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Frontier Airlines Headquarters Address, Corporate Office Location, and Contact Details

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About

Frontier Airlines, Inc. is an American ultra-low-cost carrier (ULCC) headquartered at 4545 Airport Way, Denver, Colorado 80239 — a renovated 5-story, 90,000-square-foot corporate campus adjacent to Denver International Airport (DEN), which has served as Frontier’s headquarters since relocating there. Frontier was founded in 1994 as a successor to the original Frontier Airlines (which had ceased operations in 1986) — relaunched with a Denver hub and its trademark animal-themed aircraft livery.

Frontier is a wholly owned subsidiary of Frontier Group Holdings, Inc. (NASDAQ: ULCC) — the publicly traded parent company — and is the most fuel-efficient major US airline, claiming 43% fuel savings per seat-mile compared to the weighted average of major US carriers, attributable to its all-Airbus A320neo family fleet — the largest A320neo fleet in the Americas. Frontier serves 120+ destinations across the United States, Caribbean, Mexico, and Central America, with major operational bases at Denver International Airport (DEN), Orlando International Airport (MCO), and eleven other cities. CEO Barry Biffle has led Frontier since 2015.

In early 2022, Frontier and Spirit Airlines announced a proposed merger — but Spirit ultimately accepted a competing bid from JetBlue, a deal later blocked by US courts. Frontier and Spirit subsequently revived merger discussions in 2023, though those talks also collapsed.

Quick Facts

Founded

1994 (Denver, CO)

HQ

4545 Airport Way, Denver, CO 80239 (adjacent to DEN)

HQ phone

(720) 374-4200

Customer service

1-801-401-9000

Also

(800) 243-6297

NASDAQ ticker

ULCC (Frontier Group Holdings)

CEO

Barry Biffle

Fleet

100+ Airbus A320-family aircraft (largest A320neo fleet in Americas)

Destinations

120+ (US, Caribbean, Mexico, Central America)

Employees

14,000+

Bases

Denver (DEN), Orlando (MCO), + 11 other cities

What Brings You Here? Find the Right Contact

Frontier flight complaint — delay, cancellation, or baggage

Call 1-801-401-9000 (24/7 reservations/customer service) or submit a complaint at flyfrontier.com/contact. For DOT purposes, document your complaint in writing.

Frontier bag claim — lost, damaged, or delayed baggage

File a baggage claim at the airport immediately upon arrival, then follow up at flyfrontier.com/contact or via 1-801-401-9000. Frontier is required to compensate for lost baggage under DOT rules.

Frontier refund request

For flight cancellations by Frontier (not voluntary by passenger), passengers are entitled to a full cash refund under DOT regulations. File at flyfrontier.com/contact. For voluntary cancellations, Frontier’s WORKS bundle covers free cancellations; standard fare refund policies vary.

Frontier Discount Den / FRONTIER Miles loyalty

For FRONTIER Miles loyalty program disputes, visit flyfrontier.com or call 1-801-401-9000.

Frontier accessible travel (disability) complaint

For disability or accessibility complaints, call 1-801-401-9000 and request the accessibility desk, or file with the DOT.

Investor relations (Frontier Group Holdings)

Visit ir.flyfrontier.com or write to Frontier Group Holdings, Inc., Investor Relations, 4545 Airport Way, Denver, CO 80239.

Legal / subpoena

Serve Frontier Airlines, Inc., 4545 Airport Way, Denver, CO 80239. Frontier is incorporated in Delaware — confirm the registered agent via corp.delaware.gov.

Phone & Contact Directory

Reservations / Customer Service

1-801-401-9000

General

(800) 243-6297

Corporate HQ

(720) 374-4200

HQ address

4545 Airport Way, Denver, CO 80239

Website

flyfrontier.com

Investor relations

ir.flyfrontier.com

Corporate Headquarters & Office Addresses

Principal global headquarters


Frontier Airlines, Inc. / Frontier Group Holdings, Inc.
4545 Airport Way
Denver, CO 80239
United States
Phone: (720) 374-4200

Key operational bases and offices

  • Orlando, FL: Orlando International Airport (MCO) — second-largest operational hub
  • Charlotte, NC: Charlotte Douglas International Airport (CLT)
  • Las Vegas, NV: Harry Reid International Airport (LAS)
  • Philadelphia, PA: Philadelphia International Airport (PHL)
  • Fort Lauderdale, FL: Fort Lauderdale-Hollywood International Airport (FLL)
  • Hebron, KY: Cincinnati/Northern Kentucky Airport (CVG)
  • Missoula, MT: Missoula Montana Airport (MSO)

About the Denver DEN-adjacent HQ: Frontier’s headquarters at 4545 Airport Way was renovated by Whiting-Turner Contracting Company as a partial demolition and full interior renovation of a 5-story, 90,000-square-foot office building designed to serve as Frontier’s modern corporate headquarters. The location adjacent to Denver International Airport — one of the world’s busiest airports and Frontier’s primary hub — positions Frontier’s corporate leadership within minutes of DEN’s gates, runways, and operations facilities, enabling tight operational integration. Denver has been Frontier’s home since its 1994 founding, reflecting the city’s central role in US aviation and the Rocky Mountain West — and Frontier’s identity as the airline of the American West, symbolized by its iconic animal-livery aircraft (including antelope, wolves, bears, and other native wildlife).

How to Escalate a Complaint

  1. Submit a written complaint at flyfrontier.com/contact — For flight delays, cancellations, baggage, and refund requests. Frontier is required to respond within 30 days under DOT rules.
  2. Call 1-801-401-9000 — For immediate reservation changes, refund requests, and escalations.
  3. File with the DOT (Department of Transportation) — The DOT’s Aviation Consumer Protection Division has direct regulatory authority over airline complaints. File at airconsumer.dot.gov — the DOT publicly reports airline complaint volumes and requires responses.
  4. File with the BBB — Frontier is listed with the BBB (Denver). File at bbb.org.
  5. File a DOT refund complaint for airline cancellations — Under DOT regulations, Frontier must provide full cash refunds for airline-initiated cancellations and significant delays. File at airconsumer.dot.gov if your refund is denied.
  6. File with the Colorado AG — The Colorado AG’s consumer protection division is at coag.gov/office-sections/consumer-protection. Frontier’s Denver HQ makes the Colorado AG a relevant authority.
  7. Mail to the Denver HQ — Write to Frontier Airlines, Inc., Customer Relations, 4545 Airport Way, Denver, CO 80239.
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