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Cheap Flights from Saint Louis to Phoenix (PHX)
Expected price increase
20%
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1 Passenger
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Adults 18+
Children 2-11
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Lap infants under 2
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Average price per month
- Low Season: June
- High Season: July
- Prices for this route are volatile and fluctuate from month to month.
- The cheapest flights are usually bought in June, January and April.
- High season months are August, May and July. However, it's not the rule and you should always search current flight deals.
Price increase as travel date approaches
- Flight prices for this route increase by 49% if you book last minute. Hover on the graph above to see for yourself!.
- To grab the lowest price possible, you should buy your flight around 25 days before departure!
- Consider booking at least 22 days before departure to increase your chances of getting a low price.
- Generally, it's safe to book between 90 and 60 days in advance.
Saint Louis to Phoenix Flight Information
| Flights Depart From | Saint Louis (BOS) |
| Flights Arriving To | Phoenix (EWR) |
| Distance | 322.42 km |
| Current Price | $46.97 |
| Good Deal | $66.48 |
| Cheapest Airlines | Frontier Airlines |
| Popular Airlines | Frontier Airlines |
| Flight Duration | 00 hours 49 minutes |
| Flights Depart From |
| Saint Louis (BOS) |
| Flights Arrive In |
| Phoenix (EWR) |
| Distance |
| 322.42 km |
| Flight Duration |
| 00 hours 49 minutes |
| Current Price |
| $46.97 |
| Good Deal |
| $66.48 |
| Cheapest Airlines |
| Frontier Airlines |
| Popular Airlines |
| Frontier Airlines |
Most Reliable Airlines flying to Phoenix
- According to our data, Frontier Airlines have the highest overall rating.
- The following airlines have the highest chance of on time arrivals: Frontier Airlines.
- If cleanliness is important for you then you should consider flying with Frontier Airlines.
| Airline | Overall Rating | On time arrival | Check-in & Boarding | Cleanliness | Customer Service | Food & Beverage | Entertainment | Legroom | Seat Comfort |
|---|---|---|---|---|---|---|---|---|---|
Frontier Airlines |
2.8 | 3.5 | 3.5 | 3.5 | 3.0 | 2.0 | 1.5 | 2.5 | 2.5 |
Overall Rating
3.0
On time arrival
3.5
Check-in & Boarding
3.5
Cleanliness
3.5
Customer Service
3.0
Food & Beverage
2.0
Entertainment
1.5
Legroom
2.5
Seat Comfort
2.5
Good to know:
- Sky Harbor International is the major airport in Phoenix and surrounding area.
Enter your preferred departure airport and travel dates into the search form above to unlock the latest Phoenix flight deals.
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Did you know that you could find even better deals when you use our Mobile App?. Awesome Deals
notifications_active In the past few days the following airlines offered the lowest prices from Saint Louis to Phoenix: , Frontier Airlines and ..
Tue, 08 Oct BOS EWR
Tue, 08 Oct EWR BOS Trip duration: 0 days$46.97- Sun, 06 Oct SEA LAS
Wed, 09 Oct LAS SEA Trip duration: 3 days$50.97 - Tue, 12 Nov PHX LAS
Thu, 14 Nov LAS PHX Trip duration: 2 days$50.97
Frontier AirlinesTue, 29 Oct ONT LAS
Fri, 01 Nov LAS ONT Trip duration: 3 days$52.97- Mon, 09 Dec PHX LAS
Fri, 13 Dec LAS PHX Trip duration: 4 days$52.97
Frontier AirlinesFri, 04 Oct PHX LAS
Fri, 04 Oct LAS PHX Trip duration: 0 days$56.97
Frontier AirlinesWed, 23 Oct ONT BLD
Tue, 29 Oct BLD ONT Trip duration: 6 days$56.97
Mon, 02 Dec YXX YYC
Sat, 14 Dec YYC YXX Trip duration: 12 days$56.97- Fri, 15 Nov PHX LAS
Mon, 18 Nov LAS PHX Trip duration: 3 days$56.98 - Fri, 04 Oct SAN LAS
Sun, 06 Oct LAS SAN Trip duration: 2 days$57.97 - Sun, 06 Oct SEA LAS
Wed, 09 Oct LAS SEA Trip duration: 3 days$57.97
Frontier AirlinesTue, 08 Oct LAX LAS
Tue, 15 Oct LAS LAX Trip duration: 7 days$57.97
Frontier AirlinesSat, 12 Oct SJC SAN
Tue, 15 Oct SAN SJC Trip duration: 3 days$57.97- Fri, 15 Nov PHX LAS
Mon, 18 Nov LAS PHX Trip duration: 3 days$57.98 - Thu, 12 Dec BOS CHS
Mon, 16 Dec CHS BOS Trip duration: 4 days$57.98
Frontier AirlinesTue, 08 Oct SFO LAS
Wed, 09 Oct LAS SFO Trip duration: 1 days$57.99
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Frequently Asked Questions
- How long is a direct flight from Saint Louis to Phoenix?A direct flight from Saint Louis to Phoenix takes roughly 00 hours 49 minutes.
- How many direct flights are there between Saint Louis to Phoenix daily?On average, there are 101 direct flights from Saint Louis to Phoenix each day.
- Which airlines offer cheap airfare from Saint Louis to Phoenix?That may change at any time. But in the past 14 days, the cheapest tickets we've found were with , Frontier Airlines and .
- Do I need my passport to fly from Saint Louis to Phoenix?Nope, not this time.
- Which airlines fly from Saint Louis to Phoenix most often?Frontier Airlines are the top.
- What's the cheapest day to fly from Saint Louis to Phoenix?That depends. Recently, the cheapest day to fly from Saint Louis to Phoenix has been Friday. And the cheapest return flight from Friday has been. That said, the cheapest departure days are constantly changing.
- Which airport will I be flying from in Saint Louis?When departing from Saint Louis you'll be flying out of Logan International.
- Which airport will I be flying from in Phoenix?When departing from Phoenix you'll be flying out of Newark Liberty International.
- How is Justfly.com so good at finding cheap flights?We've taken an oath of secrecy and vowed never to say. Just kidding. Our team and technology allows us to browse through hundreds of airlines and hundreds of thousands of flights to find the lowest prices. Then we pass the savings on to you.
- Can Justfly.com help me save money in any other way?We're glad you asked. We help you save money with our Fare Alerts, Price Trend charts and multi-ticket bookings. We also help you save on hotels and car rentals.
- How many airlines does Justfly.com search to find affordable flights?We typically search over 400 airlines.
- Can Justfly.com's Price Trend tool really tell me the best time to buy tickets?Absolutely! That's why we've made it accessible to you.
- Will the price of my flight change?Flight prices and availability change often. To counter this, we update the important data as often as possible every step of the way.
- How will I receive my booking confirmation and travel information?We'll send you an email with the important details!
- Can you cancel or change Justfly.com flights?You sure can. But give us a call first. We'll do our best to find a solution. However, in some cases, if we cancel your booking, we'll have to charge an administrative fee of $75 (domestic), $125 (trans-border between Canada and USA) and $200 (international).
- Are Justfly.com's tickets refundable?All bookings are currently non-refundable.
- How do I contact Justfly.com?To find answers to all of your questions, click here to visit our support page.