DLH to PHX, Duluth International Airport to Phoenix Sky Harbor International Airport Cheap Flights

Based on HopeGoo data, United Airlines offers one-way fares as low as US$237 on Cheapest nonstop routes (e.g. DLH to PHX on Wed, Mar 11), while Delta Air Lines offers Cheapest nonstop round-trips from US$344 departing on Tue, Apr 7 and returning on Sat, Apr 11.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Duluth to Phoenix is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

To find best deals on flights from Duluth to Phoenix, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Mar 11, with one-way flights priced at just US$237. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for Phoenix travel is around November. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Duluth to Phoenix is September, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Duluth to Phoenix on February 28, 2026 with Delta Air Lines, with prices starting at US$380.

The time difference between Phoenix and Duluth is 1h.

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