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St. Augustine

Cheap flights from Boston to St. Augustine (BOS - UST)

BOS — UST
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Boston to St. Augustine

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to St. Augustine (UST). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 15, 2025.

Popular in

July

Cheapest in

November

Average price

$254
Highest demand for flights based on searches. 28% potential increase in price ($109 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Best time to book a flight from Boston to St. Augustine

Have a flexible travel schedule? Discover the best time to fly to St. Augustine from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to St. Augustine

What is the cheapest time of day to fly from BOS to UST?

Find hourly flight availability from Boston to St. Augustine. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Boston to St. Augustine in the afternoon. If you’re flexible enough to do this you can expect to save up to 45% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Boston to St. Augustine?

Use this chart to determine the cheapest time to fly round-trip from Boston to St. Augustine. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Boston to St. Augustine flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing St. Augustine

Get insights into the airlines that provide service to St. Augustine. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Augustine. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Delta and JetBlue from Boston to St. Augustine to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,954 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.
JetBlue
7.2
Good
2,912 reviews
Delta
8.0
Very good
7,954 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
2.0
Mediocre

Joseph,Aug 2023

MSP - MCO

Even if you have delta comfort plus, they will move your overhead bag. One of the perks for upgrading is that you have dedicated space for your carry on with comfort plus with delta. They moved my carry on luggage (3) compartments back and put in bags for other passengers that should have gone under their respective seats. When deboarding the plane, there was no help from anyone to retrieve my luggage back several rows. Delta is turning into pure garbage.

Related info for your journey

Find useful and relevant information for your journey from Boston to St. Augustine. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Boston to St. Augustine round-trip?

    According to our current data, Delta ($83), and JetBlue ($157) offers the cheapest pricing from Boston to St. Augustine. Users have found that Delta is 70% cheaper than the other options available to this destination.

  • Can I find deals for flights from Boston to St. Augustine that include hotel bookings?

    Yes. In addition to deals on Boston to St. Augustine flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to St. Augustine?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to St. Augustine.

  • Can I find deals for business class flights from Boston to St. Augustine?

    Yes. Cheapflights offers flight deals from Boston to St. Augustine by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near St. Augustine?

Book flights to St. Augustine if you plan to visit one of these locations
Vilano Beach

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Top 2 airlines flying from Boston to St. Augustine

Discover the top 2 airlines that operate flights from Boston to St. Augustine. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$83Average$323FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$157Average$247FlexibilityNo cancel feeOn-time62%

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