Frontier Airlines Airbus jets with armadillo and polar bear tails at Denver International Airport
Airline Guide F9 · Ultra-low-cost

Frontier Airlines flights at low base fares — if you pack light.

Frontier is an ultra-low-cost airline based in Denver. Its base fares are among the lowest in the U.S., and almost everything else — bags, seats, changes — is sold as an extra.

Find F9 fares Booking help · 24/7+1 (855) 447-1880
Airline profile Updated 21 October 2026
IATA / ICAO
F9 / FFT
Home base
Denver (DEN)
Alliance
None
Loyalty
FRONTIER Miles
Seating
Economy, UpFront Plus, First
Founded
1994
Official airline website

Search My Trip is an independent travel agency, not Frontier Airlines. We help you compare and book F9 flights; check-in, seats and onboard service are handled by the airline.

  • DENHome base
  • 1994Year founded
  • ULCCUltra-low-cost model
  • AirbusAll-A320 family fleet
01
How Frontier works

Pay for the fare, add what you need

The base fare covers a seat and one small personal item. Carry-on bags, checked bags and seat selection cost extra, either one by one or in bundles. Add-ons are usually cheaper during booking than at the airport.

BaseSeat + personal item
BundlesBags, seat & flexibility
GoWild!All-you-can-fly pass

Bundles

Packages that add a carry-on, checked bag, seat selection and flexibility for one price.

UpFront Plus

Front rows with extra legroom and a blocked middle seat.

GoWild! Pass

A subscription for unlimited flights on eligible dates, at a fixed price.

Animal tails

Every aircraft has a different animal on its tail — a Frontier tradition.

Why book Frontier Airlines with us

  • Fare rules explained

    We tell you what your fare includes — bags, seats, changes — before you pay.

  • Bag allowance confirmed

    Allowances vary by route and fare. We check yours.

  • Connections checked

    We flag tight layovers, overnight stops and airport changes.

  • 24/7 help

    Real people for changes, cancellations and refunds.

02
Routes to watch

Popular Frontier Airlines routes

Popular nonstop routes
DENLAS Denver → Las Vegas ~2h 00m Live fares DENMCO Denver → Orlando ~3h 50m Live fares PHLMCO Philadelphia → Orlando ~2h 40m Live fares DENPHX Denver → Phoenix ~1h 55m Live fares
From Columbus to Frontier cities
CMHLAS Columbus → Las Vegas Check live schedules Live fares CMHMCO Columbus → Orlando Check live schedules Live fares CMHMIA Columbus → Miami Check live schedules Live fares CMHCUN Columbus → Cancun Check live schedules Live fares

Flight times are typical scheduled durations and can vary by season. Click a route to see live prices and availability for your dates.

03
How the network works

Denver, plus a lot of point-to-point

DEN Denver International Home base · largest operation
Also LAS MCO PHL ATL

Denver is Frontier's home and largest base, but much of its network links leisure cities directly, so many trips are nonstop without a hub connection.

  • Leisure citiesOrlando, Las Vegas, Florida and the Sun Belt.
  • MexicoBeach destinations such as Cancun and Puerto Vallarta.
  • Caribbean & Central AmericaPuerto Rico, the Dominican Republic and selected Central American cities.
  • Point-to-pointMany routes skip the hub altogether.
04
Choose your seat

Mostly economy, three ways to fly it

Frontier Airlines Airbus A321neo N636FR "Savannah the Yellow-Headed Amazon" landing at Las Vegas
Most of a Frontier plane is economy. What changes is what you add: a bundle with bags and seat choice, or a seat in the first two rows. During 2026 Frontier is starting to replace UpFront Plus there with a new First Class in a 2-2 layout, plane by plane. Frontier A321neo "Savannah the Yellow-Headed Amazon" arriving at Las Vegas. Photo: Tomás Del Coro, CC BY-SA 4.0
Cheapest

Base fare

  • Seat + personal item
  • Seat assigned at check-in
  • Changes cost extra
Better value

Bundle

  • Carry-on and/or checked bag
  • Seat selection
  • More flexibility to change
First two rows

UpFront Plus / First

  • UpFront Plus: blocked middle seat
  • First Class: 2-2 wider seats
  • Which one depends on the aircraft
05
Pack right

Frontier Airlines baggage at a glance

Personal item Included

Must fit under the seat (about 18 × 14 × 8 in)

Carry-on bag Paid

Cheaper when added during booking

Checked bag Paid

Standard weight limit is 40 lb

Bundles Bags included

Depending on the bundle you choose

Frontier prices bags dynamically and charges more at the airport. Check the exact fee for your flight when booking.

06
FRONTIER Miles

Status from spending, not distance

FRONTIER Miles elite status is earned with points from flights, extras and the Frontier credit card. Higher tiers add perks such as free seat selection and bags.

  1. 01 Silver Entry tier
  2. 02 Gold More free extras
  3. 03 Platinum More free extras
  4. 04 Diamond Top tier

Tier names, requirements and benefits are set by Frontier Airlines and can change.

07
From our travel desk

Tips for cheaper Frontier Airlines fares

  1. Compare the total price

    Add bags and seats before comparing Frontier with other airlines.

  2. Buy extras early

    Bags and seats cost more at the airport than during booking.

  3. Measure your personal item

    An oversized bag at the gate is the most expensive mistake.

  4. Price a bundle

    If you need a bag and a seat, a bundle is often cheaper than buying them separately.

  5. Check in online

    Check in on the app or website to avoid airport fees.

Your F9 ticket in four steps

  1. Step 1 Search

    Enter your cities and dates and filter the results to Frontier Airlines.

  2. Step 2 Compare

    See fares, stops and cabins side by side with taxes shown up front.

  3. Step 3 Add details

    Enter traveller names exactly as on ID and add your FRONTIER Miles number.

  4. Step 4 Fly

    Get your confirmation by email, then check in with Frontier Airlines before you fly.

08
Good to know

Frontier Airlines FAQs

Is Search My Trip the same as Frontier Airlines?
No. Search My Trip is an independent travel agency. We help you search, compare and book Frontier Airlines flights, but we are not owned by or affiliated with the airline.
What is included in a Frontier base fare?
A seat assigned at check-in and one personal item that fits under the seat. Carry-ons, checked bags and seat choice cost extra.
How big can my personal item be?
About 18 × 14 × 8 inches, including handles and wheels. Larger bags must be paid for as a carry-on.
Is Frontier in an airline alliance?
No. Frontier sells its own flights only, so connections with other airlines are on separate tickets.
What is the GoWild! Pass?
A Frontier subscription that allows unlimited flights on eligible dates for a fixed price, with taxes and fees paid per trip.
Can I book Frontier Airlines over the phone?
Yes. Our travel experts can help you compare fares, bundles and bag fees and book for you. Call +1 (855) 447-1880 any time — we're available 24/7. You can also book Frontier directly on the airline's own website.
Talk to an expert

Planning a trip on Frontier Airlines?

Tell us your dates — we will compare fares, connections and fare types and find the best option.

+1 (855) 447-1880

Search My Trip is an independent travel agency and is not affiliated with, endorsed by or sponsored by Frontier Airlines. Airline names and programme names are trademarks of their respective owners and are used here only to describe the flights we help you book. Airline policies change, so always confirm details with the airline before you travel. Last updated 21 October 2026.

Photos via Wikimedia Commons, cropped and resized: Tony Webster (CC BY 2.0); Tomás Del Coro (CC BY-SA 4.0).

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