

Possess excellent office and communication skills
Must have working knowledge of PC’s, MS Office software including Word, Excel

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.

Supervision Received

Close Supervision: The incumbent is assigned duties according to specified procedures and receives detailed instructions. Work is checked frequently.

Positions Supervised

None

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

Class Year

Interns
($ per hour)

Freshman

18.81

Sophomore

19.50

Junior

20.50

Senior

21.50

Graduate Program

23.50

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."

Equal Opportunity Employer
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights (https://www.eeoc.gov/poster) notice from the Department of Labor.

Apply Now

Refine Your Search

summer high school internship jobs in denver co

2026 Summer Intern, Human Resources (Talent Acquisition)

Student Solar Construction Intern

Intern - Brand and Customer Experience

Graduate (Summer Intern) –Data Center Modeler for Power System Study

Campus Coordinator of College Success (2026-2027 School Year)

Campus Coordinator of College Success/Campus Support Teacher (2026-2027 School Year)

Inclusion Counselor

INSTRUCTOR, CTE - DESIGN & DIGITAL ARTS (DIGITAL DESIGN), 9TH-12TH GRADE

Administrator, Redwoods Program

INSTRUCTOR, CTE - ENGINEERING, 9TH - 12TH GRADE

INSTRUCTOR, CTE - BIOTECHNOLOGY, 9TH-12TH GRADE

General Attorney (Program Litigation)

INSTRUCTOR, CTE - CONSTRUCTION PLANNING AND DEVELOPMENT, 9TH-12TH GRADE

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