Cheap flights from Boston to Phoenix from $139

If you are unable to visit Phoenix during the month of August, then departing from Boston during the month July is also very affordable. Most momondo users find prices during this month for around $168.

On average, the least expensive day to fly to Phoenix from Boston is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $388. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $488.

The cheapest time of day to fly to Phoenix is in the evening when flights can be purchased for as low as $356. In the morning is when there is more demand to fly to Phoenix, so prices are often more expensive at around $438 per ticket.

Fly from Boston Logan Intl to Phoenix Sky Harbor Intl for the best Boston Logan Intl - Phoenix flight prices

You are more likely to see cheaper flights to Phoenix from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Phoenix for around $371 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phoenix from Boston for as low as $333 on momondo.

There are 4 cabin classes available to choose from on Boston to Phoenix flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest and Allegiant Air are the most popular carriers operating from Boston Logan Intl to Phoenix

American Airlines, Delta and JetBlue are the top three most popular airlines that fly to Phoenix from Boston according to our data. American Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Phoenix. Keep in mind that there are 6 different airlines that fly to Phoenix on a routine basis, so you have a few additional options to choose from.

Historically, on average around 18% of flights between Boston and Phoenix have experienced a delay on any given week. The average delay length over the past 12 months has been 153 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, American Airlines have had the least number of delays on this route over the last 12 months; with about 15% of their flights experiencing any sort of delay.

The number of flights available between Boston and Phoenix is 6 per day as of June 2026. The most frequent departure time is 5:00PM, with 72% of daily flights leaving in the afternoon.

As of June 2026, there are 48 flights per week flying from Boston to Phoenix. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.