BOI - SJU

$450 Find Cheap Flights from Boise to San Juan

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to San Juan departing on 2/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to San Juan, 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 Boise to San Juan, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$450
Typical prices: $510-$738
Southwest
Sun 2/8Sat 2/14
BOI - SJU • 2 stops
Cheapest one-way
Multiple Airlines
Mon 11/10
BOI - SJU • multi-stop
Top airlines
Southwest
Cheapest • from $450 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 3% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 21% price drop
June
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 San Juan!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to San Juan (BOI-SJU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to San Juan 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 Boise to San Juan

Sun, Feb 8 - Sat, Feb 14
Southwest Logo
11:20 am - 12:35 amBOI-SJU
10h 15m2 stops
Southwest Logo
2:10 pm - 10:50 pmSJU-BOI
11h 40m2 stops
$450Southwest
Find Deal
Tue, Mar 3 - Wed, Mar 4
United Airlines Logo
6:25 am - 6:25 pmBOI-SJU
9h 00m1 stop
United Airlines Logo
2:25 pm - 9:32 pmSJU-BOI
10h 07m1 stop
$485United Airlines
Find Deal
Sun, Feb 8 - Sat, Feb 14
United Airlines Logo
6:10 am - 6:25 pmBOI-SJU
9h 15m1 stop
United Airlines Logo
8:35 am - 9:32 pmSJU-BOI
15h 57m2 stops
$495United Airlines
Find Deal
Fri, Nov 28 - Tue, Dec 9
American Airlines Logo
7:00 am - 12:44 amBOI-SJU
14h 44m2 stops
American Airlines Logo
7:00 am - 10:25 pmSJU-BOI
18h 25m1 stop
$508American Airlines
Find Deal
Fri, Feb 6 - Mon, Feb 9
Southwest Logo
5:30 am - 10:25 pmBOI-SJU
13h 55m2 stops
Southwest Logo
7:00 am - 3:50 pmSJU-BOI
11h 50m2 stops
$545Southwest
Find Deal
Mon, Dec 1 - Thu, Dec 4
American Airlines Logo
5:25 pm - 10:10 amBOI-SJU
13h 45m2 stops
American Airlines Logo
12:49 pm - 11:39 pmSJU-BOI
13h 50m2 stops
$548American Airlines
Find Deal
Sat, Mar 7 - Wed, Mar 11
Delta Logo
4:49 pm - 12:07 pmBOI-SJU
16h 18m2 stops
Delta Logo
6:15 am - 10:06 pmSJU-BOI
17h 51m2 stops
$625Delta
Find Deal
Mon, Dec 1 - Thu, Dec 4
Alaska Airlines Logo
1:25 pm - 6:10 amBOI-SJU
13h 45m1 stop
Alaska Airlines Logo
7:00 am - 10:03 pmSJU-BOI
18h 03m1 stop
$628Alaska Airlines
Find Deal
Mon, Dec 1 - Thu, Dec 4
Alaska Airlines Logo
1:25 pm - 6:10 amBOI-SJU
13h 45m1 stop
Alaska Airlines Logo
7:00 am - 10:03 pmSJU-BOI
18h 03m1 stop
$667Alaska Airlines
Find Deal
Sun, Nov 30 - Thu, Dec 4
Delta Logo
11:35 pm - 12:46 pmBOI-SJU
10h 11m1 stop
Delta Logo
2:10 pm - 12:42 amSJU-BOI
13h 32m2 stops
$749Delta
Find Deal
Booking Insights

KAYAK's insights & trends for Boise to San Juan flights

Get data-powered insights and trends into flights from Boise to San Juan to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boise to San Juan Luis Munoz Marin Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to San Juan Luis Munoz Marin Intl Airport departing in February.

What’s the cheapest day of the week to fly from Boise to San Juan?

The average price of all round-trip flights from Boise to San Juan Luis Munoz Marin Intl Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to San Juan on a Monday and more expensive on a Saturday. On your return trip to Boise, you should consider flying back on a Wednesday, and avoid Fridays for better deals.

What is the cheapest month to fly from Boise to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boise to San Juan Luis Munoz Marin Intl Airport, 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 Boise to San Juan Luis Munoz Marin Intl Airport is September, where tickets cost $495 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $725 and $715 respectively.

How far in advance should I book a flight from Boise to San Juan Luis Munoz Marin Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boise to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boise to San Juan Luis Munoz Marin Intl Airport, you should book around 2 weeks before departure, which saves you about 3% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$450
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Boise to San Juan

When to book flights from Boise to San Juan

Are your dates flexible? Find out the best times to travel from Boise to San Juan 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 Boise to San Juan flights

  • What is the cheapest flight from Boise to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from Boise to San Juan Luis Munoz Marin Intl Airport was $450 for a round-trip ticket.

  • Do I need a passport to fly between Boise and San Juan?

    A passport is required to fly from Boise to San Juan.

  • Which aircraft models fly most regularly from Boise to San Juan?

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

  • Which airline alliances offer flights from Boise to San Juan?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Boise and San Juan, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Boise to San Juan, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Boise to San Juan are Southwest and Delta. With an average price for the route of $644 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $558 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Boise to San Juan?

    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 Boise to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boise to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Boise 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 Boise to San Juan?

    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 San Juan with an airline and back to Boise with another airline. Booking your flights between Boise and SJU 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 Boise to San Juan?

    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 San Juan from Boise up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Boise to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Boise to San Juan. 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 Boise to San Juan? 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.
8.0
SouthwestOverall score based on 4238 reviews
7.5Entertainment
8.6Crew
7.0Food
8.0Comfort
8.1Boarding
Airline reviews

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

8.0 ExcellentTODD, Nov 2025DAL - CMH
Read more Southwest reviews

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

We were very rushed by a staff member at the gate when transferring from American Airlines to Fijian. Then the plane stayed put for ages anyhow! The plane was delayed and my bag sent to San Francisco instead of Fiji

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

We loved the steward on the plane. He made the night enjoyable

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

Everything you need to know for your flight from Boise to San Juan

Information on your arrival and departure airports