When and Where to Book Flights to Puerto Rico in 2026 to Pay Less

Published: 8 October 2026 · Author: Ziling Liu, Personal Finance Editor, ShopBack

ShopBack US is a free cashback app and website. You go through ShopBack, book on sites like Expedia, Priceline or CheapOair as usual, and part of what you spent comes back to you as cash. Sign up for ShopBack before you search for your Puerto Rico dates.

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When and where should I book flights to Puerto Rico to pay less?

Book about 9 weeks before you fly, aim for January or other quieter months, and price your trip on at least two booking sites before you pay. Here is the short version, all from KAYAK's published data for flights to San Juan at the time of writing:

• When to fly: January is the cheapest month, at about $328 round trip on average.
• When to book: about 9 weeks ahead. KAYAK says booking in that window typically costs about 9% less than the average last-minute fare (within 2 weeks of the flight).
• Which day: Monday is the cheapest day to fly, at about $394 round trip on average, and Saturday the priciest, at about $420.
• Time of day: afternoon departures averaged about $385, against about $425 for morning flights.
• Where from: Florida. Round trips from Miami averaged about $263 and from Fort Lauderdale about $285.
• What counts as a deal: KAYAK says round trips under $279 are a good deal, and a quarter of its users found fares at or below that.

Where to book: compare the same flight on Expedia, Priceline and CheapOair, check the airline's own site, and book the lowest total. Booking through ShopBack lowers the cost of the trip, and you still book on the site you chose.

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Cheapest month for flights to Puerto Rico: the price data for 2026

January is the cheapest month to fly to Puerto Rico, and December and June are the most expensive, on KAYAK's 12-month data at the time of writing. KAYAK works out each month's figure by taking all fares found for that month over the last 12 months, removing the top 0.1% as outliers, and using the median.

Measure (round trip to SJU)	KAYAK figure at the time of writing
Average from the US, past 12 months	about $387
Cheapest month	January, about $328
Most expensive months	December (about $459) and June (about $429)
Cheapest day to fly	Monday, about $394
Most expensive day	Saturday, about $420
Cheapest time of day	Afternoon, about $385
Most expensive time of day	Morning, about $425
Good deal threshold	under $279
Best booking window	about 9 weeks ahead, about 9% below last-minute fares

What this means for a 2026 or early 2027 trip. On these averages, a January round trip runs about $131 less than a December one per person. For a family of four, that is about $524 on the flights alone. KAYAK also notes that October sees an average 49% drop in travelers to San Juan, so it is a quieter time to visit if you want fewer crowds.

Weather and timing. The Atlantic hurricane season runs from June 1 to November 30, according to the US National Hurricane Center. That overlaps with some of the quieter, cheaper weeks, so if you book in that window, read the airline's change rules before you pay.

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Flights to Puerto Rico: what to know before you search

Puerto Rico is a US territory, so flights from the mainland are domestic and US citizens do not need a passport. That keeps booking simple: you search it like any other US route.

• Main airport: Luis Muñoz Marín International Airport (SJU) in Carolina, next to San Juan. According to its Wikipedia entry, SJU handled about 13.6 million passengers in 2025 and carries about 93% of passenger traffic into Puerto Rico. KAYAK puts it about 4.2 miles from downtown San Juan.
• Nonstop flights every day: KAYAK lists daily nonstop service from several US cities, with nonstop times of about 2 hours 49 minutes from Tampa, 3 hours 25 minutes from Atlanta, 4 hours from Boston and 4 hours 34 minutes from Dallas/Fort Worth.
• Airlines: KAYAK names Frontier, JetBlue, American Airlines and United as the most popular airlines with its users over the past 3 months, and JetBlue as the carrier with the most flights, at about 225 a week.
• Fare types: compare like with like. A basic fare that includes only a personal item can end up costing more than a standard fare once you add a carry-on or checked bag.

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Flights to Puerto Rico best deals in the US for 2026

The best deals usually come from combining a cheap month, a cheap departure city and the right booking window, rather than waiting for one flash sale. Here is how to stack the odds in your favor:

1. Start from a Florida airport if you can. Miami, Fort Lauderdale and Orlando produced the lowest fares on KAYAK's data, with the cheapest quarter of round trips starting at about $187 from Miami, $219 from Fort Lauderdale and $221 from Orlando.
2. Pick January, or avoid December and June. On KAYAK's averages, that alone can save more than $100 per person.
3. Book around 9 weeks out. Waiting until the last 2 weeks typically cost about 9% more.
4. Fly on a Monday, in the afternoon. Both came out cheapest on KAYAK's 12-month data.
5. Watch the late-November sales. In 2026, Black Friday is Friday 27 November, Cyber Monday is Monday 30 November and Travel Tuesday is Tuesday 1 December. Booking sites and airlines often run fare sales around these days, which is a good time to price a January trip.
6. Price a package. If you also need a hotel in San Juan, a flight and hotel package can come in under the two parts booked separately.
7. Before you check out, go through ShopBack to get a post-purchase discount on the order.

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Expedia, Priceline and CheapOair: booking flights to Puerto Rico in the US

All three sell flights from across the US to San Juan, and each has its own way to save, so the cheapest one depends on your dates. Here is what each offers.

Expedia

Expedia sells flights, hotels and flight and hotel packages. Its free One Key rewards programme lets members earn OneKeyCash on eligible bookings across Expedia, Hotels.com and Vrbo. For a beach trip where you need both a flight and a hotel, Expedia's package search is a quick way to see the bundled price. Book through ShopBack's Expedia page.

Priceline

Priceline sells flights, hotels, rental cars and packages. Its free Priceline VIP programme gives members tiered perks as they book more. It is worth checking if you also need a rental car to drive out of San Juan to places like El Yunque or the west coast. Book through ShopBack's Priceline page.

CheapOair

CheapOair is a flight-focused booking site that searches fares from many airlines in one place. It is a good extra check when you are comparing routes with a connection, for example from a smaller US city. Book through ShopBack's CheapOair page.

Other places to price Puerto Rico flights and stays include Trip.com, Booking.com and Hotels.com, as well as the airlines' own websites.

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Expedia vs Priceline for flights to Puerto Rico: price comparison 2026

Neither site is always cheaper; the price for the same flight can differ between them depending on the day, so compare the full checkout total. Use this checklist to compare fairly:

Check	Why it matters
Same flight number, date and fare type	A basic fare and a standard fare are different products
Total at checkout, including taxes and fees	The search results price is not always the final price
Bag fees for your airline	Bags can change which fare is really cheapest
Package price vs separate booking	A flight and hotel bundle can beat the two parts on their own
Change and cancellation rules	Useful during hurricane season, June 1 to November 30
Rewards you will actually use	OneKeyCash on Expedia or Priceline VIP perks

Once you have the lower total, the last step is the same on either site: open it from ShopBack US before you pay.

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How ShopBack US lowers what you pay for a Puerto Rico trip

Booking through ShopBack lowers the cost of the trip, and you still book on the site you chose. You keep the same fare, the same airline and the same booking site; ShopBack is simply the step you take before you pay.

Before you check out, go through ShopBack to get a post-purchase discount on the order. A worked example with an illustrative rate: two round trips to San Juan at KAYAK's $387 average come to $774. At an illustrative 3%, $23.22 comes back, so the effective price is $750.78. Check the live rate on the store's ShopBack page, because rates change and some bookings, such as flight-only bookings on some stores, may be treated differently. CheapOair works differently: ShopBack pays a fixed cash amount on eligible CheapOair bookings, so your effective price is what you pay at checkout minus that amount; the live amount is on CheapOair's ShopBack page.

Cashback lowers what you actually pay for an order. It comes back as cash, so it works like a discount on the price, not like points or miles that you can only redeem with one airline.

How to do it:

1. Open ShopBack US in the app or on the website.
2. Choose Expedia, Priceline or CheapOair and activate it.
3. Book your Puerto Rico flight, hotel or package in the same session, as usual.
4. Cash comes back to your ShopBack account once the store confirms the booking.

Our guide on earning cashback on travel bookings covers the details, when to book flights has more timing tips, and the US travel cashback hub lists more travel stores.

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Frequently asked questions

What is the cheapest month to fly to Puerto Rico?

January, according to KAYAK's data for the past 12 months at the time of writing. Round trips from the US to San Juan (SJU) averaged about $328 in January, compared with about $459 in December and $429 in June, the two priciest months.

How much is a flight to Puerto Rico from the US?

About $387 round trip on average, based on KAYAK's data for the past 12 months at the time of writing. Fares from Florida tend to cost less: round trips from Miami averaged about $263 and from Fort Lauderdale about $285. KAYAK counts anything under $279 as a good deal.

How far in advance should I book flights to Puerto Rico?

About 9 weeks ahead. KAYAK says flights to San Juan are cheapest around 9 weeks before departure, and booking in that window typically costs about 9% less than the average last-minute fare, meaning within 2 weeks of the flight.

What day of the week is cheapest to fly to Puerto Rico?

Monday, according to KAYAK's 12-month data at the time of writing. Monday round trips to San Juan averaged about $394 and Saturday was the most expensive at about $420. Afternoon departures averaged about $385, cheaper than morning flights at about $425.

Which airlines fly to Puerto Rico from the US?

KAYAK lists Frontier, JetBlue, American Airlines and United as the most popular airlines with its users for San Juan over the past 3 months, and says JetBlue runs the most flights, at about 225 a week. Nonstop flights operate every day from several US cities.

Do I need a passport to fly to Puerto Rico?

US citizens do not need a passport. Puerto Rico is a US territory, so flights from the mainland are domestic flights and you use the same ID you would show for any domestic flight.

Is Expedia or Priceline cheaper for flights to Puerto Rico?

It changes by date and flight, so compare the same flight on both. Expedia lets you add a hotel to make a package and earn OneKeyCash through its free One Key programme, while Priceline has its free VIP programme. Pick the lower total, then go through ShopBack US before you check out.

When is hurricane season in Puerto Rico?

The Atlantic hurricane season runs from June 1 to November 30, according to the US National Hurricane Center. If you book a trip in those months, check the airline's change rules and consider travel insurance.

Which US city has the cheapest flights to Puerto Rico?

Florida airports usually come out lowest. On KAYAK's data at the time of writing, Miami round trips to San Juan averaged about $263 and Fort Lauderdale about $285, and the lowest fares that a quarter of KAYAK users found started from Miami, Fort Lauderdale and Orlando.

How does ShopBack lower the price of a Puerto Rico flight?

Before you check out, go through ShopBack to get a post-purchase discount on the order. Open Expedia, Priceline or CheapOair from ShopBack US, book your flight as usual, and part of what you paid comes back as cash. The live rate and terms, including which bookings qualify, are on each store's ShopBack page.

Is cashback the same as airline miles?

No. Cashback lowers what you actually pay for an order. It comes back as cash, so it works like a discount on the price, not like points or miles that you can only redeem with one airline.

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Key takeaways

• January is the cheapest month to fly to San Juan, at about $328 round trip, against a $387 average; December and June cost the most, on KAYAK's 12-month data at the time of writing.
• Book about 9 weeks ahead, and fly on a Monday afternoon if you can.
• Florida departures are usually cheapest: Miami averaged about $263 and Fort Lauderdale about $285.
• US citizens need no passport, since Puerto Rico is a US territory.
• Compare Expedia, Priceline and CheapOair for the same flight, then book through ShopBack US: Expedia, Priceline, CheapOair.

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Related reads

• When to Book US Flights
• Earn Cashback on Hotels and Flights
• US Travel Cashback Hub
• How to Save on Expedia in the US

Book travel through ShopBack US: Expedia · Priceline · CheapOair · Trip.com · Booking.com · Hotels.com

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Disclaimer

The views in this article are those of the author and are for general information only. This article is not affiliated with or endorsed by Expedia, Priceline, CheapOair or KAYAK. Fare averages are based on KAYAK's published 12-month data at the time of writing and will change; real fares depend on your origin, dates and airline. Loyalty programme terms, packages and sale dates can change, so check each site before you book. Cashback rates on ShopBack vary by store and campaign; check the current rate and terms on each store's ShopBack page before you book.