BOS - UST

Find cheap flights from Boston to St. Augustine

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Augustine

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to St. Augustine, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to St. Augustine, as well as popular online travel agencies
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Everything you should know

Avoid delays
United Airlines
Most punctual • 90% on-time
Morning flights
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to travel
June
Cheapest • 100% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Augustine!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to St. Augustine that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to St. Augustine

Multiple Airlines Logo
BOS
-
UST
1031 mimulti-stop
Multiple Airlines Logo
UST
-
BOS
1031 mimulti-stop
Multiple Airlines
Booking Insights

KAYAK's insights & trends for Boston to St. Augustine flights

Get data-powered insights and trends into flights from Boston to St. Augustine to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to St. Augustine, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to St. Augustine is June, where tickets cost $0 (return) on average. On the other hand, the most expensive months are February and April, where the average cost of round-trip tickets is $367 and $317 respectively.

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Good to know

Low seasonAugust
Best time to beat the crowds with an average 42% drop in price.
Most popular time to fly with an average 7% increase in price.

When to book flights from Boston to St. Augustine

Are your dates flexible? Find out the best times to travel from Boston to St. Augustine based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to St. Augustine

  • Do I need a passport to fly between Boston and St. Augustine?

    No, a passport isn't needed to fly from Boston to St. Augustine. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Boston to St. Augustine?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Boston to St. Augustine?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to St. Augustine.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to St. Augustine?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Augustine from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to St. Augustine?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Augustine with an airline and back to Boston with another airline. Booking your flights between Boston and UST can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to St. Augustine?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Augustine from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boston to St. Augustine

 
See real verified KAYAK customer reviews for airlines flying from Boston to St. Augustine. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to St. Augustine? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
JetBlueOverall score based on 2982 reviews
7.3Boarding
6.6Food
7.5Comfort
7.9Crew
7.2Entertainment
Airline reviews

It was inexplicably canceled and we are stuck in LA, haven't gotten home and it has been an inconvenience having lost work (on unpaid leave for my husband).

2.0 MediocreAnonymous, Jun 2026
LAX - FLL
Read more JetBlue reviews

It was inexplicably canceled and we are stuck in LA, haven't gotten home and it has been an inconvenience having lost work (on unpaid leave for my husband).

I like everything. Blythe at DCA is the absolute best!

The flight was delayed after already taxiing from the gate due to a malfunction. After 3 hours we were told the flight was canceled. The next flight available was Sunday. My daughter and I stayed overnight in the airport due to this issue. I was given a $12 meal voucher. Unacceptable

Whole experience was poor. Delayed 2 hours. Lied about the delays. Was all jet blues fault and tried to blame on air traffic control. Sent out other let trips and wouldn't allow people to switch aircraft.

My bag was not loaded on my flight. it was not communicated to me until i was waiting for my bag at my destination. there was no confirmation of when my bag was arriving and no way to track it.

Nice plane, clean, wifi available and movies. All the flight attendants were courteous.

The gate attendant in Boston had a high raspy voice and spoke much too fast to be understood. Not pleasant.

It was fine for what it was. It’s not luxury travel but it was efficient, for the most part. Having my carry-on transferred into luggage however, was unwelcome.

We had better-than-average leg room and I loved the access to shows and movies. During boarding, we could not hear the agent even though we were close to the boarding door, which was kind of scary when we realized that half of the passengers had already boarded. Also, the entertainment was awesome, but I could not hear the movie as well as I would have liked, because my headphones were crappy. It would have been better if I could connect my own ear buds via Bluetooth or if JetBlue provided headphones.

On time, friendly attendants, quick wheelchair assistance and help checking in bags. Also appreciated change in seats, more forward to make it easier for my 97 year old mother to board and exit the plane. Thank you, JetBlue!

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

Information on your arrival and departure airports

Boston (BOS)
St. Augustine (UST)