$54 Find Cheap Flights from Phoenix to Boulder - Compare and Save

When flying out of Phoenix Sky Harbor Intl Airport you’ll be using Phoenix Sky Harbor Intl. Boulder does not have its own airport so you’ll be flying into nearby Denver Intl airport, which is 33.4 mi away.

Direct flights cover the 601 miles separating Phoenix Sky Harbor Intl Airport and Boulder in about 1h 40m.

58 direct flights run between Phoenix Sky Harbor Intl Airport and Boulder on a daily basis. On average, there are about 406 departures each week.

Consider leaving on a Friday and avoid Saturdays if you are looking for the best rates. For your return to Phoenix Sky Harbor Intl Airport, you’ll find the best rates on Fridays and the most expensive ones on Thursdays.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Phoenix to Boulder.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boulder from Phoenix is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boulder with an airline and back to Phoenix with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boulder from Phoenix up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

In the last 5 days, the cheapest one-way ticket between Phoenix Sky Harbor Intl Airport and Boulder found on KAYAK was with Frontier for $33. Frontier offered a round-trip connection from $61 and United Airlines from $143.