Cheap Flights from Boulder (WBU) to Phoenix (PHX)

Popular airlines from Boulder, CO (WBU-Boulder Municipal) to Phoenix Sky Harbor Intl. Airport (PHX)

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Frequently asked questions

How much does a flight from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX) cost?
Secure a cheap one-way flight or cheap return flight from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX)?
Planning your getaway for is a great way to save, as it's the cheapest month for flights between WBU and PHX. You'll usually find the lowest fares during the off-season.
Which airlines fly direct from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX)?
You can't fly directly from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX). However, you can find other airports that offer nonstop flights. Begin your journey at Denver Intl. Airport (DEN) and fly straight to Phoenix without any detours.
What is the cheapest airline that flies from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest WBU to PHX flight.
How many flights per day from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX)?
You'll have to hop on a flight with a layover if you're traveling from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from WBU to PHX?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX)?
Opt for a flight from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX) last-minute?
Last-minute bookings from WBU to PHX are typically more expensive. For the lowest rates, start looking for flights well in advance. That said, if you can play around with your travel dates, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a WBU to PHX flight and hotel package?
Booking a WBU to PHX flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our impressive range of hotels and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boulder, CO (WBU-Boulder Municipal) to Sky Harbor Intl. Airport (PHX)?
Typically, it's possible to reschedule or cancel your WBU to PHX flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Boulder Municipal
Destination airport
Sky Harbor Intl.
Distance
590 mi

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Boulder to Phoenix Flights

The cheapest times to fly from Boulder to Phoenix

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boulder to Phoenix are during the month of . You can find some of the cheapest flights from Boulder to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boulder to Phoenix

Sunday is one of the best days to book for cheap flights from Boulder to Phoenix: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boulder to Phoenix

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boulder to Phoenix in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boulder to Phoenix flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boulder to Phoenix airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Boulder to Phoenix Flights

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