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- Frontier Airlines
About Frontier Airlines
Frontier Airlines, Inc. (NASDAQ: ULCC) is one of America’s largest ultra-low-cost carriers (ULCCs) — a Denver, Colorado-based airline that has built its entire business model around delivering the lowest possible base fares to budget-conscious travelers across more than 100 domestic and international destinations in the U.S., Caribbean, Mexico, and Central America. Frontier was founded in 1994 in Denver, Colorado — relaunched as a new carrier after the original Frontier Airlines ceased operations — and has grown into a 100+ aircraft operation. Frontier is headquartered at 4545 Airport Way in Denver, Colorado, located just minutes from Denver International Airport (DEN), its primary hub and largest focus city. Frontier is a subsidiary of Frontier Group Holdings, Inc. and operates exclusively Airbus A320-family aircraft — with 84% of its fleet now comprising the ultra-fuel-efficient A320neo family, giving Frontier the largest A320neo fleet in the Americas and the title of most fuel-efficient U.S. airline, achieving 43% better fuel efficiency per seat-mile compared to the weighted average of major U.S. airlines.
Frontier entered 2026 in a significant transition period. In February 2026, Frontier unveiled a new CEO to outline a fresh path to profitability following Barry Biffle’s tenure — with the new leadership team focused on right-sizing the fleet, improving aircraft utilization, reducing costs, and capitalizing on the competitive vacuum left by Spirit Airlines’ bankruptcy and exit from dozens of overlapping routes. In FY 2025, Frontier reported full-year total revenue of approximately $3.7 billion — a challenging year marked by excess domestic capacity, compressed unit revenues, and a net loss. For FY 2026, analysts project Frontier’s revenue to grow to approximately $4.56 billion as the ULCC market consolidates and competitive conditions improve with Spirit’s collapse.
Quick Information
Industry
Ultra-Low-Cost Carrier (ULCC) — Scheduled Passenger Airline
Founded
1994, Denver, Colorado
NASDAQ Ticker
ULCC (Frontier Group Holdings, Inc.)
CEO
New CEO (as of February 2026); Barry Biffle previously served as CEO
Fleet
100+ Airbus A320-family aircraft; largest A320neo fleet in the Americas
Destinations
120+ destinations in the U.S., Caribbean, Mexico, and Central America
Number of Employees
14,000+ team members
Annual Revenue
Approximately $3.7 billion (FY 2025)
Corporate Office Hours
Customer Service: Available 24/7. Corporate headquarters: Monday–Friday 8:00 AM – 4:00 PM MT.
Email
customer.service@flyfrontier.com — primary customer service and complaints
Website
www.flyfrontier.com
Contact / Complaint Form
frontiercswprod.powerappsportals.com/contact-us/request-complaint-form/
Investor Relations
ir.flyfrontier.com
Careers Page
flyfrontier.com/careers
Products & Services
Frontier Airlines delivers an ultra-low-cost air travel experience built on its “Low Fares Done Right” model — offering unbundled base fares among the lowest in the U.S. market, with optional add-ons for seats, bags, and services. Their full range of products, services, and fare options includes:
- Scheduled Passenger Service — direct, connecting, and codeshare flights across 120+ domestic and international destinations; Frontier focuses on point-to-point routes between mid-sized and major U.S. cities as well as leisure markets in the Caribbean, Mexico, and Central America
- WORKS Bundle — Frontier’s all-inclusive bundled add-on covering a carry-on bag, a checked bag, a seat selection, and flight changes/cancellations for a flat fee per booking; the highest-value single add-on in the Frontier ancillary menu
- Carry-On & Checked Bags — unbundled bag fees; Frontier charges separately for carry-on and checked luggage; purchasing bags in advance at time of booking is significantly cheaper than paying at the gate or airport
- Seat Selection — economy seat assignments including standard seats, UpFront Plus (extra legroom bulkhead seats), Stretch seats (extra legroom exit row and front-of-plane seats), and the premium front-of-cabin Business seat
- Flight Changes & Cancellations — flight change, cancellation, and credit options governed by Frontier’s fare rules; available as a standalone add-on or included in the WORKS bundle
- Discount Den — Frontier’s paid subscription loyalty membership ($59.99/year) providing access to exclusive member-only fares, often the lowest prices available on flyfrontier.com; the most cost-effective way to fly Frontier for frequent leisure travelers
- FRONTIER Miles — Frontier’s free frequent flyer program; earn miles on every Frontier flight redeemable for award travel and upgrades
- Frontier Vacation Packages — bundled flight + hotel + car rental vacation packages sold through flyfrontier.com, targeting leisure travel to Florida, Caribbean, Mexico, and Las Vegas destinations
- Frontier Airlines Mastercard — co-branded credit card earning FRONTIER Miles on everyday purchases
Corporate Phone Numbers
Main Customer Service (24/7)
1-801-401-9000 — primary Frontier Airlines customer service line for reservations, flight changes, baggage issues, and general support. Available 24 hours a day, 7 days a week.
Customer Service Alternate
1-855-981-4544 — alternate Frontier Airlines customer service toll-free number. Available 24/7.
Complaints & Customer Relations
1-877-503-7007 — dedicated Frontier Airlines complaints and customer relations line. Available during extended business hours.
Corporate Headquarters Main Line
(720) 374-4200 — Frontier Airlines corporate headquarters main line at 4545 Airport Way, Denver, Colorado. Available Monday–Friday 8:00 AM to 4:00 PM MT.
Corporate Headquarters Alternate
(800) 243-6297 — Frontier Group Holdings alternate corporate headquarters phone number.
How to Reach a Real Person at Frontier Airlines
The fastest way to speak with a live Frontier Airlines customer service agent is to call 1-801-401-9000 — available 24 hours a day, 7 days a week. When the automated system answers, listen to the menu options for reservations, flight status, baggage, and complaints, and press the option matching your inquiry. To bypass the automated menu and reach a live agent directly, press 0 or say “agent” at any prompt. Have your booking confirmation number, flight details, and a description of your issue ready before calling. For the shortest wait times, calling during off-peak hours — early morning or late evening — is recommended.
For written complaints and formal customer relations issues, submit the Frontier Airlines official online complaint or compliment form at frontiercswprod.powerappsportals.com/contact-us/request-complaint-form/ — where you can attach supporting documents, receipts, and photos. You can also email customer.service@flyfrontier.com with your booking confirmation number, flight details, date of travel, and a detailed description of your complaint. Frontier also responds to customer messages through its @FlyFrontier accounts on X (Twitter) and Facebook — tagging Frontier publicly often results in faster responses for unresolved complaints.
Frontier Airlines Headquarters & Corporate Office Address
Frontier Airlines has been headquartered in Denver, Colorado since its founding (and re-founding) in 1994 — cementing the Mile High City as its permanent operational and corporate home. The headquarters at 4545 Airport Way sits just minutes from Denver International Airport (DEN) — one of the largest airports in the world by land area and Frontier’s primary operating hub — making the location strategically ideal for an airline whose operational leadership must be tightly integrated with day-to-day flight operations. The headquarters campus houses Frontier’s executive leadership team, operations control center, network planning, customer experience, marketing, finance, and all major corporate support functions. The building, developed and built out with a modern lobby and collaborative office environment, reflects Frontier’s identity as a lean, efficient, modern ultra-low-cost carrier.
Frontier Airlines, Inc. / Frontier Group Holdings — Corporate Headquarters
4545 Airport Way
Denver, Colorado 80239
United States
Frontier Airlines — Charlotte, NC Regional Office
Charlotte, North Carolina
United States
Frontier Airlines — Las Vegas, NV Regional Office
Las Vegas, Nevada
United States
Frontier Airlines — Fort Lauderdale, FL Regional Office
Fort Lauderdale, Florida
United States
Frontier Airlines — Philadelphia, PA Regional Office
Philadelphia, Pennsylvania
United States
Frontier Airlines — Hebron, KY Operations
Hebron, Kentucky
United States
For all formal written complaints and legal correspondence, write to Frontier Airlines, Inc., 4545 Airport Way, Denver, Colorado 80239, Attn: Customer Relations. Include your full name, booking confirmation number, flight date and number, a detailed description of your complaint, all prior contacts made, and the specific resolution you are requesting.
How to File a Complaint Against Frontier Airlines
Step 1 — Address the Issue at the Airport
For immediate in-airport complaints — gate issues, boarding problems, baggage mishandling, or flight cancellations — speak directly with a Frontier gate agent or Airport Customer Service supervisor at the airport. Gate agents and supervisors have immediate authority to rebook flights, issue travel credits, and resolve service failures on the spot. This is always the fastest first step.
Step 2 — Call 1-801-401-9000 or 1-877-503-7007
For post-travel complaints or issues not resolved at the airport, call Frontier’s main customer service line at 1-801-401-9000 (24/7) or the dedicated complaints line at 1-877-503-7007. Have your booking confirmation number, flight number, date of travel, and a clear description of your complaint ready. Ask for a formal case reference number.
Step 3 — Submit the Online Complaint Form
Submit a formal written complaint through Frontier’s official online form at frontiercswprod.powerappsportals.com/contact-us/request-complaint-form/. Attach supporting documents — receipts, photos, boarding passes — and include your booking confirmation number, flight details, and the specific resolution you are requesting.
Step 4 — Email customer.service@flyfrontier.com
For a formal written record of your complaint, email customer.service@flyfrontier.com. Include your full name, booking confirmation number, flight date and number, a detailed description of the issue, prior contacts, and the specific resolution you are requesting. Follow up by phone to confirm receipt.
Step 5 — Request Supervisor Escalation
If the first customer service representative cannot resolve your complaint, ask immediately to be escalated to a supervisor or the Customer Relations Department. Supervisors and customer relations agents have broader authority to approve exception refunds, travel credits, and formal resolutions for escalated complaints.
Step 6 — Escalate on Social Media
Contact Frontier through its @FlyFrontier account on X (Twitter) or the official Frontier Airlines Facebook page. Tag Frontier publicly with your case reference number and a brief, factual description of your unresolved complaint. Public posts monitored by Frontier’s social media team frequently result in faster escalated responses.
Step 7 — Write to the Corporate Headquarters
For formally unresolved complaints, write to Frontier Airlines, Inc., 4545 Airport Way, Denver, Colorado 80239, Attn: Customer Relations. Include all prior contacts, case reference numbers, boarding passes, receipts, and the specific resolution you are requesting.
Step 8 — File a Complaint With the U.S. Department of Transportation (DOT)
For complaints involving denied refunds for canceled or significantly delayed flights, denied boarding compensation, deceptive pricing, disability discrimination, or violations of the Airline Passengers’ Bill of Rights, file a formal complaint with the DOT’s Office of Aviation Consumer Protection at transportation.gov/airconsumer/file-consumer-complaint. DOT requires airlines to acknowledge complaints within 30 days and respond substantively within 60 days — and DOT complaints trigger formal review that frequently prompts airlines to resolve lingering issues.
Step 9 — File a BBB Complaint
File a public complaint with the Better Business Bureau at www.bbb.org. Frontier Airlines is listed with the BBB’s Denver Metro chapter, and a formal complaint filing typically prompts a written corporate response.
Step 10 — Contact Your State Attorney General
For consumer protection complaints involving deceptive advertising, misleading fees, or unfair trade practices, contact your state Attorney General’s consumer protection division. Colorado residents can contact the Colorado Attorney General’s Consumer Protection Section at coag.gov/office-sections/consumer-protection/ or call 1-800-222-4444.
