BOI - SJU

$486 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 5/2. 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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Everything you should know

Cheapest round-trip
$486
Typical prices: $686-$582
United Airlines
Sat 5/2Tue 5/5
BOI - SJU • 1 stop
Top airlines
Cheapest • from $486 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boise and San Juan. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $688 (round-trip)
Shortest trip • 9h 13m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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

Sat, May 2 - Tue, May 5
United Airlines Logo
6:30 am - 5:38 pm
BOI
-
SJU
9h 08m
1 stop
United Airlines Logo
7:20 am - 10:50 pm
SJU
-
BOI
17h 30m
2 stops
$486United Airlines
Sun, Apr 26 - Thu, Apr 30
Southwest Logo
9:10 pm - 1:10 pm
BOI
-
SJU
14h 00m
2 stops
Southwest Logo
10:00 am - 12:45 am
SJU
-
BOI
16h 45m
2 stops
$516Southwest
Tue, Sep 1 - Wed, Sep 9
Southwest Logo
6:25 am - 10:00 pm
BOI
-
SJU
13h 35m
2 stops
Southwest Logo
11:50 am - 11:10 pm
SJU
-
BOI
13h 20m
2 stops
$526Southwest
Mon, Apr 27 - Fri, May 1
United Airlines Logo
6:15 am - 5:38 pm
BOI
-
SJU
9h 23m
1 stop
United Airlines Logo
1:40 pm - 9:17 pm
SJU
-
BOI
9h 37m
1 stop
$555United Airlines
Wed, Jul 29 - Sun, Aug 2
Delta Logo
7:28 pm - 12:55 pm
BOI
-
SJU
15h 27m
2 stops
Delta Logo
2:05 pm - 11:46 pm
SJU
-
BOI
11h 41m
2 stops
$561Delta
Sun, Apr 26 - Thu, Apr 30
American Airlines Logo
6:26 pm - 9:13 am
BOI
-
SJU
12h 47m
2 stops
American Airlines Logo
6:45 am - 10:54 pm
SJU
-
BOI
18h 09m
1 stop
$571American Airlines
Sun, May 10 - Fri, May 15
Delta Logo
11:39 pm - 1:38 pm
BOI
-
SJU
11h 59m
1 stop
Delta Logo
2:48 pm - 10:28 pm
SJU
-
BOI
9h 40m
1 stop
$576Delta
Sat, May 16 - Tue, May 26
American Airlines Logo
6:26 pm - 9:13 am
BOI
-
SJU
12h 47m
2 stops
American Airlines Logo
12:44 am - 1:29 pm
SJU
-
BOI
14h 45m
2 stops
$599American Airlines
Sat, May 2 - Tue, May 5
United Airlines Logo
6:30 am - 5:38 pm
BOI
-
SJU
9h 08m
1 stop
United Airlines Logo
1:40 pm - 9:17 pm
SJU
-
BOI
9h 37m
1 stop
$614United Airlines
Wed, Jul 29 - Sun, Aug 2
Delta Logo
7:28 pm - 12:55 pm
BOI
-
SJU
15h 27m
2 stops
Delta Logo
12:56 pm - 10:32 pm
SJU
-
BOI
11h 36m
1 stop
$631Delta
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 May.

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 November and February, where the average cost of round-trip tickets is $793 and $791 respectively.

Good to know

Low seasonSeptember
Cheapest flight$486
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 5% lower on average.
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 $486 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, SkyTeam, and Star Alliance 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 $594 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 $581 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 4328 reviews
8.6Crew
7.0Food
8.0Comfort
7.5Entertainment
8.1Boarding
Airline reviews

The new boarding process was easy and straightforward. Very pleasant.

10.0 ExcellentAnonymous, Apr 2026
LAS - OKC
Read more Southwest reviews

The new boarding process was easy and straightforward. Very pleasant.

The flight was okay. The pilots did an amazing job and kept us updated on the flight. The flight attendants were okay. They found time to be chatty with each other rather than focus on the guests. One of the attendants was a little less warm when asking about my bag I had on my lap that I was using during latter part of the mid- flight. Mind you, it was not the departure descent. I’m respectful to each and every attendant, it was the tone in her voice reminding me to place my carryon bag on the floor. I hope to have a better experience next time.

The entire travel day was a disaster from beginning to end. Woke up at two in the morning to make it to San Juan airport in time for a 5:30 am flight to Milwaukee which connected in Baltimore. Massive delays lead to me missing original connection out of Baltimore. Sixteen hours of delays/rebooking/layover time later, arrived in Milwaukee to find that only one of two checked bags made it there (despite the fact that Southwest brought another 737 jet to San Juan to fly us out to our original Baltimore connection—-not squeezed into another booked flight). The flight from Baltimore to Milwaukee was barely half full, so there was no logical reason to ship my bags out of Baltimore on a different flight to Chicago to then ship to Milwaukee. Southwest decided that my bags should not have been on the same connecting flight I WAS ON to Milwaukee, and then proceeded to accidentally leave my larger bag with the important items in Chicago. Terrible logic and support all around. Extremely angered and disappointed with SW. What a clownish operation your company has become!

It was as expected and I was grateful for the wheel chair help and ease of use.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Communication about the delayed flight was poor. We were told to move gates three times but that was bad information. We went from gate 128 to gate 126 and then to gate 123 and back to gate 126. Communication about the delay was bad. Ended up being 1 1/2 hour late getting home.

Plane was late. Zero service for 2+ hour flight and it was not that bumpy.

Boarding was good. The flight was on time ( arrival was 20 minutes early). Inflight service was average ( US airlines have not mastered the skills of customer service yet). The food was mediocre. “ breakfast “ was downright awful and insulting. It was a piece of dough with mon descript filling that was supposed to be cheese omelette).

The tray table was broken and the food was terrible.

The gentleman at the gate I think his name is RIE was exceptional

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

No entertainment. Plane was so small had to pink tag a carry on ive used for 20 years easily on board. The fact the flight got in at midnight, had to wait for crew in fort wayne to allow the plane to approach the gate, THEN had to wait for bag on jet bridge made experience irritating at best.

Crew was great. Near on time departure and early arrival. Snacks are always meh. Not a fan of the "pay for everything including miles " proposal unless base flight rate going to be 100 bucks.

Would have been better if there was a nonstop flight from Tampa to Norfolk or Tampa to New Port News.

Overall Good! The weather delayed our takeoff from Atlanta and our arrival in Miami! If Mother Nature can mess up a flight she will do it every time!

The flight was smooth, the crew was great but the plane was quite old

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

Due to cancellation of connecting flight (Lufthansa) I didn’t fly with United

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

I almost missed my flight and they helped me out enormously

Business class was very good, one of my best flights

The "on the ground" A/C was not working. It was so hot while waiting to get in the air, a passenger from the rear of the plan declared "I just can't!" and waited in the gangway until time to close the doors. It was miserable. But the crew were champs and had an amazing attitude. I know they were as miserable as we were but didn't let that affect their performance.

The captain announced to the cabin there would be a delay because they observed a "cut" on a tire during precheck that needed to be cleared by maintenance. We were delayed during this inspection and allowed to proceed after maintenance "measured the cut and decided it was acceptable". My complaint is not about the delay or due diligence. I wish the captain had been more generic when making his announcement. I was a nervous wreck all the way to Charlotte worried that we would have a blowout when landing!

The SFO Lounge crew were amazing. The bartender Faris was great. Thanks!

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Very good I can’t complain one bit. Thank you American Airlines for making my flight enjoyable and safe!

American Airlines is a miserable experience. It is predictably miserable, in the sense that every time I fly American, I brace myself for the certainty that it will be unpleasant and uncomfortable. But it is unpredictable in the sense that I never know if the flight will be on time or delayed nine hours (both happened to me this week). I never know if I will be able to sit in the seat that I selected when I purchased the ticket or if I will be told by Customer Service (!!!) that I must relocate from first class to a seat in the back of the aircraft with no explanation (both happened to me this week). Will the food be frozen and half defrosted, or scalding hot? Will the drinks be warm? Will the flight attendants be surly and mean? Will the toilets be cramped and foul? Will the seats be narrow and uncomfortable? Will there be a real electric outlet at the seat, or just an unreliable USB-2 port? Will there be enough seats in the boarding lounge or just a few? Will the boarding process be smooth and efficient, or will the gate agents mess it up and delay it needlessly for 30 or 40 minutes? Will the catering and cleaning crew be prompt or will they take an extra 30 minutes? Will the brakes on the aircraft work properly, or will the pilot delay takeoff for four hours while the ground crew attends to what can only be described as routine maintenance that should have been done the night before? I've eexperienced every one of these unpleasant things this year, 2026. The only thing I can reliably count on is that American will find a new way to make the experience of flying as miserable as they possibly can.

Flight was fine, but not having WiFi was a major negative

Friendly crew is the only nice thing. Seats uncomfortable. Food and snacks horrible. Movies were the same as the first 10 hour flight two weeks before

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

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