$111 Cheap Flights from Trenton (TTN) to Phoenix (PHX)

View $111 flight on Thu, Oct 23, 2025Opens in a new window

Popular airlines from Trenton–Mercer Airport (TTN) to Phoenix Sky Harbor Intl. Airport (PHX)

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Cheap Flights from Trenton to Phoenix (TTN-PHX)

Prices were available within the past 7 days and start at $111 for one-way flights and $222 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Oct 23 - Sat, Oct 25
TTN
Trenton
PHX
Phoenix
$222 Roundtrip, found 1 hour ago
$222
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Trenton to Phoenix, returning Sat, Oct 25, priced at $222 found 1 hour ago
Frontier Airlines
Mon, Oct 20 - Wed, Oct 22
TTN
Trenton
PHX
Phoenix
$243 Roundtrip, found 1 day ago
$243
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Oct 20 from Trenton to Phoenix, returning Wed, Oct 22, priced at $243 found 1 day ago
Frontier Airlines
Mon, Oct 20 - Sat, Oct 25
TTN
Trenton
PHX
Phoenix
$244 Roundtrip, found 14 hours ago
$244
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Mon, Oct 20 from Trenton to Phoenix, returning Sat, Oct 25, priced at $244 found 14 hours ago
Frontier Airlines
Thu, Oct 23 - Sat, Oct 25
TTN
Trenton
PHX
Phoenix
$282 Roundtrip, found 1 hour ago
$282
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Trenton to Phoenix, returning Sat, Oct 25, priced at $282 found 1 hour ago
Frontier Airlines
Thu, Oct 16 - Wed, Oct 22
TTN
Trenton
PHX
Phoenix
$295 Roundtrip, found 12 hours ago
$295
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Thu, Oct 16 from Trenton to Phoenix, returning Wed, Oct 22, priced at $295 found 12 hours ago
Frontier Airlines
Thu, Oct 16 - Sat, Oct 18
TTN
Trenton
PHX
Phoenix
$296 Roundtrip, just found
$296
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 16 from Trenton to Phoenix, returning Sat, Oct 18, priced at $296 just found
Frontier Airlines
Mon, Oct 20 - Sat, Oct 25
TTN
Trenton
PHX
Phoenix
$304 Roundtrip, found 14 hours ago
$304
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Mon, Oct 20 from Trenton to Phoenix, returning Sat, Oct 25, priced at $304 found 14 hours ago
Frontier Airlines
Sat, Oct 18 - Wed, Oct 22
TTN
Trenton
PHX
Phoenix
$317 Roundtrip, found 5 hours ago
$317
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, Oct 18 from Trenton to Phoenix, returning Wed, Oct 22, priced at $317 found 5 hours ago
Frontier Airlines
Fri, Oct 10 - Sat, Oct 18
TTN
Trenton
PHX
Phoenix
$318 Roundtrip, found 8 hours ago
$318
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Fri, Oct 10 from Trenton to Phoenix, returning Sat, Oct 18, priced at $318 found 8 hours ago
American Airlines
Thu, Feb 19 - Mon, Feb 23
TTN
Trenton
PHX
Phoenix
$370 Roundtrip, found 2 days ago
$370
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Feb 19 from Trenton to Phoenix, returning Mon, Feb 23, priced at $370 found 2 days ago

Alternative airports near Phoenix

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sky Harbor Intl. PHX. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $589
PHX
Sky Harbor Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $589
Flights from Trenton (TTN) to Phoenix (PHX)
Origin airport
Mercer
Destination airport
Sky Harbor Intl.
Airlines serving
American Airlines, Frontier Airlines
Roundtrip price
$222
Distance
2093 mi

Trenton to Phoenix Flights

The cheapest times to fly from Trenton 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 Trenton to Phoenix are during the month of October. You can find some of the cheapest flights from Trenton to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Trenton to Phoenix

Sunday is one of the best days to book for cheap flights from Trenton 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 Trenton 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 Trenton to Phoenix in 2025. You can also book with separate airlines for your outbound and return journeys, from $111 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 Trenton 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 Trenton 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.

 

Frequently asked questions

How much does a flight from Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX) cost?
Secure a cheap one-way flight from $111 or cheap return flight from $222 from Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX)?
October is the cheapest month to fly from TTN to PHX. Traveling during quieter months is often the key to landing a great deal.
Which airlines fly direct from Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX)?
You can't fly directly from Trenton, NJ (TTN-Mercer) to Sky Harbor Intl. Airport (PHX). However, you can find other airports that have nonstop flights. Begin your journey at Liberty Intl. Airport (EWR) and travel straight to Phoenix without any detours.
What is the cheapest airline that flies from Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from TTN to PHX. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX)?
There aren't any daily direct flights departing from Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from TTN to PHX?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX)?
To avoid possible delays on the Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of being 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 Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX) last-minute?
Booking your ticket from TTN to PHX just before your getaway is typically more expensive. But if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a TTN to PHX flight and hotel package?
Compared with arranging flights and hotels separately, booking a TTN to PHX flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place will take the hassle out of planning your trip. Just pick your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Mercer Airport (TTN) to Sky Harbor Intl. Airport (PHX)?
If you booked your TTN to PHX flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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*Available to One Key members.