The kids are out of school, backyard barbecues are in full swing, and new summer deals offer more ways to make that dream cruise a reality. Nudging you to book now are free flights, savings on fares and those ever-present perks (meaning spending money, free booze and other bonus amenities that make your sailing shine).

Check out the latest deals from your favorite cruise lines so you can plan your last-minute summer getaway or upcoming family vacation with confidence.

Discounts on Viking River Cruises + Reduced or Free Air

What it is: Cruise at a reduced rate on Europe's most famous rivers. Plus, free of reduced airfare for your trip.

Eligible voyages include: Paris to Zurich, Budpaest to Amsterdam, and Budapest to Nuremburg

Valid: July 31, 2019

Free Air on Select Silversea Sailings to the Caribbean

What it is: When booking your next Silversea cruise, expect free roundtrip air on Caribbean cruises, plus transfers.

Eligible voyages include: Voyages on various itineraries throughout 2019

Valid: Through July 31, 2019

Up To 30% Off New Azamara Bookings With "Sail Into Savings" Deal

What it is: The first two guests in any stateroom will receive up to 30 percent off their cruise fares.

Eligible voyages include: Any sailing departing between November 5, 2019 and November 14, 2020.

Valid: Through July 31, 2019

Princess Cruises Offers Up to 35% Savings With Sun-Drenched Deals

What it is: Princess Cruises' annual Sun-Drenched Deals sale offers with savings up to 35 percent and $99 fares for third and fourth guests in the stateroom. This promotion applies to all stateroom categories with a deposit of only 10 percent per person.

Eligible voyages include: Cruises departing this fall and winter to worldwide destinations such as the Caribbean, Mexico, Canada & New England, Hawaii, Panama Canal, California Coast, Australia & New Zealand, South Pacific, Asia, Mediterranean, Transatlantic, Scandinavia & Russia, South America & Antarctica and Japan.

Valid: Through July 31, 2019

Free Roundtrip Airfare On Select 2019 AmaWaterways Europe Sailings

What it is: By mentioning the promo code FLYFREE, you can receive free Economy airfare from more than 60 U.S. and Canada gateways when booking select 2019 AmaWaterways Rhine and Danube river cruise itineraries in Europe. With promo code FLYBUS, you can receive two-for-one savings on business class airfare for the same cruise itineraries.

Eligible voyages include: Select European river sailings in 2019 for new double occupancy reservations

Valid: Through July 31, 2019

Lower Deposits, Up To $500 Onboard Credit And More on Select 2020 Paul Gauguin Sailings During "Dream in Blue" Promotion

What it is: Deposits for select 2020 voyages have been reduced to $250 per person, and each stateroom is eligible for $500 in onboard credit (categories E and F will receive $300 in credit per stateroom, while categories D and above will receive $500).

Paul Gauguin Cruises is also offering free airfare from Los Angeles or San Francisco, and 50 percent off standard all-inclusive cruise fares on all voyages.

Eligible voyages include: 7-night Tahiti & The Society Islands sailings departing on January 11, 2020, February 15, 2020 and February 22, 2020; 7-night Society Islands & Tahiti Iti sailings departing on January 4, 2020, February 8, 2020 and February 29, 2020; a 10-night Society Islands & Tuamotus sailing departing on January 29, 2020; 11-night Cook Islands & Society Islands sailings departing on January 18, 2020 and March 7, 2020.

Valid: Through July 31, 2019

Up To $400 Off Australis Tierra Del Fuego Voyages This Fall/Winter

What it is: Receive $400 off per adult passenger, and $200 off per child passenger, on all-inclusive Australis expedition cruises of Tierra del Fuego this fall and winter.

Eligible voyages include: 4- and 8-night Tierra del Fuego itineraries departing Chile and Argentina between September and December 2019

Valid: Through July 31, 2019

Free Thailand Cruise With Purchase Of Antarctica Voyage With Intrepid Travel

What it is: When you book a category six and above cabin on Intrepid's Ocean Endeavour for select voyages, you will get a free Adventure Cruise in Thailand that departs before February 28, 2020.

Eligible voyages include: Ocean Endeavour cruises departing between October 1, 2020 and March 31, 2021

Valid: Through July 31, 2019

Save Up To $400 On Any Celebrity Stateroom, and 3rd and 4th Guests Get 50 Percent Off Fares

What it is: Right now, save up to $400 in any stateroom, or if you book a suite, save up to $500 plus premium drinks, Wi-Fi, pre-paid tips and $150 onboard credit.

Also, any guests beyond the first two in a stateroom can save 50 percent on their cruise fares.

Eligible voyages include: Any four-night or longer sailings departing between September 1, 2019 and May 3, 2021.

Valid: Extended through August 7, 2019

MSC Cruises Offers Free Drinks & Wi-Fi on Ships in the Caribbean

What it is: Set sail in the Eastern/Western Caribbean or to Canada/New England on MSC Seaside, MSC Divina, MSC Meraviglia or MSC Armonia and receive unlimited drinks for the duration of your cruise. Book any stateroom category with the Bella, Fantastica, or Wellness Experiences and receive the Drinks On Us package (valued at $250 per person). Plus, for a limited time, receive a standard internet package, as well. Sailings start from $519 per person.

Eligible voyages include: Select sailings aboard MSC Seaside, MSC Meraviglia, MSC Divina and MSC Armonia

Valid: Through August 15, 2019

Avalon Waterways' Suite Life Sales Event

What it is: Save $1,000 per couple on select 2020 Europe river cruises with Avalon this summer.

Eligible voyages include: Select itineraries and departures throughout 2020 including Amsterdam, Nuremburg, Budapest and Paris.

Valid: Through August 27, 2019

Cunard's 'Big Balcony Event' Offers Free Upgrades, Onboard Credit

What it is: Free balcony stateroom upgrades are available when booking category BZ for the same fare as category DF on Queen Mary 2, or booking category BF for the same fare as category CB on Queen Elizabeth or Queen Victoria. Also, depending on the length of your voyage and the type of room you book, you will receive anywhere from $150 to $1,000 in free onboard credit.

Also, Grill Suite guests will receive free gratuities, and Grill Suite guests on voyages that are seven nights or longer will receive a free drinks package.

Eligible voyages include: Select Cunard Queen voyages

Valid: Through August 28, 2019

Fly Free To Your Suite Or For $395 To Your Emerald Stateroom, Or Get Instant Savings

What it is: With a Panorama Balcony Suite (category C or above), you can choose free flights to Europe from the U.S. or instant savings of $2,400 per couple. With an Emerald Stateroom on the Riviera Deck (categories D, E or F), choose flights to Europe for $395 or instant savings of $1,000 per couple.

Eligible voyages include: 2020 European river cruises

Valid: Through August 30, 2019

Free or Reduced Airfare or Discounts on Emerald Waterways' 2020 Gastronomic French River Cruises

What it is: Culinary and wine enthusiasts on Emerald Waterways' new, 8-night "Flavours of Burgundy and Provence" itinerary that sails round trip from Lyon starting in July 2020 can get free or reduced airfare depending on their stateroom (suites on Horizon or Vista Deck will receive free round trip airfare to France, while guests in Riviera Deck staterooms will receive round trip air for $395).

In lieu of free or reduced airfare, passengers can receive a discount on their cruise, with $1,000 and $500 off per person, respectively.
Additionally, passengers who have paid for their sailing in full by August 15, 2019 will receive an additional $500 per person off itineraries of 15 days or more, and $300 per person off itineraries of 7 to 14 days.

Eligible voyages include: Any of the four 8-night "Flavours of Burgundy and Provence" itineraries

Valid: Through August 30, 2019

Save 15% on CroisiEurope 2020 European Cruises

What it is: Book a Croisi sailing in Europe by the end of the summer and save on 2020 river voyages to the Rhine, Danube, Loire, Elbe and more.

Eligible voyages include: Nearly 200 sailing in Europe in 2020

Valid: Through August 31, 2019

AmaWaterways Offers Savings, Upgrades and Onboard Credit on Holiday Cruises

What it is: Passengers booking a Thanksgiving, Christmas or New Year's cruise with AmaWaterways can get $1,000 off per person, a complimentary stateroom upgrade and $50 in onboard credit as part of the "Holiday Triple Savings" deal.

Eligible voyages include: 38 holiday sailings along the Rhine and Danube rivers

Valid: Through August 31, 2019

Up To 40% Off And No Single Supplement On Variety Cruises Voyages To Costa Rica And Panama With Offer Code

What it is: With booking code "Special offer 2019/20," passengers on Variety Cruises voyages to Costa Rica and Panama can receive 40 percent off for double occupancy or no single supplement, as well as free upgrades for both single and double occupancy, for cruises departing on December 14, 2019, January 4, 11 and 18, 2020 and February 1, 2020. Cruisers departing on December 28, 2019, January 25, 2020, February 22, 2020 and March 7, 2020 will receive 20 percent off in double occupancy or no single supplement for single occupancy.

Eligible voyages include: Individual and group bookings on select sailings to Costa Rica and Panama

Valid: Through September 15, 2019

Save on Quark Expeditions' Voyages to the North Pole

What it is: Earn a free transfer package valued at $1,995 plus 10 percent savings on early bookings to the North Pole with Quark if you pay by June 15, 2019. Plus, save up to $2,000 on cabins plus complimentary air on select departures of Quark Expeditions' Arctic cruises in 2019.

Eligible voyages include: The 14-day Ultimate Arctic Adventure expedition in June/July 2020. Other promotion applies to various Arctic (Spitsbergen) departures June through September 2019

Valid: Most packages valid through September 23, 2019

Regent Seven Seas Offers $500 in Onboard Credit for Select Europe Voyages

What it is: Book your dream cruise through Europe departing this summer or fall and receive up to $500 in spending money onboard, while availability lasts.

Eligible voyages include: Select sailings to Europe through November 2019

Valid: Ongoing, while availability lasts

Lindblad Offers Half Off or Free Kids' Fares in Alaska

What it is: When two adults pay full fare to sail select Alaska itineraries in 2019, the first child (categorized as age 22 or under) sails for half off, while the fourth passenger 22 years or younger sails for free.

Eligible voyages include: Lindblad's 2019 "Exploring Alaska's Coastal Wilderness" departures through September.

Valid: For a limited time only

Buy One, Get One Free Promo in Southeast Asia with Cruise and Maritime Voyages

What it is: Onboard Cruise and Maritime Voyages' newest ship, Vasco da Gama, the line is celebrating its new Treasures of Southeast Asia cruise program with a "buy one, get one free" promotion.

The cruise sails round-trip from Singapore on February 24, 2020, and visits Malaysia, Vietnam, Thailand and Cambodia.

Eligible voyages include: 15-night Treasures of Southeast Asia cruise

Valid: For a limited time

Summer Bahamas Paradise Sailings Get 5 Free Drinks, As Well As Kids Sail Free Or Onboard Credit

What it is: Passengers on Bahamas Paradise Cruise Line receive five free drinks per stateroom, plus either Kids Sail Free or $50 onboard credit.

Eligible voyages include: Sailings departing now through August 31

Valid: For a limited time

Ponant Offers Up to 30% Off Select Departures to South America, the Med & More

What it is: Select Ponant sailings are up to 30 percent off, including Central and South America in 2019, and the Mediterranean in 2020. Additional incentives available for early bookings.

Eligible voyages include: A variety of available itineraries through 2019/2020 including the 14-day Chilean Fjords & Patagonia sailing on Le Boreal and the October 11th Canary Islands and Cape Verde cruise in 2020.

Valid: Depending on availability

Variety Cruises Discounts Exotic Destinations By Up to 50%

What it is: Variety Cruises is now offering discounts of up to 50 percent per person (double occupancy) or a 10 percent or waived single supplement on select summer 2019 itineraries and departures.

Eligible voyages include: Bali and the Indonesian Islands, the Adriatic Sea, Spain & Portugal, Seychelles, Iceland and more sailings with departures this summer.

Valid: Depending on availability