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Cheap flights from Billings to Phoenix Sky Harbor

Compare Billings to Phoenix Sky Harbor flight deals

Find the cheapest month or even day of the year to fly to Phoenix Sky Harbor

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Flight deals from Billings to Phoenix Sky Harbor

Looking for a cheap last-minute deal or the best round-trip flight from Billings Airport to Phoenix Sky Harbor Airport? If you want to travel next month, round-trip fares start from $256. Find the lowest prices on one-way and round-trip tickets right here.
Phoenix.$256 per passenger.Departing Mon, Sep 21, returning Fri, Sep 25.Round-trip flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departing from Billings on Mon, Sep 21, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departing from Phoenix Sky Harbor on Fri, Sep 25, arriving in Billings.Price includes taxes and charges.From $256, select.
Phoenix.$261 per passenger.Departing Mon, Aug 24, returning Fri, Aug 28.Round-trip flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departing from Billings on Mon, Aug 24, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departing from Phoenix Sky Harbor on Fri, Aug 28, arriving in Billings.Price includes taxes and charges.From $261, select.
Phoenix.$313 per passenger.Departing Fri, Oct 9, returning Sun, Oct 11.Round-trip flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departing from Billings on Fri, Oct 9, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departing from Phoenix Sky Harbor on Sun, Oct 11, arriving in Billings.Price includes taxes and charges.From $313, select.
Phoenix.$341 per passenger.Departing Wed, Nov 11, returning Tue, Nov 17.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Billings on Wed, Nov 11, arriving in Phoenix Sky Harbor.Inbound indirect flight with Alaska Airlines, departing from Phoenix Sky Harbor on Tue, Nov 17, arriving in Billings.Price includes taxes and charges.From $341, select.
Phoenix.$389 per passenger.Departing Sun, Aug 30, returning Wed, Sep 2.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Billings on Sun, Aug 30, arriving in Phoenix Sky Harbor.Inbound indirect flight with Alaska Airlines, departing from Phoenix Sky Harbor on Wed, Sep 2, arriving in Billings.Price includes taxes and charges.From $389, select.
Phoenix.$446 per passenger.Departing Sun, Sep 27, returning Thu, Oct 1.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Billings on Sun, Sep 27, arriving in Phoenix Sky Harbor.Inbound indirect flight with Delta, departing from Phoenix Sky Harbor on Thu, Oct 1, arriving in Billings.Price includes taxes and charges.From $446, select.
Phoenix.$589 per passenger.Departing Thu, Apr 15, returning Sun, Apr 18.Round-trip flight with Delta.Outbound indirect flight with Delta, departing from Billings on Thu, Apr 15, arriving in Phoenix Sky Harbor.Inbound indirect flight with Delta, departing from Phoenix Sky Harbor on Sun, Apr 18, arriving in Billings.Price includes taxes and charges.From $589, select.

Find the cheapest month to fly from Billings to Phoenix Sky Harbor

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Billings to Phoenix Sky Harbor flights are currently cheapest in September.
Aug
from $261
Sep
from $256
Oct
from $313
Nov
from $341
Dec
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Jan
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Feb
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Mar
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Apr
from $589
May
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Jun
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Jul
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Direct flights from Billings to Phoenix Sky Harbor

Billings to Phoenix Sky Harbor: Alternative routes

Compare routes from Billings to Phoenix below. You may find an airport to fly into that's cheaper, faster, or easier than Phoenix Sky Harbor.

Phoenix Sky Harbor

6km from central Phoenix
Closest
from $256
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Phoenix Scottsdale Municipal

24km from central Phoenix
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Phoenix-Deer Valley

27km from central Phoenix
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Phoenix-Mesa Gateway

42km from central Phoenix
Cheapest
from $96
Search flights

Billings to Phoenix: Flight information

The things to know before you go.
Cheapest flight found$256
Cheapest month to flySeptember
Average flight time2 hrs, 49 mins
Most popular airlineEnvoy Air
Average flights per week18

Finding cheap flights from Billings to Phoenix Sky Harbor: Frequently asked questions

The best price we found for a round-trip flight from Billings to Phoenix Sky Harbor is $256. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 49 minutes is the average flight time from Billings to Phoenix Sky Harbor.
Envoy Air and American Airlines fly direct from Billings to Phoenix Sky Harbor.
There are 18 flights per week flying from Billings to Phoenix Sky Harbor, as of August 2026.
The cheapest month to fly from Billings to Phoenix Sky Harbor is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Billings Airport to Phoenix Sky Harbor Airport on Monday, September 21, 2026.
Yes – the average flight time is 2 hours and 49 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Phoenix Sky Harbor but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Phoenix is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Allegiant Air offers the cheapest flight tickets to Phoenix Sky Harbor.

Traveling from Billings Airport (BIL) to Phoenix Sky Harbor Airport (PHX): what you need to know

  • Around 2 hours 50 minutes is how long you'll be traveling on a direct flight from Billings Airport to Phoenix Sky Harbor Airport.

  • Phoenix's timezone is UTC-7, which is the same as Billings.

  • Give yourself enough time to make your BIL to PHX flight. A good rule of thumb is to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • You can expect longer queues during popular months such as September. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a good idea.

  • American Airlines has direct flights from Billings Airport to Phoenix Sky Harbor Airport. Book with this popular carrier, then get ready to tick off the sights in Phoenix — and maybe even more of the United States if you have time.

  • American Airlines is the top choice for travelers on this route.

  • American Airlines leads the way as the most punctual carrier for BIL to PHX flights, with 94.92% of services reaching their destination on schedule.

  • Think about adding a stopover when booking your ticket from Billings Airport to Phoenix Sky Harbor Airport. Simply deselect 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here's where you can stop between BIL and PHX:

    • Denver International Airport

    • Harry Reid International Airport

    • Salt Lake City Airport

Handy information about Billings Airport (BIL)

  • You'll find BIL at 1901 Terminal Circle, Room 216.

  • Billings Airport has a strong on-time record, making delays less likely. Departures from BIL arrive at their destination as scheduled 84% of the time.

  • Billings Airport is about 10 kilometers from central Billings. If you're ride-sharing, catching a cab or driving from the center, it'll take you 15 minutes or so to get there, depending on the traffic.

  • The journey when using public transport will take about 30 minutes.

  • Need a handy hotel near BIL? If you're catching an early flight from Billings Airport to Phoenix Sky Harbor Airport, these accommodation options will have you sleeping moments from your check-in counter:

Arriving at Phoenix Sky Harbor Airport (PHX)

When to fly to Phoenix Sky Harbor Airport (PHX)

  • The quietest month for a flight from Billings Airport to Phoenix Sky Harbor Airport is March, while April is the most popular. Choose the best time to visit Phoenix based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • When reserving your flight from Billings Airport to Phoenix Sky Harbor Airport, consider the type of weather you enjoy. July is the warmest month in Phoenix, with temperatures ranging from 27ºC (81ºF) to 45ºC (113ºF).

  • Look for cheap tickets from BIL to PHX in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 4ºC (39ºF) and 21ºC (70ºF) on average.

Explore more of the United States

  • You've done Phoenix, now it's time to discover more of the United States. Travel around 483 kilometers west to San Diego to tick off its leading sights. From San Diego Zoo to San Diego Balboa Park and USS Midway Museum, there's plenty to keep you on the go.

  • Las Vegas is another essential stop in the United States and is around 418 kilometers north-west of Phoenix. No journey is complete without dropping by Ciudad del Pecado o Las Vegas, Las Vegas Strip and Fountains of Bellagio.

Plan the rest of your trip from Billings to Phoenix

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.