BOI - SJU

$395 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 3/2. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$395
Typical prices: $643-$930
Delta
lun. 3/2mié. 3/11
BOI - SJU • 2 stops
Cheapest one-way
Multiple Airlines
lun. 10/27
BOI - SJU • multi-stop
Top airlines
Delta
Cheapest • from $395 (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 11% 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

lun., mar. 2 - mié., mar. 11
Delta Logo
7:30 pm - 4:51 pmBOI-SJU
18h 21m2 stops
Delta Logo
6:15 am - 8:13 pmSJU-BOI
15h 58m2 stops
$395Delta
Find Deal
mar., feb. 17 - mar., feb. 24
Southwest Logo
7:45 am - 12:40 amBOI-SJU
13h 55m2 stops
Southwest Logo
6:10 am - 3:20 pmSJU-BOI
12h 10m2 stops
$413Southwest
Find Deal
mar., feb. 3 - jue., feb. 12
Delta Logo
4:41 pm - 1:05 pmBOI-SJU
17h 24m2 stops
Delta Logo
6:15 am - 8:13 pmSJU-BOI
16h 58m2 stops
$460Delta
Find Deal
mar., mar. 3 - mié., mar. 4
United Airlines Logo
7:11 am - 12:36 amBOI-SJU
14h 25m2 stops
United Airlines Logo
7:45 am - 8:55 pmSJU-BOI
16h 10m2 stops
$480United Airlines
Find Deal
mié., feb. 25 - mar., mar. 3
United Airlines Logo
7:11 am - 12:36 amBOI-SJU
14h 25m2 stops
United Airlines Logo
8:35 am - 9:32 pmSJU-BOI
15h 57m2 stops
$485United Airlines
Find Deal
vie., ene. 30 - sáb., feb. 7
American Airlines Logo
5:54 pm - 10:48 amBOI-SJU
13h 54m2 stops
American Airlines Logo
6:00 am - 7:25 pmSJU-BOI
16h 25m2 stops
$509American Airlines
Find Deal
mar., feb. 17 - mar., feb. 24
American Airlines Logo
11:35 am - 10:07 amBOI-SJU
19h 32m2 stops
American Airlines Logo
4:37 pm - 11:01 amSJU-BOI
21h 24m2 stops
$541American Airlines
Find Deal
mar., mar. 17 - mié., mar. 18
Alaska Airlines Logo
1:44 pm - 3:55 amBOI-SJU
12h 11m1 stop
Alaska Airlines Logo
6:54 am - 9:15 pmSJU-BOI
16h 21m1 stop
$623Alaska Airlines
Find Deal
lun., dic. 1 - jue., dic. 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
dom., nov. 16 - dom., nov. 23
Southwest Logo
5:40 pm - 10:25 amBOI-SJU
13h 45m2 stops
Southwest Logo
6:40 am - 4:10 pmSJU-BOI
12h 30m2 stops
$648Southwest
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 March.

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 11% 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$395
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 13% 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 $395 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 $650 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 $587 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 4235 reviews
7.0Food
8.6Crew
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

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

10.0 ExcellentAnonymous, Oct 2025MDW - BWI
Read more Southwest reviews

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.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

mandatory demand customer to check their carry on because not enough people check bags.

Connecting flight is on time and boarding was a breeze!

Excellent. Would encourage Southwest to keep current boarding procedures with free style seating. Makes for a fantastic experience

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.

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The person I bought the ticket for didn’t make the flight.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Friendly and professional flight crew. Aside from departure delay after boarding, easy flight and smooth landing.

Great smooth flight. Had a seating change, but that was an improvement. Thanks United Airways Crew.

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

We are too tired and frustrated to comment politely at this point

Terrible. Our luggage was delayed and couldn’t be delivered for several days. We got bad information from the airline agents at baggage claim. We had to pick up our car so we wouldn’t be charged for an extra day. We got lost in the maze of airport parking. The baggage claim agents didn’t offer us any compensation for our extra time and expense. We are tired, hungry and very frustrated.

The flight was flawless and we even arrived between 20 and 25 minutes early!

The only thing to like was that we eventually got to our destination

Delayed delayed delayed and no offer for food or vouchers

Disliked having to wait a little longer to disembark from the plan when we landed in London

Typically flights with AA are good. The staff are pleasant, welcoming, and efficient.

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

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

Information on your arrival and departure airports

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